d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
84f580a093
freebsd-nq/sys/compat/ndis/kern_ndis.c
Bill Paul 303ff38659 Don't need to do MmInitializeMdl() in ndis_mtop() anymore: 
IoInitializeMdl() does it internally (and doing it again here
messes things up).
2005-02-26 07:11:17 +00:00

1689 lines
36 KiB
C
Raw Blame History

/*-
* Copyright (c) 2003
* Bill Paul <wpaul@windriver.com>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
* 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/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/unistd.h>
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/callout.h>
#include <sys/socket.h>
#include <sys/queue.h>
#include <sys/sysctl.h>
#include <sys/proc.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/kthread.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_ioctl.h>
#include <compat/ndis/pe_var.h>
#include <compat/ndis/resource_var.h>
#include <compat/ndis/ntoskrnl_var.h>
#include <compat/ndis/ndis_var.h>
#include <compat/ndis/hal_var.h>
#include <compat/ndis/cfg_var.h>
#include <compat/ndis/usbd_var.h>
#include <dev/if_ndis/if_ndisvar.h>
#define NDIS_DUMMY_PATH "\\\\some\\bogus\\path"
__stdcall static void ndis_status_func(ndis_handle, ndis_status,
void *, uint32_t);
__stdcall static void ndis_statusdone_func(ndis_handle);
__stdcall static void ndis_setdone_func(ndis_handle, ndis_status);
__stdcall static void ndis_getdone_func(ndis_handle, ndis_status);
__stdcall static void ndis_resetdone_func(ndis_handle, ndis_status, uint8_t);
__stdcall static void ndis_sendrsrcavail_func(ndis_handle);
static image_patch_table kernndis_functbl[] = {
IMPORT_FUNC(ndis_status_func),
IMPORT_FUNC(ndis_statusdone_func),
IMPORT_FUNC(ndis_setdone_func),
IMPORT_FUNC(ndis_getdone_func),
IMPORT_FUNC(ndis_resetdone_func),
IMPORT_FUNC(ndis_sendrsrcavail_func),
{ NULL, NULL, NULL }
};
struct nd_head ndis_devhead;
struct ndis_req {
void (*nr_func)(void *);
void *nr_arg;
int nr_exit;
STAILQ_ENTRY(ndis_req) link;
};
struct ndisproc {
struct ndisqhead *np_q;
struct proc *np_p;
int np_state;
};
static void ndis_return(void *);
static int ndis_create_kthreads(void);
static void ndis_destroy_kthreads(void);
static void ndis_stop_thread(int);
static int ndis_enlarge_thrqueue(int);
static int ndis_shrink_thrqueue(int);
static void ndis_runq(void *);
struct mtx ndis_thr_mtx;
struct mtx ndis_req_mtx;
static STAILQ_HEAD(ndisqhead, ndis_req) ndis_ttodo;
static struct ndisqhead ndis_itodo;
static struct ndisqhead ndis_free;
static int ndis_jobs = 32;
static struct ndisproc ndis_tproc;
static struct ndisproc ndis_iproc;
/*
* This allows us to export our symbols to other modules.
* Note that we call ourselves 'ndisapi' to avoid a namespace
* collision with if_ndis.ko, which internally calls itself
* 'ndis.'
*/
static int
ndis_modevent(module_t mod, int cmd, void *arg)
{
int error = 0;
image_patch_table *patch;
switch (cmd) {
case MOD_LOAD:
/* Initialize subsystems */
windrv_libinit();
hal_libinit();
ndis_libinit();
ntoskrnl_libinit();
usbd_libinit();
patch = kernndis_functbl;
while (patch->ipt_func != NULL) {
windrv_wrap((funcptr)patch->ipt_func,
(funcptr *)&patch->ipt_wrap);
patch++;
}
ndis_create_kthreads();
TAILQ_INIT(&ndis_devhead);
break;
case MOD_SHUTDOWN:
/* stop kthreads */
ndis_destroy_kthreads();
if (TAILQ_FIRST(&ndis_devhead) == NULL) {
/* Shut down subsystems */
hal_libfini();
ndis_libfini();
ntoskrnl_libfini();
usbd_libfini();
windrv_libfini();
patch = kernndis_functbl;
while (patch->ipt_func != NULL) {
windrv_unwrap(patch->ipt_wrap);
patch++;
}
}
break;
case MOD_UNLOAD:
/* stop kthreads */
ndis_destroy_kthreads();
/* Shut down subsystems */
hal_libfini();
ndis_libfini();
ntoskrnl_libfini();
usbd_libfini();
windrv_libfini();
patch = kernndis_functbl;
while (patch->ipt_func != NULL) {
windrv_unwrap(patch->ipt_wrap);
patch++;
}
break;
default:
error = EINVAL;
break;
}
return(error);
}
DEV_MODULE(ndisapi, ndis_modevent, NULL);
MODULE_VERSION(ndisapi, 1);
/*
* We create two kthreads for the NDIS subsystem. One of them is a task
* queue for performing various odd jobs. The other is an swi thread
* reserved exclusively for running interrupt handlers. The reason we
* have our own task queue is that there are some cases where we may
* need to sleep for a significant amount of time, and if we were to
* use one of the taskqueue threads, we might delay the processing
* of other pending tasks which might need to run right away. We have
* a separate swi thread because we don't want our interrupt handling
* to be delayed either.
*
* By default there are 32 jobs available to start, and another 8
* are added to the free list each time a new device is created.
