50b751a7d4
also do it). Three problems have been encountered: 1. The initialisation command does not work in interrupt mode. Whether this is a firmware bug or a feature is not clear. The original Fore drivers execute the initialize command always in polling mode, so it appears that this behaviour is expected. When we detect a 4.X.Y firmware do busy wait on the command status. 2. The command code of the GET_PROM command has changed. This is an unofficial command anyway. What was GET_PROM in 3.X.Y is CLEAR_STATS in 4.X.Y (although unimplemented in the firmware). We need to use the correct code depending on the firmware. 3. The 4.X.Y firmware can set the error flag in the command status without also setting the completion flag (as the documenation says). Check both variants. An additional field in the per-card structure fu_ft4 is TRUE when we have detected a 4.X.Y firmware. Otherwise it is false. The behaviour of the driver when using a 3.X.Y firmware should be identical to the previous behaviour. This change will enable traffic shaping of (at least one) CBR channels.
466 lines
9.0 KiB
C
466 lines
9.0 KiB
C
/*
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*
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* ===================================
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* HARP | Host ATM Research Platform
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* ===================================
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*
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*
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* This Host ATM Research Platform ("HARP") file (the "Software") is
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* made available by Network Computing Services, Inc. ("NetworkCS")
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* "AS IS". NetworkCS does not provide maintenance, improvements or
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* support of any kind.
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*
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* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
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* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
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* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
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* In no event shall NetworkCS be responsible for any damages, including
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* but not limited to consequential damages, arising from or relating to
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* any use of the Software or related support.
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*
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* Copyright 1994-1998 Network Computing Services, Inc.
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*
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* Copies of this Software may be made, however, the above copyright
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* notice must be reproduced on all copies.
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*
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* @(#) $FreeBSD$
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*
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*/
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/*
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* FORE Systems 200-Series Adapter Support
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* ---------------------------------------
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*
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* Command queue management
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*
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/syslog.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <net/if.h>
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#include <netatm/port.h>
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#include <netatm/queue.h>
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#include <netatm/atm.h>
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#include <netatm/atm_sys.h>
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#include <netatm/atm_sap.h>
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#include <netatm/atm_cm.h>
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#include <netatm/atm_if.h>
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#include <netatm/atm_vc.h>
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#include <netatm/atm_stack.h>
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#include <netatm/atm_pcb.h>
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#include <netatm/atm_var.h>
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#include <pci/pcivar.h>
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#include <dev/hfa/fore.h>
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#include <dev/hfa/fore_aali.h>
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#include <dev/hfa/fore_slave.h>
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#include <dev/hfa/fore_stats.h>
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#include <dev/hfa/fore_var.h>
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#include <dev/hfa/fore_include.h>
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#ifndef lint
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__RCSID("@(#) $FreeBSD$");
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#endif
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/*
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* Local variables
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*/
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static struct t_atm_cause fore_cause = {
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T_ATM_ITU_CODING,
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T_ATM_LOC_USER,
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T_ATM_CAUSE_TEMPORARY_FAILURE,
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{0, 0, 0, 0}
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};
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/*
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* Allocate Command Queue Data Structures
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*
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* Arguments:
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* fup pointer to device unit structure
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*
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* Returns:
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* 0 allocations successful
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* else allocation failed
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*/
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int
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fore_cmd_allocate(fup)
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Fore_unit *fup;
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{
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caddr_t memp;
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/*
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* Allocate non-cacheable memory for command status words
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*/
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memp = atm_dev_alloc(sizeof(Q_status) * CMD_QUELEN,
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QSTAT_ALIGN, ATM_DEV_NONCACHE);
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if (memp == NULL) {
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return (1);
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}
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fup->fu_cmd_stat = (Q_status *) memp;
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memp = (caddr_t)vtophys(fup->fu_cmd_stat);
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if (memp == NULL) {
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return (1);
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}
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fup->fu_cmd_statd = (Q_status *) memp;
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/*
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* Allocate memory for statistics buffer
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*/
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memp = atm_dev_alloc(sizeof(Fore_stats), FORE_STATS_ALIGN, 0);
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if (memp == NULL) {
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return (1);
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}
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fup->fu_stats = (Fore_stats *) memp;
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/*
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* Allocate memory for PROM buffer
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*/
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memp = atm_dev_alloc(sizeof(Fore_prom), FORE_PROM_ALIGN, 0);
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if (memp == NULL) {
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return (1);
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}
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fup->fu_prom = (Fore_prom *) memp;
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return (0);
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}
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/*
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* Command Queue Initialization
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*
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* Allocate and initialize the host-resident command queue structures
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* and then initialize the CP-resident queue structures.
