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1. Supporting fast sync value displayin latest firmware.

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2. Use restrict round-robin scheme rather than a  agresive one if
   firmware has a this capability.
This commit is contained in:
Atsushi Murai 1995-06-19 13:02:09 +00:00
parent 037b03ba12
commit 4112bc7874
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=9262
1 changed files with 13 additions and 7 deletions
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20
sys/i386/isa/bt742a.c
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@ -12,7 +12,7 @@
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
*
* $Id: bt742a.c,v 1.35 1995/05/11 19:26:16 rgrimes Exp $
* $Id: bt742a.c,v 1.36 1995/05/30 08:01:21 rgrimes Exp $
*/
/*
@ -121,8 +121,8 @@ typedef unsigned long int physaddr;
/* The following command appeared at FirmWare 3.31 */
#define BT_ROUND_ROBIN 0x8f /* Enable/Disable(default) round robin */
#define BT_DISABLE 0x00 /* Parameter value for Disable */
#define BT_ENABLE 0x01 /* Parameter value for Enable */
#define BT_STRICT_ROUND_ROBIN 0x00 /* Parameter value for strict mode */
#define BT_AGRES_ROUND_ROBIN 0x01 /* Parameter value for backword comp */
struct bt_cmd_buf {
u_char byte[16];
@ -334,7 +334,8 @@ struct bt_ext_info {
u_char num_mbx; /* Number of mailbox */
int32 mbx_base; /* mailbox base address */
struct {
u_char resv1:2; /* ??? */
u_char resv1:1; /* ??? */
u_char force:1; /* ON: force sync */
u_char maxsync:1; /* ON: 10MB/s , OFF: 5MB/s */
u_char resv2:2; /* ??? */
u_char sync:1; /* ON: Sync, OFF: async ONLY!! */
@ -1306,6 +1307,11 @@ bt_inquire_setup_information(
* If board has a capbility of Syncrhonouse mode,
* Get a SCSI Synchronous value
*/
if (info->s.force) { /* Assume fast sync capability */
info->s.sync = 1; /* It's appear at 4.25? version */
info->s.maxsync = 1;
}
if ( info->s.sync ) {
bt_cmd(unit, 1, sizeof(sync), 100,
&sync,BT_GET_SYNC_VALUE,sizeof(sync));
@ -1383,10 +1389,10 @@ bt_inquire_setup_information(
* BT_ROUND_ROBIN command amurai@spec.co.jp
*/
if ( bID.firm_revision >= '3' ) {
printf("bt%d: Enabling Round robin scheme\n", unit);
bt_cmd(unit, 1, 0, 0, 0, BT_ROUND_ROBIN, BT_ENABLE);
printf("bt%d: Use a Strict Round robin scheme\n", unit);
bt_cmd(unit, 1, 0, 0, 0, BT_ROUND_ROBIN, BT_STRICT_ROUND_ROBIN);
} else {
printf("bt%d: Not Enabling Round robin scheme\n", unit);
printf("bt%d: Not Use a Round robin scheme\n", unit);
}
}