Bug Summary

File:dev/pci/if_vr.c
Warning:line 1282, column 12
Access to field 'vr_ctl' results in a dereference of a null pointer (loaded from variable 'f')

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.4 -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name if_vr.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model static -mframe-pointer=all -relaxed-aliasing -ffp-contract=on -fno-rounding-math -mconstructor-aliases -ffreestanding -mcmodel=kernel -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -target-feature -sse2 -target-feature -sse -target-feature -3dnow -target-feature -mmx -target-feature +save-args -target-feature +retpoline-external-thunk -disable-red-zone -no-implicit-float -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -nostdsysteminc -nobuiltininc -resource-dir /usr/local/llvm16/lib/clang/16 -I /usr/src/sys -I /usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -I /usr/src/sys/arch -I /usr/src/sys/dev/pci/drm/include -I /usr/src/sys/dev/pci/drm/include/uapi -I /usr/src/sys/dev/pci/drm/amd/include/asic_reg -I /usr/src/sys/dev/pci/drm/amd/include -I /usr/src/sys/dev/pci/drm/amd/amdgpu -I /usr/src/sys/dev/pci/drm/amd/display -I /usr/src/sys/dev/pci/drm/amd/display/include -I /usr/src/sys/dev/pci/drm/amd/display/dc -I /usr/src/sys/dev/pci/drm/amd/display/amdgpu_dm -I /usr/src/sys/dev/pci/drm/amd/pm/inc -I /usr/src/sys/dev/pci/drm/amd/pm/legacy-dpm -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu11 -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu12 -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu13 -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/inc -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/hwmgr -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/smumgr -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc/pmfw_if -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc/hw -I /usr/src/sys/dev/pci/drm/amd/display/dc/clk_mgr -I /usr/src/sys/dev/pci/drm/amd/display/modules/inc -I /usr/src/sys/dev/pci/drm/amd/display/modules/hdcp -I /usr/src/sys/dev/pci/drm/amd/display/dmub/inc -I /usr/src/sys/dev/pci/drm/i915 -D DDB -D DIAGNOSTIC -D KTRACE -D ACCOUNTING -D KMEMSTATS -D PTRACE -D POOL_DEBUG -D CRYPTO -D SYSVMSG -D SYSVSEM -D SYSVSHM -D UVM_SWAP_ENCRYPT -D FFS -D FFS2 -D FFS_SOFTUPDATES -D UFS_DIRHASH -D QUOTA -D EXT2FS -D MFS -D NFSCLIENT -D NFSSERVER -D CD9660 -D UDF -D MSDOSFS -D FIFO -D FUSE -D SOCKET_SPLICE -D TCP_ECN -D TCP_SIGNATURE -D INET6 -D IPSEC -D PPP_BSDCOMP -D PPP_DEFLATE -D PIPEX -D MROUTING -D MPLS -D BOOT_CONFIG -D USER_PCICONF -D APERTURE -D MTRR -D NTFS -D SUSPEND -D HIBERNATE -D PCIVERBOSE -D USBVERBOSE -D WSDISPLAY_COMPAT_USL -D WSDISPLAY_COMPAT_RAWKBD -D WSDISPLAY_DEFAULTSCREENS=6 -D X86EMU -D ONEWIREVERBOSE -D MULTIPROCESSOR -D MAXUSERS=80 -D _KERNEL -O2 -Wno-pointer-sign -Wno-address-of-packed-member -Wno-constant-conversion -Wno-unused-but-set-variable -Wno-gnu-folding-constant -fdebug-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fcf-protection=branch -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -o /home/ben/Projects/scan/2024-01-11-110808-61670-1 -x c /usr/src/sys/dev/pci/if_vr.c
1/* $OpenBSD: if_vr.c,v 1.160 2023/12/05 13:43:39 kevlo Exp $ */
2
3/*
4 * Copyright (c) 1997, 1998
5 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Bill Paul.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 * $FreeBSD: src/sys/pci/if_vr.c,v 1.73 2003/08/22 07:13:22 imp Exp $
35 */
36
37/*
38 * VIA Rhine fast ethernet PCI NIC driver
39 *
40 * Supports various network adapters based on the VIA Rhine
41 * and Rhine II PCI controllers, including the D-Link DFE530TX.
42 * Datasheets are available at ftp://ftp.vtbridge.org/Docs/LAN/.
43 *
44 * Written by Bill Paul <wpaul@ctr.columbia.edu>
45 * Electrical Engineering Department
46 * Columbia University, New York City
47 */
48
49/*
50 * The VIA Rhine controllers are similar in some respects to the
51 * the DEC tulip chips, except less complicated. The controller
52 * uses an MII bus and an external physical layer interface. The
53 * receiver has a one entry perfect filter and a 64-bit hash table
54 * multicast filter. Transmit and receive descriptors are similar
55 * to the tulip.
56 *
57 * Early Rhine has a serious flaw in its transmit DMA mechanism:
58 * transmit buffers must be longword aligned. Unfortunately,
59 * OpenBSD doesn't guarantee that mbufs will be filled in starting
60 * at longword boundaries, so we have to do a buffer copy before
61 * transmission.
62 */
63
64#include "bpfilter.h"
65#include "vlan.h"
66
67#include <sys/param.h>
68#include <sys/systm.h>
69#include <sys/sockio.h>
70#include <sys/mbuf.h>
71#include <sys/kernel.h>
72#include <sys/timeout.h>
73#include <sys/socket.h>
74
75#include <net/if.h>
76#include <sys/device.h>
77#include <netinet/in.h>
78#include <netinet/if_ether.h>
79#include <net/if_media.h>
80
81#if NBPFILTER1 > 0
82#include <net/bpf.h>
83#endif
84
85#include <machine/bus.h>
86
87#include <dev/mii/miivar.h>
88
89#include <dev/pci/pcireg.h>
90#include <dev/pci/pcivar.h>
91#include <dev/pci/pcidevs.h>
92
93#define VR_USEIOSPACE
94
95#include <dev/pci/if_vrreg.h>
96
97int vr_probe(struct device *, void *, void *);
98int vr_quirks(struct pci_attach_args *);
99void vr_attach(struct device *, struct device *, void *);
100int vr_activate(struct device *, int);
101
102const struct cfattach vr_ca = {
103 sizeof(struct vr_softc), vr_probe, vr_attach, NULL((void *)0),
104 vr_activate
105};
106struct cfdriver vr_cd = {
107 NULL((void *)0), "vr", DV_IFNET
108};
109
110int vr_encap(struct vr_softc *, struct vr_chain **, struct mbuf *);
111void vr_rxeof(struct vr_softc *);
112void vr_rxeoc(struct vr_softc *);
113void vr_txeof(struct vr_softc *);
114void vr_tick(void *);
115void vr_rxtick(void *);
116int vr_intr(void *);
117int vr_dmamem_alloc(struct vr_softc *, struct vr_dmamem *,
118 bus_size_t, u_int);
119void vr_dmamem_free(struct vr_softc *, struct vr_dmamem *);
120void vr_start(struct ifnet *);
121int vr_ioctl(struct ifnet *, u_long, caddr_t);
122void vr_chipinit(struct vr_softc *);
123void vr_init(void *);
124void vr_stop(struct vr_softc *);
125void vr_watchdog(struct ifnet *);
126int vr_ifmedia_upd(struct ifnet *);
127void vr_ifmedia_sts(struct ifnet *, struct ifmediareq *);
128
129int vr_mii_readreg(struct vr_softc *, struct vr_mii_frame *);
130int vr_mii_writereg(struct vr_softc *, struct vr_mii_frame *);
131int vr_miibus_readreg(struct device *, int, int);
132void vr_miibus_writereg(struct device *, int, int, int);
133void vr_miibus_statchg(struct device *);
134
135void vr_setcfg(struct vr_softc *, uint64_t);
136void vr_iff(struct vr_softc *);
137void vr_reset(struct vr_softc *);
138int vr_list_rx_init(struct vr_softc *);
139void vr_fill_rx_ring(struct vr_softc *);
140int vr_list_tx_init(struct vr_softc *);
141#ifndef SMALL_KERNEL
142int vr_wol(struct ifnet *, int);
143#endif
144
145int vr_alloc_mbuf(struct vr_softc *, struct vr_chain_onefrag *);
146
147/*
148 * Supported devices & quirks
149 */
150#define VR_Q_NEEDALIGN(1<<0) (1<<0)
151#define VR_Q_CSUM(1<<1) (1<<1)
152#define VR_Q_CAM(1<<2) (1<<2)
153#define VR_Q_HWTAG(1<<3) (1<<3)
154#define VR_Q_INTDISABLE(1<<4) (1<<4)
155#define VR_Q_BABYJUMBO(1<<5) (1<<5) /* others may work too */
156
157struct vr_type {
158 pci_vendor_id_t vr_vid;
159 pci_product_id_t vr_pid;
160 int vr_quirks;
161} vr_devices[] = {
162 { PCI_VENDOR_VIATECH0x1106, PCI_PRODUCT_VIATECH_RHINE0x3043,
163 VR_Q_NEEDALIGN(1<<0) },
164 { PCI_VENDOR_VIATECH0x1106, PCI_PRODUCT_VIATECH_RHINEII0x6100,
165 VR_Q_NEEDALIGN(1<<0) },
166 { PCI_VENDOR_VIATECH0x1106, PCI_PRODUCT_VIATECH_RHINEII_20x3065,
167 VR_Q_BABYJUMBO(1<<5) },
168 { PCI_VENDOR_VIATECH0x1106, PCI_PRODUCT_VIATECH_VT61050x3106,
169 VR_Q_BABYJUMBO(1<<5) },
170 { PCI_VENDOR_VIATECH0x1106, PCI_PRODUCT_VIATECH_VT6105M0x3053,
171 VR_Q_CSUM(1<<1) | VR_Q_CAM(1<<2) | VR_Q_HWTAG(1<<3) | VR_Q_INTDISABLE(1<<4) |
172 VR_Q_BABYJUMBO(1<<5) },
173 { PCI_VENDOR_DELTA0x1500, PCI_PRODUCT_DELTA_RHINEII0x1320,
174 VR_Q_NEEDALIGN(1<<0) },
175 { PCI_VENDOR_ADDTRON0x4033, PCI_PRODUCT_ADDTRON_RHINEII0x1320,
176 VR_Q_NEEDALIGN(1<<0) }
177};
178
179#define VR_SETBIT(sc, reg, x)((sc->vr_btag)->write_1((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_1((sc->vr_bhandle), (reg))) | (x)
))) \
180 CSR_WRITE_1(sc, reg, \((sc->vr_btag)->write_1((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_1((sc->vr_bhandle), (reg))) | (x)
)))
181 CSR_READ_1(sc, reg) | (x))((sc->vr_btag)->write_1((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_1((sc->vr_bhandle), (reg))) | (x)
)))
182
183#define VR_CLRBIT(sc, reg, x)((sc->vr_btag)->write_1((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_1((sc->vr_bhandle), (reg))) &
~(x)))) \
184 CSR_WRITE_1(sc, reg, \((sc->vr_btag)->write_1((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_1((sc->vr_bhandle), (reg))) &
~(x))))
185 CSR_READ_1(sc, reg) & ~(x))((sc->vr_btag)->write_1((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_1((sc->vr_bhandle), (reg))) &
~(x))))
186
187#define VR_SETBIT16(sc, reg, x)((sc->vr_btag)->write_2((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_2((sc->vr_bhandle), (reg))) | (x)
))) \
188 CSR_WRITE_2(sc, reg, \((sc->vr_btag)->write_2((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_2((sc->vr_bhandle), (reg))) | (x)
)))
189 CSR_READ_2(sc, reg) | (x))((sc->vr_btag)->write_2((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_2((sc->vr_bhandle), (reg))) | (x)
)))
190
191#define VR_CLRBIT16(sc, reg, x)((sc->vr_btag)->write_2((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_2((sc->vr_bhandle), (reg))) &
~(x)))) \
192 CSR_WRITE_2(sc, reg, \((sc->vr_btag)->write_2((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_2((sc->vr_bhandle), (reg))) &
~(x))))
193 CSR_READ_2(sc, reg) & ~(x))((sc->vr_btag)->write_2((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_2((sc->vr_bhandle), (reg))) &
~(x))))
194
195#define VR_SETBIT32(sc, reg, x)((sc->vr_btag)->write_4((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_4((sc->vr_bhandle), (reg))) | (x)
))) \
196 CSR_WRITE_4(sc, reg, \((sc->vr_btag)->write_4((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_4((sc->vr_bhandle), (reg))) | (x)
)))
197 CSR_READ_4(sc, reg) | (x))((sc->vr_btag)->write_4((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_4((sc->vr_bhandle), (reg))) | (x)
)))
198
199#define VR_CLRBIT32(sc, reg, x)((sc->vr_btag)->write_4((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_4((sc->vr_bhandle), (reg))) &
~(x)))) \
200 CSR_WRITE_4(sc, reg, \((sc->vr_btag)->write_4((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_4((sc->vr_bhandle), (reg))) &
~(x))))
201 CSR_READ_4(sc, reg) & ~(x))((sc->vr_btag)->write_4((sc->vr_bhandle), (reg), (((
sc->vr_btag)->read_4((sc->vr_bhandle), (reg))) &
~(x))))
202
203#define SIO_SET(x)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x70), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x70))) | (
x)))) \
204 CSR_WRITE_1(sc, VR_MIICMD, \((sc->vr_btag)->write_1((sc->vr_bhandle), (0x70), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x70))) | (
x))))
205 CSR_READ_1(sc, VR_MIICMD) | (x))((sc->vr_btag)->write_1((sc->vr_bhandle), (0x70), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x70))) | (
x))))
206
207#define SIO_CLR(x)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x70), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x70))) &
~(x)))) \
208 CSR_WRITE_1(sc, VR_MIICMD, \((sc->vr_btag)->write_1((sc->vr_bhandle), (0x70), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x70))) &
~(x))))
209 CSR_READ_1(sc, VR_MIICMD) & ~(x))((sc->vr_btag)->write_1((sc->vr_bhandle), (0x70), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x70))) &
~(x))))
210
211/*
212 * Read an PHY register through the MII.
