From 33f3648342dc40f8bd6383a5a1a91c22e06f6b77 Mon Sep 17 00:00:00 2001 From: Jack Steiner Date: Tue, 15 Dec 2009 16:48:09 -0800 Subject: gru: add test for gru_copy_gpa 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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/misc/sgi-gru/grukservices.c | 48 ++++++++++++++++++++++++++++++------- 1 file changed, 39 insertions(+), 9 deletions(-) (limited to 'drivers/misc/sgi-gru') diff --git a/drivers/misc/sgi-gru/grukservices.c b/drivers/misc/sgi-gru/grukservices.c index e0d4b53d1fc..24ec109e61c 100644 --- a/drivers/misc/sgi-gru/grukservices.c +++ b/drivers/misc/sgi-gru/grukservices.c @@ -1004,6 +1004,7 @@ static int quicktest2(unsigned long arg) int ret = 0; unsigned long *buf; void *cb0, *cb; + struct gru_control_block_status *gen; int i, k, istatus, bytes; bytes = numcb * 4 * 8; @@ -1023,20 +1024,30 @@ static int quicktest2(unsigned long arg) XTYPE_DW, 4, 1, IMA_INTERRUPT); ret = 0; - for (k = 0; k < numcb; k++) { + k = numcb; + do { gru_wait_async_cbr(han); for (i = 0; i < numcb; i++) { cb = cb0 + i * GRU_HANDLE_STRIDE; istatus = gru_check_status(cb); - if (istatus == CBS_ACTIVE) - continue; - if (istatus == CBS_EXCEPTION) - ret = -EFAULT; - else if (buf[i] || buf[i + 1] || buf[i + 2] || - buf[i + 3]) - ret = -EIO; + if (istatus != CBS_ACTIVE && istatus != CBS_CALL_OS) + break; } - } + 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); gru_unlock_async_resource(han); @@ -1046,6 +1057,22 @@ done: 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 * of driver & gru. @@ -1064,6 +1091,9 @@ int gru_ktest(unsigned long arg) case 2: ret = quicktest2(arg); break; + case 3: + ret = quicktest3(arg); + break; case 99: ret = gru_free_kernel_contexts(); break; -- cgit v1.2.3