Let's add a test verifying that the channel subsystlem responds to a format 1 transfer in channel ccw with non-zero count properly -- with a channel program check.
Signed-off-by: Halil Pasic <[email protected]> --- ccw_tester.c | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) diff --git a/ccw_tester.c b/ccw_tester.c index b8e632b..6253ae7 100644 --- a/ccw_tester.c +++ b/ccw_tester.c @@ -347,8 +347,73 @@ static ssize_t w_fib_idal_store(struct device *dev, return ret ? ret : count; } +static void tic_setup(struct ccw_test_work *w) +{ + struct ccw_tester_device *tdev; + struct subchannel_id schid; + + tdev = container_of(w, struct ccw_tester_device, work); + ccw_device_get_schid(tdev->cdev, &schid); + w->ret = set_mode_diag(schid, OP_MODE_NOP); + if (w->ret) { + printk(KERN_WARNING "tic_setup ret = %d\n", w->ret); + w->ret = 0; + return; + } + w->private = kzalloc(sizeof(*w->ccw), GFP_DMA | GFP_KERNEL); + + w->ccw->count = 0x0666; /* we are evil */ + w->ccw->cmd_code = CCW_CMD_TIC; + /* hope this won't get used */ + w->ccw->cda = (__u32)(unsigned long) w->private; +} + +static void tic_teardown(struct ccw_test_work *w) +{ + if (w->private) { + idal_buffer_free(w->private); + w->private = NULL; + } + if (w->ret) + printk(KERN_WARNING "tic_teardown ret = %d\n", w->ret); +} + +static bool expect_pgm_chk(struct irb *irb) +{ + if (irb_is_error(irb) + && (scsw_cstat(&irb->scsw) & SCHN_STAT_PROG_CHECK) + && scsw_stctl(&irb->scsw) & SCSW_STCTL_ALERT_STATUS) + return true; + printk(KERN_NOTICE + "expected program check but got none (is_error == %d)\n", + irb_is_error(irb)); + return false; +} + +static void do_tic_test(struct ccw_test_work *w) +{ + /* we have one already set up, fire it */ + do_test_do_io(w); + /* TODO: check for pgm-check */ + ccw_test_assert(expect_pgm_chk(&w->irb), + "expected pgm check for tic with count != 0 fib"); +} + +static ssize_t w_tic_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int ret; + struct ccw_tester_device *tdev = to_mydev(to_ccwdev(dev)); + + ret = queue_ccw_test_work(tdev, + tic_setup, do_tic_test, tic_teardown); + return ret ? ret : count; +} + static DEVICE_ATTR_WO(w_fib); static DEVICE_ATTR_WO(w_fib_idal); +static DEVICE_ATTR_WO(w_tic); static void do_ccw_test_work(struct work_struct *work) { @@ -378,6 +443,7 @@ static int ccw_tester_offline(struct ccw_device *cdev) return 0; device_remove_file(&(cdev->dev), &dev_attr_w_fib); device_remove_file(&(cdev->dev), &dev_attr_w_fib_idal); + device_remove_file(&(cdev->dev), &dev_attr_w_tic); spin_lock(&tdev->lock); tdev->work_pending = true; spin_unlock(&tdev->lock); @@ -416,6 +482,9 @@ static int ccw_tester_online(struct ccw_device *cdev) ret = device_create_file(&(cdev->dev), &dev_attr_w_fib_idal); if (ret) goto out_free; + ret = device_create_file(&(cdev->dev), &dev_attr_w_tic); + if (ret) + goto out_free; return ret; out_free: ccw_tester_offline(cdev); -- 2.13.5