*/
static void
ndis_runq(arg)
void *arg;
{
struct ndis_req *r = NULL, *die = NULL;
struct ndisproc *p;
p = arg;
while (1) {
/* Sleep, but preserve our original priority. */
ndis_thsuspend(p->np_p, 0);
/* Look for any jobs on the work queue. */
mtx_lock(&ndis_thr_mtx);
p->np_state = NDIS_PSTATE_RUNNING;
while(STAILQ_FIRST(p->np_q) != NULL) {
r = STAILQ_FIRST(p->np_q);
STAILQ_REMOVE_HEAD(p->np_q, link);
mtx_unlock(&ndis_thr_mtx);
/* Do the work. */
if (r->nr_func != NULL)
(*r->nr_func)(r->nr_arg);
mtx_lock(&ndis_thr_mtx);
STAILQ_INSERT_HEAD(&ndis_free, r, link);
/* Check for a shutdown request */
if (r->nr_exit == TRUE)
die = r;
}
p->np_state = NDIS_PSTATE_SLEEPING;
mtx_unlock(&ndis_thr_mtx);
/* Bail if we were told to shut down. */
if (die != NULL)
break;
}
wakeup(die);
#if __FreeBSD_version < 502113
mtx_lock(&Giant);
#endif
kthread_exit(0);
return; /* notreached */
}
static int
ndis_create_kthreads()
{
struct ndis_req *r;
int i, error = 0;
mtx_init(&ndis_thr_mtx, "NDIS thread lock",
MTX_NDIS_LOCK, MTX_DEF);
mtx_init(&ndis_req_mtx, "NDIS request lock",
MTX_NDIS_LOCK, MTX_DEF);
STAILQ_INIT(&ndis_ttodo);
STAILQ_INIT(&ndis_itodo);
STAILQ_INIT(&ndis_free);
for (i = 0; i < ndis_jobs; i++) {
r = malloc(sizeof(struct ndis_req), M_DEVBUF, M_WAITOK);
if (r == NULL) {
error = ENOMEM;
break;
}
STAILQ_INSERT_HEAD(&ndis_free, r, link);
}
if (error == 0) {
ndis_tproc.np_q = &ndis_ttodo;
ndis_tproc.np_state = NDIS_PSTATE_SLEEPING;
error = kthread_create(ndis_runq, &ndis_tproc,
&ndis_tproc.np_p, RFHIGHPID,
NDIS_KSTACK_PAGES, "ndis taskqueue");
}
if (error == 0) {
ndis_iproc.np_q = &ndis_itodo;
ndis_iproc.np_state = NDIS_PSTATE_SLEEPING;
error = kthread_create(ndis_runq, &ndis_iproc,
&ndis_iproc.np_p, RFHIGHPID,
NDIS_KSTACK_PAGES, "ndis swi");
}
if (error) {
while ((r = STAILQ_FIRST(&ndis_free)) != NULL) {
STAILQ_REMOVE_HEAD(&ndis_free, link);
free(r, M_DEVBUF);
}
return(error);
}
return(0);
}
static void
ndis_destroy_kthreads()
{
struct ndis_req *r;
/* Stop the threads. */
ndis_stop_thread(NDIS_TASKQUEUE);
ndis_stop_thread(NDIS_SWI);
/* Destroy request structures. */
while ((r = STAILQ_FIRST(&ndis_free)) != NULL) {
STAILQ_REMOVE_HEAD(&ndis_free, link);
free(r, M_DEVBUF);
}
mtx_destroy(&ndis_req_mtx);
mtx_destroy(&ndis_thr_mtx);
return;
}
static void
ndis_stop_thread(t)
int t;
{
struct ndis_req *r;
struct ndisqhead *q;
struct proc *p;
if (t == NDIS_TASKQUEUE) {
q = &ndis_ttodo;
p = ndis_tproc.np_p;
} else {
q = &ndis_itodo;
p = ndis_iproc.np_p;
}
/* Create and post a special 'exit' job. */
mtx_lock(&ndis_thr_mtx);
r = STAILQ_FIRST(&ndis_free);
STAILQ_REMOVE_HEAD(&ndis_free, link);
r->nr_func = NULL;
r->nr_arg = NULL;
r->nr_exit = TRUE;
STAILQ_INSERT_TAIL(q, r, link);
mtx_unlock(&ndis_thr_mtx);
ndis_thresume(p);
/* wait for thread exit */
tsleep(r, curthread->td_priority|PCATCH, "ndisthexit", hz * 60);
/* Now empty the job list. */
mtx_lock(&ndis_thr_mtx);
while ((r = STAILQ_FIRST(q)) != NULL) {
STAILQ_REMOVE_HEAD(q, link);
STAILQ_INSERT_HEAD(&ndis_free, r, link);
}
mtx_unlock(&ndis_thr_mtx);
return;
}
static int
ndis_enlarge_thrqueue(cnt)
int cnt;
{
struct ndis_req *r;
int i;
for (i = 0; i < cnt; i++) {
r = malloc(sizeof(struct ndis_req), M_DEVBUF, M_WAITOK);
if (r == NULL)
return(ENOMEM);
mtx_lock(&ndis_thr_mtx);
STAILQ_INSERT_HEAD(&ndis_free, r, link);
ndis_jobs++;
mtx_unlock(&ndis_thr_mtx);
}
return(0);
}
static int
ndis_shrink_thrqueue(cnt)
int cnt;
{
struct ndis_req *r;
int i;
for (i = 0; i < cnt; i++) {
mtx_lock(&ndis_thr_mtx);
r = STAILQ_FIRST(&ndis_free);
if (r == NULL) {
mtx_unlock(&ndis_thr_mtx);
return(ENOMEM);
}
STAILQ_REMOVE_HEAD(&ndis_free, link);
ndis_jobs--;
mtx_unlock(&ndis_thr_mtx);
free(r, M_DEVBUF);
}
return(0);
}
int
ndis_unsched(func, arg, t)
void (*func)(void *);
void *arg;
int t;
{
struct ndis_req *r;
struct ndisqhead *q;
struct proc *p;
if (t == NDIS_TASKQUEUE) {
q = &ndis_ttodo;
p = ndis_tproc.np_p;
} else {
q = &ndis_itodo;
p = ndis_iproc.np_p;
}
mtx_lock(&ndis_thr_mtx);
STAILQ_FOREACH(r, q, link) {
if (r->nr_func == func && r->nr_arg == arg) {
STAILQ_REMOVE(q, r, ndis_req, link);
STAILQ_INSERT_HEAD(&ndis_free, r, link);
mtx_unlock(&ndis_thr_mtx);
return(0);
}
}
mtx_unlock(&ndis_thr_mtx);
return(ENOENT);
}
int
ndis_sched(func, arg, t)
void (*func)(void *);
void *arg;
int t;
{
struct ndis_req *r;
struct ndisqhead *q;
struct proc *p;
int s;
if (t == NDIS_TASKQUEUE) {
q = &ndis_ttodo;
p = ndis_tproc.np_p;
} else {
q = &ndis_itodo;
p = ndis_iproc.np_p;
}
mtx_lock(&ndis_thr_mtx);
/*
* Check to see if an instance of this job is already
* pending. If so, don't bother queuing it again.
