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Pull in fixes similar to those recently committed to the bt driver:

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- For transactions of 0 length, us a non-residual checking CCB type.

 - Preserve command status if our interrupt handler completes a command
   while we are polling for completion in aha_cmd.
This commit is contained in:
Justin T. Gibbs 1998-12-13 00:05:04 +00:00
parent 10fc9d90ce
commit 0aae7eb02e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=41709
1 changed files with 9 additions and 4 deletions
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13
sys/dev/aha/aha.c
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@ -55,7 +55,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: aha.c,v 1.13 1998/11/25 19:12:56 imp Exp $
* $Id: aha.c,v 1.14 1998/12/04 22:54:44 archie Exp $
*/
#include <sys/param.h>
@ -1181,7 +1181,7 @@ ahaexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
bus_dmamap_sync(aha->buffer_dmat, accb->dmamap, op);
} else {
accb->hccb.opcode = INITIATOR_CCB_WRESID;
accb->hccb.opcode = INITIATOR_CCB;
ahautoa24(0, accb->hccb.data_len);
ahautoa24(0, accb->hccb.data_addr);
}
@ -1547,11 +1547,13 @@ aha_cmd(struct aha_softc *aha, aha_op_t opcode, u_int8_t *params,
u_int intstat;
u_int reply_buf_size;
int s;
int cmd_complete;
/* No data returned to start */
reply_buf_size = reply_len;
reply_len = 0;
intstat = 0;
cmd_complete = 0;
aha->command_cmp = 0;
/*
@ -1587,10 +1589,13 @@ aha_cmd(struct aha_softc *aha, aha_op_t opcode, u_int8_t *params,
status = aha_inb(aha, STATUS_REG);
intstat = aha_inb(aha, INTSTAT_REG);
if ((intstat & (INTR_PENDING|CMD_COMPLETE))
== (INTR_PENDING|CMD_COMPLETE))
== (INTR_PENDING|CMD_COMPLETE)) {
cmd_complete = 1;
break;
}
if (aha->command_cmp != 0) {
status = aha->latched_status;
cmd_complete = 1;
break;
}
if ((status & DATAIN_REG_READY) != 0)
@ -1610,7 +1615,7 @@ aha_cmd(struct aha_softc *aha, aha_op_t opcode, u_int8_t *params,
* For all other commands, we wait for any output data
* and the final comand completion interrupt.
*/
while (--cmd_timeout) {
while (cmd_complete == 0 && --cmd_timeout) {
status = aha_inb(aha, STATUS_REG);
intstat = aha_inb(aha, INTSTAT_REG);