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|
/* $OpenBSD: if_san_common.c,v 1.13 2009/02/08 20:07:44 chl Exp $ */
/*-
* Copyright (c) 2001-2004 Sangoma Technologies (SAN)
* All rights reserved. www.sangoma.com
*
* This code is written by Alex Feldman <al.feldman@sangoma.com> for SAN.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of Sangoma Technologies nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY SANGOMA TECHNOLOGIES AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
# include <sys/types.h>
# include <sys/param.h>
# include <sys/systm.h>
# include <sys/syslog.h>
# include <sys/ioccom.h>
# include <sys/conf.h>
# include <sys/malloc.h>
# include <sys/errno.h>
# include <sys/exec.h>
# include <sys/mbuf.h>
# include <sys/proc.h>
# include <sys/socket.h>
# include <sys/kernel.h>
# include <sys/time.h>
# include <sys/timeout.h>
# include <net/bpf.h>
# include <net/if_dl.h>
# include <net/if_types.h>
# include <net/if.h>
# include <net/netisr.h>
# include <net/route.h>
# include <net/if_media.h>
# include <net/ppp_defs.h>
# include <net/if_ppp.h>
# include <net/if_sppp.h>
# include <netinet/in_systm.h>
# include <netinet/in.h>
# include <netinet/in_var.h>
# include <netinet/udp.h>
# include <netinet/ip.h>
# include <dev/pci/if_san_common.h>
# include <dev/pci/if_san_obsd.h>
#ifdef _DEBUG_
#define STATIC
#else
#define STATIC static
#endif
/* WAN link driver entry points */
#if 0
static int shutdown(sdla_t *card);
#endif
/* Miscellaneous functions */
static int wan_ioctl(struct ifnet*, int, struct ifreq *);
static int sdla_isr(void *);
static void release_hw(sdla_t *card);
static int wan_ioctl_dump(sdla_t *, void *);
static int wan_ioctl_hwprobe(struct ifnet *, void *);
/*
* Global Data
* Note: All data must be explicitly initialized!!!
*/
/* private data */
extern char *san_drvname;
LIST_HEAD(, sdla) wan_cardlist = LIST_HEAD_INITIALIZER(&wan_cardlist);
#if 0
static san_detach(void)
{
wanpipe_common_t *common;
sdla_t *card, *tmp_card;
int err = 0;
card = LIST_FIRST(&wan_cardlist);
while (card) {
if (card->disable_comm)
card->disable_comm(card);
while ((common = LIST_FIRST(&card->dev_head))) {
LIST_REMOVE(common, next);
if (card->del_if) {
struct ifnet *ifp =
(struct ifnet*)&common->ifp;
log(LOG_INFO, "%s: Deleting interface...\n",
ifp->if_xname);
card->del_if(card, ifp);
}
}
log(LOG_INFO, "%s: Shutdown device\n", card->devname);
shutdown(card);
tmp_card = card;
card = LIST_NEXT(card, next);
LIST_REMOVE(tmp_card, next);
free(tmp_card, M_DEVBUF);
}
log(LOG_INFO, "\n");
log(LOG_INFO, "%s: WANPIPE Generic Modules Unloaded.\n",
san_drvname);
err = sdladrv_exit();
return err;
}
#endif
int
san_dev_attach(void *hw, u_int8_t *devname, int namelen)
{
sdla_t *card;
wanpipe_common_t *common = NULL;
int err = 0;
card = malloc(sizeof(*card), M_DEVBUF, M_NOWAIT | M_ZERO);
if (!card) {
log(LOG_INFO, "%s: Failed allocate new card!\n",
san_drvname);
return (EINVAL);
}
card->magic = WANPIPE_MAGIC;
wanpipe_generic_name(card, card->devname, sizeof(card->devname));
strlcpy(devname, card->devname, namelen);
card->hw = hw;
LIST_INIT(&card->dev_head);
sdla_getcfg(card->hw, SDLA_CARDTYPE, &card->type);
if (sdla_is_te1(card->hw))
sdla_te_defcfg(&card->fe_te.te_cfg);
err = sdla_setup(card->hw);
if (err) {
log(LOG_INFO, "%s: Hardware setup Failed %d\n",
card->devname,err);
return (EINVAL);
}
err = sdla_intr_establish(card->hw, sdla_isr, (void*)card);
if (err) {
log(LOG_INFO, "%s: Failed set interrupt handler!\n",
card->devname);
sdla_down(card->hw);
return (EINVAL);
}
switch (card->type) {
case SDLA_AFT:
#if defined(DEBUG_INIT)
log(LOG_INFO, "%s: Starting AFT Hardware Init.\n",
card->devname);
#endif
common = wan_xilinx_init(card);
break;
}
if (common == NULL) {
release_hw(card);
card->configured = 0;
return (EINVAL);
}
LIST_INSERT_HEAD(&card->dev_head, common, next);
/* Reserve I/O region and schedule background task */
card->critical = 0;
card->state = WAN_DISCONNECTED;
card->ioctl = wan_ioctl;
return (0);
}
/*
* Shut down WAN link driver.
* o shut down adapter hardware
* o release system resources.
