| aic7xxx.seq (71717) | aic7xxx.seq (72325) |
|---|---|
| 1/* 2 * Adaptec 274x/284x/294x device driver firmware for Linux and FreeBSD. 3 * 4 * Copyright (c) 1994-2001 Justin Gibbs. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions --- 14 unchanged lines hidden (view full) --- 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * | 1/* 2 * Adaptec 274x/284x/294x device driver firmware for Linux and FreeBSD. 3 * 4 * Copyright (c) 1994-2001 Justin Gibbs. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions --- 14 unchanged lines hidden (view full) --- 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * |
| 31 * $Id: //depot/src/aic7xxx/aic7xxx.seq#16 $ | 31 * $Id: //depot/src/aic7xxx/aic7xxx.seq#19 $ |
| 32 * | 32 * |
| 33 * $FreeBSD: head/sys/dev/aic7xxx/aic7xxx.seq 71717 2001-01-27 20:54:24Z gibbs $ | 33 * $FreeBSD: head/sys/dev/aic7xxx/aic7xxx.seq 72325 2001-02-10 18:04:27Z gibbs $ |
| 34 */ 35 36#include "aic7xxx.reg" 37#include "scsi_message.h" 38 39/* 40 * A few words on the waiting SCB list: 41 * After starting the selection hardware, we check for reconnecting targets --- 855 unchanged lines hidden (view full) --- 897 test SSTAT0, TARGET jnz ultra2_dma_loop; 898 } 899 if ((ahc->flags & AHC_INITIATORROLE) != 0) { 900 test SSTAT1,PHASEMIS jz ultra2_dma_loop; 901 } 902 903ultra2_dmafinish: 904 test DFCNTRL, DIRECTION jnz ultra2_dmafifoempty; | 34 */ 35 36#include "aic7xxx.reg" 37#include "scsi_message.h" 38 39/* 40 * A few words on the waiting SCB list: 41 * After starting the selection hardware, we check for reconnecting targets --- 855 unchanged lines hidden (view full) --- 897 test SSTAT0, TARGET jnz ultra2_dma_loop; 898 } 899 if ((ahc->flags & AHC_INITIATORROLE) != 0) { 900 test SSTAT1,PHASEMIS jz ultra2_dma_loop; 901 } 902 903ultra2_dmafinish: 904 test DFCNTRL, DIRECTION jnz ultra2_dmafifoempty; |
| 905 and DFCNTRL, ~SCSIEN; 906 test DFCNTRL, SCSIEN jnz .; 907 if ((ahc->bugs & AHC_AUTOFLUSH_BUG) != 0) { 908 test DFSTATUS, FIFOEMP jnz ultra2_dmafifoempty; | 905 if ((ahc->features & AHC_DT) == 0) { 906 and DFCNTRL, ~SCSIEN; 907 test DFCNTRL, SCSIEN jnz .; |
| 909 } 910ultra2_dmafifoflush: 911 if ((ahc->bugs & AHC_AUTOFLUSH_BUG) != 0) { 912 /* 913 * On Rev A of the aic7890, the autoflush 914 * features doesn't function correctly. 915 * Perform an explicit manual flush. During 916 * a manual flush, the FIFOEMP bit becomes --- 542 unchanged lines hidden (view full) --- 1459 * it to the QINFIFO and tell us not to post to the QOUTFIFO by setting 1460 * RETURN_1 to SEND_SENSE. 1461 */ 1462 1463/* 1464 * If ATN is raised, we still want to give the target a message. 1465 * Perhaps there was a parity error on this last message byte. 1466 * Either way, the target should take us to message out phase | 908 } 909ultra2_dmafifoflush: 910 if ((ahc->bugs & AHC_AUTOFLUSH_BUG) != 0) { 911 /* 912 * On Rev A of the aic7890, the autoflush 913 * features doesn't function correctly. 914 * Perform an explicit manual flush. During 915 * a manual flush, the FIFOEMP bit becomes --- 542 unchanged lines hidden (view full) --- 1458 * it to the QINFIFO and tell us not to post to the QOUTFIFO by setting 1459 * RETURN_1 to SEND_SENSE. 1460 */ 1461 1462/* 1463 * If ATN is raised, we still want to give the target a message. 1464 * Perhaps there was a parity error on this last message byte. 1465 * Either way, the target should take us to message out phase |