213 */
214int
215vr_mii_readreg(struct vr_softc *sc, struct vr_mii_frame *frame)
216{
217 int s, i;
218
219 s = splnet()splraise(0x4);
220
221 /* Set the PHY-address */
222 CSR_WRITE_1(sc, VR_PHYADDR, (CSR_READ_1(sc, VR_PHYADDR)& 0xe0)|((sc->vr_btag)->write_1((sc->vr_bhandle), (0x6C), ((
((sc->vr_btag)->read_1((sc->vr_bhandle), (0x6C)))&
0xe0)| frame->mii_phyaddr)))
223 frame->mii_phyaddr)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x6C), ((
((sc->vr_btag)->read_1((sc->vr_bhandle), (0x6C)))&
0xe0)| frame->mii_phyaddr)));
224
225 /* Set the register-address */
226 CSR_WRITE_1(sc, VR_MIIADDR, frame->mii_regaddr)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x71), (frame
->mii_regaddr)));
227 VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_READ_ENB)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x70), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x70))) | (
0x40))));
228
229 for (i = 0; i < 10000; i++) {
230 if ((CSR_READ_1(sc, VR_MIICMD)((sc->vr_btag)->read_1((sc->vr_bhandle), (0x70))) & VR_MIICMD_READ_ENB0x40) == 0)
231 break;
232 DELAY(1)(*delay_func)(1);
233 }
234
235 frame->mii_data = CSR_READ_2(sc, VR_MIIDATA)((sc->vr_btag)->read_2((sc->vr_bhandle), (0x72)));
236
237 splx(s)spllower(s);
238
239 return(0);
240}
241
242/*
243 * Write to a PHY register through the MII.
244 */
245int
246vr_mii_writereg(struct vr_softc *sc, struct vr_mii_frame *frame)
247{
248 int s, i;
249
250 s = splnet()splraise(0x4);
251
252 /* Set the PHY-address */
253 CSR_WRITE_1(sc, VR_PHYADDR, (CSR_READ_1(sc, VR_PHYADDR)& 0xe0)|((sc->vr_btag)->write_1((sc->vr_bhandle), (0x6C), ((
((sc->vr_btag)->read_1((sc->vr_bhandle), (0x6C)))&
0xe0)| frame->mii_phyaddr)))
254 frame->mii_phyaddr)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x6C), ((
((sc->vr_btag)->read_1((sc->vr_bhandle), (0x6C)))&
0xe0)| frame->mii_phyaddr)));
255
256 /* Set the register-address and data to write */
257 CSR_WRITE_1(sc, VR_MIIADDR, frame->mii_regaddr)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x71), (frame
->mii_regaddr)));
258 CSR_WRITE_2(sc, VR_MIIDATA, frame->mii_data)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x72), (frame
->mii_data)));
259
260 VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_WRITE_ENB)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x70), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x70))) | (
0x20))));
261
262 for (i = 0; i < 10000; i++) {
263 if ((CSR_READ_1(sc, VR_MIICMD)((sc->vr_btag)->read_1((sc->vr_bhandle), (0x70))) & VR_MIICMD_WRITE_ENB0x20) == 0)
264 break;
265 DELAY(1)(*delay_func)(1);
266 }
267
268 splx(s)spllower(s);
269
270 return(0);
271}
272
273int
274vr_miibus_readreg(struct device *dev, int phy, int reg)
275{
276 struct vr_softc *sc = (struct vr_softc *)dev;
277 struct vr_mii_frame frame;
278
279 switch (sc->vr_revid) {
280 case REV_ID_VT6102_APOLLO0x74:
281 case REV_ID_VT61030x78:
282 if (phy != 1)
283 return 0;
284 default:
285 break;
286 }
287
288 bzero(&frame, sizeof(frame))__builtin_bzero((&frame), (sizeof(frame)));
289
290 frame.mii_phyaddr = phy;
291 frame.mii_regaddr = reg;
292 vr_mii_readreg(sc, &frame);
293
294 return(frame.mii_data);
295}
296
297void
298vr_miibus_writereg(struct device *dev, int phy, int reg, int data)
299{
300 struct vr_softc *sc = (struct vr_softc *)dev;
301 struct vr_mii_frame frame;
302
303 switch (sc->vr_revid) {
304 case REV_ID_VT6102_APOLLO0x74:
305 case REV_ID_VT61030x78:
306 if (phy != 1)
307 return;
308 default:
309 break;
310 }
311
312 bzero(&frame, sizeof(frame))__builtin_bzero((&frame), (sizeof(frame)));
313
314 frame.mii_phyaddr = phy;
315 frame.mii_regaddr = reg;
316 frame.mii_data = data;
317
318 vr_mii_writereg(sc, &frame);
319}
320
321void
322vr_miibus_statchg(struct device *dev)
323{
324 struct vr_softc *sc = (struct vr_softc *)dev;
325
326 vr_setcfg(sc, sc->sc_mii.mii_media_active);
327}
328
329void
330vr_iff(struct vr_softc *sc)
331{
332 struct arpcom *ac = &sc->arpcom;
333 struct ifnet *ifp = &sc->arpcom.ac_if;
334 int h = 0;
335 u_int32_t hashes[2];
336 struct ether_multi *enm;
337 struct ether_multistep step;
338 u_int8_t rxfilt;
339
340 rxfilt = CSR_READ_1(sc, VR_RXCFG)((sc->vr_btag)->read_1((sc->vr_bhandle), (0x06)));
341 rxfilt &= ~(VR_RXCFG_RX_BROAD0x08 | VR_RXCFG_RX_MULTI0x04 |
342 VR_RXCFG_RX_PROMISC0x10);
343 ifp->if_flags &= ~IFF_ALLMULTI0x200;
344
345 /*
346 * Always accept broadcast frames.
347 */
348 rxfilt |= VR_RXCFG_RX_BROAD0x08;
349
350 if (ifp->if_flags & IFF_PROMISC0x100 || ac->ac_multirangecnt > 0) {
351 ifp->if_flags |= IFF_ALLMULTI0x200;
352 rxfilt |= VR_RXCFG_RX_MULTI0x04;
353 if (ifp->if_flags & IFF_PROMISC0x100)
354 rxfilt |= VR_RXCFG_RX_PROMISC0x10;
355 hashes[0] = hashes[1] = 0xFFFFFFFF;
356 } else {
357 /* Program new filter. */
358 rxfilt |= VR_RXCFG_RX_MULTI0x04;
359 bzero(hashes, sizeof(hashes))__builtin_bzero((hashes), (sizeof(hashes)));
360
361 ETHER_FIRST_MULTI(step, ac, enm)do { (step).e_enm = ((&(ac)->ac_multiaddrs)->lh_first
); do { if ((((enm)) = ((step)).e_enm) != ((void *)0)) ((step
)).e_enm = ((((enm)))->enm_list.le_next); } while ( 0); } while
( 0);
362 while (enm != NULL((void *)0)) {
363 h = ether_crc32_be(enm->enm_addrlo,
364 ETHER_ADDR_LEN6) >> 26;
365
366 if (h < 32)
367 hashes[0] |= (1 << h);
368 else
369 hashes[1] |= (1 << (h - 32));
370
371 ETHER_NEXT_MULTI(step, enm)do { if (((enm) = (step).e_enm) != ((void *)0)) (step).e_enm =
(((enm))->enm_list.le_next); } while ( 0);
372 }
373 }
374
375 CSR_WRITE_4(sc, VR_MAR0, hashes[0])((sc->vr_btag)->write_4((sc->vr_bhandle), (0x10), (hashes
[0])));
376 CSR_WRITE_4(sc, VR_MAR1, hashes[1])((sc->vr_btag)->write_4((sc->vr_bhandle), (0x14), (hashes
[1])));
377 CSR_WRITE_1(sc, VR_RXCFG, rxfilt)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x06), (rxfilt
)));
378}
379
380/*
381 * In order to fiddle with the
382 * 'full-duplex' and '100Mbps' bits in the netconfig register, we
383 * first have to put the transmit and/or receive logic in the idle state.
384 */
385void
386vr_setcfg(struct vr_softc *sc, uint64_t media)
387{
388 int i;
389
390 if (sc->sc_mii.mii_media_status & IFM_ACTIVE0x0000000000000002ULL &&
391 IFM_SUBTYPE(sc->sc_mii.mii_media_active)((sc->sc_mii.mii_media_active) & 0x00000000000000ffULL
) != IFM_NONE2ULL) {
392 sc->vr_link = 1;
393
394 if (CSR_READ_2(sc, VR_COMMAND)((sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) & (VR_CMD_TX_ON0x0010|VR_CMD_RX_ON0x0008))
395 VR_CLRBIT16(sc, VR_COMMAND,((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) &
~((0x0010|0x0008)))))
396 (VR_CMD_TX_ON|VR_CMD_RX_ON))((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) &
~((0x0010|0x0008)))));
397
398 if ((media & IFM_GMASK0x00ffff0000000000ULL) == IFM_FDX0x0000010000000000ULL)
399 VR_SETBIT16(sc, VR_COMMAND, VR_CMD_FULLDUPLEX)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) | (
0x0400))));
400 else
401 VR_CLRBIT16(sc, VR_COMMAND, VR_CMD_FULLDUPLEX)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) &
~(0x0400))));
402
403 VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON|VR_CMD_RX_ON)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) | (
0x0010|0x0008))));
404 } else {
405 sc->vr_link = 0;
406 VR_CLRBIT16(sc, VR_COMMAND, (VR_CMD_TX_ON|VR_CMD_RX_ON))((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) &
~((0x0010|0x0008)))));
407 for (i = VR_TIMEOUT1000; i > 0; i--) {
408 DELAY(10)(*delay_func)(10);
409 if (!(CSR_READ_2(sc, VR_COMMAND)((sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) &
410 (VR_CMD_TX_ON0x0010|VR_CMD_RX_ON0x0008)))
411 break;
412 }
413 if (i == 0) {
414#ifdef VR_DEBUG
415 printf("%s: rx shutdown error!\n", sc->sc_dev.dv_xname);
416#endif
417 sc->vr_flags |= VR_F_RESTART0x01;
418 }
419 }
420}
421
422void
423vr_reset(struct vr_softc *sc)
424{
425 int i;
426
427 VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RESET)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) | (
0x8000))));
428
429 for (i = 0; i < VR_TIMEOUT1000; i++) {
430 DELAY(10)(*delay_func)(10);
431 if (!(CSR_READ_2(sc, VR_COMMAND)((sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) & VR_CMD_RESET0x8000))
432 break;
433 }
434 if (i == VR_TIMEOUT1000) {
435 if (sc->vr_revid < REV_ID_VT3065_A0x40)
436 printf("%s: reset never completed!\n",
437 sc->sc_dev.dv_xname);
438 else {
439#ifdef VR_DEBUG
440 /* Use newer force reset command */
441 printf("%s: Using force reset command.\n",
442 sc->sc_dev.dv_xname);
443#endif
444 VR_SETBIT(sc, VR_MISC_CR1, VR_MISCCR1_FORSRST)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x81), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x81))) | (
0x40))));
445 }
446 }
447
448 /* Wait a little while for the chip to get its brains in order. */
449 DELAY(1000)(*delay_func)(1000);
450}
451
452/*
453 * Probe for a VIA Rhine chip.
