diff options
Diffstat (limited to 'sys/dev/patm/if_patm.c')
| -rw-r--r-- | sys/dev/patm/if_patm.c | 512 |
1 files changed, 0 insertions, 512 deletions
diff --git a/sys/dev/patm/if_patm.c b/sys/dev/patm/if_patm.c deleted file mode 100644 index a09eeea151ff..000000000000 --- a/sys/dev/patm/if_patm.c +++ /dev/null @@ -1,512 +0,0 @@ -/*- - * Copyright (c) 2003 - * Fraunhofer Institute for Open Communication Systems (FhG Fokus). - * 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR OR CONTRIBUTORS 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. - * - * Author: Hartmut Brandt <harti@freebsd.org> - * - * Driver for IDT77252 based cards like ProSum's. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include "opt_inet.h" -#include "opt_natm.h" - -#include <sys/types.h> -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/malloc.h> -#include <sys/kernel.h> -#include <sys/bus.h> -#include <sys/errno.h> -#include <sys/conf.h> -#include <sys/module.h> -#include <sys/lock.h> -#include <sys/mutex.h> -#include <sys/sysctl.h> -#include <sys/queue.h> -#include <sys/condvar.h> -#include <sys/endian.h> -#include <vm/uma.h> - -#include <sys/sockio.h> -#include <sys/mbuf.h> -#include <sys/socket.h> - -#include <net/if.h> -#include <net/if_var.h> -#include <net/if_media.h> -#include <net/if_atm.h> -#include <net/route.h> -#include <netinet/in.h> -#include <netinet/if_atm.h> - -#include <machine/bus.h> -#include <machine/resource.h> -#include <sys/bus.h> -#include <sys/rman.h> -#include <sys/mbpool.h> - -#include <dev/utopia/utopia.h> -#include <dev/patm/idt77252reg.h> -#include <dev/patm/if_patmvar.h> - -static void patm_tst_init(struct patm_softc *sc); -static void patm_scd_init(struct patm_softc *sc); - -/* - * Start the card. This assumes the mutex to be held - */ -void -patm_initialize(struct patm_softc *sc) -{ - uint32_t cfg; - u_int i; - - patm_debug(sc, ATTACH, "configuring..."); - - /* clear SRAM */ - for (i = 0; i < sc->mmap->sram * 1024; i += 4) - patm_sram_write4(sc, i, 0, 0, 0, 0); - patm_scd_init(sc); - - /* configuration register. Setting NOIDLE makes the timing wrong! */ - cfg = IDT_CFG_TXFIFO9 | IDT_CFG_RXQ512 | PATM_CFG_VPI | - /* IDT_CFG_NOIDLE | */ sc->mmap->rxtab; - if (!(sc->flags & PATM_UNASS)) - cfg |= IDT_CFG_IDLECLP; - patm_nor_write(sc, IDT_NOR_CFG, cfg); - - /* clean all the status queues and the Raw handle */ - memset(sc->tsq, 0, sc->sq_size); - - /* initialize RSQ */ - patm_debug(sc, ATTACH, "RSQ %llx", (unsigned long long)sc->rsq_phy); - patm_nor_write(sc, IDT_NOR_RSQB, sc->rsq_phy); - patm_nor_write(sc, IDT_NOR_RSQT, sc->rsq_phy); - patm_nor_write(sc, IDT_NOR_RSQH, 0); - sc->rsq_last = PATM_RSQ_SIZE - 1; - - /* initialize TSTB */ - patm_nor_write(sc, IDT_NOR_TSTB, sc->mmap->tst1base << 2); - patm_tst_init(sc); - - /* initialize TSQ */ - for (i = 0; i < IDT_TSQ_SIZE; i++) - sc->tsq[i].stamp = htole32(IDT_TSQE_EMPTY); - patm_nor_write(sc, IDT_NOR_TSQB, sc->tsq_phy); - patm_nor_write(sc, IDT_NOR_TSQH, 0); - patm_nor_write(sc, IDT_NOR_TSQT, 0); - sc->tsq_next = sc->tsq; - - /* GP */ -#if BYTE_ORDER == BIG_ENDIAN && 0 - patm_nor_write(sc, IDT_NOR_GP, IDT_GP_BIGE); -#else - patm_nor_write(sc, IDT_NOR_GP, 0); -#endif - - /* VPM */ - patm_nor_write(sc, IDT_NOR_VPM, 0); - - /* RxFIFO */ - patm_nor_write(sc, IDT_NOR_RXFD, - IDT_RXFD(sc->mmap->rxfifo_addr, sc->mmap->rxfifo_code)); - patm_nor_write(sc, IDT_NOR_RXFT, 0); - patm_nor_write(sc, IDT_NOR_RXFH, 0); - - /* RAWHND */ - patm_debug(sc, ATTACH, "RWH %llx", - (unsigned long long)sc->rawhnd_phy); - patm_nor_write(sc, IDT_NOR_RAWHND, sc->rawhnd_phy); - - /* ABRSTD */ - patm_nor_write(sc, IDT_NOR_ABRSTD, - IDT_ABRSTD(sc->mmap->abrstd_addr, sc->mmap->abrstd_code)); - for (i = 0; i < sc->mmap->abrstd_size; i++) - patm_sram_write(sc, sc->mmap->abrstd_addr + i, 0); - patm_nor_write(sc, IDT_NOR_ABRRQ, 0); - patm_nor_write(sc, IDT_NOR_VBRRQ, 0); - - /* rate tables */ - if (sc->flags & PATM_25M) { - for (i = 0; i < patm_rtables_size; i++) - patm_sram_write(sc, sc->mmap->rtables + i, - patm_rtables25[i]); - } else { - for (i = 0; i < patm_rtables_size; i++) - patm_sram_write(sc, sc->mmap->rtables + i, - patm_rtables155[i]); - } - patm_nor_write(sc, IDT_NOR_RTBL, sc->mmap->rtables << 2); - - /* Maximum deficit */ - patm_nor_write(sc, IDT_NOR_MXDFCT, 32 | IDT_MDFCT_LCI | IDT_MDFCT_LNI); - - /* Free buffer queues */ - patm_nor_write(sc, IDT_NOR_FBQP0, 0); - patm_nor_write(sc, IDT_NOR_FBQP1, 0); - patm_nor_write(sc, IDT_NOR_FBQP2, 0); - patm_nor_write(sc, IDT_NOR_FBQP3, 0); - - patm_nor_write(sc, IDT_NOR_FBQWP0, 0); - patm_nor_write(sc, IDT_NOR_FBQWP1, 0); - patm_nor_write(sc, IDT_NOR_FBQWP2, 0); - patm_nor_write(sc, IDT_NOR_FBQWP3, 0); - - patm_nor_write(sc, IDT_NOR_FBQS0, - (SMBUF_THRESHOLD << 28) | - (SMBUF_NI_THRESH << 24) | - (SMBUF_CI_THRESH << 20) | - SMBUF_CELLS); - patm_nor_write(sc, IDT_NOR_FBQS1, - (LMBUF_THRESHOLD << 28) | - (LMBUF_NI_THRESH << 24) | - (LMBUF_CI_THRESH << 20) | - LMBUF_CELLS); - patm_nor_write(sc, IDT_NOR_FBQS2, - (VMBUF_THRESHOLD << 28) | VMBUF_CELLS); - patm_nor_write(sc, IDT_NOR_FBQS3, 0); - - /* make SCD0 for UBR0 */ - if ((sc->scd0 = patm_scd_alloc(sc)) == NULL) { - patm_printf(sc, "cannot create UBR0 SCD\n"); - patm_reset(sc); - return; - } - sc->scd0->q.ifq_maxlen = PATM_DLFT_MAXQ; - - patm_scd_setup(sc, sc->scd0); - patm_tct_setup(sc, sc->scd0, NULL); - - patm_debug(sc, ATTACH, "go..."); - - sc->utopia.flags &= ~UTP_FL_POLL_CARRIER; - sc->ifp->if_drv_flags |= IFF_DRV_RUNNING; - - /* enable interrupts, Tx and Rx paths */ - cfg |= IDT_CFG_RXPTH | IDT_CFG_RXIIMM | IDT_CFG_RAWIE | IDT_CFG_RQFIE | - IDT_CFG_TIMOIE | IDT_CFG_FBIE | IDT_CFG_TXENB | IDT_CFG_TXINT | - IDT_CFG_TXUIE | IDT_CFG_TXSFI | IDT_CFG_PHYIE; - patm_nor_write(sc, IDT_NOR_CFG, cfg); - - for (i = 0; i < sc->mmap->max_conn; i++) - if (sc->vccs[i] != NULL) - patm_load_vc(sc, sc->vccs[i], 1); - - ATMEV_SEND_IFSTATE_CHANGED(IFP2IFATM(sc->ifp), - sc->utopia.carrier == UTP_CARR_OK); -} - -/* - * External callable start function - */ -void -patm_init(void *p) -{ - struct patm_softc *sc = p; - - mtx_lock(&sc->mtx); - patm_stop(sc); - patm_initialize(sc); - mtx_unlock(&sc->mtx); -} - -/* - * Stop the interface - */ -void -patm_stop(struct patm_softc *sc) -{ - u_int i; - struct mbuf *m; - struct patm_txmap *map; - struct patm_scd *scd; - - sc->ifp->if_drv_flags &= ~IFF_DRV_RUNNING; - sc->utopia.flags |= UTP_FL_POLL_CARRIER; - - patm_reset(sc); - - mtx_lock(&sc->tst_lock); - i = sc->tst_state; - sc->tst_state = 0; - callout_stop(&sc->tst_callout); - mtx_unlock(&sc->tst_lock); - - if (i != 0) { - /* this means we are just entering or leaving the timeout. - * wait a little bit. Doing this correctly would be more - * involved */ - DELAY(1000); - } - - /* - * Give any waiters on closing a VCC a chance. They will stop - * to wait if they see that IFF_DRV_RUNNING disappeared. - */ - cv_broadcast(&sc->vcc_cv); - - /* free large buffers */ - patm_debug(sc, ATTACH, "freeing large buffers..."); - for (i = 0; i < sc->lbuf_max; i++) - if (sc->lbufs[i].m != NULL) - patm_lbuf_free(sc, &sc->lbufs[i]); - - /* free small buffers that are on the card */ - patm_debug(sc, ATTACH, "freeing small buffers..."); - mbp_card_free(sc->sbuf_pool); - - /* free aal0 buffers that are on the card */ - patm_debug(sc, ATTACH, "freeing aal0 buffers..."); - mbp_card_free(sc->vbuf_pool); - - /* freeing partial receive chains and reset vcc state */ - for (i = 0; i < sc->mmap->max_conn; i++) { - if (sc->vccs[i] != NULL) { - if (sc->vccs[i]->chain != NULL) { - m_freem(sc->vccs[i]->chain); - sc->vccs[i]->chain = NULL; - sc->vccs[i]->last = NULL; - } - - if (sc->vccs[i]->vflags & (PATM_VCC_RX_CLOSING | - PATM_VCC_TX_CLOSING)) { - uma_zfree(sc->vcc_zone, sc->vccs[i]); - sc->vccs[i] = NULL; - } else { - /* keep */ - sc->vccs[i]->vflags &= ~PATM_VCC_OPEN; - sc->vccs[i]->cps = 0; - sc->vccs[i]->scd = NULL; - } - } - } - - /* stop all active SCDs */ - while ((scd = LIST_FIRST(&sc->scd_list)) != NULL) { - /* free queue packets */ - for (;;) { - _IF_DEQUEUE(&scd->q, m); - if (m == NULL) - break; - m_freem(m); - } - - /* free transmitting packets */ - for (i = 0; i < IDT_TSQE_TAG_SPACE; i++) { - if ((m = scd->on_card[i]) != NULL) { - scd->on_card[i] = 0; - map = m->m_pkthdr.PH_loc.ptr; - - bus_dmamap_unload(sc->tx_tag, map->map); - SLIST_INSERT_HEAD(&sc->tx_maps_free, map, link); - m_freem(m); - } - } - patm_scd_free(sc, scd); - } - sc->scd0 = NULL; - - sc->flags &= ~PATM_CLR; - - /* reset raw cell queue */ - sc->rawh = NULL; - - ATMEV_SEND_IFSTATE_CHANGED(IFP2IFATM(sc->ifp), - sc->utopia.carrier == UTP_CARR_OK); -} - -/* - * Stop the card and reset it - */ -void -patm_reset(struct patm_softc *sc) -{ - - patm_debug(sc, ATTACH, "resetting..."); - - patm_nor_write(sc, IDT_NOR_CFG, IDT_CFG_SWRST); - DELAY(200); - patm_nor_write(sc, IDT_NOR_CFG, 0); - DELAY(200); - - patm_nor_write(sc, IDT_NOR_RSQH, 0); - patm_nor_write(sc, IDT_NOR_TSQH, 0); - - patm_nor_write(sc, IDT_NOR_GP, IDT_GP_PHY_RST); - DELAY(50); - patm_nor_write(sc, IDT_NOR_GP, IDT_GP_EEDO | IDT_GP_EECS); - DELAY(50); -} - -/* - * Initialize the soft TST to contain only ABR scheduling and - * write it to SRAM - */ -static void -patm_tst_init(struct patm_softc *sc) -{ - u_int i; - u_int base, idle; - - base = sc->mmap->tst1base; - idle = sc->mmap->tst1base + sc->mmap->tst_size; - - /* soft */ - for (i = 0; i < sc->mmap->tst_size - 1; i++) - sc->tst_soft[i] = IDT_TST_VBR; - - sc->tst_state = 0; - sc->tst_jump[0] = base + sc->mmap->tst_size - 1; - sc->tst_jump[1] = idle + sc->mmap->tst_size - 1; - sc->tst_base[0] = base; - sc->tst_base[1] = idle; - - /* TST1 */ - for (i = 0; i < sc->mmap->tst_size - 