| 1467 * and then attempt to complete the command again. 1468 * XXX - Need a critical section to do this corrctly. Wait until 1469 * we queue completions. | 1466 * and then attempt to complete the command again. We should use a 1467 * critical section here to guard against a timeout triggering 1468 * for this command and setting ATN while we are still processing 1469 * the completion. |
| 1470 test SCSISIGI, ATNI jnz mesgin_done; 1471 */ 1472 1473/* 1474 * See if we attempted to deliver a message but the target ingnored us. 1475 */ 1476 test SCB_CONTROL, MK_MESSAGE jz . + 2; 1477 mvi MKMSG_FAILED call set_seqint; --- 126 unchanged lines hidden (view full) --- 1604mesgin_identify: 1605 /* 1606 * Determine whether a target is using tagged or non-tagged 1607 * transactions by first looking at the transaction stored in 1608 * the busy target array. If there is no untagged transaction 1609 * for this target or the transaction is for a different lun, then 1610 * this must be an untagged transaction. 1611 */ | 1470 test SCSISIGI, ATNI jnz mesgin_done; 1471 */ 1472 1473/* 1474 * See if we attempted to deliver a message but the target ingnored us. 1475 */ 1476 test SCB_CONTROL, MK_MESSAGE jz . + 2; 1477 mvi MKMSG_FAILED call set_seqint; --- 126 unchanged lines hidden (view full) --- 1604mesgin_identify: 1605 /* 1606 * Determine whether a target is using tagged or non-tagged 1607 * transactions by first looking at the transaction stored in 1608 * the busy target array. If there is no untagged transaction 1609 * for this target or the transaction is for a different lun, then 1610 * this must be an untagged transaction. 1611 */ |
| 1612 shr SINDEX, 4, SELID; | 1612 shr SINDEX, 4, SAVED_SCSIID; |
| 1613 and SAVED_LUN, MSG_IDENTIFY_LUNMASK, A; 1614 if ((ahc->flags & AHC_SCB_BTT) != 0) { 1615 add SINDEX, SCB_64_BTT; 1616 mov SCBPTR, SAVED_LUN; 1617 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) { 1618 add NONE, -SCB_64_BTT, SINDEX; 1619 jc . + 2; 1620 mvi INTSTAT, OUT_OF_RANGE; --- 409 unchanged lines hidden (view full) --- 2030 * The PCI module will only issue a PCI 2031 * retry if the data FIFO is empty. If the 2032 * host disconnects in the middle of a 2033 * transfer, we must empty the fifo of all 2034 * available data to force the chip to 2035 * continue the transfer. This does not 2036 * happen for SCSI transfers as the SCSI module 2037 * will drain the FIFO as data is made available. | 1613 and SAVED_LUN, MSG_IDENTIFY_LUNMASK, A; 1614 if ((ahc->flags & AHC_SCB_BTT) != 0) { 1615 add SINDEX, SCB_64_BTT; 1616 mov SCBPTR, SAVED_LUN; 1617 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) { 1618 add NONE, -SCB_64_BTT, SINDEX; 1619 jc . + 2; 1620 mvi INTSTAT, OUT_OF_RANGE; --- 409 unchanged lines hidden (view full) --- 2030 * The PCI module will only issue a PCI 2031 * retry if the data FIFO is empty. If the 2032 * host disconnects in the middle of a 2033 * transfer, we must empty the fifo of all 2034 * available data to force the chip to 2035 * continue the transfer. This does not 2036 * happen for SCSI transfers as the SCSI module 2037 * will drain the FIFO as data is made available. |
