| aic7xxx.seq (50477) | aic7xxx.seq (51471) |
|---|---|
| 1/* 2 * Adaptec 274x/284x/294x device driver firmware for Linux and FreeBSD. 3 * 4 * Copyright (c) 1994-1999 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 --- 18 unchanged lines hidden (view full) --- 27 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * | 1/* 2 * Adaptec 274x/284x/294x device driver firmware for Linux and FreeBSD. 3 * 4 * Copyright (c) 1994-1999 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 --- 18 unchanged lines hidden (view full) --- 27 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * |
| 35 * $FreeBSD: head/sys/dev/aic7xxx/aic7xxx.seq 50477 1999-08-28 01:08:13Z peter $ | 35 * $FreeBSD: head/sys/dev/aic7xxx/aic7xxx.seq 51471 1999-09-20 18:57:04Z gibbs $ |
| 36 */ 37 38#include <dev/aic7xxx/aic7xxx.reg> 39#include <cam/scsi/scsi_message.h> 40 41/* 42 * A few words on the waiting SCB list: 43 * After starting the selection hardware, we check for reconnecting targets --- 630 unchanged lines hidden (view full) --- 674 /* clear target specific flags */ 675 clr SEQ_FLAGS ret; 676 677/* 678 * If we re-enter the data phase after going through another phase, the 679 * STCNT may have been cleared, so restore it from the residual field. 680 */ 681data_phase_reinit: | 36 */ 37 38#include <dev/aic7xxx/aic7xxx.reg> 39#include <cam/scsi/scsi_message.h> 40 41/* 42 * A few words on the waiting SCB list: 43 * After starting the selection hardware, we check for reconnecting targets --- 630 unchanged lines hidden (view full) --- 674 /* clear target specific flags */ 675 clr SEQ_FLAGS ret; 676 677/* 678 * If we re-enter the data phase after going through another phase, the 679 * STCNT may have been cleared, so restore it from the residual field. 680 */ 681data_phase_reinit: |
| 682 if ((ahc->features & AHC_CMD_CHAN) != 0) { | 682 if ((ahc->features & AHC_ULTRA2) != 0) { 683 /* 684 * The preload circuitry requires us to 685 * reload the address too, so pull it from 686 * the shaddow address. 687 */ 688 bmov HADDR, SHADDR, 4; 689 bmov HCNT, SCB_RESID_DCNT, 3; 690 } else if ((ahc->features & AHC_CMD_CHAN) != 0) { |
| 683 bmov STCNT, SCB_RESID_DCNT, 3; 684 } else { 685 mvi DINDEX, STCNT; 686 mvi SCB_RESID_DCNT call bcopy_3; 687 } 688 and DATA_COUNT_ODD, 0x1, SCB_RESID_DCNT[0]; 689 jmp data_phase_loop; 690 --- 232 unchanged lines hidden (view full) --- 923 mvi INTSTAT,DATA_OVERRUN; 924 jmp ITloop; 925 926ultra2_dmafinish: 927 if ((ahc->features & AHC_ULTRA2) != 0) { 928 test DFCNTRL, DIRECTION jnz ultra2_dmahalt; 929 and DFCNTRL, ~SCSIEN; 930 test DFCNTRL, SCSIEN jnz .; | 691 bmov STCNT, SCB_RESID_DCNT, 3; 692 } else { 693 mvi DINDEX, STCNT; 694 mvi SCB_RESID_DCNT call bcopy_3; 695 } 696 and DATA_COUNT_ODD, 0x1, SCB_RESID_DCNT[0]; 697 jmp data_phase_loop; 698 --- 232 unchanged lines hidden (view full) --- 931 mvi INTSTAT,DATA_OVERRUN; 932 jmp ITloop; 933 934ultra2_dmafinish: 935 if ((ahc->features & AHC_ULTRA2) != 0) { 936 test DFCNTRL, DIRECTION jnz ultra2_dmahalt; 937 and DFCNTRL, ~SCSIEN; 938 test DFCNTRL, SCSIEN jnz .; |
| 939ultra2_dmafifoflush: |
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| 931 or DFCNTRL, FIFOFLUSH; | 940 or DFCNTRL, FIFOFLUSH; |
| 932 test DFSTATUS, FIFOEMP jz . - 1; | 941 /* 942 * The FIFOEMP status bit on the Ultra2 class 943 * of controllers seems to be a bit flaky. 944 * It appears that if the FIFO is full and the 945 * transfer ends with some data in the REQ/ACK 946 * FIFO, FIFOEMP will fall temporarily 947 * as the data is transferred to the PCI bus. 948 * This glitch lasts for fewer than 5 clock cycles, 949 * so we work around the problem by ensuring the 950 * status bit stays false through a full glitch 951 * window. 952 */ 953 test DFSTATUS, FIFOEMP jz ultra2_dmafifoflush; 954 test DFSTATUS, FIFOEMP jz ultra2_dmafifoflush; 955 test DFSTATUS, FIFOEMP jz ultra2_dmafifoflush; 956 test DFSTATUS, FIFOEMP jz ultra2_dmafifoflush; 957 test DFSTATUS, FIFOEMP jz ultra2_dmafifoflush; 958 959ultra2_dmafifoempty: 960 /* Don't clobber an inprogress host data transfer */ 961 test DFSTATUS, MREQPEND jnz ultra2_dmafifoempty; 962 |
| 933ultra2_dmahalt: 934 and DFCNTRL, ~(SCSIEN|HDMAEN); 935 test DFCNTRL, HDMAEN jnz .; 936 ret; 937 } 938 939if ((ahc->flags & AHC_INITIATORMODE) != 0) { 940/* --- 867 unchanged lines hidden --- | 963ultra2_dmahalt: 964 and DFCNTRL, ~(SCSIEN|HDMAEN); 965 test DFCNTRL, HDMAEN jnz .; 966 ret; 967 } 968 969if ((ahc->flags & AHC_INITIATORMODE) != 0) { 970/* --- 867 unchanged lines hidden --- |