diff options
Diffstat (limited to 'sys/dev/hfa/fore_transmit.c')
| -rw-r--r-- | sys/dev/hfa/fore_transmit.c | 383 |
1 files changed, 0 insertions, 383 deletions
diff --git a/sys/dev/hfa/fore_transmit.c b/sys/dev/hfa/fore_transmit.c deleted file mode 100644 index e22f696..0000000 --- a/sys/dev/hfa/fore_transmit.c +++ /dev/null @@ -1,383 +0,0 @@ -/*- - * =================================== - * 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 - * --------------------------------------- - * - * Transmit queue management - * - */ - -#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_vc.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 - - -/* - * Allocate Transmit Queue Data Structures - * - * Arguments: - * fup pointer to device unit structure - * - * Returns: - * 0 allocations successful - * else allocation failed - */ -int -fore_xmit_allocate(fup) - Fore_unit *fup; -{ - void *memp; - vm_paddr_t pmemp; - H_xmit_queue *hxp; - int i; - - /* - * Allocate non-cacheable memory for transmit status words - */ - memp = atm_dev_alloc(sizeof(Q_status) * XMIT_QUELEN, - QSTAT_ALIGN, ATM_DEV_NONCACHE); - if (memp == NULL) { - return (1); - } - fup->fu_xmit_stat = (Q_status *) memp; - - pmemp = vtophys(fup->fu_xmit_stat); - if (pmemp == 0) { - return (1); - } - fup->fu_xmit_statd = pmemp; - - /* - * Allocate memory for transmit descriptors - * - * We will allocate the transmit descriptors individually rather than - * as a single memory block, which will often be larger than a memory - * page. On some systems (eg. FreeBSD) the physical addresses of - * adjacent virtual memory pages are not contiguous. - */ - hxp = fup->fu_xmit_q; - for (i = 0; i < XMIT_QUELEN; i++, hxp++) { - - /* - * Allocate a transmit descriptor for this queue entry - */ - hxp->hxq_descr = atm_dev_alloc(sizeof(Xmit_descr), - XMIT_DESCR_ALIGN, 0); - if (hxp->hxq_descr == NULL) { - return (1); - } - - hxp->hxq_descr_dma = vtophys(hxp->hxq_descr); - if (hxp->hxq_descr_dma == 0) { - return (1); - } - } - - return (0); -} - - -/* - * Transmit Queue Initialization - * - * Allocate and initialize the host-resident transmit queue structures - * and then initialize the CP-resident queue structures. - * - * Called at interrupt level. - * - * Arguments: - * fup pointer to device unit structure - * - * Returns: - * none - */ -void -fore_xmit_initialize(fup) - Fore_unit *fup; -{ - Aali *aap = fup->fu_aali; - Xmit_queue *cqp; - H_xmit_queue *hxp; - Q_status *qsp; - vm_paddr_t qsp_dma; - int i; - - /* - * Point to CP-resident transmit queue - */ - cqp = (Xmit_queue *)(fup->fu_ram + CP_READ(aap->aali_xmit_q)); - - /* - * Point to host-resident transmit queue structures - */ - hxp = fup->fu_xmit_q; - qsp = fup->fu_xmit_stat; - qsp_dma = fup->fu_xmit_statd; - - /* - * Loop thru all queue entries and do whatever needs doing - */ - for (i = 0; i < XMIT_QUELEN; i++) { - - /* - * Set queue status word to free - */ - *qsp = QSTAT_FREE; - - /* - * Set up host queue entry and link into ring - */ - hxp->hxq_cpelem = cqp; - hxp->hxq_status = qsp; - if (i == (XMIT_QUELEN - 1)) - hxp->hxq_next = fup->fu_xmit_q; - else - hxp->hxq_next = hxp + 1; - - /* - * Now let the CP into the game - */ - cqp->cq_status = (CP_dma) CP_WRITE(qsp_dma); - - /* - * Bump all queue pointers - */ - hxp++; - qsp++; - qsp_dma += sizeof(Q_status); - cqp++; - } - - /* - * Initialize