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gru: add test for gru_copy_gpa

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Improve existing driver self-tests.  Add a new debugging test to the SGI
GRU driver for verifying the global GRU copy function.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jack Steiner
2009-12-15 16:48:09 -08:00
committed by Linus Torvalds
parent b8229bedd1
commit 33f3648342
1 changed files with 39 additions and 9 deletions
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48
drivers/misc/sgi-gru/grukservices.c
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@@ -1004,6 +1004,7 @@ static int quicktest2(unsigned long arg)
int ret = 0; int ret = 0;
unsigned long *buf; unsigned long *buf;
void *cb0, *cb; void *cb0, *cb;
struct gru_control_block_status *gen;
int i, k, istatus, bytes; int i, k, istatus, bytes;
bytes = numcb * 4 * 8; bytes = numcb * 4 * 8;
@@ -1023,20 +1024,30 @@ static int quicktest2(unsigned long arg)
XTYPE_DW, 4, 1, IMA_INTERRUPT); XTYPE_DW, 4, 1, IMA_INTERRUPT);
ret = 0; ret = 0;
for (k = 0; k < numcb; k++) { k = numcb;
do {
gru_wait_async_cbr(han); gru_wait_async_cbr(han);
for (i = 0; i < numcb; i++) { for (i = 0; i < numcb; i++) {
cb = cb0 + i * GRU_HANDLE_STRIDE; cb = cb0 + i * GRU_HANDLE_STRIDE;
istatus = gru_check_status(cb); istatus = gru_check_status(cb);
if (istatus == CBS_ACTIVE) if (istatus != CBS_ACTIVE && istatus != CBS_CALL_OS)
continue; break;
if (istatus == CBS_EXCEPTION)
ret = -EFAULT;
else if (buf[i] || buf[i + 1] || buf[i + 2] ||
buf[i + 3])
ret = -EIO;
} }
} if (i == numcb)
continue;
if (istatus != CBS_IDLE) {
printk(KERN_DEBUG "GRU:%d quicktest2: cb %d, exception\n", smp_processor_id(), i);
ret = -EFAULT;
} else if (buf[4 * i] || buf[4 * i + 1] || buf[4 * i + 2] ||
buf[4 * i + 3]) {
printk(KERN_DEBUG "GRU:%d quicktest2:cb %d, buf 0x%lx, 0x%lx, 0x%lx, 0x%lx\n",
smp_processor_id(), i, buf[4 * i], buf[4 * i + 1], buf[4 * i + 2], buf[4 * i + 3]);
ret = -EIO;
}
k--;
gen = cb;
gen->istatus = CBS_CALL_OS; /* don't handle this CBR again */
} while (k);
BUG_ON(cmp.done); BUG_ON(cmp.done);
gru_unlock_async_resource(han); gru_unlock_async_resource(han);
@@ -1046,6 +1057,22 @@ done:
return ret; return ret;
} }
#define BUFSIZE 200
static int quicktest3(unsigned long arg)
{
char buf1[BUFSIZE], buf2[BUFSIZE];
int ret = 0;
memset(buf2, 0, sizeof(buf2));
memset(buf1, get_cycles() & 255, sizeof(buf1));
gru_copy_gpa(uv_gpa(buf2), uv_gpa(buf1), BUFSIZE);
if (memcmp(buf1, buf2, BUFSIZE)) {
printk(KERN_DEBUG "GRU quicktest3 error\n");
ret = -EIO;
}
return ret;
}
/* /*
* Debugging only. User hook for various kernel tests * Debugging only. User hook for various kernel tests
* of driver & gru. * of driver & gru.
@@ -1064,6 +1091,9 @@ int gru_ktest(unsigned long arg)
case 2: case 2:
ret = quicktest2(arg); ret = quicktest2(arg);
break; break;
case 3:
ret = quicktest3(arg);
break;
case 99: case 99:
ret = gru_free_kernel_contexts(); ret = gru_free_kernel_contexts();
break; break;