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freebsd-skq/sys/compat/ndis/kern_ndis.c
Rebecca Cran 23d5a8b50f Use the cprd_mem field when setting the start and length for a memory 
resource - the layout of cprd_port is identical but using cprd_mem
makes the code easier to understand.

PR:		kern/118493
Submitted by:	Weongyo Jeong <weongyo.jeong at gmail.com>
MFC after:	3 days
2011-02-23 21:45:28 +00:00

1438 lines
34 KiB
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/*-
* 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 <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <compat/ndis/pe_var.h>
#include <compat/ndis/cfg_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/usbd_var.h>
#include <dev/if_ndis/if_ndisvar.h>
#define NDIS_DUMMY_PATH "\\\\some\\bogus\\path"
static void ndis_status_func(ndis_handle, ndis_status, void *, uint32_t);
static void ndis_statusdone_func(ndis_handle);
static void ndis_setdone_func(ndis_handle, ndis_status);
static void ndis_getdone_func(ndis_handle, ndis_status);
static void ndis_resetdone_func(ndis_handle, ndis_status, uint8_t);
static void ndis_sendrsrcavail_func(ndis_handle);
static void ndis_intrsetup(kdpc *, device_object *,
irp *, struct ndis_softc *);
static void ndis_return(device_object *, void *);
static image_patch_table kernndis_functbl[] = {
IMPORT_SFUNC(ndis_status_func, 4),
IMPORT_SFUNC(ndis_statusdone_func, 1),
IMPORT_SFUNC(ndis_setdone_func, 2),
IMPORT_SFUNC(ndis_getdone_func, 2),
IMPORT_SFUNC(ndis_resetdone_func, 3),
IMPORT_SFUNC(ndis_sendrsrcavail_func, 1),
IMPORT_SFUNC(ndis_intrsetup, 4),
IMPORT_SFUNC(ndis_return, 1),
{ NULL, NULL, NULL }
};
static struct nd_head ndis_devhead;
/*
* 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.'
*
* Note: some of the subsystems depend on each other, so the
* order in which they're started is important. The order of
* importance is:
*
* HAL - spinlocks and IRQL manipulation
* ntoskrnl - DPC and workitem threads, object waiting
* windrv - driver/device registration
*
* The HAL should also be the last thing shut down, since
* the ntoskrnl subsystem will use spinlocks right up until
* the DPC and workitem threads are terminated.
*/
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 */
hal_libinit();
ntoskrnl_libinit();
windrv_libinit();
ndis_libinit();
usbd_libinit();
patch = kernndis_functbl;
while (patch->ipt_func != NULL) {
windrv_wrap((funcptr)patch->ipt_func,
(funcptr *)&patch->ipt_wrap,
patch->ipt_argcnt, patch->ipt_ftype);
patch++;
}
TAILQ_INIT(&ndis_devhead);
break;
case MOD_SHUTDOWN:
if (TAILQ_FIRST(&ndis_devhead) == NULL) {
/* Shut down subsystems */
ndis_libfini();
usbd_libfini();
windrv_libfini();
ntoskrnl_libfini();
hal_libfini();
patch = kernndis_functbl;
while (patch->ipt_func != NULL) {
windrv_unwrap(patch->ipt_wrap);
patch++;
}
}
break;
case MOD_UNLOAD:
/* Shut down subsystems */
ndis_libfini();
usbd_libfini();
windrv_libfini();
ntoskrnl_libfini();
hal_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);
static void
ndis_sendrsrcavail_func(adapter)
ndis_handle adapter;
{
}
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->ifp;
if (ifp->if_flags & IFF_DEBUG)
device_printf(sc->ndis_dev, "status: %x\n", status);
}
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->ifp;
if (ifp->if_flags & IFF_DEBUG)
device_printf(sc->ndis_dev, "status complete\n");
}
static void
ndis_setdone_func(adapter, status)
ndis_handle adapter;
ndis_status status;
{
ndis_miniport_block *block;
block = adapter;
block->nmb_setstat = status;
KeSetEvent(&block->nmb_setevent, IO_NO_INCREMENT, FALSE);
}
static void
ndis_getdone_func(adapter, status)
ndis_handle adapter;
ndis_status status;
{
ndis_miniport_block *block;
block = adapter;
block->nmb_getstat = status;
KeSetEvent(&block->nmb_getevent, IO_NO_INCREMENT, FALSE);
}
static void
ndis_resetdone_func(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->ifp;
if (ifp->if_flags & IFF_DEBUG)
device_printf(sc->ndis_dev, "reset done...\n");
KeSetEvent(&block->nmb_resetevent, IO_NO_INCREMENT, FALSE);
}
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);
/* Add the driver-specific registry keys. */
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;
TAILQ_FOREACH(e, device_get_sysctl_ctx(sc->ndis_dev), link) {
oidp = e->entry;
if (strcasecmp(oidp->oid_name, vals->nc_cfgkey) == 0)
break;
oidp = NULL;
}
if (oidp != NULL) {
vals++;
continue;
}
ndis_add_sysctl(sc, vals->nc_cfgkey, vals->nc_cfgdesc,
vals->nc_val, CTLFLAG_RW);
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);
/*
* Some miniport drivers rely on the existence of the SlotNumber,
* NetCfgInstanceId and DriverDesc keys.
