diff options
Diffstat (limited to 'drivers/misc/sgi-gru/grukservices.c')
| -rw-r--r-- | drivers/misc/sgi-gru/grukservices.c | 150 |
1 files changed, 135 insertions, 15 deletions
diff --git a/drivers/misc/sgi-gru/grukservices.c b/drivers/misc/sgi-gru/grukservices.c index 9dff33cb72e3..7d7952b27e03 100644 --- a/drivers/misc/sgi-gru/grukservices.c +++ b/drivers/misc/sgi-gru/grukservices.c @@ -846,13 +846,14 @@ EXPORT_SYMBOL_GPL(gru_copy_gpa); /* ------------------- KERNEL QUICKTESTS RUN AT STARTUP ----------------*/ /* Temp - will delete after we gain confidence in the GRU */ -int quicktest(void) +static int quicktest0(unsigned long arg) { unsigned long word0; unsigned long word1; void *cb; void *dsr; unsigned long *p; + int ret = -EIO; if (gru_get_cpu_resources(GRU_CACHE_LINE_BYTES, &cb, &dsr)) return MQE_BUG_NO_RESOURCES; @@ -861,26 +862,148 @@ int quicktest(void) word1 = 0; gru_vload(cb, uv_gpa(&word0), gru_get_tri(dsr), XTYPE_DW, 1, 1, IMA); - if (gru_wait(cb) != CBS_IDLE) - BUG(); + if (gru_wait(cb) != CBS_IDLE) { + printk(KERN_DEBUG "GRU quicktest0: CBR failure 1\n"); + goto done; + } - if (*p != MAGIC) - BUG(); + if (*p != MAGIC) { + printk(KERN_DEBUG "GRU: quicktest0 bad magic 0x%lx\n", *p); + goto done; + } gru_vstore(cb, uv_gpa(&word1), gru_get_tri(dsr), XTYPE_DW, 1, 1, IMA); - if (gru_wait(cb) != CBS_IDLE) - BUG(); - gru_free_cpu_resources(cb, dsr); + if (gru_wait(cb) != CBS_IDLE) { + printk(KERN_DEBUG "GRU quicktest0: CBR failure 2\n"); + goto done; + } if (word0 != word1 || word1 != MAGIC) { - printk - ("GRU quicktest err: found 0x%lx, expected 0x%lx\n", + printk(KERN_DEBUG + "GRU quicktest0 err: found 0x%lx, expected 0x%lx\n", word1, MAGIC); - BUG(); /* ZZZ should not be fatal */ + goto done; } + ret = 0; - return 0; +done: + gru_free_cpu_resources(cb, dsr); + return ret; } +#define ALIGNUP(p, q) ((void *)(((unsigned long)(p) + (q) - 1) & ~(q - 1))) + +static int quicktest1(unsigned long arg) +{ + struct gru_message_queue_desc mqd; + void *p, *mq; + unsigned long *dw; + int i, ret = -EIO; + char mes[GRU_CACHE_LINE_BYTES], *m; + + /* Need 1K cacheline aligned that does not cross page boundary */ + p = kmalloc(4096, 0); + mq = ALIGNUP(p, 1024); + memset(mes, 0xee, sizeof(mes)); + dw = mq; + + gru_create_message_queue(&mqd, mq, 8 * GRU_CACHE_LINE_BYTES, 0, 0, 0); + for (i = 0; i < 6; i++) { + mes[8] = i; + do { + ret = gru_send_message_gpa(&mqd, mes, sizeof(mes)); + } while (ret == MQE_CONGESTION); + if (ret) + break; + } + if (ret != MQE_QUEUE_FULL || i != 4) + goto done; + + for (i = 0; i < 6; i++) { + m = gru_get_next_message(&mqd); + if (!m || m[8] != i) + break; + gru_free_message(&mqd, m); + } + ret = (i == 4) ? 0 : -EIO; + +done: + kfree(p); + return ret; +} + +static int quicktest2(unsigned long arg) +{ + static DECLARE_COMPLETION(cmp); + unsigned long han; + int blade_id = 0; + int numcb = 4; + int ret = 0; + unsigned long *buf; + void *cb0, *cb; + int i, k, istatus, bytes; + + bytes = numcb * 4 * 8; + buf = kmalloc(bytes, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + ret = -EBUSY; + han = gru_reserve_async_resources(blade_id, numcb, 0, &cmp); + if (!han) + goto done; + + gru_lock_async_resource(han, &cb0, NULL); + memset(buf, 0xee, bytes); + for (i = 0; i < numcb; i++) + gru_vset(cb0 + i * GRU_HANDLE_STRIDE, uv_gpa(&buf[i * 4]), 0, + XTYPE_DW, 4, 1, IMA_INTERRUPT); + + ret = 0; + for (k = 0; k < numcb; k++) { + 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; + } + } + BUG_ON(cmp.done); + + gru_unlock_async_resource(han); + gru_release_async_resources(han); +done: + kfree(buf); + return ret; +} + +/* + * Debugging only. User hook for various kernel tests + * of driver & gru. + */ +int gru_ktest(unsigned long arg) +{ + int ret = -EINVAL; + + switch (arg & 0xff) { + case 0: + ret = quicktest0(arg); + break; + case 1: + ret = quicktest1(arg); + break; + case 2: + ret = quicktest2(arg); + break; + } + return ret; + +} int gru_kservices_init(struct gru_state *gru) { @@ -891,9 +1014,6 @@ int gru_kservices_init(struct gru_state *gru) return 0; init_rwsem(&bs->bs_kgts_sema); - - if (gru_options & GRU_QUICKLOOK) - quicktest(); return 0; } |