queue pointers - */ - fup->fu_xmit_head = fup->fu_xmit_tail = fup->fu_xmit_q; - - return; -} - - -/* - * Drain Transmit Queue - * - * This function will free all completed entries at the head of the - * transmit queue. Freeing the entry includes releasing the transmit - * buffers (buffer chain) back to the kernel. - * - * May be called in interrupt state. - * Must be called with interrupts locked out. - * - * Arguments: - * fup pointer to device unit structure - * - * Returns: - * none - */ -void -fore_xmit_drain(fup) - Fore_unit *fup; -{ - H_xmit_queue *hxp; - H_dma *sdmap; - Fore_vcc *fvp; - struct vccb *vcp; - KBuffer *m; - - /* - * Process each completed entry - */ - while (*fup->fu_xmit_head->hxq_status & QSTAT_COMPLETED) { - - hxp = fup->fu_xmit_head; - - /* - * Release the entry's DMA addresses and buffer chain - */ - for (m = hxp->hxq_buf, sdmap = hxp->hxq_dma; m; - m = KB_NEXT(m), sdmap++) { - caddr_t cp; - - KB_DATASTART(m, cp, caddr_t); - } - KB_FREEALL(hxp->hxq_buf); - - /* - * Get VCC over which data was sent (may be null if - * VCC has been closed in the meantime) - */ - fvp = hxp->hxq_vcc; - - /* - * Now collect some statistics - */ - if (*hxp->hxq_status & QSTAT_ERROR) { - /* - * CP ran into problems, not much we can do - * other than record the event - */ - fup->fu_pif.pif_oerrors++; - if (fvp) { - vcp = fvp->fv_connvc->cvc_vcc; - vcp->vc_oerrors++; - if (vcp->vc_nif) - ANIF2IFP(vcp->vc_nif)->if_oerrors++; - } - } else { - /* - * Good transmission - */ - int len = XDS_GET_LEN(hxp->hxq_descr->xd_spec); - - fup->fu_pif.pif_opdus++; - fup->fu_pif.pif_obytes += len; - if (fvp) { - vcp = fvp->fv_connvc->cvc_vcc; - vcp->vc_opdus++; - vcp->vc_obytes += len; - if (vcp->vc_nif) { - vcp->vc_nif->nif_obytes += len; - ANIF2IFP(vcp->vc_nif)->if_opackets++; -#if (defined(BSD) && (BSD >= 199103)) - ANIF2IFP(vcp->vc_nif)->if_obytes += len; -#endif - } - } - } - - /* - * Mark this entry free for use and bump head pointer - * to the next entry in the queue - */ - *hxp->hxq_status = QSTAT_FREE; - fup->fu_xmit_head = hxp->hxq_next; - } - - return; -} - - -/* - * Free Transmit Queue Data Structures - * - * Arguments: - * fup pointer to device unit structure - * - * Returns: - * none - */ -void -fore_xmit_free(fup) - Fore_unit *fup; -{ - H_xmit_queue *hxp; - H_dma *sdmap; - KBuffer *m; - int i; - - /* - * Free any transmit buffers left on the queue - */ - if (fup->fu_flags & CUF_INITED) { - while (*fup->fu_xmit_head->hxq_status != QSTAT_FREE) { - - hxp = fup->fu_xmit_head; - - /* - * Release the entry's DMA addresses and buffer chain - */ - for (m = hxp->hxq_buf, sdmap = hxp->hxq_dma; m; - m = KB_NEXT(m), sdmap++) { - caddr_t cp; - - KB_DATASTART(m, cp, caddr_t); - } - KB_FREEALL(hxp->hxq_buf); - - *hxp->hxq_status = QSTAT_FREE; - fup->fu_xmit_head = hxp->hxq_next; - } - } - - /* - * Free the status words - */ - if (fup->fu_xmit_stat) { - atm_dev_free((volatile void *)fup->fu_xmit_stat); - fup->fu_xmit_stat = NULL; - fup->fu_xmit_statd = 0; - } - - /* - * Free the transmit descriptors - */ - hxp = fup->fu_xmit_q; - for (i = 0; i < XMIT_QUELEN; i++, hxp++) { - - /* - * Free the transmit descriptor for this queue entry - */ - if (hxp->hxq_descr_dma) { - hxp->hxq_descr_dma = 0; - } - - if (hxp->hxq_descr) { - atm_dev_free(hxp->hxq_descr); - hxp->hxq_descr = NULL; - } - } - - return; -} - |