*/
ndis_add_sysctl(sc, "SlotNumber", "Slot Numer", "01", CTLFLAG_RD);
ndis_add_sysctl(sc, "NetCfgInstanceId", "NetCfgInstanceId",
"{12345678-1234-5678-CAFE0-123456789ABC}", CTLFLAG_RD);
ndis_add_sysctl(sc, "DriverDesc", "Driver Description",
"NDIS Network Adapter", 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) {
printf("failed for %s\n", key);
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);
cfg->ndis_oid =
SYSCTL_ADD_STRING(device_get_sysctl_ctx(sc->ndis_dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(sc->ndis_dev)),
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);
}
/*
* Somewhere, somebody decided "hey, let's automatically create
* a sysctl tree for each device instance as it's created -- it'll
* make life so much easier!" Lies. Why must they turn the kernel
* into a house of lies?
*/
int
ndis_flush_sysctls(arg)
void *arg;
{
struct ndis_softc *sc;
struct ndis_cfglist *cfg;
struct sysctl_ctx_list *clist;
sc = arg;
clist = device_get_sysctl_ctx(sc->ndis_dev);
while (!TAILQ_EMPTY(&sc->ndis_cfglist_head)) {
cfg = TAILQ_FIRST(&sc->ndis_cfglist_head);
TAILQ_REMOVE(&sc->ndis_cfglist_head, cfg, link);
sysctl_ctx_entry_del(clist, cfg->ndis_oid);
sysctl_remove_oid(cfg->ndis_oid, 1, 0);
free(cfg->ndis_cfg.nc_cfgkey, M_DEVBUF);
free(cfg->ndis_cfg.nc_cfgdesc, M_DEVBUF);
free(cfg, M_DEVBUF);
}
return (0);
}
void *
ndis_get_routine_address(functbl, name)
struct image_patch_table *functbl;
char *name;
{
int i;
for (i = 0; functbl[i].ipt_name != NULL; i++)
if (strcmp(name, functbl[i].ipt_name) == 0)
return (functbl[i].ipt_wrap);
return (NULL);
}
static void
ndis_return(dobj, arg)
device_object *dobj;
void *arg;
{
ndis_miniport_block *block;
ndis_miniport_characteristics *ch;
ndis_return_handler returnfunc;
ndis_handle adapter;
ndis_packet *p;
uint8_t irql;
list_entry *l;
block = arg;
ch = IoGetDriverObjectExtension(dobj->do_drvobj, (void *)1);
p = arg;
adapter = block->nmb_miniportadapterctx;
if (adapter == NULL)
return;
returnfunc = ch->nmc_return_packet_func;
KeAcquireSpinLock(&block->nmb_returnlock, &irql);
while (!IsListEmpty(&block->nmb_returnlist)) {
l = RemoveHeadList((&block->nmb_returnlist));
p = CONTAINING_RECORD(l, ndis_packet, np_list);
InitializeListHead((&p->np_list));
KeReleaseSpinLock(&block->nmb_returnlock, irql);
MSCALL2(returnfunc, adapter, p);
KeAcquireSpinLock(&block->nmb_returnlock, &irql);
}
KeReleaseSpinLock(&block->nmb_returnlock, irql);
}
void
ndis_return_packet(buf, arg)
void *buf; /* not used */
void *arg;
{
ndis_packet *p;
ndis_miniport_block *block;
if (arg == NULL)
return;
p = arg;
/* Decrement refcount. */
p->np_refcnt--;
/* Release packet when refcount hits zero, otherwise return. */
if (p->np_refcnt)
return;
block = ((struct ndis_softc *)p->np_softc)->ndis_block;
KeAcquireSpinLockAtDpcLevel(&block->nmb_returnlock);
InitializeListHead((&p->np_list));
InsertHeadList((&block->nmb_returnlist), (&p->np_list));
