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Subject[patch] 2.2.18pre19: ppa 2.05
Alan,

Here is a patch to update the ppa driver in 2.2.x to 2.05. I'm using
it here.

Tim.
*/

--- linux/drivers/scsi/ppa.c.pjc Sat Nov 4 16:48:07 2000
+++ linux/drivers/scsi/ppa.c Sat Nov 4 16:53:13 2000
@@ -299,12 +299,11 @@
unsigned char r;

k = PPA_SPIN_TMO;
- do {
- r = r_str(ppb);
- k--;
- udelay(1);
+ /* Wait for bit 6 and 7 - PJC */
+ for (r = r_str (ppb); ((r & 0xc0)!=0xc0) && (k); k--) {
+ udelay (1);
+ r = r_str (ppb);
}
- while (!(r & 0x80) && (k));

/*
* return some status information.
@@ -653,11 +652,7 @@
(v == WRITE_6) ||
(v == WRITE_10));

- /*
- * We only get here if the drive is ready to comunicate,
- * hence no need for a full ppa_wait.
- */
- r = (r_str(ppb) & 0xf0);
+ r = ppa_wait(host_no); /* Need a ppa_wait() - PJC */

while (r != (unsigned char) 0xf0) {
/*
@@ -695,7 +690,7 @@
}
}
/* Now check to see if the drive is ready to comunicate */
- r = (r_str(ppb) & 0xf0);
+ r = ppa_wait(host_no); /* need ppa_wait() - PJC */
/* If not, drop back down to the scheduler and wait a timer tick */
if (!(r & 0x80))
return 0;
--- linux/drivers/scsi/ppa.h.pjc Sat Nov 4 16:54:11 2000
+++ linux/drivers/scsi/ppa.h Sat Nov 4 16:56:44 2000
@@ -10,7 +10,7 @@
#ifndef _PPA_H
#define _PPA_H

-#define PPA_VERSION "2.03 (for Linux 2.2.x)"
+#define PPA_VERSION "2.05 (for Linux 2.2.x)"

/*
* this driver has been hacked by Matteo Frigo (athena@theory.lcs.mit.edu)
@@ -51,6 +51,13 @@
* CONFIG_SCSI_PPA_HAVE_PEDANTIC => CONFIG_SCSI_IZIP_EPP16
* added CONFIG_SCSI_IZIP_SLOW_CTR option
* [2.03]
+ *
+ * Use ppa_wait() to check for ready AND connected status bits
+ * Add ppa_wait() calls to ppa_completion()
+ * by Peter Cherriman <pjc@ecs.soton.ac.uk> and
+ * Tim Waugh <twaugh@redhat.com>
+ * [2.04]
+ * Fix kernel panic on scsi timeout, 2000-08-18 [2.05]
*/
/* ------ END OF USER CONFIGURABLE PARAMETERS ----- */

@@ -166,6 +173,7 @@
eh_device_reset_handler: NULL, \
eh_bus_reset_handler: ppa_reset, \
eh_host_reset_handler: ppa_reset, \
+ use_new_eh_code: 1, \
bios_param: ppa_biosparam, \
this_id: -1, \
sg_tablesize: SG_ALL, \
-
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