*/
STAILQ_FOREACH(r, q, link) {
if (r->nr_func == func && r->nr_arg == arg) {
mtx_unlock(&ndis_thr_mtx);
return(0);
}
}
r = STAILQ_FIRST(&ndis_free);
if (r == NULL) {
mtx_unlock(&ndis_thr_mtx);
return(EAGAIN);
}
STAILQ_REMOVE_HEAD(&ndis_free, link);
r->nr_func = func;
r->nr_arg = arg;
r->nr_exit = FALSE;
STAILQ_INSERT_TAIL(q, r, link);
if (t == NDIS_TASKQUEUE)
s = ndis_tproc.np_state;
else
s = ndis_iproc.np_state;
mtx_unlock(&ndis_thr_mtx);
/*
* Post the job, but only if the thread is actually blocked
* on its own suspend call. If a driver queues up a job with
* NdisScheduleWorkItem() which happens to do a KeWaitForObject(),
* it may suspend there, and in that case we don't want to wake
* it up until KeWaitForObject() gets woken up on its own.
*/
if (s == NDIS_PSTATE_SLEEPING)
ndis_thresume(p);
return(0);
}
int
ndis_thsuspend(p, timo)
struct proc *p;
int timo;
{
int error;
PROC_LOCK(p);
error = msleep(&p->p_siglist, &p->p_mtx,
curthread->td_priority|PDROP, "ndissp", timo);
return(error);
}
void
ndis_thresume(p)
struct proc *p;
{
wakeup(&p->p_siglist);
return;
}
__stdcall static void
ndis_sendrsrcavail_func(adapter)
ndis_handle adapter;
{
return;
}
__stdcall static void
ndis_status_func(adapter, status, sbuf, slen)
ndis_handle adapter;
ndis_status status;
void *sbuf;
uint32_t slen;
{
ndis_miniport_block *block;
struct ndis_softc *sc;
struct ifnet *ifp;
block = adapter;
sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
ifp = &sc->arpcom.ac_if;
if (ifp->if_flags & IFF_DEBUG)
device_printf (sc->ndis_dev, "status: %x\n", status);
return;
}
__stdcall static void
ndis_statusdone_func(adapter)
ndis_handle adapter;
{
ndis_miniport_block *block;
struct ndis_softc *sc;
struct ifnet *ifp;
block = adapter;
sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
ifp = &sc->arpcom.ac_if;
if (ifp->if_flags & IFF_DEBUG)
device_printf (sc->ndis_dev, "status complete\n");
return;
}
__stdcall static void
ndis_setdone_func(adapter, status)
ndis_handle adapter;
ndis_status status;
{
ndis_miniport_block *block;
block = adapter;
block->nmb_setstat = status;
wakeup(&block->nmb_setstat);
return;
}
__stdcall static void
ndis_getdone_func(adapter, status)
ndis_handle adapter;
ndis_status status;
{
ndis_miniport_block *block;
block = adapter;
block->nmb_getstat = status;
wakeup(&block->nmb_getstat);
return;
}
__stdcall static void
ndis_resetdone_func(adapter, status, addressingreset)
ndis_handle adapter;
ndis_status status;
uint8_t addressingreset;
{
ndis_miniport_block *block;
struct ndis_softc *sc;
struct ifnet *ifp;
block = adapter;
sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
ifp = &sc->arpcom.ac_if;
if (ifp->if_flags & IFF_DEBUG)
device_printf (sc->ndis_dev, "reset done...\n");
wakeup(ifp);
return;
}
int
ndis_create_sysctls(arg)
void *arg;
{
struct ndis_softc *sc;
ndis_cfg *vals;
char buf[256];
struct sysctl_oid *oidp;
struct sysctl_ctx_entry *e;
if (arg == NULL)
return(EINVAL);
sc = arg;
vals = sc->ndis_regvals;
TAILQ_INIT(&sc->ndis_cfglist_head);
#if __FreeBSD_version < 502113
/* Create the sysctl tree. */
sc->ndis_tree = SYSCTL_ADD_NODE(&sc->ndis_ctx,
SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
device_get_nameunit(sc->ndis_dev), CTLFLAG_RD, 0,
device_get_desc(sc->ndis_dev));
#endif
/* Add the driver-specific registry keys. */
vals = sc->ndis_regvals;
while(1) {
if (vals->nc_cfgkey == NULL)
break;
if (vals->nc_idx != sc->ndis_devidx) {
vals++;
continue;
}
/* See if we already have a sysctl with this name */
oidp = NULL;
#if __FreeBSD_version < 502113
TAILQ_FOREACH(e, &sc->ndis_ctx, link) {
#else
TAILQ_FOREACH(e, device_get_sysctl_ctx(sc->ndis_dev), link) {
#endif
oidp = e->entry;
if (ndis_strcasecmp(oidp->oid_name,
vals->nc_cfgkey) == 0)
break;
oidp = NULL;
}
if (oidp != NULL) {
vals++;
continue;
}
#if __FreeBSD_version < 502113
SYSCTL_ADD_STRING(&sc->ndis_ctx,
SYSCTL_CHILDREN(sc->ndis_tree),
#else
SYSCTL_ADD_STRING(device_get_sysctl_ctx(sc->ndis_dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(sc->ndis_dev)),
#endif
OID_AUTO, vals->nc_cfgkey,
CTLFLAG_RW, vals->nc_val,
sizeof(vals->nc_val),
vals->nc_cfgdesc);
vals++;
}
/* Now add a couple of builtin keys. */
/*
* Environment can be either Windows (0) or WindowsNT (1).