KeReleaseSpinLockFromDpcLevel(&block->nmb_returnlock);
IoQueueWorkItem(block->nmb_returnitem,
(io_workitem_func)kernndis_functbl[7].ipt_wrap,
WORKQUEUE_CRITICAL, block);
}
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;
}
}
void
ndis_free_packet(p)
ndis_packet *p;
{
if (p == NULL)
return;
ndis_free_bufs(p->np_private.npp_head);
NdisFreePacket(p);
}
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_entry *brle;
int error = 0;
sc = arg;
block = sc->ndis_block;
dev = sc->ndis_dev;
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) {
STAILQ_FOREACH(brle, brl, 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_mem.cprd_start.np_quad =
brle->start;
prd->u.cprd_mem.cprd_len = brle->count;
break;
case SYS_RES_IRQ:
prd->cprd_type = CmResourceTypeInterrupt;
prd->cprd_flags = 0;
/*
* Always mark interrupt resources as
* shared, since in our implementation,
* they will be.
*/
prd->cprd_sharedisp =
CmResourceShareShared;
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;
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 = NULL, *prev = NULL;
ndis_buffer *buf;
ndis_packet_private *priv;
uint32_t totlen = 0;
struct ifnet *ifp;
struct ether_header *eh;
int diff;
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)
#ifdef MT_HEADER
MGETHDR(m, M_DONTWAIT, MT_HEADER);
#else
MGETHDR(m, M_DONTWAIT, MT_DATA);
#endif
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,
m->m_data, p, 0, EXT_NDIS);
p->np_refcnt++;
totlen += m->m_len;
if (m->m_flags & M_PKTHDR)
*m0 = m;
else
prev->m_next = m;
prev = m;
}
/*
* This is a hack to deal with the Marvell 8335 driver
* which, when associated with an AP in WPA-PSK mode,
* seems to overpad its frames by 8 bytes. I don't know
* that the extra 8 bytes are for, and they're not there
* in open mode, so for now clamp the frame size at 1514
* until I can figure out how to deal with this properly,
* otherwise if_ethersubr() will spank us by discarding
* the 'oversize' frames.
*/
eh = mtod((*m0), struct ether_header *);
ifp = ((struct ndis_softc *)p->np_softc)->ifp;
if (totlen > ETHER_MAX_FRAME(ifp, eh->ether_type, FALSE)) {
diff = totlen - ETHER_MAX_FRAME(ifp, eh->ether_type, FALSE);
totlen -= diff;
m->m_len -= diff;
}
(*m0)->m_pkthdr.len = totlen;
return (0);
}
/*
* Create an NDIS packet from an mbuf 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);
}
MmBuildMdlForNonPagedPool(buf);
if (priv->npp_head == NULL)
priv->npp_head = buf;
else
prev->mdl_next = buf;
prev = buf;
}
priv->npp_tail = buf;
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;
ndis_setinfo_handler setfunc;
uint32_t byteswritten = 0, bytesneeded = 0;
uint8_t irql;
uint64_t duetime;
/*
* According to the NDIS spec, MiniportQueryInformation()
* and MiniportSetInformation() requests are handled serially:
* once one request has been issued, we must wait for it to
* finish before allowing another request to proceed.
