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/*-
* ===================================
* HARP | Host ATM Research Platform
* ===================================
*
* This Host ATM Research Platform ("HARP") file (the "Software") is
* made available by Network Computing Services, Inc. ("NetworkCS")
* "AS IS". NetworkCS does not provide maintenance, improvements or
* support of any kind.
*
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
* In no event shall NetworkCS be responsible for any damages, including
* but not limited to consequential damages, arising from or relating to
* any use of the Software or related support.
*
* Copyright 1994-1998 Network Computing Services, Inc.
*
* Copies of this Software may be made, however, the above copyright
* notice must be reproduced on all copies.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* FORE Systems 200-Series Adapter Support
* ---------------------------------------
*
* Device statistics routines
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <net/if.h>
#include <netatm/port.h>
#include <netatm/queue.h>
#include <netatm/atm.h>
#include <netatm/atm_sys.h>
#include <netatm/atm_sap.h>
#include <netatm/atm_cm.h>
#include <netatm/atm_if.h>
#include <netatm/atm_stack.h>
#include <netatm/atm_pcb.h>
#include <netatm/atm_var.h>
#include <dev/pci/pcivar.h>
#include <dev/hfa/fore.h>
#include <dev/hfa/fore_aali.h>
#include <dev/hfa/fore_slave.h>
#include <dev/hfa/fore_stats.h>
#include <dev/hfa/fore_var.h>
#include <dev/hfa/fore_include.h>
#ifndef lint
__RCSID("@(#) $FreeBSD$");
#endif
/*
* Get device statistics from CP
*
* This function will issue a GET_STATS command to the CP in order to
* initiate the DMA transfer of the CP's statistics structure to the host.
* We will then sleep pending command completion. This must only be called
* from the ioctl system call handler.
*
* Called at splnet.
*
* Arguments:
* fup pointer to device unit structure
*
* Returns:
* 0 stats retrieval successful
* errno stats retrieval failed - reason indicated
*
*/
int
fore_get_stats(fup)
Fore_unit *fup;
{
H_cmd_queue *hcp;
Cmd_queue *cqp;
int s, sst;
ATM_DEBUG1("fore_get_stats: fup=%p\n", fup);
/*
* Make sure device has been initialized
*/
if ((fup->fu_flags & CUF_INITED) == 0) {
return (EIO);
}
/*
* If someone has already initiated a stats request, we'll
* just wait for that one to complete
*/
s = splimp();
if (fup->fu_flags & FUF_STATCMD) {
#if (defined(BSD) && (BSD >= 199103))
sst = tsleep((caddr_t)&fup->fu_stats, PWAIT|PCATCH, "fore", 0);
#else
sst = sleep((caddr_t)&fup->fu_stats, PWAIT|PCATCH);
if (sst != 0)
sst = EINTR;
#endif
(void) splx(s);
return (sst ? sst : fup->fu_stats_ret);
}
/*
* Limit stats gathering to once a second or so
*/
if (time_second == fup->fu_stats_time) {
(void) splx(s);
return (0);
} else
fup->fu_stats_time = time_second;
/*
* Queue command at end of command queue
*/
hcp = fup->fu_cmd_tail;
if ((*hcp->hcq_status) & QSTAT_FREE) {
vm_paddr_t dma;
/*
* Queue entry available, so set our view of things up
*/
hcp->hcq_code = CMD_GET_STATS;
hcp->hcq_arg = NULL;
fup->fu_cmd_tail = hcp->hcq_next;
/*
* Now set the CP-resident queue entry - the CP will grab
* the command when the op-code is set.
*/
cqp = hcp->hcq_cpelem;
(*hcp->hcq_status) = QSTAT_PENDING;
dma = vtophys(fup->fu_stats);
if (dma == 0) {
fup->fu_stats->st_drv.drv_cm_nodma++;
(void) splx(s);
return (EIO);
}
fup->fu_statsd = dma;
cqp->cmdq_stats.stats_buffer = (CP_dma) CP_WRITE(dma);
fup->fu_flags |= FUF_STATCMD;
cqp->cmdq_stats.stats_cmd =
CP_WRITE(CMD_GET_STATS | CMD_INTR_REQ);
/*
* Now wait for command to finish
*/
#if (defined(BSD) && (BSD >= 199103))
sst = tsleep((caddr_t)&fup->fu_stats, PWAIT|PCATCH, "fore", 0);
#else
sst = sleep((caddr_t)&fup->fu_stats, PWAIT|PCATCH);
if (sst != 0)
sst = EINTR;
#endif
(void) splx(s);
return (sst ? sst : fup->fu_stats_ret);
} else {
/*
* Command queue full
*/
fup->fu_stats->st_drv.drv_cm_full++;
(void) splx(s);
return (EIO);
}
}
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