Correct lun representation during packetized operation.
Uninline some routines that are just too big to be inlined. Add some helper macros for SCB ID collision management. Use a hardware SCB rather than a full SCB for the "next SCB to queue" sentinal. Update for new "high SCBID bit" qoutfifo delivery scheme. If interrupts are disabled on the card, don't bother running our interrupt handler. Our handler was called due to a shared interrupt, and the card's interrupts are explicitly disabled to prevent entry into our interrupt handler.
This commit is contained in:
Justin T. Gibbs
parent
8fdc126111
commit
adcf242ea9
@ -2,7 +2,7 @@
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* Inline routines shareable across OS platforms.
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*
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* Copyright (c) 1994-2001 Justin T. Gibbs.
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* Copyright (c) 2000-2001 Adaptec Inc.
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* Copyright (c) 2000-2002 Adaptec Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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@ -37,7 +37,7 @@
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* $Id: //depot/aic7xxx/aic7xxx/aic79xx_inline.h#29 $
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* $Id: //depot/aic7xxx/aic7xxx/aic79xx_inline.h#34 $
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*
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* $FreeBSD$
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*/
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@ -312,6 +312,10 @@ ahd_setup_scb_common(struct ahd_softc *ahd, struct scb *scb)
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scb->hscb->task_attribute_nonpkt_tag =
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scb->hscb->control & SCB_TAG_TYPE;
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scb->hscb->task_management = 0;
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/*
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* For Rev A short lun workaround.
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*/
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scb->hscb->pkt_long_lun[6] = scb->hscb->lun;
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} else {
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scb->hscb->task_attribute_nonpkt_tag = SCB_GET_TAG(scb);
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}
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@ -461,9 +465,6 @@ static __inline struct ahd_initiator_tinfo *
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char channel, u_int our_id,
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u_int remote_id,
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struct ahd_tmode_tstate **tstate);
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static __inline struct scb*
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ahd_get_scb(struct ahd_softc *ahd);
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static __inline void ahd_free_scb(struct ahd_softc *ahd, struct scb *scb);
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static __inline uint16_t
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ahd_inw(struct ahd_softc *ahd, u_int port);
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static __inline void ahd_outw(struct ahd_softc *ahd, u_int port,
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@ -548,41 +549,11 @@ ahd_fetch_transinfo(struct ahd_softc *ahd, char channel, u_int our_id,
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return (&(*tstate)->transinfo[remote_id]);
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}
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/*
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* Get a free scb. If there are none, see if we can allocate a new SCB.
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*/
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static __inline struct scb *
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ahd_get_scb(struct ahd_softc *ahd)
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{
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struct scb *scb;
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if ((scb = SLIST_FIRST(&ahd->scb_data.free_scbs)) == NULL) {
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ahd_alloc_scbs(ahd);
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scb = SLIST_FIRST(&ahd->scb_data.free_scbs);
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if (scb == NULL)
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return (NULL);
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}
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SLIST_REMOVE_HEAD(&ahd->scb_data.free_scbs, links.sle);
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return (scb);
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}
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/*
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* Return an SCB resource to the free list.
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*/
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static __inline void
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ahd_free_scb(struct ahd_softc *ahd, struct scb *scb)
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{
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/* Clean up for the next user */
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ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = NULL;
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scb->flags = SCB_FREE;
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scb->hscb->control = 0;
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SLIST_INSERT_HEAD(&ahd->scb_data.free_scbs, scb, links.sle);
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/* Notify the OSM that a resource is now available. */
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ahd_platform_scb_free(ahd, scb);
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}
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#define AHD_COPY_COL_IDX(dst, src) \
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do { \
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dst->hscb->scsiid = src->hscb->scsiid; \
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dst->hscb->lun = src->hscb->lun; \
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} while (0)
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static __inline uint16_t
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ahd_inw(struct ahd_softc *ahd, u_int port)
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@ -793,7 +764,7 @@ ahd_swap_with_next_hscb(struct ahd_softc *ahd, struct scb *scb)
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* Our queuing method is a bit tricky. The card
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* knows in advance which HSCB (by address) to download,
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* and we can't disappoint it. To achieve this, the next
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* SCB to download is saved off in ahd->next_queued_scb.
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* HSCB to download is saved off in ahd->next_queued_hscb.
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* When we are called to queue "an arbitrary scb",
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* we copy the contents of the incoming HSCB to the one
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* the sequencer knows about, swap HSCB pointers and
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@ -801,14 +772,14 @@ ahd_swap_with_next_hscb(struct ahd_softc *ahd, struct scb *scb)
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* in the scb_array. This makes sure that we can still
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* locate the correct SCB by SCB_TAG.
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*/
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q_hscb = ahd->next_queued_scb->hscb;
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q_hscb = ahd->next_queued_hscb;
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saved_hscb_busaddr = q_hscb->hscb_busaddr;
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memcpy(q_hscb, scb->hscb, sizeof(*scb->hscb));
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q_hscb->hscb_busaddr = saved_hscb_busaddr;
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q_hscb->next_hscb_busaddr = scb->hscb->hscb_busaddr;
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/* Now swap HSCB pointers. */
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ahd->next_queued_scb->hscb = scb->hscb;
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ahd->next_queued_hscb = scb->hscb;
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scb->hscb = q_hscb;
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/* Now define the mapping from tag to SCB in the scbindex */
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@ -914,7 +885,8 @@ ahd_check_cmdcmpltqueues(struct ahd_softc *ahd)
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ahd_dmamap_sync(ahd, ahd->shared_data_dmat, ahd->shared_data_dmamap,
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/*offset*/ahd->qoutfifonext, /*len*/2,
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BUS_DMASYNC_POSTREAD);
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if (ahd->qoutfifo[ahd->qoutfifonext] != SCB_LIST_NULL_LE)
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if ((ahd->qoutfifo[ahd->qoutfifonext]
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& QOUTFIFO_ENTRY_VALID_LE) == ahd->qoutfifonext_valid_tag)
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retval |= AHD_RUN_QOUTFIFO;
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#ifdef AHD_TARGET_MODE
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if ((ahd->flags & AHD_TARGETROLE) != 0
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@ -939,6 +911,16 @@ ahd_intr(struct ahd_softc *ahd)
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{
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u_int intstat;
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if ((ahd->pause & INTEN) == 0) {
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/*
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* Our interrupt is not enabled on the chip
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* and may be disabled for re-entrancy reasons,
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* so just return. This is likely just a shared
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* interrupt.
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*/
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return;
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}
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/*
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* Instead of directly reading the interrupt status register,
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* infer the cause of the interrupt by checking our in-core
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