*/
sc = arg;
KeResetEvent(&sc->ndis_block->nmb_setevent);
KeAcquireSpinLock(&sc->ndis_block->nmb_lock, &irql);
if (sc->ndis_block->nmb_pendingreq != NULL) {
KeReleaseSpinLock(&sc->ndis_block->nmb_lock, irql);
panic("ndis_set_info() called while other request pending");
} else
sc->ndis_block->nmb_pendingreq = (ndis_request *)sc;
setfunc = sc->ndis_chars->nmc_setinfo_func;
adapter = sc->ndis_block->nmb_miniportadapterctx;
if (adapter == NULL || setfunc == NULL ||
sc->ndis_block->nmb_devicectx == NULL) {
sc->ndis_block->nmb_pendingreq = NULL;
KeReleaseSpinLock(&sc->ndis_block->nmb_lock, irql);
return (ENXIO);
}
rval = MSCALL6(setfunc, adapter, oid, buf, *buflen,
&byteswritten, &bytesneeded);
sc->ndis_block->nmb_pendingreq = NULL;
KeReleaseSpinLock(&sc->ndis_block->nmb_lock, irql);
if (rval == NDIS_STATUS_PENDING) {
/* Wait up to 5 seconds. */
duetime = (5 * 1000000) * -10;
KeWaitForSingleObject(&sc->ndis_block->nmb_setevent,
0, 0, FALSE, &duetime);
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;
ndis_sendmulti_handler sendfunc;
ndis_senddone_func senddonefunc;
int i;
ndis_packet *p;
uint8_t irql = 0;
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;
if (NDIS_SERIALIZED(sc->ndis_block))
KeAcquireSpinLock(&sc->ndis_block->nmb_lock, &irql);
MSCALL3(sendfunc, adapter, packets, cnt);
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);
}
if (NDIS_SERIALIZED(sc->ndis_block))
KeReleaseSpinLock(&sc->ndis_block->nmb_lock, irql);
return (0);
}
int
ndis_send_packet(arg, packet)
void *arg;
ndis_packet *packet;
{
struct ndis_softc *sc;
ndis_handle adapter;
ndis_status status;
ndis_sendsingle_handler sendfunc;
ndis_senddone_func senddonefunc;
uint8_t irql = 0;
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;
if (NDIS_SERIALIZED(sc->ndis_block))
KeAcquireSpinLock(&sc->ndis_block->nmb_lock, &irql);
status = MSCALL3(sendfunc, adapter, packet,
packet->np_private.npp_flags);
if (status == NDIS_STATUS_PENDING) {
if (NDIS_SERIALIZED(sc->ndis_block))
KeReleaseSpinLock(&sc->ndis_block->nmb_lock, irql);
return (0);
}
MSCALL3(senddonefunc, sc->ndis_block, packet, status);
if (NDIS_SERIALIZED(sc->ndis_block))
KeReleaseSpinLock(&sc->ndis_block->nmb_lock, irql);
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;
ndis_reset_handler resetfunc;
uint8_t addressing_reset;
int rval;
uint8_t irql = 0;
sc = arg;
NDIS_LOCK(sc);
adapter = sc->ndis_block->nmb_miniportadapterctx;
resetfunc = sc->ndis_chars->nmc_reset_func;
if (adapter == NULL || resetfunc == NULL ||
sc->ndis_block->nmb_devicectx == NULL) {
NDIS_UNLOCK(sc);
return (EIO);
}
NDIS_UNLOCK(sc);
KeResetEvent(&sc->ndis_block->nmb_resetevent);
if (NDIS_SERIALIZED(sc->ndis_block))
KeAcquireSpinLock(&sc->ndis_block->nmb_lock, &irql);
rval = MSCALL2(resetfunc, &addressing_reset, adapter);
if (NDIS_SERIALIZED(sc->ndis_block))
KeReleaseSpinLock(&sc->ndis_block->nmb_lock, irql);
if (rval == NDIS_STATUS_PENDING)
KeWaitForSingleObject(&sc->ndis_block->nmb_resetevent,
0, 0, FALSE, NULL);
return (0);
}
int
ndis_halt_nic(arg)
void *arg;
{
struct ndis_softc *sc;
ndis_handle adapter;
ndis_halt_handler haltfunc;
ndis_miniport_block *block;
int empty = 0;
uint8_t irql;
sc = arg;
block = sc->ndis_block;
if (!cold)
KeFlushQueuedDpcs();
/*
* Wait for all packets to be returned.