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*
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* Called at interrupt level.
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*
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* Arguments:
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* fup pointer to device unit structure
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*
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* Returns:
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* none
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*/
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void
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fore_cmd_initialize(fup)
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Fore_unit *fup;
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{
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Aali *aap = fup->fu_aali;
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Cmd_queue *cqp;
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H_cmd_queue *hcp;
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Q_status *qsp;
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Q_status *qsp_dma;
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int i;
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/*
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* Point to CP-resident command queue
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*/
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cqp = (Cmd_queue *)(fup->fu_ram + CP_READ(aap->aali_cmd_q));
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/*
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* Point to host-resident command queue structures
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*/
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hcp = fup->fu_cmd_q;
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qsp = fup->fu_cmd_stat;
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qsp_dma = fup->fu_cmd_statd;
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/*
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* Loop thru all queue entries and do whatever needs doing
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*/
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for (i = 0; i < CMD_QUELEN; i++) {
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/*
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* Set queue status word to free
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*/
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*qsp = QSTAT_FREE;
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/*
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* Set up host queue entry and link into ring
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*/
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hcp->hcq_cpelem = cqp;
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hcp->hcq_status = qsp;
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if (i == (CMD_QUELEN - 1))
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hcp->hcq_next = fup->fu_cmd_q;
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else
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hcp->hcq_next = hcp + 1;
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/*
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* Now let the CP into the game
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*/
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cqp->cmdq_status = (CP_dma) CP_WRITE(qsp_dma);
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/*
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* Bump all queue pointers
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*/
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hcp++;
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qsp++;
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qsp_dma++;
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cqp++;
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}
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/*
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* Initialize queue pointers
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*/
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fup->fu_cmd_head = fup->fu_cmd_tail = fup->fu_cmd_q;
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return;
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}
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/*
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* Drain Command Queue
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*
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* This function will process and free all completed entries at the head
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* of the command queue.
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*
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* May be called in interrupt state.
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* Must be called with interrupts locked out.
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*
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* Arguments:
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* fup pointer to device unit structure
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*
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* Returns:
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* none
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*/
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void
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fore_cmd_drain(fup)
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Fore_unit *fup;
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{
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H_cmd_queue *hcp;
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Fore_vcc *fvp;
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/*
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* Process each completed entry
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* ForeThought 4 may set QSTAT_ERROR without QSTAT_COMPLETED.
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*/
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while (*fup->fu_cmd_head->hcq_status & (QSTAT_COMPLETED | QSTAT_ERROR)) {
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hcp = fup->fu_cmd_head;
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/*
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* Process command completion
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*/
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switch (hcp->hcq_code) {
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case CMD_ACT_VCCIN:
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case CMD_ACT_VCCOUT:
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fvp = hcp->hcq_arg;
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if (*hcp->hcq_status & QSTAT_ERROR) {
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/*
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* VCC activation failed - just abort vcc
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*/
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if (fvp)
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atm_cm_abort(fvp->fv_connvc,
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&fore_cause);
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fup->fu_pif.pif_cmderrors++;
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} else {
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/*
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* Successful VCC activation
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*/
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if (fvp) {
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fvp->fv_state = CVS_ACTIVE;
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fup->fu_open_vcc++;
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}
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}
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break;
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case CMD_DACT_VCCIN:
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case CMD_DACT_VCCOUT:
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fvp = hcp->hcq_arg;
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if (*hcp->hcq_status & QSTAT_ERROR) {
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/*
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* VCC dactivation failed - whine
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*/
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log(LOG_ERR,
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"fore_cmd_drain: DACT failed, vcc=(%d,%d)\n",
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fvp->fv_connvc->cvc_vcc->vc_vpi,
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fvp->fv_connvc->cvc_vcc->vc_vci);
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fup->fu_pif.pif_cmderrors++;
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} else {
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/*
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* Successful VCC dactivation - so what?