* We qualify as the latter.
*/
ndis_add_sysctl(sc, "Environment",
"Windows environment", "1", CTLFLAG_RD);
/* NDIS version should be 5.1. */
ndis_add_sysctl(sc, "NdisVersion",
"NDIS API Version", "0x00050001", CTLFLAG_RD);
/* Bus type (PCI, PCMCIA, etc...) */
sprintf(buf, "%d", (int)sc->ndis_iftype);
ndis_add_sysctl(sc, "BusType", "Bus Type", buf, CTLFLAG_RD);
if (sc->ndis_res_io != NULL) {
sprintf(buf, "0x%lx", rman_get_start(sc->ndis_res_io));
ndis_add_sysctl(sc, "IOBaseAddress",
"Base I/O Address", buf, CTLFLAG_RD);
}
if (sc->ndis_irq != NULL) {
sprintf(buf, "%lu", rman_get_start(sc->ndis_irq));
ndis_add_sysctl(sc, "InterruptNumber",
"Interrupt Number", buf, CTLFLAG_RD);
}
return(0);
}
int
ndis_add_sysctl(arg, key, desc, val, flag)
void *arg;
char *key;
char *desc;
char *val;
int flag;
{
struct ndis_softc *sc;
struct ndis_cfglist *cfg;
char descstr[256];
sc = arg;
cfg = malloc(sizeof(struct ndis_cfglist), M_DEVBUF, M_NOWAIT|M_ZERO);
if (cfg == NULL)
return(ENOMEM);
cfg->ndis_cfg.nc_cfgkey = strdup(key, M_DEVBUF);
if (desc == NULL) {
snprintf(descstr, sizeof(descstr), "%s (dynamic)", key);
cfg->ndis_cfg.nc_cfgdesc = strdup(descstr, M_DEVBUF);
} else
cfg->ndis_cfg.nc_cfgdesc = strdup(desc, M_DEVBUF);
strcpy(cfg->ndis_cfg.nc_val, val);
TAILQ_INSERT_TAIL(&sc->ndis_cfglist_head, cfg, link);
#if __FreeBSD_version < 502113
SYSCTL_ADD_STRING(&sc->ndis_ctx, SYSCTL_CHILDREN(sc->ndis_tree),
#else
SYSCTL_ADD_STRING(device_get_sysctl_ctx(sc->ndis_dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(sc->ndis_dev)),
#endif
OID_AUTO, cfg->ndis_cfg.nc_cfgkey, flag,
cfg->ndis_cfg.nc_val, sizeof(cfg->ndis_cfg.nc_val),
cfg->ndis_cfg.nc_cfgdesc);
return(0);
}
int
ndis_flush_sysctls(arg)
void *arg;
{
struct ndis_softc *sc;
struct ndis_cfglist *cfg;
sc = arg;
while (!TAILQ_EMPTY(&sc->ndis_cfglist_head)) {
cfg = TAILQ_FIRST(&sc->ndis_cfglist_head);
TAILQ_REMOVE(&sc->ndis_cfglist_head, cfg, link);
free(cfg->ndis_cfg.nc_cfgkey, M_DEVBUF);
free(cfg->ndis_cfg.nc_cfgdesc, M_DEVBUF);
free(cfg, M_DEVBUF);
}
return(0);
}
static void
ndis_return(arg)
void *arg;
{
struct ndis_softc *sc;
__stdcall ndis_return_handler returnfunc;
ndis_handle adapter;
ndis_packet *p;
uint8_t irql;
p = arg;
sc = p->np_softc;
adapter = sc->ndis_block->nmb_miniportadapterctx;
if (adapter == NULL)
return;
returnfunc = sc->ndis_chars->nmc_return_packet_func;
irql = KeRaiseIrql(DISPATCH_LEVEL);
MSCALL2(returnfunc, adapter, p);
KeLowerIrql(irql);
return;
}
void
ndis_return_packet(buf, arg)
void *buf; /* not used */
void *arg;
{
ndis_packet *p;
if (arg == NULL)
return;
p = arg;
/* Decrement refcount. */
p->np_refcnt--;
/* Release packet when refcount hits zero, otherwise return. */
if (p->np_refcnt)
return;
ndis_sched(ndis_return, p, NDIS_SWI);
return;
}
void
ndis_free_bufs(b0)
ndis_buffer *b0;
{
ndis_buffer *next;
if (b0 == NULL)
return;
while(b0 != NULL) {
next = b0->mdl_next;
IoFreeMdl(b0);
b0 = next;
}
return;
}
void
ndis_free_packet(p)
ndis_packet *p;
{
if (p == NULL)
return;
ndis_free_bufs(p->np_private.npp_head);
NdisFreePacket(p);
return;
}
int
ndis_convert_res(arg)
void *arg;
{
struct ndis_softc *sc;
ndis_resource_list *rl = NULL;
cm_partial_resource_desc *prd = NULL;
ndis_miniport_block *block;
device_t dev;
struct resource_list *brl;
struct resource_list brl_rev;
struct resource_list_entry *brle, *n;
int error = 0;
sc = arg;
block = sc->ndis_block;
dev = sc->ndis_dev;
SLIST_INIT(&brl_rev);
rl = malloc(sizeof(ndis_resource_list) +
(sizeof(cm_partial_resource_desc) * (sc->ndis_rescnt - 1)),
M_DEVBUF, M_NOWAIT|M_ZERO);
if (rl == NULL)
return(ENOMEM);
rl->cprl_version = 5;
rl->cprl_version = 1;
rl->cprl_count = sc->ndis_rescnt;
prd = rl->cprl_partial_descs;
brl = BUS_GET_RESOURCE_LIST(dev, dev);
if (brl != NULL) {
/*
* We have a small problem. Some PCI devices have
* multiple I/O ranges. Windows orders them starting
* from lowest numbered BAR to highest. We discover
* them in that order too, but insert them into a singly
* linked list head first, which means when time comes
* to traverse the list, we enumerate them in reverse
* order. This screws up some drivers which expect the
* BARs to be in ascending order so that they can choose
* the "first" one as their register space. Unfortunately,
* in order to fix this, we have to create our own
* temporary list with the entries in reverse order.