*/
while (1) {
KeAcquireSpinLock(&block->nmb_returnlock, &irql);
empty = IsListEmpty(&block->nmb_returnlist);
KeReleaseSpinLock(&block->nmb_returnlock, irql);
if (empty)
break;
NdisMSleep(1000);
}
NDIS_LOCK(sc);
adapter = sc->ndis_block->nmb_miniportadapterctx;
if (adapter == NULL) {
NDIS_UNLOCK(sc);
return (EIO);
}
sc->ndis_block->nmb_devicectx = NULL;
/*
* 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;
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);
TAILQ_REMOVE(&ndis_devhead, sc->ndis_block, link);
return (0);
}
int
ndis_pnpevent_nic(arg, type)
void *arg;
int type;
{
device_t dev;
struct ndis_softc *sc;
ndis_handle adapter;
ndis_pnpevent_handler pnpeventfunc;
dev = arg;
sc = device_get_softc(arg);
NDIS_LOCK(sc);
adapter = sc->ndis_block->nmb_miniportadapterctx;
pnpeventfunc = sc->ndis_chars->nmc_pnpevent_handler;
NDIS_UNLOCK(sc);
if (adapter == NULL || pnpeventfunc == NULL)
return (EIO);
if (sc->ndis_chars->nmc_rsvd0 == NULL)
MSCALL4(pnpeventfunc, adapter, type, NULL, 0);
else
MSCALL4(pnpeventfunc, sc->ndis_chars->nmc_rsvd0, type, NULL, 0);
return (0);
}
int
ndis_init_nic(arg)
void *arg;
{
struct ndis_softc *sc;
ndis_miniport_block *block;
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);
sc->ndis_block->nmb_timerlist = NULL;
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);
}
/*
* This may look really goofy, but apparently it is possible
* to halt a miniport too soon after it's been initialized.
* After MiniportInitialize() finishes, pause for 1 second
* to give the chip a chance to handle any short-lived timers
* that were set in motion. If we call MiniportHalt() too soon,
* some of the timers may not be cancelled, because the driver
* expects them to fire before the halt is called.
*/
pause("ndwait", hz);
NDIS_LOCK(sc);
sc->ndis_block->nmb_devicectx = sc;
NDIS_UNLOCK(sc);
return (0);
}
static void
ndis_intrsetup(dpc, dobj, ip, sc)
kdpc *dpc;
device_object *dobj;
irp *ip;
struct ndis_softc *sc;
{
ndis_miniport_interrupt *intr;
intr = sc->ndis_block->nmb_interrupt;
/* Sanity check. */
if (intr == NULL)
return;
KeAcquireSpinLockAtDpcLevel(&intr->ni_dpccountlock);
KeResetEvent(&intr->ni_dpcevt);
if (KeInsertQueueDpc(&intr->ni_dpc, NULL, NULL) == TRUE)
intr->ni_dpccnt++;
KeReleaseSpinLockFromDpcLevel(&intr->ni_dpccountlock);
}
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;
ndis_queryinfo_handler queryfunc;
uint32_t byteswritten = 0, bytesneeded = 0;
uint8_t irql;
uint64_t duetime;
sc = arg;
KeResetEvent(&sc->ndis_block->nmb_getevent);
KeAcquireSpinLock(&sc->ndis_block->nmb_lock, &irql);
if (sc->ndis_block->nmb_pendingreq != NULL) {
KeReleaseSpinLock(&sc->ndis_block->nmb_lock, irql);
panic("ndis_get_info() called while other request pending");
} else
sc->ndis_block->nmb_pendingreq = (ndis_request *)sc;
queryfunc = sc->ndis_chars->nmc_queryinfo_func;
adapter = sc->ndis_block->nmb_miniportadapterctx;
if (adapter == NULL || queryfunc == NULL ||
sc->ndis_block->nmb_devicectx == NULL) {