| 2038 * When the hang occurs, we know that at least 2039 * 8 bytes are in the FIFO because the PCI | 2038 * When the hang occurs, we know that a multiple 2039 * of 8 bytes are in the FIFO because the PCI |
| 2040 * module has an 8 byte input latch that only 2041 * dumps to the FIFO when HCNT == 0 or the 2042 * latch is full. 2043 */ | 2040 * module has an 8 byte input latch that only 2041 * dumps to the FIFO when HCNT == 0 or the 2042 * latch is full. 2043 */ |
| 2044 mvi A, -24; | 2044 clr A; |
| 2045 /* Wait for some data to arrive. */ 2046dma_scb_hang_fifo: 2047 test DFSTATUS, FIFOEMP jnz dma_scb_hang_fifo; 2048dma_scb_hang_wait: 2049 test DFSTATUS, MREQPEND jnz dma_scb_hang_wait; 2050 test DFSTATUS, HDONE jnz dma_scb_hang_dma_done; 2051 test DFSTATUS, HDONE jnz dma_scb_hang_dma_done; 2052 test DFSTATUS, HDONE jnz dma_scb_hang_dma_done; 2053 /* | 2045 /* Wait for some data to arrive. */ 2046dma_scb_hang_fifo: 2047 test DFSTATUS, FIFOEMP jnz dma_scb_hang_fifo; 2048dma_scb_hang_wait: 2049 test DFSTATUS, MREQPEND jnz dma_scb_hang_wait; 2050 test DFSTATUS, HDONE jnz dma_scb_hang_dma_done; 2051 test DFSTATUS, HDONE jnz dma_scb_hang_dma_done; 2052 test DFSTATUS, HDONE jnz dma_scb_hang_dma_done; 2053 /* |
| 2054 * The PCI no longer intends to perform a PCI 2055 * transaction and HDONE has not come true. | 2054 * The PCI module no longer intends to perform 2055 * a PCI transaction and HDONE has not come true. |
| 2056 * We are hung. Drain the fifo. 2057 */ 2058dma_scb_hang_empty_fifo: | 2056 * We are hung. Drain the fifo. 2057 */ 2058dma_scb_hang_empty_fifo: |
| 2059 call dfdat_in_8; 2060 add A, 8; 2061 add SINDEX, A, HCNT; | |
| 2062 /* | 2059 /* |
| 2063 * The result will be <= 0 (carry set) if at 2064 * least 8 bytes of data have been placed 2065 * into the fifo. | 2060 * Skip lines not yet transfered into the FIFO. |
| 2066 */ | 2061 */ |
| 2067 jc dma_scb_hang_empty_fifo; | 2062 add SINDEX, 7, HCNT; 2063 shr SINDEX, 3; 2064 2065 /* 2066 * Skip lines already copied out of the FIFO. 2067 */ 2068 add A, A, SINDEX; 2069 2070 call dma_scb_hang_dma_drain_fifo; 2071 2072 /* 2073 * Set the lines transferred to all but 2074 * those yet to reach the FIFO. 2075 */ 2076 not SINDEX; 2077 add A, 5, SINDEX; |
| 2068 jmp dma_scb_hang_fifo; 2069dma_scb_hang_dma_done: 2070 and DFCNTRL, ~HDMAEN; 2071 test DFCNTRL, HDMAEN jnz .; | 2078 jmp dma_scb_hang_fifo; 2079dma_scb_hang_dma_done: 2080 and DFCNTRL, ~HDMAEN; 2081 test DFCNTRL, HDMAEN jnz .; |
| 2072 call dfdat_in_8; 2073 add A, 8; 2074 cmp A, 8 jne . - 2; | 2082dma_scb_hang_dma_drain_fifo: 2083 add SEQADDR0, A; |
| 2075 } else { 2076 call dma_finish; | 2084 } else { 2085 call dma_finish; |
| 2077 /* If we were putting the SCB, we are done */ 2078 call dfdat_in_8; 2079 call dfdat_in_8; 2080 call dfdat_in_8; | |
| 2081 } | 2086 } |
| 2087 /* If we were putting the SCB, we are done */ 2088 call dfdat_in_8; 2089 call dfdat_in_8; 2090 call dfdat_in_8; |
|
| 2082dfdat_in_8: 2083 mov DINDIR,DFDAT; 2084dfdat_in_7: 2085 mov DINDIR,DFDAT; 2086 mov DINDIR,DFDAT; 2087 mov DINDIR,DFDAT; 2088 mov DINDIR,DFDAT; 2089 mov DINDIR,DFDAT; --- 76 unchanged lines hidden --- | 2091dfdat_in_8: 2092 mov DINDIR,DFDAT; 2093dfdat_in_7: 2094 mov DINDIR,DFDAT; 2095 mov DINDIR,DFDAT; 2096 mov DINDIR,DFDAT; 2097 mov DINDIR,DFDAT; 2098 mov DINDIR,DFDAT; --- 76 unchanged lines hidden --- |