454 */
455int
456vr_probe(struct device *parent, void *match, void *aux)
457{
458 const struct vr_type *vr;
459 struct pci_attach_args *pa = (struct pci_attach_args *)aux;
460 int i, nent = nitems(vr_devices)(sizeof((vr_devices)) / sizeof((vr_devices)[0]));
461
462 for (i = 0, vr = vr_devices; i < nent; i++, vr++)
463 if (PCI_VENDOR(pa->pa_id)(((pa->pa_id) >> 0) & 0xffff) == vr->vr_vid &&
464 PCI_PRODUCT(pa->pa_id)(((pa->pa_id) >> 16) & 0xffff) == vr->vr_pid)
465 return(1);
466
467 return(0);
468}
469
470int
471vr_quirks(struct pci_attach_args *pa)
472{
473 const struct vr_type *vr;
474 int i, nent = nitems(vr_devices)(sizeof((vr_devices)) / sizeof((vr_devices)[0]));
475
476 for (i = 0, vr = vr_devices; i < nent; i++, vr++)
477 if (PCI_VENDOR(pa->pa_id)(((pa->pa_id) >> 0) & 0xffff) == vr->vr_vid &&
478 PCI_PRODUCT(pa->pa_id)(((pa->pa_id) >> 16) & 0xffff) == vr->vr_pid)
479 return(vr->vr_quirks);
480
481 return(0);
482}
483
484int
485vr_dmamem_alloc(struct vr_softc *sc, struct vr_dmamem *vrm,
486 bus_size_t size, u_int align)
487{
488 vrm->vrm_size = size;
489
490 if (bus_dmamap_create(sc->sc_dmat, vrm->vrm_size, 1,(*(sc->sc_dmat)->_dmamap_create)((sc->sc_dmat), (vrm
->vrm_size), (1), (vrm->vrm_size), (0), (0x0000 | 0x0002
), (&vrm->vrm_map))
491 vrm->vrm_size, 0, BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW,(*(sc->sc_dmat)->_dmamap_create)((sc->sc_dmat), (vrm
->vrm_size), (1), (vrm->vrm_size), (0), (0x0000 | 0x0002
), (&vrm->vrm_map))
492 &vrm->vrm_map)(*(sc->sc_dmat)->_dmamap_create)((sc->sc_dmat), (vrm
->vrm_size), (1), (vrm->vrm_size), (0), (0x0000 | 0x0002
), (&vrm->vrm_map)) != 0)
493 return (1);
494 if (bus_dmamem_alloc(sc->sc_dmat, vrm->vrm_size,(*(sc->sc_dmat)->_dmamem_alloc)((sc->sc_dmat), (vrm->
vrm_size), (align), (0), (&vrm->vrm_seg), (1), (&vrm
->vrm_nsegs), (0x0000 | 0x1000))
495 align, 0, &vrm->vrm_seg, 1, &vrm->vrm_nsegs,(*(sc->sc_dmat)->_dmamem_alloc)((sc->sc_dmat), (vrm->
vrm_size), (align), (0), (&vrm->vrm_seg), (1), (&vrm
->vrm_nsegs), (0x0000 | 0x1000))
496 BUS_DMA_WAITOK | BUS_DMA_ZERO)(*(sc->sc_dmat)->_dmamem_alloc)((sc->sc_dmat), (vrm->
vrm_size), (align), (0), (&vrm->vrm_seg), (1), (&vrm
->vrm_nsegs), (0x0000 | 0x1000)) != 0)
497 goto destroy;
498 if (bus_dmamem_map(sc->sc_dmat, &vrm->vrm_seg, vrm->vrm_nsegs,(*(sc->sc_dmat)->_dmamem_map)((sc->sc_dmat), (&vrm
->vrm_seg), (vrm->vrm_nsegs), (vrm->vrm_size), (&
vrm->vrm_kva), (0x0000))
499 vrm->vrm_size, &vrm->vrm_kva, BUS_DMA_WAITOK)(*(sc->sc_dmat)->_dmamem_map)((sc->sc_dmat), (&vrm
->vrm_seg), (vrm->vrm_nsegs), (vrm->vrm_size), (&
vrm->vrm_kva), (0x0000)) != 0)
500 goto free;
501 if (bus_dmamap_load(sc->sc_dmat, vrm->vrm_map, vrm->vrm_kva,(*(sc->sc_dmat)->_dmamap_load)((sc->sc_dmat), (vrm->
vrm_map), (vrm->vrm_kva), (vrm->vrm_size), (((void *)0)
), (0x0000))
502 vrm->vrm_size, NULL, BUS_DMA_WAITOK)(*(sc->sc_dmat)->_dmamap_load)((sc->sc_dmat), (vrm->
vrm_map), (vrm->vrm_kva), (vrm->vrm_size), (((void *)0)
), (0x0000)) != 0)
503 goto unmap;
504
505 return (0);
506 unmap:
507 bus_dmamem_unmap(sc->sc_dmat, vrm->vrm_kva, vrm->vrm_size)(*(sc->sc_dmat)->_dmamem_unmap)((sc->sc_dmat), (vrm->
vrm_kva), (vrm->vrm_size));
508 free:
509 bus_dmamem_free(sc->sc_dmat, &vrm->vrm_seg, 1)(*(sc->sc_dmat)->_dmamem_free)((sc->sc_dmat), (&
vrm->vrm_seg), (1));
510 destroy:
511 bus_dmamap_destroy(sc->sc_dmat, vrm->vrm_map)(*(sc->sc_dmat)->_dmamap_destroy)((sc->sc_dmat), (vrm
->vrm_map));
512 return (1);
513}
514
515void
516vr_dmamem_free(struct vr_softc *sc, struct vr_dmamem *vrm)
517{
518 bus_dmamap_unload(sc->sc_dmat, vrm->vrm_map)(*(sc->sc_dmat)->_dmamap_unload)((sc->sc_dmat), (vrm
->vrm_map));
519 bus_dmamem_unmap(sc->sc_dmat, vrm->vrm_kva, vrm->vrm_size)(*(sc->sc_dmat)->_dmamem_unmap)((sc->sc_dmat), (vrm->
vrm_kva), (vrm->vrm_size));
520 bus_dmamem_free(sc->sc_dmat, &vrm->vrm_seg, 1)(*(sc->sc_dmat)->_dmamem_free)((sc->sc_dmat), (&
vrm->vrm_seg), (1));
521 bus_dmamap_destroy(sc->sc_dmat, vrm->vrm_map)(*(sc->sc_dmat)->_dmamap_destroy)((sc->sc_dmat), (vrm
->vrm_map));
522}
523
524/*
525 * Attach the interface. Allocate softc structures, do ifmedia
526 * setup and ethernet/BPF attach.
527 */
528void
529vr_attach(struct device *parent, struct device *self, void *aux)
530{
531 int i;
532 struct vr_softc *sc = (struct vr_softc *)self;
533 struct pci_attach_args *pa = aux;
534 pci_chipset_tag_t pc = pa->pa_pc;
535 pci_intr_handle_t ih;
536 const char *intrstr = NULL((void *)0);
537 struct ifnet *ifp = &sc->arpcom.ac_if;
538 bus_size_t size;
539
540 pci_set_powerstate(pa->pa_pc, pa->pa_tag, PCI_PMCSR_STATE_D00x0000);
541
542 /*
543 * Map control/status registers.
544 */
545
546#ifdef VR_USEIOSPACE
547 if (pci_mapreg_map(pa, VR_PCI_LOIO0x10, PCI_MAPREG_TYPE_IO0x00000001, 0,
548 &sc->vr_btag, &sc->vr_bhandle, NULL((void *)0), &size, 0)) {
549 printf(": can't map i/o space\n");
550 return;
551 }
552#else
553 if (pci_mapreg_map(pa, VR_PCI_LOMEM0x14, PCI_MAPREG_TYPE_MEM0x00000000, 0,
554 &sc->vr_btag, &sc->vr_bhandle, NULL((void *)0), &size, 0)) {
555 printf(": can't map mem space\n");
556 return;
557 }
558#endif
559
560 /* Allocate interrupt */
561 if (pci_intr_map(pa, &ih)) {
562 printf(": can't map interrupt\n");
563 goto fail;
564 }
565 intrstr = pci_intr_string(pc, ih);
566 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET0x4, vr_intr, sc,
567 self->dv_xname);
568 if (sc->sc_ih == NULL((void *)0)) {
569 printf(": can't establish interrupt");
570 if (intrstr != NULL((void *)0))
571 printf(" at %s", intrstr);
572 printf("\n");
573 goto fail;
574 }
575 printf(": %s", intrstr);
576
577 sc->vr_revid = PCI_REVISION(pa->pa_class)(((pa->pa_class) >> 0) & 0xff);
578 sc->sc_pc = pa->pa_pc;
579 sc->sc_tag = pa->pa_tag;
580
581 vr_chipinit(sc);
582
583 /*
584 * Get station address. The way the Rhine chips work,
585 * you're not allowed to directly access the EEPROM once
586 * they've been programmed a special way. Consequently,
587 * we need to read the node address from the PAR0 and PAR1
588 * registers.
589 */
590 VR_SETBIT(sc, VR_EECSR, VR_EECSR_LOAD)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x74), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x74))) | (
0x20))));
591 DELAY(1000)(*delay_func)(1000);
592 for (i = 0; i < ETHER_ADDR_LEN6; i++)
593 sc->arpcom.ac_enaddr[i] = CSR_READ_1(sc, VR_PAR0 + i)((sc->vr_btag)->read_1((sc->vr_bhandle), (0x00 + i))
);
594
595 /*
596 * A Rhine chip was detected. Inform the world.
597 */
598 printf(", address %s\n", ether_sprintf(sc->arpcom.ac_enaddr));
599
600 sc->sc_dmat = pa->pa_dmat;
601 if (vr_dmamem_alloc(sc, &sc->sc_zeromap, 64, PAGE_SIZE(1 << 12)) != 0) {
602 printf(": failed to allocate zero pad memory\n");
603 return;
604 }
605 bzero(sc->sc_zeromap.vrm_kva, 64)__builtin_bzero((sc->sc_zeromap.vrm_kva), (64));
606 bus_dmamap_sync(sc->sc_dmat, sc->sc_zeromap.vrm_map, 0,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_zeromap.vrm_map), (0), (sc->sc_zeromap.vrm_map->dm_mapsize
), (0x01))
607 sc->sc_zeromap.vrm_map->dm_mapsize, BUS_DMASYNC_PREREAD)(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_zeromap.vrm_map), (0), (sc->sc_zeromap.vrm_map->dm_mapsize
), (0x01));
608 if (vr_dmamem_alloc(sc, &sc->sc_listmap, sizeof(struct vr_list_data),
609 PAGE_SIZE(1 << 12)) != 0) {
610 printf(": failed to allocate dma map\n");
611 goto free_zero;
612 }
613
614 sc->vr_ldata = (struct vr_list_data *)sc->sc_listmap.vrm_kva;
615 sc->vr_quirks = vr_quirks(pa);
616
617 ifp = &sc->arpcom.ac_if;
618 ifp->if_softc = sc;
619 ifp->if_flags = IFF_BROADCAST0x2 | IFF_SIMPLEX0x800 | IFF_MULTICAST0x8000;
620 ifp->if_ioctl = vr_ioctl;
621 ifp->if_start = vr_start;
622 ifp->if_watchdog = vr_watchdog;
623 if (sc->vr_quirks & VR_Q_BABYJUMBO(1<<5))
624 ifp->if_hardmtu = VR_RXLEN_BABYJUMBO1758 -
625 ETHER_HDR_LEN((6 * 2) + 2) - ETHER_CRC_LEN4;
626 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ16);
627
628 ifp->if_capabilitiesif_data.ifi_capabilities = IFCAP_VLAN_MTU0x00000010;
629
630 if (sc->vr_quirks & VR_Q_CSUM(1<<1))
631 ifp->if_capabilitiesif_data.ifi_capabilities |= IFCAP_CSUM_IPv40x00000001 | IFCAP_CSUM_TCPv40x00000002 |
632 IFCAP_CSUM_UDPv40x00000004;
633
634#if NVLAN1 > 0
635 /* if the hardware can do VLAN tagging, say so. */
636 if (sc->vr_quirks & VR_Q_HWTAG(1<<3))
637 ifp->if_capabilitiesif_data.ifi_capabilities |= IFCAP_VLAN_HWTAGGING0x00000020;
638#endif
639
640#ifndef SMALL_KERNEL
641 if (sc->vr_revid >= REV_ID_VT3065_A0x40) {
642 ifp->if_capabilitiesif_data.ifi_capabilities |= IFCAP_WOL0x00008000;
643 ifp->if_wol = vr_wol;
644 vr_wol(ifp, 0);
645 }
646#endif
647
648 /*
649 * Do MII setup.