*/
SLIST_FOREACH(brle, brl, link) {
n = malloc(sizeof(struct resource_list_entry),
M_TEMP, M_NOWAIT);
if (n == NULL) {
error = ENOMEM;
goto bad;
}
bcopy((char *)brle, (char *)n,
sizeof(struct resource_list_entry));
SLIST_INSERT_HEAD(&brl_rev, n, link);
}
SLIST_FOREACH(brle, &brl_rev, link) {
switch (brle->type) {
case SYS_RES_IOPORT:
prd->cprd_type = CmResourceTypePort;
prd->cprd_flags = CM_RESOURCE_PORT_IO;
prd->cprd_sharedisp =
CmResourceShareDeviceExclusive;
prd->u.cprd_port.cprd_start.np_quad =
brle->start;
prd->u.cprd_port.cprd_len = brle->count;
break;
case SYS_RES_MEMORY:
prd->cprd_type = CmResourceTypeMemory;
prd->cprd_flags =
CM_RESOURCE_MEMORY_READ_WRITE;
prd->cprd_sharedisp =
CmResourceShareDeviceExclusive;
prd->u.cprd_port.cprd_start.np_quad =
brle->start;
prd->u.cprd_port.cprd_len = brle->count;
break;
case SYS_RES_IRQ:
prd->cprd_type = CmResourceTypeInterrupt;
prd->cprd_flags = 0;
prd->cprd_sharedisp =
CmResourceShareDeviceExclusive;
prd->u.cprd_intr.cprd_level = brle->start;
prd->u.cprd_intr.cprd_vector = brle->start;
prd->u.cprd_intr.cprd_affinity = 0;
break;
default:
break;
}
prd++;
}
}
block->nmb_rlist = rl;
bad:
while (!SLIST_EMPTY(&brl_rev)) {
n = SLIST_FIRST(&brl_rev);
SLIST_REMOVE_HEAD(&brl_rev, link);
free (n, M_TEMP);
}
return(error);
}
/*
* Map an NDIS packet to an mbuf list. When an NDIS driver receives a
* packet, it will hand it to us in the form of an ndis_packet,
* which we need to convert to an mbuf that is then handed off
* to the stack. Note: we configure the mbuf list so that it uses
* the memory regions specified by the ndis_buffer structures in
* the ndis_packet as external storage. In most cases, this will
* point to a memory region allocated by the driver (either by
* ndis_malloc_withtag() or ndis_alloc_sharedmem()). We expect
* the driver to handle free()ing this region for is, so we set up
* a dummy no-op free handler for it.
*/
int
ndis_ptom(m0, p)
struct mbuf **m0;
ndis_packet *p;
{
struct mbuf *m, *prev = NULL;
ndis_buffer *buf;
ndis_packet_private *priv;
uint32_t totlen = 0;
if (p == NULL || m0 == NULL)
return(EINVAL);
priv = &p->np_private;
buf = priv->npp_head;
p->np_refcnt = 0;
for (buf = priv->npp_head; buf != NULL; buf = buf->mdl_next) {
if (buf == priv->npp_head)
MGETHDR(m, M_DONTWAIT, MT_HEADER);
else
MGET(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
m_freem(*m0);
*m0 = NULL;
return(ENOBUFS);
}
m->m_len = MmGetMdlByteCount(buf);
m->m_data = MmGetMdlVirtualAddress(buf);
MEXTADD(m, m->m_data, m->m_len, ndis_return_packet,
p, 0, EXT_NDIS);
p->np_refcnt++;
totlen += m->m_len;
if (m->m_flags & MT_HEADER)
*m0 = m;
else
prev->m_next = m;
prev = m;
}
(*m0)->m_pkthdr.len = totlen;
return(0);
}
/*
* Create an mbuf chain from an NDIS packet chain.
* This is used mainly when transmitting packets, where we need
* to turn an mbuf off an interface's send queue and transform it
* into an NDIS packet which will be fed into the NDIS driver's
* send routine.
*
* NDIS packets consist of two parts: an ndis_packet structure,
* which is vaguely analagous to the pkthdr portion of an mbuf,
* and one or more ndis_buffer structures, which define the
* actual memory segments in which the packet data resides.
* We need to allocate one ndis_buffer for each mbuf in a chain,
* plus one ndis_packet as the header.