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*/
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}
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break;
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case CMD_GET_STATS:
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if (*hcp->hcq_status & QSTAT_ERROR) {
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/*
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* Couldn't get stats
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*/
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fup->fu_pif.pif_cmderrors++;
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fup->fu_stats_ret = EIO;
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} else {
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/*
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* Stats are now in unit buffer
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*/
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fup->fu_stats_ret = 0;
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}
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fup->fu_flags &= ~FUF_STATCMD;
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/*
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* Flush received stats data
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*/
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#ifdef VAC
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if (vac)
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vac_pageflush((addr_t)fup->fu_stats);
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#endif
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#if BYTE_ORDER == LITTLE_ENDIAN
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/*
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* Little endian machines receives the stats in
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* wrong byte order. Instead of swapping in user
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* land, swap here so that everything going out
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* of the kernel is in correct host order.
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*/
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{
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u_long *bp = (u_long *)fup->fu_stats;
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int loop;
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for ( loop = 0; loop < sizeof(Fore_cp_stats)/
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sizeof(long); loop++, bp++ )
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*bp = ntohl(*bp);
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}
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#endif /* BYTE_ORDER == LITTLE_ENDIAN */
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/*
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* Poke whoever is waiting on the stats
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*/
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wakeup(&fup->fu_stats);
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break;
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case CMD_GET_PROM:
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if (fup->fu_ft4)
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goto unknown;
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goto prom;
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case CMD_GET_PROM4:
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if (!fup->fu_ft4)
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goto unknown;
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prom:
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if (*hcp->hcq_status & QSTAT_ERROR) {
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/*
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* Couldn't get PROM data
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*/
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fup->fu_pif.pif_cmderrors++;
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log(LOG_ERR,
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"fore_cmd_drain: %s%d: GET_PROM failed\n",
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fup->fu_pif.pif_name,
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fup->fu_pif.pif_unit);
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} else {
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Fore_prom *fp = fup->fu_prom;
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/*
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* Flush received PROM data
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*/
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#ifdef VAC
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if (vac)
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vac_pageflush((addr_t)fp);
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#endif
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/*
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* Copy PROM info into config areas
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*/
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bcopy(&fp->pr_mac[2],
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&fup->fu_pif.pif_macaddr,
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sizeof(struct mac_addr));
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fup->fu_config.ac_macaddr =
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fup->fu_pif.pif_macaddr;
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snprintf(fup->fu_config.ac_hard_vers,
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sizeof(fup->fu_config.ac_hard_vers),
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"%ld.%ld.%ld",
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(fp->pr_hwver >> 16) & 0xff,
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(fp->pr_hwver >> 8) & 0xff,
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fp->pr_hwver & 0xff);
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fup->fu_config.ac_serial = fp->pr_serno;
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}
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break;
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default:
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unknown:
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log(LOG_ERR, "fore_cmd_drain: unknown command %ld\n",
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hcp->hcq_code);
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}
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/*
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* Mark this entry free for use and bump head pointer
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* to the next entry in the queue
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*/
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*hcp->hcq_status = QSTAT_FREE;
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fup->fu_cmd_head = hcp->hcq_next;
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}
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return;
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}
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/*
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* Free Command Queue Data Structures
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*
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* Arguments:
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* fup pointer to device unit structure
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*
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* Returns:
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* none
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*/
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void
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fore_cmd_free(fup)
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Fore_unit *fup;
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{
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H_cmd_queue *hcp;
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/*
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* Deal with any commands left on the queue
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*/
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if (fup->fu_flags & CUF_INITED) {
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while (*fup->fu_cmd_head->hcq_status != QSTAT_FREE) {
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hcp = fup->fu_cmd_head;
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switch (hcp->hcq_code) {
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case CMD_GET_STATS:
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/*
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* Just in case someone is sleeping on this
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*/
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fup->fu_stats_ret = EIO;
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wakeup(&fup->fu_stats);
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break;
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}
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*hcp->hcq_status = QSTAT_FREE;
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fup->fu_cmd_head = hcp->hcq_next;
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}
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}
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/*
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* Free the statistics buffer
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*/
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if (fup->fu_stats) {
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atm_dev_free(fup->fu_stats);
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fup->fu_stats = NULL;
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}
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/*
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* Free the PROM buffer
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*/
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if (fup->fu_prom) {
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atm_dev_free(fup->fu_prom);
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fup->fu_prom = NULL;
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}
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/*
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* Free the status words
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*/
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if (fup->fu_cmd_stat) {
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atm_dev_free((volatile void *)fup->fu_cmd_stat);
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fup->fu_cmd_stat = NULL;
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fup->fu_cmd_statd = NULL;
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}
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return;
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}
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