650 */
651 sc->sc_mii.mii_ifp = ifp;
652 sc->sc_mii.mii_readreg = vr_miibus_readreg;
653 sc->sc_mii.mii_writereg = vr_miibus_writereg;
654 sc->sc_mii.mii_statchg = vr_miibus_statchg;
655 ifmedia_init(&sc->sc_mii.mii_media, 0, vr_ifmedia_upd, vr_ifmedia_sts);
656 mii_attach(self, &sc->sc_mii, 0xffffffff, MII_PHY_ANY-1, MII_OFFSET_ANY-1,
657 0);
658 if (LIST_FIRST(&sc->sc_mii.mii_phys)((&sc->sc_mii.mii_phys)->lh_first) == NULL((void *)0)) {
659 ifmedia_add(&sc->sc_mii.mii_media, IFM_ETHER0x0000000000000100ULL|IFM_NONE2ULL, 0, NULL((void *)0));
660 ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER0x0000000000000100ULL|IFM_NONE2ULL);
661 } else
662 ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER0x0000000000000100ULL|IFM_AUTO0ULL);
663 timeout_set(&sc->sc_to, vr_tick, sc);
664 timeout_set(&sc->sc_rxto, vr_rxtick, sc);
665
666 /*
667 * Call MI attach routines.
668 */
669 if_attach(ifp);
670 ether_ifattach(ifp);
671 return;
672
673free_zero:
674 bus_dmamap_sync(sc->sc_dmat, sc->sc_zeromap.vrm_map, 0,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_zeromap.vrm_map), (0), (sc->sc_zeromap.vrm_map->dm_mapsize
), (0x02))
675 sc->sc_zeromap.vrm_map->dm_mapsize, BUS_DMASYNC_POSTREAD)(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_zeromap.vrm_map), (0), (sc->sc_zeromap.vrm_map->dm_mapsize
), (0x02));
676 vr_dmamem_free(sc, &sc->sc_zeromap);
677fail:
678 bus_space_unmap(sc->vr_btag, sc->vr_bhandle, size);
679}
680
681int
682vr_activate(struct device *self, int act)
683{
684 struct vr_softc *sc = (struct vr_softc *)self;
685 struct ifnet *ifp = &sc->arpcom.ac_if;
686 int rv = 0;
687
688 switch (act) {
689 case DVACT_SUSPEND3:
690 if (ifp->if_flags & IFF_RUNNING0x40)
691 vr_stop(sc);
692 rv = config_activate_children(self, act);
693 break;
694 case DVACT_RESUME4:
695 if (ifp->if_flags & IFF_UP0x1)
696 vr_init(sc);
697 break;
698 default:
699 rv = config_activate_children(self, act);
700 break;
701 }
702 return (rv);
703}
704
705/*
706 * Initialize the transmit descriptors.
707 */
708int
709vr_list_tx_init(struct vr_softc *sc)
710{
711 struct vr_chain_data *cd;
712 struct vr_list_data *ld;
713 int i;
714
715 cd = &sc->vr_cdata;
716 ld = sc->vr_ldata;
717
718 cd->vr_tx_cnt = cd->vr_tx_pkts = 0;
719
720 for (i = 0; i < VR_TX_LIST_CNT128; i++) {
721 cd->vr_tx_chain[i].vr_ptr = &ld->vr_tx_list[i];
722 cd->vr_tx_chain[i].vr_paddr =
723 sc->sc_listmap.vrm_map->dm_segs[0].ds_addr +
724 offsetof(struct vr_list_data, vr_tx_list[i])__builtin_offsetof(struct vr_list_data, vr_tx_list[i]);
725
726 if (bus_dmamap_create(sc->sc_dmat, MCLBYTES, VR_MAXFRAGS,(*(sc->sc_dmat)->_dmamap_create)((sc->sc_dmat), ((1 <<
11)), (8), ((1 << 11)), (0), (0x0001), (&cd->vr_tx_chain
[i].vr_map))
727 MCLBYTES, 0, BUS_DMA_NOWAIT, &cd->vr_tx_chain[i].vr_map)(*(sc->sc_dmat)->_dmamap_create)((sc->sc_dmat), ((1 <<
11)), (8), ((1 << 11)), (0), (0x0001), (&cd->vr_tx_chain
[i].vr_map)))
728 return (ENOBUFS55);
729
730 if (i == (VR_TX_LIST_CNT128 - 1))
731 cd->vr_tx_chain[i].vr_nextdesc =
732 &cd->vr_tx_chain[0];
733 else
734 cd->vr_tx_chain[i].vr_nextdesc =
735 &cd->vr_tx_chain[i + 1];
736 }
737
738 cd->vr_tx_cons = cd->vr_tx_prod = &cd->vr_tx_chain[0];
739
740 return (0);
741}
742
743
744/*
745 * Initialize the RX descriptors and allocate mbufs for them. Note that
746 * we arrange the descriptors in a closed ring, so that the last descriptor
747 * points back to the first.
748 */
749int
750vr_list_rx_init(struct vr_softc *sc)
751{
752 struct vr_chain_data *cd;
753 struct vr_list_data *ld;
754 struct vr_desc *d;
755 int i, nexti;
756
757 cd = &sc->vr_cdata;
758 ld = sc->vr_ldata;
759
760 for (i = 0; i < VR_RX_LIST_CNT128; i++) {
761 if (bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES,(*(sc->sc_dmat)->_dmamap_create)((sc->sc_dmat), ((1 <<
11)), (1), ((1 << 11)), (0), (0x0001 | 0x0200), (&
cd->vr_rx_chain[i].vr_map))
762 0, BUS_DMA_NOWAIT | BUS_DMA_READ,(*(sc->sc_dmat)->_dmamap_create)((sc->sc_dmat), ((1 <<
11)), (1), ((1 << 11)), (0), (0x0001 | 0x0200), (&
cd->vr_rx_chain[i].vr_map))
763 &cd->vr_rx_chain[i].vr_map)(*(sc->sc_dmat)->_dmamap_create)((sc->sc_dmat), ((1 <<
11)), (1), ((1 << 11)), (0), (0x0001 | 0x0200), (&
cd->vr_rx_chain[i].vr_map)))
764 return (ENOBUFS55);
765
766 d = (struct vr_desc *)&ld->vr_rx_list[i];
767 cd->vr_rx_chain[i].vr_ptr = d;
768 cd->vr_rx_chain[i].vr_paddr =
769 sc->sc_listmap.vrm_map->dm_segs[0].ds_addr +
770 offsetof(struct vr_list_data, vr_rx_list[i])__builtin_offsetof(struct vr_list_data, vr_rx_list[i]);
771
772 if (i == (VR_RX_LIST_CNT128 - 1))
773 nexti = 0;
774 else
775 nexti = i + 1;
776
777 cd->vr_rx_chain[i].vr_nextdesc = &cd->vr_rx_chain[nexti];
778 ld->vr_rx_list[i].vr_next =
779 htole32(sc->sc_listmap.vrm_map->dm_segs[0].ds_addr +((__uint32_t)(sc->sc_listmap.vrm_map->dm_segs[0].ds_addr
+ __builtin_offsetof(struct vr_list_data, vr_rx_list[nexti])
))
780 offsetof(struct vr_list_data, vr_rx_list[nexti]))((__uint32_t)(sc->sc_listmap.vrm_map->dm_segs[0].ds_addr
+ __builtin_offsetof(struct vr_list_data, vr_rx_list[nexti])
));
781 }
782
783 cd->vr_rx_prod = cd->vr_rx_cons = &cd->vr_rx_chain[0];
784 if_rxr_init(&sc->sc_rxring, 2, VR_RX_LIST_CNT128 - 1);
785 vr_fill_rx_ring(sc);
786
787 return (0);
788}
789
790void
791vr_fill_rx_ring(struct vr_softc *sc)
792{
793 struct vr_chain_data *cd;
794 struct vr_list_data *ld;
795 u_int slots;
796
797 cd = &sc->vr_cdata;
798 ld = sc->vr_ldata;
799
800 for (slots = if_rxr_get(&sc->sc_rxring, VR_RX_LIST_CNT128);
801 slots > 0; slots--) {
802 if (vr_alloc_mbuf(sc, cd->vr_rx_prod))
803 break;
804
805 cd->vr_rx_prod = cd->vr_rx_prod->vr_nextdesc;
806 }
807
808 if_rxr_put(&sc->sc_rxring, slots)do { (&sc->sc_rxring)->rxr_alive -= (slots); } while
(0);
809 if (if_rxr_inuse(&sc->sc_rxring)((&sc->sc_rxring)->rxr_alive) == 0)
810 timeout_add(&sc->sc_rxto, 0);
811}
812
813/*
814 * A frame has been uploaded: pass the resulting mbuf chain up to
815 * the higher level protocols.
816 */
817void
818vr_rxeof(struct vr_softc *sc)
819{
820 struct mbuf *m;
821 struct mbuf_list ml = MBUF_LIST_INITIALIZER(){ ((void *)0), ((void *)0), 0 };
822 struct ifnet *ifp;
823 struct vr_chain_onefrag *cur_rx;
824 int total_len = 0;
825 u_int32_t rxstat, rxctl;
826
827 ifp = &sc->arpcom.ac_if;
828
829 while (if_rxr_inuse(&sc->sc_rxring)((&sc->sc_rxring)->rxr_alive) > 0) {
830 bus_dmamap_sync(sc->sc_dmat, sc->sc_listmap.vrm_map,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x02 | 0x08))
831 0, sc->sc_listmap.vrm_map->dm_mapsize,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x02 | 0x08))
832 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE)(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x02 | 0x08));
833 rxstat = letoh32(sc->vr_cdata.vr_rx_cons->vr_ptr->vr_status)((__uint32_t)(sc->vr_cdata.vr_rx_cons->vr_ptr->vr_status
));
834 if (rxstat & VR_RXSTAT_OWN0x80000000)
835 break;
836
837 rxctl = letoh32(sc->vr_cdata.vr_rx_cons->vr_ptr->vr_ctl)((__uint32_t)(sc->vr_cdata.vr_rx_cons->vr_ptr->vr_ctl
));
838
839 cur_rx = sc->vr_cdata.vr_rx_cons;
840 m = cur_rx->vr_mbuf;
841 cur_rx->vr_mbuf = NULL((void *)0);
842 sc->vr_cdata.vr_rx_cons = cur_rx->vr_nextdesc;
843 if_rxr_put(&sc->sc_rxring, 1)do { (&sc->sc_rxring)->rxr_alive -= (1); } while (0
);
844
845 /*
846 * If an error occurs, update stats, clear the
847 * status word and leave the mbuf cluster in place:
848 * it should simply get re-used next time this descriptor
849 * comes up in the ring.