*/
int
ndis_mtop(m0, p)
struct mbuf *m0;
ndis_packet **p;
{
struct mbuf *m;
ndis_buffer *buf = NULL, *prev = NULL;
ndis_packet_private *priv;
if (p == NULL || *p == NULL || m0 == NULL)
return(EINVAL);
priv = &(*p)->np_private;
priv->npp_totlen = m0->m_pkthdr.len;
for (m = m0; m != NULL; m = m->m_next) {
if (m->m_len == 0)
continue;
buf = IoAllocateMdl(m->m_data, m->m_len, FALSE, FALSE, NULL);
if (buf == NULL) {
ndis_free_packet(*p);
*p = NULL;
return(ENOMEM);
}
if (priv->npp_head == NULL)
priv->npp_head = buf;
else
prev->mdl_next = buf;
prev = buf;
}
priv->npp_tail = buf;
priv->npp_totlen = m0->m_pkthdr.len;
return(0);
}
int
ndis_get_supported_oids(arg, oids, oidcnt)
void *arg;
ndis_oid **oids;
int *oidcnt;
{
int len, rval;
ndis_oid *o;
if (arg == NULL || oids == NULL || oidcnt == NULL)
return(EINVAL);
len = 0;
ndis_get_info(arg, OID_GEN_SUPPORTED_LIST, NULL, &len);
o = malloc(len, M_DEVBUF, M_NOWAIT);
if (o == NULL)
return(ENOMEM);
rval = ndis_get_info(arg, OID_GEN_SUPPORTED_LIST, o, &len);
if (rval) {
free(o, M_DEVBUF);
return(rval);
}
*oids = o;
*oidcnt = len / 4;
return(0);
}
int
ndis_set_info(arg, oid, buf, buflen)
void *arg;
ndis_oid oid;
void *buf;
int *buflen;
{
struct ndis_softc *sc;
ndis_status rval;
ndis_handle adapter;
__stdcall ndis_setinfo_handler setfunc;
uint32_t byteswritten = 0, bytesneeded = 0;
int error;
uint8_t irql;
sc = arg;
NDIS_LOCK(sc);
setfunc = sc->ndis_chars->nmc_setinfo_func;
adapter = sc->ndis_block->nmb_miniportadapterctx;
NDIS_UNLOCK(sc);
if (adapter == NULL || setfunc == NULL)
return(ENXIO);
KeAcquireSpinLock(&sc->ndis_block->nmb_lock, &irql);
rval = MSCALL6(setfunc, adapter, oid, buf, *buflen,
&byteswritten, &bytesneeded);
KeReleaseSpinLock(&sc->ndis_block->nmb_lock, irql);
if (rval == NDIS_STATUS_PENDING) {
mtx_lock(&ndis_req_mtx);
error = msleep(&sc->ndis_block->nmb_setstat,
&ndis_req_mtx,
curthread->td_priority|PDROP,
"ndisset", 5 * hz);
rval = sc->ndis_block->nmb_setstat;
}
if (byteswritten)
*buflen = byteswritten;
if (bytesneeded)
*buflen = bytesneeded;
if (rval == NDIS_STATUS_INVALID_LENGTH)
return(ENOSPC);
if (rval == NDIS_STATUS_INVALID_OID)
return(EINVAL);
if (rval == NDIS_STATUS_NOT_SUPPORTED ||
rval == NDIS_STATUS_NOT_ACCEPTED)
return(ENOTSUP);
if (rval != NDIS_STATUS_SUCCESS)
return(ENODEV);
return(0);
}
typedef void (*ndis_senddone_func)(ndis_handle, ndis_packet *, ndis_status);
int
ndis_send_packets(arg, packets, cnt)
void *arg;
ndis_packet **packets;
int cnt;
{
struct ndis_softc *sc;
ndis_handle adapter;
__stdcall ndis_sendmulti_handler sendfunc;
__stdcall ndis_senddone_func senddonefunc;
int i;
ndis_packet *p;
uint8_t irql;
sc = arg;
adapter = sc->ndis_block->nmb_miniportadapterctx;
if (adapter == NULL)
return(ENXIO);
sendfunc = sc->ndis_chars->nmc_sendmulti_func;
senddonefunc = sc->ndis_block->nmb_senddone_func;
irql = KeRaiseIrql(DISPATCH_LEVEL);
MSCALL3(sendfunc, adapter, packets, cnt);
KeLowerIrql(irql);
for (i = 0; i < cnt; i++) {
p = packets[i];
/*
* Either the driver already handed the packet to
* ndis_txeof() due to a failure, or it wants to keep
* it and release it asynchronously later. Skip to the
* next one.