sc->ndis_block->nmb_pendingreq = NULL;
KeReleaseSpinLock(&sc->ndis_block->nmb_lock, irql);
return (ENXIO);
}
rval = MSCALL6(queryfunc, adapter, oid, buf, *buflen,
&byteswritten, &bytesneeded);
sc->ndis_block->nmb_pendingreq = NULL;
KeReleaseSpinLock(&sc->ndis_block->nmb_lock, irql);
/* Wait for requests that block. */
if (rval == NDIS_STATUS_PENDING) {
/* Wait up to 5 seconds. */
duetime = (5 * 1000000) * -10;
KeWaitForSingleObject(&sc->ndis_block->nmb_getevent,
0, 0, FALSE, &duetime);
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);
}
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;
int error;
sc = device_get_softc(pdo->do_devext);
if (sc->ndis_iftype == PCMCIABus || sc->ndis_iftype == PCIBus) {
error = bus_setup_intr(sc->ndis_dev, sc->ndis_irq,
INTR_TYPE_NET | INTR_MPSAFE,
NULL, ntoskrnl_intr, NULL, &sc->ndis_intrhand);
if (error)
return (NDIS_STATUS_FAILURE);
}
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_filterdbs.nf_ethdb = block;
block->nmb_deviceobj = fdo;
block->nmb_physdeviceobj = pdo;
block->nmb_nextdeviceobj = IoAttachDeviceToDeviceStack(fdo, pdo);
KeInitializeSpinLock(&block->nmb_lock);
KeInitializeSpinLock(&block->nmb_returnlock);
KeInitializeEvent(&block->nmb_getevent, EVENT_TYPE_NOTIFY, TRUE);
KeInitializeEvent(&block->nmb_setevent, EVENT_TYPE_NOTIFY, TRUE);
KeInitializeEvent(&block->nmb_resetevent, EVENT_TYPE_NOTIFY, TRUE);
InitializeListHead(&block->nmb_parmlist);
InitializeListHead(&block->nmb_returnlist);
block->nmb_returnitem = IoAllocateWorkItem(fdo);
/*
* 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->ndis_block = block;
sc->ndis_chars = IoGetDriverObjectExtension(drv, (void *)1);
/*
* If the driver has a MiniportTransferData() function,
* we should allocate a private RX packet pool.
*/
if (sc->ndis_chars->nmc_transferdata_func != NULL) {
NdisAllocatePacketPool(&status, &block->nmb_rxpool,
32, PROTOCOL_RESERVED_SIZE_IN_PACKET);
if (status != NDIS_STATUS_SUCCESS) {
IoDetachDevice(block->nmb_nextdeviceobj);
IoDeleteDevice(fdo);
return (status);
}
InitializeListHead((&block->nmb_packetlist));
}
/* Give interrupt handling priority over timers. */
IoInitializeDpcRequest(fdo, kernndis_functbl[6].ipt_wrap);
KeSetImportanceDpc(&fdo->do_dpc, KDPC_IMPORTANCE_HIGH);
/* 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;
block->nmb_pendingreq = NULL;
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_intrhand)
bus_teardown_intr(sc->ndis_dev,
sc->ndis_irq, sc->ndis_intrhand);
if (sc->ndis_block->nmb_rlist != NULL)
free(sc->ndis_block->nmb_rlist, M_DEVBUF);
ndis_flush_sysctls(sc);
TAILQ_REMOVE(&ndis_devhead, sc->ndis_block, link);
if (sc->ndis_chars->nmc_transferdata_func != NULL)
NdisFreePacketPool(sc->ndis_block->nmb_rxpool);
fdo = sc->ndis_block->nmb_deviceobj;
IoFreeWorkItem(sc->ndis_block->nmb_returnitem);
IoDetachDevice(sc->ndis_block->nmb_nextdeviceobj);
IoDeleteDevice(fdo);
return (0);
}
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