850 */
851 if ((rxstat & VR_RXSTAT_RX_OK0x00008000) == 0) {
852 ifp->if_ierrorsif_data.ifi_ierrors++;
853#ifdef VR_DEBUG
854 printf("%s: rx error (%02x):",
855 sc->sc_dev.dv_xname, rxstat & 0x000000ff);
856 if (rxstat & VR_RXSTAT_CRCERR0x00000002)
857 printf(" crc error");
858 if (rxstat & VR_RXSTAT_FRAMEALIGNERR0x00000004)
859 printf(" frame alignment error");
860 if (rxstat & VR_RXSTAT_FIFOOFLOW0x00000008)
861 printf(" FIFO overflow");
862 if (rxstat & VR_RXSTAT_GIANT0x00000010)
863 printf(" received giant packet");
864 if (rxstat & VR_RXSTAT_RUNT0x00000020)
865 printf(" received runt packet");
866 if (rxstat & VR_RXSTAT_BUSERR0x00000040)
867 printf(" system bus error");
868 if (rxstat & VR_RXSTAT_BUFFERR0x00000080)
869 printf(" rx buffer error");
870 printf("\n");
871#endif
872
873 m_freem(m);
874 continue;
875 }
876
877 /* No errors; receive the packet. */
878 total_len = VR_RXBYTES(letoh32(cur_rx->vr_ptr->vr_status))((((__uint32_t)(cur_rx->vr_ptr->vr_status)) & 0x07FF0000
) >> 16);
879
880 bus_dmamap_sync(sc->sc_dmat, cur_rx->vr_map, 0,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (cur_rx
->vr_map), (0), (cur_rx->vr_map->dm_mapsize), (0x02)
)
881 cur_rx->vr_map->dm_mapsize, BUS_DMASYNC_POSTREAD)(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (cur_rx
->vr_map), (0), (cur_rx->vr_map->dm_mapsize), (0x02)
);
882 bus_dmamap_unload(sc->sc_dmat, cur_rx->vr_map)(*(sc->sc_dmat)->_dmamap_unload)((sc->sc_dmat), (cur_rx
->vr_map));
883
884 /*
885 * The VIA Rhine chip includes the CRC with every
886 * received frame, and there's no way to turn this
887 * behavior off so trim the CRC manually.
888 */
889 total_len -= ETHER_CRC_LEN4;
890
891#ifdef __STRICT_ALIGNMENT
892 {
893 struct mbuf *m0;
894 m0 = m_devget(mtod(m, caddr_t)((caddr_t)((m)->m_hdr.mh_data)), total_len, ETHER_ALIGN2);
895 m_freem(m);
896 if (m0 == NULL((void *)0)) {
897 ifp->if_ierrorsif_data.ifi_ierrors++;
898 continue;
899 }
900 m = m0;
901 }
902#else
903 m->m_pkthdrM_dat.MH.MH_pkthdr.len = m->m_lenm_hdr.mh_len = total_len;
904#endif
905
906 if (sc->vr_quirks & VR_Q_CSUM(1<<1) &&
907 (rxstat & VR_RXSTAT_FRAG0x00000040) == 0 &&
908 (rxctl & VR_RXCTL_IP0x00080000) != 0) {
909 /* Checksum is valid for non-fragmented IP packets. */
910 if ((rxctl & VR_RXCTL_IPOK0x00200000) == VR_RXCTL_IPOK0x00200000)
911 m->m_pkthdrM_dat.MH.MH_pkthdr.csum_flags |= M_IPV4_CSUM_IN_OK0x0008;
912 if (rxctl & (VR_RXCTL_TCP0x00040000 | VR_RXCTL_UDP0x00020000) &&
913 ((rxctl & VR_RXCTL_TCPUDPOK0x00100000) != 0))
914 m->m_pkthdrM_dat.MH.MH_pkthdr.csum_flags |= M_TCP_CSUM_IN_OK0x0020 |
915 M_UDP_CSUM_IN_OK0x0080;
916 }
917
918#if NVLAN1 > 0
919 /*
920 * If there's a tagged packet, the 802.1q header will be at the
921 * 4-byte boundary following the CRC. There will be 2 bytes
922 * TPID (0x8100) and 2 bytes TCI (including VLAN ID).
923 * This isn't in the data sheet.
924 */
925 if (rxctl & VR_RXCTL_TAG0x00010000) {
926 int offset = ((total_len + 3) & ~3) + ETHER_CRC_LEN4 + 2;
927 m->m_pkthdrM_dat.MH.MH_pkthdr.ether_vtag = htons(*(u_int16_t *)(__uint16_t)(__builtin_constant_p(*(u_int16_t *) ((u_int8_t *
)m->m_hdr.mh_data + offset)) ? (__uint16_t)(((__uint16_t)(
*(u_int16_t *) ((u_int8_t *)m->m_hdr.mh_data + offset)) &
0xffU) << 8 | ((__uint16_t)(*(u_int16_t *) ((u_int8_t *
)m->m_hdr.mh_data + offset)) & 0xff00U) >> 8) : __swap16md
(*(u_int16_t *) ((u_int8_t *)m->m_hdr.mh_data + offset)))
928 ((u_int8_t *)m->m_data + offset))(__uint16_t)(__builtin_constant_p(*(u_int16_t *) ((u_int8_t *
)m->m_hdr.mh_data + offset)) ? (__uint16_t)(((__uint16_t)(
*(u_int16_t *) ((u_int8_t *)m->m_hdr.mh_data + offset)) &
0xffU) << 8 | ((__uint16_t)(*(u_int16_t *) ((u_int8_t *
)m->m_hdr.mh_data + offset)) & 0xff00U) >> 8) : __swap16md
(*(u_int16_t *) ((u_int8_t *)m->m_hdr.mh_data + offset)));
929 m->m_flagsm_hdr.mh_flags |= M_VLANTAG0x0020;
930 }
931#endif
932
933 ml_enqueue(&ml, m);
934 }
935
936 if (ifiq_input(&ifp->if_rcv, &ml))
937 if_rxr_livelocked(&sc->sc_rxring);
938
939 vr_fill_rx_ring(sc);
940
941 bus_dmamap_sync(sc->sc_dmat, sc->sc_listmap.vrm_map,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x01 | 0x04))
942 0, sc->sc_listmap.vrm_map->dm_mapsize,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x01 | 0x04))
943 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE)(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x01 | 0x04));
944}
945
946void
947vr_rxeoc(struct vr_softc *sc)
948{
949 struct ifnet *ifp;
950 int i;
951
952 ifp = &sc->arpcom.ac_if;
953
954 ifp->if_ierrorsif_data.ifi_ierrors++;
955
956 VR_CLRBIT16(sc, VR_COMMAND, VR_CMD_RX_ON)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) &
~(0x0008))));
957 DELAY(10000)(*delay_func)(10000);
958
959 for (i = 0x400;
960 i && (CSR_READ_2(sc, VR_COMMAND)((sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) & VR_CMD_RX_ON0x0008);
961 i--)
962 ; /* Wait for receiver to stop */
963
964 if (!i) {
965 printf("%s: rx shutdown error!\n", sc->sc_dev.dv_xname);
966 sc->vr_flags |= VR_F_RESTART0x01;
967 return;
968 }
969
970 vr_rxeof(sc);
971
972 CSR_WRITE_4(sc, VR_RXADDR, sc->vr_cdata.vr_rx_cons->vr_paddr)((sc->vr_btag)->write_4((sc->vr_bhandle), (0x18), (sc
->vr_cdata.vr_rx_cons->vr_paddr)));
973 VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RX_ON)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) | (
0x0008))));
974 VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RX_GO)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) | (
0x0040))));
975}
976
977/*
978 * A frame was downloaded to the chip. It's safe for us to clean up
979 * the list buffers.
980 */
981
982void
983vr_txeof(struct vr_softc *sc)
984{
985 struct vr_chain *cur_tx;
986 struct ifnet *ifp;
987
988 ifp = &sc->arpcom.ac_if;
989
990 /*
991 * Go through our tx list and free mbufs for those
992 * frames that have been transmitted.
993 */
994 cur_tx = sc->vr_cdata.vr_tx_cons;
995 while (cur_tx != sc->vr_cdata.vr_tx_prod) {
996 u_int32_t txstat, txctl;
997 int i;
998
999 txstat = letoh32(cur_tx->vr_ptr->vr_status)((__uint32_t)(cur_tx->vr_ptr->vr_status));
1000 txctl = letoh32(cur_tx->vr_ptr->vr_ctl)((__uint32_t)(cur_tx->vr_ptr->vr_ctl));
1001
1002 if ((txstat & VR_TXSTAT_ABRT0x00000100) ||
1003 (txstat & VR_TXSTAT_UDF0x00000800)) {
1004 for (i = 0x400;
1005 i && (CSR_READ_2(sc, VR_COMMAND)((sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) & VR_CMD_TX_ON0x0010);
1006 i--)
1007 ; /* Wait for chip to shutdown */
1008 if (!i) {
1009 printf("%s: tx shutdown timeout\n",
1010 sc->sc_dev.dv_xname);
1011 sc->vr_flags |= VR_F_RESTART0x01;
1012 break;
1013 }
1014 cur_tx->vr_ptr->vr_status = htole32(VR_TXSTAT_OWN)((__uint32_t)(0x80000000));
1015 CSR_WRITE_4(sc, VR_TXADDR, cur_tx->vr_paddr)((sc->vr_btag)->write_4((sc->vr_bhandle), (0x1C), (cur_tx
->vr_paddr)));
1016 break;
1017 }
1018
1019 if (txstat & VR_TXSTAT_OWN0x80000000)
1020 break;
1021
1022 sc->vr_cdata.vr_tx_cnt--;
1023 /* Only the first descriptor in the chain is valid. */
1024 if ((txctl & VR_TXCTL_FIRSTFRAG0x00200000) == 0)
1025 goto next;
1026
1027 if (txstat & VR_TXSTAT_ERRSUM0x00008000) {
1028 ifp->if_oerrorsif_data.ifi_oerrors++;
1029 if (txstat & VR_TXSTAT_DEFER0x00000001)
1030 ifp->if_collisionsif_data.ifi_collisions++;
1031 if (txstat & VR_TXSTAT_LATECOLL0x00000200)
1032 ifp->if_collisionsif_data.ifi_collisions++;
1033 }
1034
1035 ifp->if_collisionsif_data.ifi_collisions +=(txstat & VR_TXSTAT_COLLCNT0x00000078) >> 3;
1036
1037 if (cur_tx->vr_map != NULL((void *)0) && cur_tx->vr_map->dm_nsegs > 0)
1038 bus_dmamap_unload(sc->sc_dmat, cur_tx->vr_map)(*(sc->sc_dmat)->_dmamap_unload)((sc->sc_dmat), (cur_tx
->vr_map));
1039
1040 m_freem(cur_tx->vr_mbuf);
1041 cur_tx->vr_mbuf = NULL((void *)0);
1042 ifq_clr_oactive(&ifp->if_snd);
1043
1044next:
1045 cur_tx = cur_tx->vr_nextdesc;
1046 }
1047
1048 sc->vr_cdata.vr_tx_cons = cur_tx;
1049 if (sc->vr_cdata.vr_tx_cnt == 0)
1050 ifp->if_timer = 0;
1051}
1052
1053void
1054vr_tick(void *xsc)
1055{
1056 struct vr_softc *sc = xsc;
1057 int s;
1058
1059 s = splnet()splraise(0x4);
1060 if (sc->vr_flags & VR_F_RESTART0x01) {
1061 printf("%s: restarting\n", sc->sc_dev.dv_xname);
1062 vr_init(sc);
1063 sc->vr_flags &= ~VR_F_RESTART0x01;
1064 }
1065
1066 mii_tick(&sc->sc_mii);
1067 timeout_add_sec(&sc->sc_to, 1);
1068 splx(s)spllower(s);
1069}
1070
1071void
1072vr_rxtick(void *xsc)
1073{
1074 struct vr_softc *sc = xsc;
1075 int s;
1076
1077 s = splnet()splraise(0x4);
1078 if (if_rxr_inuse(&sc->sc_rxring)((&sc->sc_rxring)->rxr_alive) == 0) {
1079 vr_fill_rx_ring(sc);
1080 if (if_rxr_inuse(&sc->sc_rxring)((&sc->sc_rxring)->rxr_alive) == 0)
1081 timeout_add(&sc->sc_rxto, 1);
1082 }
1083 splx(s)spllower(s);
1084}
1085
1086int
1087vr_intr(void *arg)
1088{
1089 struct vr_softc *sc;
1090 struct ifnet *ifp;
1091 u_int16_t status;
1092 int claimed = 0;