*/
if (p == NULL || p->np_oob.npo_status == NDIS_STATUS_PENDING)
continue;
MSCALL3(senddonefunc, sc->ndis_block, p, p->np_oob.npo_status);
}
return(0);
}
int
ndis_send_packet(arg, packet)
void *arg;
ndis_packet *packet;
{
struct ndis_softc *sc;
ndis_handle adapter;
ndis_status status;
__stdcall ndis_sendsingle_handler sendfunc;
__stdcall ndis_senddone_func senddonefunc;
uint8_t irql;
sc = arg;
adapter = sc->ndis_block->nmb_miniportadapterctx;
if (adapter == NULL)
return(ENXIO);
sendfunc = sc->ndis_chars->nmc_sendsingle_func;
senddonefunc = sc->ndis_block->nmb_senddone_func;
irql = KeRaiseIrql(DISPATCH_LEVEL);
status = MSCALL3(sendfunc, adapter, packet,
packet->np_private.npp_flags);
KeLowerIrql(irql);
if (status == NDIS_STATUS_PENDING)
return(0);
MSCALL3(senddonefunc, sc->ndis_block, packet, status);
return(0);
}
int
ndis_init_dma(arg)
void *arg;
{
struct ndis_softc *sc;
int i, error;
sc = arg;
sc->ndis_tmaps = malloc(sizeof(bus_dmamap_t) * sc->ndis_maxpkts,
M_DEVBUF, M_NOWAIT|M_ZERO);
if (sc->ndis_tmaps == NULL)
return(ENOMEM);
for (i = 0; i < sc->ndis_maxpkts; i++) {
error = bus_dmamap_create(sc->ndis_ttag, 0,
&sc->ndis_tmaps[i]);
if (error) {
free(sc->ndis_tmaps, M_DEVBUF);
return(ENODEV);
}
}
return(0);
}
int
ndis_destroy_dma(arg)
void *arg;
{
struct ndis_softc *sc;
struct mbuf *m;
ndis_packet *p = NULL;
int i;
sc = arg;
for (i = 0; i < sc->ndis_maxpkts; i++) {
if (sc->ndis_txarray[i] != NULL) {
p = sc->ndis_txarray[i];
m = (struct mbuf *)p->np_rsvd[1];
if (m != NULL)
m_freem(m);
ndis_free_packet(sc->ndis_txarray[i]);
}
bus_dmamap_destroy(sc->ndis_ttag, sc->ndis_tmaps[i]);
}
free(sc->ndis_tmaps, M_DEVBUF);
bus_dma_tag_destroy(sc->ndis_ttag);
return(0);
}
int
ndis_reset_nic(arg)
void *arg;
{
struct ndis_softc *sc;
ndis_handle adapter;
__stdcall ndis_reset_handler resetfunc;
uint8_t addressing_reset;
struct ifnet *ifp;
int rval;
uint8_t irql;
sc = arg;
ifp = &sc->arpcom.ac_if;
NDIS_LOCK(sc);
adapter = sc->ndis_block->nmb_miniportadapterctx;
resetfunc = sc->ndis_chars->nmc_reset_func;
NDIS_UNLOCK(sc);
if (adapter == NULL || resetfunc == NULL)
return(EIO);
irql = KeRaiseIrql(DISPATCH_LEVEL);
rval = MSCALL2(resetfunc, &addressing_reset, adapter);
KeLowerIrql(irql);
if (rval == NDIS_STATUS_PENDING) {
mtx_lock(&ndis_req_mtx);
msleep(sc, &ndis_req_mtx,
curthread->td_priority|PDROP, "ndisrst", 0);
}
return(0);
}
int
ndis_halt_nic(arg)
void *arg;
{
struct ndis_softc *sc;
ndis_handle adapter;
__stdcall ndis_halt_handler haltfunc;
struct ifnet *ifp;
sc = arg;
ifp = &sc->arpcom.ac_if;
NDIS_LOCK(sc);
adapter = sc->ndis_block->nmb_miniportadapterctx;
if (adapter == NULL) {
NDIS_UNLOCK(sc);
return(EIO);
}
/*
* The adapter context is only valid after the init
* handler has been called, and is invalid once the
* halt handler has been called.
*/
haltfunc = sc->ndis_chars->nmc_halt_func;
NDIS_UNLOCK(sc);
MSCALL1(haltfunc, adapter);
NDIS_LOCK(sc);
sc->ndis_block->nmb_miniportadapterctx = NULL;
NDIS_UNLOCK(sc);
return(0);
}
int
ndis_shutdown_nic(arg)
void *arg;
{
struct ndis_softc *sc;
ndis_handle adapter;
__stdcall ndis_shutdown_handler shutdownfunc;
sc = arg;
NDIS_LOCK(sc);
adapter = sc->ndis_block->nmb_miniportadapterctx;
shutdownfunc = sc->ndis_chars->nmc_shutdown_handler;
NDIS_UNLOCK(sc);
if (adapter == NULL || shutdownfunc == NULL)
return(EIO);
if (sc->ndis_chars->nmc_rsvd0 == NULL)
MSCALL1(shutdownfunc, adapter);
else
MSCALL1(shutdownfunc, sc->ndis_chars->nmc_rsvd0);
ndis_shrink_thrqueue(8);
TAILQ_REMOVE(&ndis_devhead, sc->ndis_block, link);
return(0);
}
int
ndis_init_nic(arg)
void *arg;
{
struct ndis_softc *sc;
ndis_miniport_block *block;
__stdcall ndis_init_handler initfunc;
ndis_status status, openstatus = 0;
ndis_medium mediumarray[NdisMediumMax];
uint32_t chosenmedium, i;
if (arg == NULL)
return(EINVAL);
sc = arg;
NDIS_LOCK(sc);
block = sc->ndis_block;
initfunc = sc->ndis_chars->nmc_init_func;
NDIS_UNLOCK(sc);
for (i = 0; i < NdisMediumMax; i++)
mediumarray[i] = i;
status = MSCALL6(initfunc, &openstatus, &chosenmedium,
mediumarray, NdisMediumMax, block, block);
/*
* If the init fails, blow away the other exported routines
* we obtained from the driver so we can't call them later.
* If the init failed, none of these will work.