*
*/
#if 0
static int
shutdown (sdla_t *card)
{
int err=0;
if (card->state == WAN_UNCONFIGURED) {
return 0;
}
card->state = WAN_UNCONFIGURED;
bit_set((u_int8_t*)&card->critical, PERI_CRIT);
/* In case of piggibacking, make sure that
* we never try to shutdown both devices at the same
* time, because they depend on one another */
card->state = WAN_UNCONFIGURED;
/* Release Resources */
release_hw(card);
/* only free the allocated I/O range if not an S514 adapter */
if (!card->configured) {
card->hw = NULL;
if (card->same_cpu) {
card->same_cpu->hw = NULL;
card->same_cpu->same_cpu = NULL;
card->same_cpu=NULL;
}
}
bit_clear((u_int8_t*)&card->critical, PERI_CRIT);
return err;
}
#endif
static void
release_hw(sdla_t *card)
{
log(LOG_INFO, "%s: Master shutting down\n",card->devname);
sdla_down(card->hw);
sdla_intr_disestablish(card->hw);
card->configured = 0;
return;
}
/*
* Driver IOCTL Handlers
*/
static int
wan_ioctl(struct ifnet *ifp, int cmd, struct ifreq *ifr)
{
wanpipe_common_t *common = WAN_IFP_TO_COMMON(ifp);
int err;
SAN_ASSERT(common == NULL);
SAN_ASSERT(common->card == NULL);
if ((err = suser(curproc, 0)) != 0)
return err;
switch (cmd) {
case SIOC_WANPIPE_HWPROBE:
err = wan_ioctl_hwprobe(ifp, ifr->ifr_data);
break;
case SIOC_WANPIPE_DUMP:
err = wan_ioctl_dump(common->card, ifr->ifr_data);
break;
default:
err = ENOTTY;
break;
}
return err;
}
static int
wan_ioctl_hwprobe(struct ifnet *ifp, void *u_def)
{
sdla_t *card = NULL;
wanpipe_common_t *common = WAN_IFP_TO_COMMON(ifp);
wanlite_def_t def;
unsigned char *str;
int err;
SAN_ASSERT(common == NULL);
SAN_ASSERT(common->card == NULL);
card = common->card;
bzero(&def, sizeof(wanlite_def_t));
/* Get protocol type */
def.proto = common->protocol;
/* Get hardware configuration */
err = sdla_get_hwprobe(card->hw, (void**)&str);
if (err)
return EINVAL;
strlcpy(def.hwprobe, str, sizeof(def.hwprobe));
/* Get interface configuration */
if (IS_TE1(&card->fe_te.te_cfg)) {
if (IS_T1(&card->fe_te.te_cfg))
def.iface = IF_IFACE_T1;
else
def.iface = IF_IFACE_E1;
bcopy(&card->fe_te.te_cfg, &def.te_cfg, sizeof(sdla_te_cfg_t));
}
err = copyout(&def, u_def, sizeof(def));
if (err) {
log(LOG_INFO, "%s: Failed to copy to user space (%d)\n",
card->devname, __LINE__);
return ENOMEM;
}
return 0;
}
static int
wan_ioctl_dump(sdla_t *card, void *u_dump)
{
sdla_dump_t dump;
void* data;
u_int32_t memory;
int err = 0;
err = copyin(u_dump, &dump, sizeof(sdla_dump_t));
if (err)
return err;
sdla_getcfg(card->hw, SDLA_MEMORY, &memory);
if (dump.magic != WANPIPE_MAGIC)
return EINVAL;
if ((dump.offset + dump.length) > memory)
return EINVAL;
data = malloc(dump.length, M_DEVBUF, M_NOWAIT);
if (data == NULL)
return ENOMEM;
sdla_peek(card->hw, dump.offset, data, dump.length);
err = copyout(data, dump.ptr, dump.length);
if (err) {
log(LOG_INFO, "%s: Failed to copy to user space (%d)\n",
card->devname, __LINE__);
}
free(data, M_DEVBUF);
return err;
}
/*
* SDLA Interrupt Service Routine.
* o call protocol-specific interrupt service routine, if any.
*/
int
sdla_isr(void *pcard)
{
sdla_t *card = (sdla_t*)pcard;
if (card == NULL || card->magic != WANPIPE_MAGIC)
return 0;
switch (card->type) {
case SDLA_AFT:
if (card->isr)
card->isr(card);
break;
}
return (1);
}
struct mbuf*
wan_mbuf_alloc(int len)
{
struct mbuf *m;
/* XXX handle len > MCLBYTES */
if (len <= 0 || len > MCLBYTES)
return (NULL);
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL || len <= MHLEN)
return (m);
m->m_pkthdr.len = len;
m->m_len = len;
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
m_freem(m);
return (NULL);
}
return (m);
}
int
wan_mbuf_to_buffer(struct mbuf **m_org)
{
struct mbuf *m, *m0, *tmp;
char *buffer;
size_t len;
if (m_org == NULL || *m_org == NULL)
return (EINVAL);
m0 = *m_org;
#if 0
/* no need to copy if it is a single, properly aligned mbuf */
if (m0->m_next == NULL && (mtod(m0, u_int32_t) & 0x03) == 0)
return (0);
#endif
MGET(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return (ENOMEM);
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
m_freem(m);
return (ENOMEM);
}
m->m_len = 0;
/* XXX handle larger packets? */
len = MCLBYTES ;
buffer = mtod(m, caddr_t);
len -= 16;
buffer += 16;
/* make sure the buffer is aligned to a 4-byte boundary */
if (ADDR_MASK(buffer, 0x03)) {
unsigned int inc = 4 - ADDR_MASK(buffer, 0x03);
buffer += inc;
len -= inc;
}
m->m_data = buffer;
for (tmp = m0; tmp; tmp = tmp->m_next) {
if (tmp->m_len > len) {
m_freem(m);
return (EINVAL);
}
bcopy(mtod(tmp, caddr_t), buffer, tmp->m_len);
buffer += tmp->m_len;
m->m_len += tmp->m_len;
len -= tmp->m_len;
}
m_freem(m0);
*m_org = m;
return (0);
}
|