1093
1094 sc = arg;
1095 ifp = &sc->arpcom.ac_if;
1096
1097 /* Suppress unwanted interrupts. */
1098 if (!(ifp->if_flags & IFF_UP0x1)) {
1099 vr_stop(sc);
1100 return 0;
1101 }
1102
1103 status = CSR_READ_2(sc, VR_ISR)((sc->vr_btag)->read_2((sc->vr_bhandle), (0x0C)));
1104 if (status)
1105 CSR_WRITE_2(sc, VR_ISR, status)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x0C), (status
)));
1106
1107 if (status & VR_INTRS(0x0001|0x0002|0x0020| 0x0008|0x0010|0x0040| 0x0004|0x0800)) {
1108 claimed = 1;
1109
1110 if (status & VR_ISR_RX_OK0x0001)
1111 vr_rxeof(sc);
1112
1113 if (status & VR_ISR_RX_DROPPED0x0800) {
1114#ifdef VR_DEBUG
1115 printf("%s: rx packet lost\n", sc->sc_dev.dv_xname);
1116#endif
1117 ifp->if_ierrorsif_data.ifi_ierrors++;
1118 }
1119
1120 if ((status & VR_ISR_RX_ERR0x0004) || (status & VR_ISR_RX_NOBUF0x0020) ||
1121 (status & VR_ISR_RX_OFLOW0x0400)) {
1122#ifdef VR_DEBUG
1123 printf("%s: receive error (%04x)",
1124 sc->sc_dev.dv_xname, status);
1125 if (status & VR_ISR_RX_NOBUF0x0020)
1126 printf(" no buffers");
1127 if (status & VR_ISR_RX_OFLOW0x0400)
1128 printf(" overflow");
1129 printf("\n");
1130#endif
1131 vr_rxeoc(sc);
1132 }
1133
1134 if ((status & VR_ISR_BUSERR0x0040) || (status & VR_ISR_TX_UNDERRUN0x0010)) {
1135 if (status & VR_ISR_BUSERR0x0040)
1136 printf("%s: PCI bus error\n",
1137 sc->sc_dev.dv_xname);
1138 if (status & VR_ISR_TX_UNDERRUN0x0010)
1139 printf("%s: transmit underrun\n",
1140 sc->sc_dev.dv_xname);
1141 vr_init(sc);
1142 status = 0;
1143 }
1144
1145 if ((status & VR_ISR_TX_OK0x0002) || (status & VR_ISR_TX_ABRT0x0008) ||
1146 (status & VR_ISR_TX_ABRT20x2000) || (status & VR_ISR_UDFI0x0200)) {
1147 vr_txeof(sc);
1148 if ((status & VR_ISR_UDFI0x0200) ||
1149 (status & VR_ISR_TX_ABRT20x2000) ||
1150 (status & VR_ISR_TX_ABRT0x0008)) {
1151#ifdef VR_DEBUG
1152 if (status & (VR_ISR_TX_ABRT0x0008 | VR_ISR_TX_ABRT20x2000))
1153 printf("%s: transmit aborted\n",
1154 sc->sc_dev.dv_xname);
1155 if (status & VR_ISR_UDFI0x0200)
1156 printf("%s: transmit underflow\n",
1157 sc->sc_dev.dv_xname);
1158#endif
1159 ifp->if_oerrorsif_data.ifi_oerrors++;
1160 if (sc->vr_cdata.vr_tx_cons->vr_mbuf != NULL((void *)0)) {
1161 VR_SETBIT16(sc, VR_COMMAND,((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) | (
0x0010))))
1162 VR_CMD_TX_ON)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) | (
0x0010))));
1163 VR_SETBIT16(sc, VR_COMMAND,((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) | (
0x0020))))
1164 VR_CMD_TX_GO)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) | (
0x0020))));
1165 }
1166 }
1167 }
1168 }
1169
1170 if (!ifq_empty(&ifp->if_snd)(({ typeof((&ifp->if_snd)->ifq_len) __tmp = *(volatile
typeof((&ifp->if_snd)->ifq_len) *)&((&ifp->
if_snd)->ifq_len); membar_datadep_consumer(); __tmp; }) ==
0))
1171 vr_start(ifp);
1172
1173 return (claimed);
1174}
1175
1176/*
1177 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data
1178 * pointers to the fragment pointers.
1179 */
1180int
1181vr_encap(struct vr_softc *sc, struct vr_chain **cp, struct mbuf *m)
1182{
1183 struct vr_chain *c = *cp;
1184 struct vr_desc *f = NULL((void *)0);
16
←
'f' initialized to a null pointer value
→
1185 u_int32_t vr_ctl = 0, vr_status = 0, intdisable = 0;
1186 bus_dmamap_t txmap;
1187 int i, runt = 0;
1188 int error;
1189
1190 if (sc->vr_quirks & VR_Q_CSUM(1<<1)) {
17
←
Assuming the condition is false
→
18
←
Taking false branch
→
1191 if (m->m_pkthdrM_dat.MH.MH_pkthdr.csum_flags & M_IPV4_CSUM_OUT0x0001)
1192 vr_ctl |= VR_TXCTL_IPCSUM0x00040000;
1193 if (m->m_pkthdrM_dat.MH.MH_pkthdr.csum_flags & M_TCP_CSUM_OUT0x0002)
1194 vr_ctl |= VR_TXCTL_TCPCSUM0x00100000;
1195 if (m->m_pkthdrM_dat.MH.MH_pkthdr.csum_flags & M_UDP_CSUM_OUT0x0004)
1196 vr_ctl |= VR_TXCTL_UDPCSUM0x00080000;
1197 }
1198
1199 if (sc->vr_quirks & VR_Q_NEEDALIGN(1<<0)) {
19
←
Assuming the condition is false
→
20
←
Taking false branch
→
1200 /* Deep copy for chips that need alignment */
1201 error = EFBIG27;
1202 } else {
1203 error = bus_dmamap_load_mbuf(sc->sc_dmat, c->vr_map, m,(*(sc->sc_dmat)->_dmamap_load_mbuf)((sc->sc_dmat), (
c->vr_map), (m), (0x0001 | 0x0400))
1204 BUS_DMA_NOWAIT | BUS_DMA_WRITE)(*(sc->sc_dmat)->_dmamap_load_mbuf)((sc->sc_dmat), (
c->vr_map), (m), (0x0001 | 0x0400));
1205 }
1206
1207 switch (error) {
21
←
Control jumps to 'case 0:' at line 1208
→
1208 case 0:
1209 break;
22
←
 Execution continues on line 1221
→
1210 case EFBIG27:
1211 if (m_defrag(m, M_DONTWAIT0x0002) == 0 &&
1212 bus_dmamap_load_mbuf(sc->sc_dmat, c->vr_map, m,(*(sc->sc_dmat)->_dmamap_load_mbuf)((sc->sc_dmat), (
c->vr_map), (m), (0x0001))
1213 BUS_DMA_NOWAIT)(*(sc->sc_dmat)->_dmamap_load_mbuf)((sc->sc_dmat), (
c->vr_map), (m), (0x0001)) == 0)
1214 break;
1215
1216 /* FALLTHROUGH */
1217 default:
1218 return (ENOBUFS55);
1219 }
1220
1221 bus_dmamap_sync(sc->sc_dmat, c->vr_map, 0, c->vr_map->dm_mapsize,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (c->
vr_map), (0), (c->vr_map->dm_mapsize), (0x04))
1222 BUS_DMASYNC_PREWRITE)(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (c->
vr_map), (0), (c->vr_map->dm_mapsize), (0x04));
1223 if (c->vr_map->dm_mapsize < VR_MIN_FRAMELEN60)
23
←
Assuming field 'dm_mapsize' is >= VR_MIN_FRAMELEN
→
24
←
Taking false branch
→
1224 runt = 1;
1225
1226#if NVLAN1 > 0
1227 /*
1228 * Tell chip to insert VLAN tag if needed.
1229 * This chip expects the VLAN ID (0x0FFF) and the PCP (0xE000)
1230 * in only 15 bits without the gap at 0x1000 (reserved for DEI).
1231 * Therefore we need to de- / re-construct the VLAN header.
1232 */
1233 if (m->m_flagsm_hdr.mh_flags & M_VLANTAG0x0020) {
25
←
Assuming the condition is false
→
1234 u_int32_t vtag = m->m_pkthdrM_dat.MH.MH_pkthdr.ether_vtag;
1235 vtag = EVL_VLANOFTAG(vtag)((vtag) & 0xFFF) | EVL_PRIOFTAG(vtag)(((vtag) >> 13) & 7) << 12;
1236 vr_status |= vtag << VR_TXSTAT_PQSHIFT16;
1237 vr_ctl |= htole32(VR_TXCTL_INSERTTAG)((__uint32_t)(0x00020000));
1238 }
1239#endif
1240
1241 /*
1242 * We only want TX completion interrupts on every Nth packet.
1243 * We need to set VR_TXNEXT_INTDISABLE on every descriptor except
1244 * for the last descriptor of every Nth packet, where we set
1245 * VR_TXCTL_FINT. The former is in the specs for only some chips.
1246 * present: VT6102 VT6105M VT8235M
1247 * not present: VT86C100 6105LOM
1248 */
1249 if (++sc->vr_cdata.vr_tx_pkts % VR_TX_INTR_THRESH8 != 0 &&
26
←
Assuming the condition is false
→
1250 sc->vr_quirks & VR_Q_INTDISABLE(1<<4))
1251 intdisable = VR_TXNEXT_INTDISABLE0x00000001;
1252
1253 c->vr_mbuf = m;
1254 txmap = c->vr_map;
1255 for (i = 0; i < txmap->dm_nsegs; i++) {
27
←
Assuming 'i' is >= field 'dm_nsegs'
→
28
←
Loop condition is false. Execution continues on line 1270
→
1256 if (i != 0)
1257 *cp = c = c->vr_nextdesc;
1258 f = c->vr_ptr;
1259 f->vr_ctl = htole32(txmap->dm_segs[i].ds_len | VR_TXCTL_TLINK |((__uint32_t)(txmap->dm_segs[i].ds_len | 0x00008000 | vr_ctl
))
1260 vr_ctl)((__uint32_t)(txmap->dm_segs[i].ds_len | 0x00008000 | vr_ctl
));
1261 if (i == 0)
1262 f->vr_ctl |= htole32(VR_TXCTL_FIRSTFRAG)((__uint32_t)(0x00200000));
1263 f->vr_status = htole32(vr_status)((__uint32_t)(vr_status));
1264 f->vr_data = htole32(txmap->dm_segs[i].ds_addr)((__uint32_t)(txmap->dm_segs[i].ds_addr));
1265 f->vr_next = htole32(c->vr_nextdesc->vr_paddr | intdisable)((__uint32_t)(c->vr_nextdesc->vr_paddr | intdisable));
1266 sc->vr_cdata.vr_tx_cnt++;
1267 }
1268
1269 /* Pad runt frames */
1270 if (runt
28.1
'runt' is 0
) {
29
←
Taking false branch
→
1271 *cp = c = c->vr_nextdesc;
1272 f = c->vr_ptr;
1273 f->vr_ctl = htole32((VR_MIN_FRAMELEN - txmap->dm_mapsize) |((__uint32_t)((60 - txmap->dm_mapsize) | 0x00008000 | vr_ctl
))
1274 VR_TXCTL_TLINK | vr_ctl)((__uint32_t)((60 - txmap->dm_mapsize) | 0x00008000 | vr_ctl
));
1275 f->vr_status = htole32(vr_status)((__uint32_t)(vr_status));
1276 f->vr_data = htole32(sc->sc_zeromap.vrm_map->dm_segs[0].ds_addr)((__uint32_t)(sc->sc_zeromap.vrm_map->dm_segs[0].ds_addr
));
1277 f->vr_next = htole32(c->vr_nextdesc->vr_paddr | intdisable)((__uint32_t)(c->vr_nextdesc->vr_paddr | intdisable));
1278 sc->vr_cdata.vr_tx_cnt++;
1279 }
1280
1281 /* Set EOP on the last descriptor */
1282 f->vr_ctl |= htole32(VR_TXCTL_LASTFRAG)((__uint32_t)(0x00400000));
30
←
Access to field 'vr_ctl' results in a dereference of a null pointer (loaded from variable 'f')
1283
1284 if (sc->vr_cdata.vr_tx_pkts % VR_TX_INTR_THRESH8 == 0)
1285 f->vr_ctl |= htole32(VR_TXCTL_FINT)((__uint32_t)(0x00800000));
1286
1287 return (0);
1288}
1289
1290/*
1291 * Main transmit routine. To avoid having to do mbuf copies, we put pointers
1292 * to the mbuf data regions directly in the transmit lists. We also save a
1293 * copy of the pointers since the transmit list fragment pointers are
1294 * physical addresses.