*/
if (status != NDIS_STATUS_SUCCESS) {
NDIS_LOCK(sc);
sc->ndis_block->nmb_miniportadapterctx = NULL;
NDIS_UNLOCK(sc);
return(ENXIO);
}
return(0);
}
void
ndis_enable_intr(arg)
void *arg;
{
struct ndis_softc *sc;
ndis_handle adapter;
__stdcall ndis_enable_interrupts_handler intrenbfunc;
sc = arg;
adapter = sc->ndis_block->nmb_miniportadapterctx;
intrenbfunc = sc->ndis_chars->nmc_enable_interrupts_func;
if (adapter == NULL || intrenbfunc == NULL)
return;
MSCALL1(intrenbfunc, adapter);
return;
}
void
ndis_disable_intr(arg)
void *arg;
{
struct ndis_softc *sc;
ndis_handle adapter;
__stdcall ndis_disable_interrupts_handler intrdisfunc;
sc = arg;
adapter = sc->ndis_block->nmb_miniportadapterctx;
intrdisfunc = sc->ndis_chars->nmc_disable_interrupts_func;
if (adapter == NULL || intrdisfunc == NULL)
return;
MSCALL1(intrdisfunc, adapter);
return;
}
int
ndis_isr(arg, ourintr, callhandler)
void *arg;
int *ourintr;
int *callhandler;
{
struct ndis_softc *sc;
ndis_handle adapter;
__stdcall ndis_isr_handler isrfunc;
uint8_t accepted, queue;
if (arg == NULL || ourintr == NULL || callhandler == NULL)
return(EINVAL);
sc = arg;
adapter = sc->ndis_block->nmb_miniportadapterctx;
isrfunc = sc->ndis_chars->nmc_isr_func;
if (adapter == NULL || isrfunc == NULL)
return(ENXIO);
MSCALL3(isrfunc, &accepted, &queue, adapter);
*ourintr = accepted;
*callhandler = queue;
return(0);
}
int
ndis_intrhand(arg)
void *arg;
{
struct ndis_softc *sc;
ndis_handle adapter;
__stdcall ndis_interrupt_handler intrfunc;
if (arg == NULL)
return(EINVAL);
sc = arg;
NDIS_LOCK(sc);
adapter = sc->ndis_block->nmb_miniportadapterctx;
intrfunc = sc->ndis_chars->nmc_interrupt_func;
NDIS_UNLOCK(sc);
if (adapter == NULL || intrfunc == NULL)
return(EINVAL);
MSCALL1(intrfunc, adapter);
return(0);
}
int
ndis_get_info(arg, oid, buf, buflen)
void *arg;
ndis_oid oid;
void *buf;
int *buflen;
{
struct ndis_softc *sc;
ndis_status rval;
ndis_handle adapter;
__stdcall ndis_queryinfo_handler queryfunc;
uint32_t byteswritten = 0, bytesneeded = 0;
int error;
uint8_t irql;
sc = arg;
NDIS_LOCK(sc);
queryfunc = sc->ndis_chars->nmc_queryinfo_func;
adapter = sc->ndis_block->nmb_miniportadapterctx;
NDIS_UNLOCK(sc);
if (adapter == NULL || queryfunc == NULL)
return(ENXIO);
KeAcquireSpinLock(&sc->ndis_block->nmb_lock, &irql);
rval = MSCALL6(queryfunc, adapter, oid, buf, *buflen,
&byteswritten, &bytesneeded);
KeReleaseSpinLock(&sc->ndis_block->nmb_lock, irql);
/* Wait for requests that block. */
if (rval == NDIS_STATUS_PENDING) {
mtx_lock(&ndis_req_mtx);
error = msleep(&sc->ndis_block->nmb_getstat,
&ndis_req_mtx,
curthread->td_priority|PDROP,
"ndisget", 5 * hz);
rval = sc->ndis_block->nmb_getstat;
}
if (byteswritten)
*buflen = byteswritten;
if (bytesneeded)
*buflen = bytesneeded;
if (rval == NDIS_STATUS_INVALID_LENGTH ||
rval == NDIS_STATUS_BUFFER_TOO_SHORT)
return(ENOSPC);
if (rval == NDIS_STATUS_INVALID_OID)
return(EINVAL);
if (rval == NDIS_STATUS_NOT_SUPPORTED ||
rval == NDIS_STATUS_NOT_ACCEPTED)
return(ENOTSUP);
if (rval != NDIS_STATUS_SUCCESS)
return(ENODEV);
return(0);
}
__stdcall uint32_t
NdisAddDevice(drv, pdo)
driver_object *drv;
device_object *pdo;
{
device_object *fdo;
ndis_miniport_block *block;
struct ndis_softc *sc;
uint32_t status;
status = IoCreateDevice(drv, sizeof(ndis_miniport_block), NULL,
FILE_DEVICE_UNKNOWN, 0, FALSE, &fdo);
if (status != STATUS_SUCCESS)
return(status);
block = fdo->do_devext;
block->nmb_deviceobj = fdo;
block->nmb_physdeviceobj = pdo;
block->nmb_nextdeviceobj = IoAttachDeviceToDeviceStack(fdo, pdo);
KeInitializeSpinLock(&block->nmb_lock);
/*
* Stash pointers to the miniport block and miniport
* characteristics info in the if_ndis softc so the
* UNIX wrapper driver can get to them later.
*/
sc = device_get_softc(pdo->do_devext);
sc->ndis_block = block;
sc->ndis_chars = IoGetDriverObjectExtension(drv, (void *)1);
/* Finish up BSD-specific setup. */
block->nmb_signature = (void *)0xcafebabe;
block->nmb_status_func = kernndis_functbl[0].ipt_wrap;
block->nmb_statusdone_func = kernndis_functbl[1].ipt_wrap;
block->nmb_setdone_func = kernndis_functbl[2].ipt_wrap;
block->nmb_querydone_func = kernndis_functbl[3].ipt_wrap;
block->nmb_resetdone_func = kernndis_functbl[4].ipt_wrap;
block->nmb_sendrsrc_func = kernndis_functbl[5].ipt_wrap;
ndis_enlarge_thrqueue(8);
TAILQ_INSERT_TAIL(&ndis_devhead, block, link);
return (STATUS_SUCCESS);
}
int
ndis_unload_driver(arg)
void *arg;
{
struct ndis_softc *sc;
device_object *fdo;
sc = arg;
if (sc->ndis_block->nmb_rlist != NULL)
free(sc->ndis_block->nmb_rlist, M_DEVBUF);
ndis_flush_sysctls(sc);
ndis_shrink_thrqueue(8);
TAILQ_REMOVE(&ndis_devhead, sc->ndis_block, link);
fdo = sc->ndis_block->nmb_deviceobj;
IoDetachDevice(sc->ndis_block->nmb_nextdeviceobj);
IoDeleteDevice(fdo);
return(0);
}
Reference in New Issue View Git Blame Copy Permalink