1; i++) - patm_sram_write(sc, base + i, IDT_TST_VBR); - patm_sram_write(sc, sc->tst_jump[0], IDT_TST_BR | (base << 2)); - - /* TST2 */ - for (i = 0; i < sc->mmap->tst_size - 1; i++) - patm_sram_write(sc, idle + i, IDT_TST_VBR); - patm_sram_write(sc, sc->tst_jump[1], IDT_TST_BR | (idle << 2)); - - sc->tst_free = sc->mmap->tst_size - 1; - sc->tst_reserve = sc->tst_free * PATM_TST_RESERVE / 100; - sc->bwrem = IFP2IFATM(sc->ifp)->mib.pcr; -} - -/* - * Initialize the SCDs. This is done by building a list of all free - * SCDs in SRAM. The first word of each potential SCD is used as a - * link to the next free SCD. The list is rooted in softc. - */ -static void -patm_scd_init(struct patm_softc *sc) -{ - u_int s; /* SRAM address of current SCD */ - - sc->scd_free = 0; - for (s = sc->mmap->scd_base; s + 12 <= sc->mmap->tst1base; s += 12) { - patm_sram_write(sc, s, sc->scd_free); - sc->scd_free = s; - } -} - -/* - * allocate an SCQ - */ -struct patm_scd * -patm_scd_alloc(struct patm_softc *sc) -{ - u_int sram, next; /* SRAM address of this and next SCD */ - int error; - void *p; - struct patm_scd *scd; - bus_dmamap_t map; - bus_addr_t phy; - - /* get an SCD from the free list */ - if ((sram = sc->scd_free) == 0) - return (NULL); - next = patm_sram_read(sc, sram); - - /* allocate memory for the queue and our host stuff */ - error = bus_dmamem_alloc(sc->scd_tag, &p, BUS_DMA_NOWAIT, &map); - if (error != 0) - return (NULL); - phy = 0x3ff; - error = bus_dmamap_load(sc->scd_tag, map, p, sizeof(scd->scq), - patm_load_callback, &phy, BUS_DMA_NOWAIT); - if (error != 0) { - bus_dmamem_free(sc->scd_tag, p, map); - return (NULL); - } - KASSERT((phy & 0x1ff) == 0, ("SCD not aligned %lx", (u_long)phy)); - - scd = p; - bzero(scd, sizeof(*scd)); - - scd->sram = sram; - scd->phy = phy; - scd->map = map; - scd->space = IDT_SCQ_SIZE; - scd->last_tag = IDT_TSQE_TAG_SPACE - 1; - scd->q.ifq_maxlen = PATM_TX_IFQLEN; - - /* remove the scd from the free list */ - sc->scd_free = next; - LIST_INSERT_HEAD(&sc->scd_list, scd, link); - - return (scd); -} - -/* - * Free an SCD - */ -void -patm_scd_free(struct patm_softc *sc, struct patm_scd *scd) -{ - - LIST_REMOVE(scd, link); - - /* clear SCD and insert link word */ - patm_sram_write4(sc, scd->sram, sc->scd_free, 0, 0, 0); - patm_sram_write4(sc, scd->sram, 0, 0, 0, 0); - patm_sram_write4(sc, scd->sram, 0, 0, 0, 0); - - /* put on free list */ - sc->scd_free = scd->sram; - - /* free memory */ - bus_dmamap_unload(sc->scd_tag, scd->map); - bus_dmamem_free(sc->scd_tag, scd, scd->map); -} - -/* - * DMA loading helper function. This function handles the loading of - * all one segment DMA maps. The argument is a pointer to a bus_addr_t - * which must contain the desired alignment of the address as a bitmap. - */ -void -patm_load_callback(void *arg, bus_dma_segment_t *segs, int nsegs, int error) -{ - bus_addr_t *phy = arg; - - if (error) - return; - - KASSERT(nsegs == 1, - ("too many segments for DMA: %d", nsegs)); - KASSERT(segs[0].ds_addr <= 0xffffffffUL, - ("phys addr too large %lx", (u_long)segs[0].ds_addr)); - KASSERT((segs[0].ds_addr & *phy) == 0, - ("bad alignment %lx:%lx", (u_long)segs[0].ds_addr, (u_long)*phy)); - - *phy = segs[0].ds_addr; -} |