1295 */
1296
1297void
1298vr_start(struct ifnet *ifp)
1299{
1300 struct vr_softc *sc;
1301 struct mbuf *m;
1302 struct vr_chain *cur_tx, *head_tx;
1303 unsigned int queued = 0;
1304
1305 sc = ifp->if_softc;
1306
1307 if (!(ifp->if_flags & IFF_RUNNING0x40) || ifq_is_oactive(&ifp->if_snd))
5
←
Assuming the condition is false
→
6
←
Assuming the condition is false
→
7
←
Taking false branch
→
1308 return;
1309
1310 if (sc->vr_link == 0)
8
←
Assuming field 'vr_link' is not equal to 0
→
9
←
Taking false branch
→
1311 return;
1312
1313 cur_tx = sc->vr_cdata.vr_tx_prod;
1314 for (;;) {
10
←
Loop condition is true. Entering loop body
→
1315 if (sc->vr_cdata.vr_tx_cnt + VR_MAXFRAGS8 >=
11
←
Assuming the condition is false
→
12
←
Taking false branch
→
1316 VR_TX_LIST_CNT128 - 1) {
1317 ifq_set_oactive(&ifp->if_snd);
1318 break;
1319 }
1320
1321 m = ifq_dequeue(&ifp->if_snd);
1322 if (m == NULL((void *)0))
13
←
Assuming 'm' is not equal to NULL
→
14
←
Taking false branch
→
1323 break;
1324
1325 /* Pack the data into the descriptor. */
1326 head_tx = cur_tx;
1327 if (vr_encap(sc, &cur_tx, m)) {
15
←
Calling 'vr_encap'
→
1328 m_freem(m);
1329 ifp->if_oerrorsif_data.ifi_oerrors++;
1330 continue;
1331 }
1332 queued++;
1333
1334 /* Only set ownership bit on first descriptor */
1335 head_tx->vr_ptr->vr_status |= htole32(VR_TXSTAT_OWN)((__uint32_t)(0x80000000));
1336
1337#if NBPFILTER1 > 0
1338 /*
1339 * If there's a BPF listener, bounce a copy of this frame
1340 * to him.
1341 */
1342 if (ifp->if_bpf)
1343 bpf_mtap_ether(ifp->if_bpf, m, BPF_DIRECTION_OUT(1 << 1));
1344#endif
1345 cur_tx = cur_tx->vr_nextdesc;
1346 }
1347 if (queued > 0) {
1348 sc->vr_cdata.vr_tx_prod = cur_tx;
1349
1350 bus_dmamap_sync(sc->sc_dmat, sc->sc_listmap.vrm_map, 0,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x04|0x01))
1351 sc->sc_listmap.vrm_map->dm_mapsize,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x04|0x01))
1352 BUS_DMASYNC_PREWRITE|BUS_DMASYNC_PREREAD)(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x04|0x01));
1353
1354 /* Tell the chip to start transmitting. */
1355 VR_SETBIT16(sc, VR_COMMAND, /*VR_CMD_TX_ON|*/VR_CMD_TX_GO)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) | (
0x0020))));
1356
1357 /* Set a timeout in case the chip goes out to lunch. */
1358 ifp->if_timer = 5;
1359 }
1360}
1361
1362void
1363vr_chipinit(struct vr_softc *sc)
1364{
1365 /*
1366 * Make sure it isn't suspended.
1367 */
1368 if (pci_get_capability(sc->sc_pc, sc->sc_tag,
1369 PCI_CAP_PWRMGMT0x01, NULL((void *)0), NULL((void *)0)))
1370 VR_CLRBIT(sc, VR_STICKHW, (VR_STICKHW_DS0|VR_STICKHW_DS1))((sc->vr_btag)->write_1((sc->vr_bhandle), (0x83), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x83))) &
~((0x01|0x02)))));
1371
1372 /* Reset the adapter. */
1373 vr_reset(sc);
1374
1375 /*
1376 * Turn on bit2 (MIION) in PCI configuration register 0x53 during
1377 * initialization and disable AUTOPOLL.
1378 */
1379 pci_conf_write(sc->sc_pc, sc->sc_tag, VR_PCI_MODE0x50,
1380 pci_conf_read(sc->sc_pc, sc->sc_tag, VR_PCI_MODE0x50) |
1381 (VR_MODE3_MIION0x04 << 24));
1382 VR_CLRBIT(sc, VR_MIICMD, VR_MIICMD_AUTOPOLL)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x70), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x70))) &
~(0x80))));
1383}
1384
1385void
1386vr_init(void *xsc)
1387{
1388 struct vr_softc *sc = xsc;
1389 struct ifnet *ifp = &sc->arpcom.ac_if;
1390 struct mii_data *mii = &sc->sc_mii;
1391 int s, i;
1392
1393 s = splnet()splraise(0x4);
1394
1395 /*
1396 * Cancel pending I/O and free all RX/TX buffers.
1397 */
1398 vr_stop(sc);
1399 vr_chipinit(sc);
1400
1401 /*
1402 * Set our station address.
1403 */
1404 for (i = 0; i < ETHER_ADDR_LEN6; i++)
1405 CSR_WRITE_1(sc, VR_PAR0 + i, sc->arpcom.ac_enaddr[i])((sc->vr_btag)->write_1((sc->vr_bhandle), (0x00 + i)
, (sc->arpcom.ac_enaddr[i])));
1406
1407 /* Set DMA size */
1408 VR_CLRBIT(sc, VR_BCR0, VR_BCR0_DMA_LENGTH)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x6E), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x6E))) &
~(0x07))));
1409 VR_SETBIT(sc, VR_BCR0, VR_BCR0_DMA_STORENFWD)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x6E), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x6E))) | (
0x07))));
1410
1411 /*
1412 * BCR0 and BCR1 can override the RXCFG and TXCFG registers,
1413 * so we must set both.
1414 */
1415 VR_CLRBIT(sc, VR_BCR0, VR_BCR0_RX_THRESH)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x6E), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x6E))) &
~(0x38))));
1416 VR_SETBIT(sc, VR_BCR0, VR_BCR0_RXTHRESH128BYTES)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x6E), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x6E))) | (
0x10))));
1417
1418 VR_CLRBIT(sc, VR_BCR1, VR_BCR1_TX_THRESH)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x6F), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x6F))) &
~(0x38))));
1419 VR_SETBIT(sc, VR_BCR1, VR_BCR1_TXTHRESHSTORENFWD)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x6F), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x6F))) | (
0x38))));
1420
1421 VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_THRESH)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x06), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x06))) &
~(0xE0))));
1422 VR_SETBIT(sc, VR_RXCFG, VR_RXTHRESH_128BYTES)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x06), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x06))) | (
0x40))));
1423
1424 VR_CLRBIT(sc, VR_TXCFG, VR_TXCFG_TX_THRESH)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x07), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x07))) &
~(0xE0))));
1425 VR_SETBIT(sc, VR_TXCFG, VR_TXTHRESH_STORENFWD)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x07), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x07))) | (
0xE0))));
1426
1427 if (ifp->if_capabilitiesif_data.ifi_capabilities & IFCAP_VLAN_HWTAGGING0x00000020)
1428 VR_SETBIT(sc, VR_TXCFG, VR_TXCFG_TXTAGEN)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x07), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x07))) | (
0x01))));
1429
1430 /* Init circular RX list. */
1431 if (vr_list_rx_init(sc) == ENOBUFS55) {
1432 printf("%s: initialization failed: no memory for rx buffers\n",
1433 sc->sc_dev.dv_xname);
1434 vr_stop(sc);
1435 splx(s)spllower(s);
1436 return;
1437 }
1438
1439 /*
1440 * Init tx descriptors.
1441 */
1442 if (vr_list_tx_init(sc) == ENOBUFS55) {
1443 printf("%s: initialization failed: no memory for tx buffers\n",
1444 sc->sc_dev.dv_xname);
1445 vr_stop(sc);
1446 splx(s)spllower(s);
1447 return;
1448 }
1449
1450 /*
1451 * Program promiscuous mode and multicast filters.
1452 */
1453 vr_iff(sc);
1454
1455 /*
1456 * Load the address of the RX list.
1457 */
1458 CSR_WRITE_4(sc, VR_RXADDR, sc->vr_cdata.vr_rx_cons->vr_paddr)((sc->vr_btag)->write_4((sc->vr_bhandle), (0x18), (sc
->vr_cdata.vr_rx_cons->vr_paddr)));
1459
1460 /* Enable receiver and transmitter. */
1461 CSR_WRITE_2(sc, VR_COMMAND, VR_CMD_TX_NOPOLL|VR_CMD_START|((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), (0x0800
|0x0002| 0x0010|0x0008| 0x0040)))
1462 VR_CMD_TX_ON|VR_CMD_RX_ON|((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), (0x0800
|0x0002| 0x0010|0x0008| 0x0040)))
1463 VR_CMD_RX_GO)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), (0x0800
|0x0002| 0x0010|0x0008| 0x0040)));
1464
1465 CSR_WRITE_4(sc, VR_TXADDR, sc->sc_listmap.vrm_map->dm_segs[0].ds_addr +((sc->vr_btag)->write_4((sc->vr_bhandle), (0x1C), (sc
->sc_listmap.vrm_map->dm_segs[0].ds_addr + __builtin_offsetof
(struct vr_list_data, vr_tx_list[0]))))
1466 offsetof(struct vr_list_data, vr_tx_list[0]))((sc->vr_btag)->write_4((sc->vr_bhandle), (0x1C), (sc
->sc_listmap.vrm_map->dm_segs[0].ds_addr + __builtin_offsetof
(struct vr_list_data, vr_tx_list[0]))));
1467
1468 /*
1469 * Enable interrupts.
1470 */
1471 CSR_WRITE_2(sc, VR_ISR, 0xFFFF)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x0C), (0xFFFF
)));
1472 CSR_WRITE_2(sc, VR_IMR, VR_INTRS)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x0E), ((
0x0001|0x0002|0x0020| 0x0008|0x0010|0x0040| 0x0004|0x0800))));
1473
1474 /* Restore state of BMCR */
1475 sc->vr_link = 1;
1476 mii_mediachg(mii);
1477
1478 ifp->if_flags |= IFF_RUNNING0x40;
1479 ifq_clr_oactive(&ifp->if_snd);
1480
1481 if (!timeout_pending(&sc->sc_to)((&sc->sc_to)->to_flags & 0x02))
1482 timeout_add_sec(&sc->sc_to, 1);
1483
1484 splx(s)spllower(s);
1485}
1486
1487/*
1488 * Set media options.
1489 */
1490int
1491vr_ifmedia_upd(struct ifnet *ifp)
1492{
1493 struct vr_softc *sc = ifp->if_softc;
1494
1495 if (ifp->if_flags & IFF_UP0x1)
1496 vr_init(sc);
1497
1498 return (0);
1499}
1500
1501/*
1502 * Report current media status.
1503 */
1504void
1505vr_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
1506{
1507 struct vr_softc *sc = ifp->if_softc;
1508 struct mii_data *mii = &sc->sc_mii;
1509
1510 mii_pollstat(mii);
1511 ifmr->ifm_active = mii->mii_media_active;
1512 ifmr->ifm_status = mii->mii_media_status;
1513}
1514
1515int
1516vr_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
1517{
1518 struct vr_softc *sc = ifp->if_softc;
1519 struct ifreq *ifr = (struct ifreq *) data;
1520 int s, error = 0;
1521
1522 s = splnet()splraise(0x4);
1523
1524 switch(command) {
1525 case SIOCSIFADDR((unsigned long)0x80000000 | ((sizeof(struct ifreq) & 0x1fff
) << 16) | ((('i')) << 8) | ((12))):
1526 ifp->if_flags |= IFF_UP0x1;
1527 if (!(ifp->if_flags & IFF_RUNNING0x40))
1528 vr_init(sc);
1529 break;
1530
1531 case SIOCSIFFLAGS((unsigned long)0x80000000 | ((sizeof(struct ifreq) & 0x1fff
) << 16) | ((('i')) << 8) | ((16))):
1532 if (ifp->if_flags & IFF_UP0x1) {
1533 if (ifp->if_flags & IFF_RUNNING0x40)
1534 error = ENETRESET52;
1535 else
1536 vr_init(sc);
1537 } else {
1538 if (ifp->if_flags & IFF_RUNNING0x40)
1539 vr_stop(sc);
1540 }
1541 break;
1542
1543 case SIOCGIFMEDIA(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof
(struct ifmediareq) & 0x1fff) << 16) | ((('i')) <<
8) | ((56))):
1544 case SIOCSIFMEDIA(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof
(struct ifreq) & 0x1fff) << 16) | ((('i')) <<
8) | ((55))):
1545 error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, command);
1546 break;
1547
1548 case SIOCGIFRXR((unsigned long)0x80000000 | ((sizeof(struct ifreq) & 0x1fff
) << 16) | ((('i')) << 8) | ((170))):
1549 error = if_rxr_ioctl((struct if_rxrinfo *)ifr->ifr_dataifr_ifru.ifru_data,
1550 NULL((void *)0), MCLBYTES(1 << 11), &sc->sc_rxring);
1551 break;
1552
1553 default:
1554 error = ether_ioctl(ifp, &sc->arpcom, command, data);
1555 }
1556
1557 if (error == ENETRESET52) {
1558 if (ifp->if_flags & IFF_RUNNING0x40)
1559 vr_iff(sc);
1560 error = 0;
1561 }
1562
1563 splx(s)spllower(s);
1564 return(error);
1565}
1566
1567void
1568vr_watchdog(struct ifnet *ifp)
1569{
1570 struct vr_softc *sc;
1571
1572 sc = ifp->if_softc;
1573
1574 /*
1575 * Since we're only asking for completion interrupts only every
1576 * few packets, occasionally the watchdog will fire when we have
1577 * some TX descriptors to reclaim, so check for that first.
1578 */
1579 vr_txeof(sc);
1580 if (sc->vr_cdata.vr_tx_cnt
0.1
Field 'vr_tx_cnt' is not equal to 0
 == 0)
1
Taking false branch
→
1581 return;
1582
1583 ifp->if_oerrorsif_data.ifi_oerrors++;
1584 printf("%s: watchdog timeout\n", sc->sc_dev.dv_xname);
1585 vr_init(sc);
1586
1587 if (!ifq_empty(&ifp->if_snd)(({ typeof((&ifp->if_snd)->ifq_len) __tmp = *(volatile
typeof((&ifp->if_snd)->ifq_len) *)&((&ifp->
if_snd)->ifq_len); membar_datadep_consumer(); __tmp; }) ==
0))
2
←
Assuming the condition is false
→
3
←
Taking true branch
→
1588 vr_start(ifp);
4
←
Calling 'vr_start'
→
1589}
1590
1591/*
1592 * Stop the adapter and free any mbufs allocated to the
1593 * RX and TX lists.
1594 */
1595void
1596vr_stop(struct vr_softc *sc)
1597{
1598 int i;
1599 struct ifnet *ifp;
1600 bus_dmamap_t map;
1601
1602 ifp = &sc->arpcom.ac_if;
1603 ifp->if_timer = 0;
1604
1605 timeout_del(&sc->sc_to);
1606 timeout_del(&sc->sc_rxto);
1607
1608 ifp->if_flags &= ~IFF_RUNNING0x40;
1609 ifq_clr_oactive(&ifp->if_snd);
1610
1611 VR_SETBIT16(sc, VR_COMMAND, VR_CMD_STOP)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) | (
0x0004))));
1612 VR_CLRBIT16(sc, VR_COMMAND, (VR_CMD_RX_ON|VR_CMD_TX_ON))((sc->vr_btag)->write_2((sc->vr_bhandle), (0x08), ((
(sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) &
~((0x0008|0x0010)))));
1613
1614 /* wait for xfers to shutdown */
1615 for (i = VR_TIMEOUT1000; i > 0; i--) {
1616 DELAY(10)(*delay_func)(10);
1617 if (!(CSR_READ_2(sc, VR_COMMAND)((sc->vr_btag)->read_2((sc->vr_bhandle), (0x08))) & (VR_CMD_TX_ON0x0010|VR_CMD_RX_ON0x0008)))
1618 break;
1619 }
1620#ifdef VR_DEBUG
1621 if (i == 0)
1622 printf("%s: rx shutdown error!\n", sc->sc_dev.dv_xname);
1623#endif
1624 CSR_WRITE_2(sc, VR_IMR, 0x0000)((sc->vr_btag)->write_2((sc->vr_bhandle), (0x0E), (0x0000
)));
1625 CSR_WRITE_4(sc, VR_TXADDR, 0x00000000)((sc->vr_btag)->write_4((sc->vr_bhandle), (0x1C), (0x00000000
)));
1626 CSR_WRITE_4(sc, VR_RXADDR, 0x00000000)((sc->vr_btag)->write_4((sc->vr_bhandle), (0x18), (0x00000000
)));
1627
1628 /*
1629 * Free data in the RX lists.
1630 */
1631 for (i = 0; i < VR_RX_LIST_CNT128; i++) {
1632 if (sc->vr_cdata.vr_rx_chain[i].vr_mbuf != NULL((void *)0)) {
1633 m_freem(sc->vr_cdata.vr_rx_chain[i].vr_mbuf);
1634 sc->vr_cdata.vr_rx_chain[i].vr_mbuf = NULL((void *)0);
1635 }
1636 map = sc->vr_cdata.vr_rx_chain[i].vr_map;
1637 if (map != NULL((void *)0)) {
1638 if (map->dm_nsegs > 0)
1639 bus_dmamap_unload(sc->sc_dmat, map)(*(sc->sc_dmat)->_dmamap_unload)((sc->sc_dmat), (map
));
1640 bus_dmamap_destroy(sc->sc_dmat, map)(*(sc->sc_dmat)->_dmamap_destroy)((sc->sc_dmat), (map
));
1641 sc->vr_cdata.vr_rx_chain[i].vr_map = NULL((void *)0);
1642 }
1643 }
1644 bzero(&sc->vr_ldata->vr_rx_list, sizeof(sc->vr_ldata->vr_rx_list))__builtin_bzero((&sc->vr_ldata->vr_rx_list), (sizeof
(sc->vr_ldata->vr_rx_list)));
1645
1646 /*
1647 * Free the TX list buffers.
1648 */
1649 for (i = 0; i < VR_TX_LIST_CNT128; i++) {
1650 if (sc->vr_cdata.vr_tx_chain[i].vr_mbuf != NULL((void *)0)) {
1651 m_freem(sc->vr_cdata.vr_tx_chain[i].vr_mbuf);
1652 sc->vr_cdata.vr_tx_chain[i].vr_mbuf = NULL((void *)0);
1653 ifp->if_oerrorsif_data.ifi_oerrors++;
1654 }
1655 map = sc->vr_cdata.vr_tx_chain[i].vr_map;
1656 if (map != NULL((void *)0)) {
1657 if (map->dm_nsegs > 0)
1658 bus_dmamap_unload(sc->sc_dmat, map)(*(sc->sc_dmat)->_dmamap_unload)((sc->sc_dmat), (map
));
1659 bus_dmamap_destroy(sc->sc_dmat, map)(*(sc->sc_dmat)->_dmamap_destroy)((sc->sc_dmat), (map
));
1660 sc->vr_cdata.vr_tx_chain[i].vr_map = NULL((void *)0);
1661 }
1662 }
1663 bzero(&sc->vr_ldata->vr_tx_list, sizeof(sc->vr_ldata->vr_tx_list))__builtin_bzero((&sc->vr_ldata->vr_tx_list), (sizeof
(sc->vr_ldata->vr_tx_list)));
1664}
1665
1666#ifndef SMALL_KERNEL
1667int
1668vr_wol(struct ifnet *ifp, int enable)
1669{
1670 struct vr_softc *sc = ifp->if_softc;
1671
1672 /* Clear WOL configuration */
1673 CSR_WRITE_1(sc, VR_WOLCRCLR, 0xFF)((sc->vr_btag)->write_1((sc->vr_bhandle), (0xA4), (0xFF
)));
1674
1675 /* Clear event status bits. */
1676 CSR_WRITE_1(sc, VR_PWRCSRCLR, 0xFF)((sc->vr_btag)->write_1((sc->vr_bhandle), (0xAC), (0xFF
)));
1677
1678 /* Disable PME# assertion upon wake event. */
1679 VR_CLRBIT(sc, VR_STICKHW, VR_STICKHW_WOL_ENB)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x83), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x83))) &
~(0x04))));
1680 VR_SETBIT(sc, VR_WOLCFGCLR, VR_WOLCFG_PMEOVR)((sc->vr_btag)->write_1((sc->vr_bhandle), (0xA7), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0xA7))) | (
0x80))));
1681
1682 if (enable) {
1683 VR_SETBIT(sc, VR_WOLCRSET, VR_WOLCR_MAGIC)((sc->vr_btag)->write_1((sc->vr_bhandle), (0xA0), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0xA0))) | (
0x20))));
1684
1685 /* Enable PME# assertion upon wake event. */
1686 VR_SETBIT(sc, VR_STICKHW, VR_STICKHW_WOL_ENB)((sc->vr_btag)->write_1((sc->vr_bhandle), (0x83), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0x83))) | (
0x04))));
1687 VR_SETBIT(sc, VR_WOLCFGSET, VR_WOLCFG_PMEOVR)((sc->vr_btag)->write_1((sc->vr_bhandle), (0xA3), ((
(sc->vr_btag)->read_1((sc->vr_bhandle), (0xA3))) | (
0x80))));
1688 }
1689
1690 return (0);
1691}
1692#endif
1693
1694int
1695vr_alloc_mbuf(struct vr_softc *sc, struct vr_chain_onefrag *r)
1696{
1697 struct vr_desc *d;
1698 struct mbuf *m;
1699
1700 if (r == NULL((void *)0))
1701 return (EINVAL22);
1702
1703 m = MCLGETL(NULL, M_DONTWAIT, MCLBYTES)m_clget((((void *)0)), (0x0002), ((1 << 11)));
1704 if (!m)
1705 return (ENOBUFS55);
1706
1707 m->m_lenm_hdr.mh_len = m->m_pkthdrM_dat.MH.MH_pkthdr.len = MCLBYTES(1 << 11);
1708 m_adj(m, sizeof(u_int64_t));
1709
1710 if (bus_dmamap_load_mbuf(sc->sc_dmat, r->vr_map, m, BUS_DMA_NOWAIT)(*(sc->sc_dmat)->_dmamap_load_mbuf)((sc->sc_dmat), (
r->vr_map), (m), (0x0001))) {
1711 m_free(m);
1712 return (ENOBUFS55);
1713 }
1714
1715 bus_dmamap_sync(sc->sc_dmat, r->vr_map, 0, r->vr_map->dm_mapsize,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (r->
vr_map), (0), (r->vr_map->dm_mapsize), (0x01))
1716 BUS_DMASYNC_PREREAD)(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (r->
vr_map), (0), (r->vr_map->dm_mapsize), (0x01));
1717
1718 /* Reinitialize the RX descriptor */
1719 r->vr_mbuf = m;
1720 d = r->vr_ptr;
1721 d->vr_data = htole32(r->vr_map->dm_segs[0].ds_addr)((__uint32_t)(r->vr_map->dm_segs[0].ds_addr));
1722 if (sc->vr_quirks & VR_Q_BABYJUMBO(1<<5))
1723 d->vr_ctl = htole32(VR_RXCTL | VR_RXLEN_BABYJUMBO)((__uint32_t)((0x00008000|0x00800000) | 1758));
1724 else
1725 d->vr_ctl = htole32(VR_RXCTL | VR_RXLEN)((__uint32_t)((0x00008000|0x00800000) | 1524));
1726
1727 bus_dmamap_sync(sc->sc_dmat, sc->sc_listmap.vrm_map, 0,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x04))
1728 sc->sc_listmap.vrm_map->dm_mapsize, BUS_DMASYNC_PREWRITE)(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x04));
1729
1730 d->vr_status = htole32(VR_RXSTAT)((__uint32_t)((0x00000200|0x00000100|0x80000000)));
1731
1732 bus_dmamap_sync(sc->sc_dmat, sc->sc_listmap.vrm_map, 0,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x04 | 0x01))
1733 sc->sc_listmap.vrm_map->dm_mapsize,(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x04 | 0x01))
1734 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD)(*(sc->sc_dmat)->_dmamap_sync)((sc->sc_dmat), (sc->
sc_listmap.vrm_map), (0), (sc->sc_listmap.vrm_map->dm_mapsize
), (0x04 | 0x01));
1735
1736 return (0);
1737}