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path: root/drivers/usb/misc/usbtest.c
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-rw-r--r--drivers/usb/misc/usbtest.c2833
1 files changed, 2833 insertions, 0 deletions
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
new file mode 100644
index 000000000..0bbafe795
--- /dev/null
+++ b/drivers/usb/misc/usbtest.c
@@ -0,0 +1,2833 @@
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/scatterlist.h>
+#include <linux/mutex.h>
+#include <linux/timer.h>
+#include <linux/usb.h>
+
+#define SIMPLE_IO_TIMEOUT 10000 /* in milliseconds */
+
+/*-------------------------------------------------------------------------*/
+
+static int override_alt = -1;
+module_param_named(alt, override_alt, int, 0644);
+MODULE_PARM_DESC(alt, ">= 0 to override altsetting selection");
+
+/*-------------------------------------------------------------------------*/
+
+/* FIXME make these public somewhere; usbdevfs.h? */
+struct usbtest_param {
+ /* inputs */
+ unsigned test_num; /* 0..(TEST_CASES-1) */
+ unsigned iterations;
+ unsigned length;
+ unsigned vary;
+ unsigned sglen;
+
+ /* outputs */
+ struct timeval duration;
+};
+#define USBTEST_REQUEST _IOWR('U', 100, struct usbtest_param)
+
+/*-------------------------------------------------------------------------*/
+
+#define GENERIC /* let probe() bind using module params */
+
+/* Some devices that can be used for testing will have "real" drivers.
+ * Entries for those need to be enabled here by hand, after disabling
+ * that "real" driver.
+ */
+//#define IBOT2 /* grab iBOT2 webcams */
+//#define KEYSPAN_19Qi /* grab un-renumerated serial adapter */
+
+/*-------------------------------------------------------------------------*/
+
+struct usbtest_info {
+ const char *name;
+ u8 ep_in; /* bulk/intr source */
+ u8 ep_out; /* bulk/intr sink */
+ unsigned autoconf:1;
+ unsigned ctrl_out:1;
+ unsigned iso:1; /* try iso in/out */
+ unsigned intr:1; /* try interrupt in/out */
+ int alt;
+};
+
+/* this is accessed only through usbfs ioctl calls.
+ * one ioctl to issue a test ... one lock per device.
+ * tests create other threads if they need them.
+ * urbs and buffers are allocated dynamically,
+ * and data generated deterministically.
+ */
+struct usbtest_dev {
+ struct usb_interface *intf;
+ struct usbtest_info *info;
+ int in_pipe;
+ int out_pipe;
+ int in_iso_pipe;
+ int out_iso_pipe;
+ int in_int_pipe;
+ int out_int_pipe;
+ struct usb_endpoint_descriptor *iso_in, *iso_out;
+ struct usb_endpoint_descriptor *int_in, *int_out;
+ struct mutex lock;
+
+#define TBUF_SIZE 256
+ u8 *buf;
+};
+
+static struct usb_device *testdev_to_usbdev(struct usbtest_dev *test)
+{
+ return interface_to_usbdev(test->intf);
+}
+
+/* set up all urbs so they can be used with either bulk or interrupt */
+#define INTERRUPT_RATE 1 /* msec/transfer */
+
+#define ERROR(tdev, fmt, args...) \
+ dev_err(&(tdev)->intf->dev , fmt , ## args)
+#define WARNING(tdev, fmt, args...) \
+ dev_warn(&(tdev)->intf->dev , fmt , ## args)
+
+#define GUARD_BYTE 0xA5
+
+/*-------------------------------------------------------------------------*/
+
+static int
+get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf)
+{
+ int tmp;
+ struct usb_host_interface *alt;
+ struct usb_host_endpoint *in, *out;
+ struct usb_host_endpoint *iso_in, *iso_out;
+ struct usb_host_endpoint *int_in, *int_out;
+ struct usb_device *udev;
+
+ for (tmp = 0; tmp < intf->num_altsetting; tmp++) {
+ unsigned ep;
+
+ in = out = NULL;
+ iso_in = iso_out = NULL;
+ int_in = int_out = NULL;
+ alt = intf->altsetting + tmp;
+
+ if (override_alt >= 0 &&
+ override_alt != alt->desc.bAlternateSetting)
+ continue;
+
+ /* take the first altsetting with in-bulk + out-bulk;
+ * ignore other endpoints and altsettings.
+ */
+ for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
+ struct usb_host_endpoint *e;
+
+ e = alt->endpoint + ep;
+ switch (usb_endpoint_type(&e->desc)) {
+ case USB_ENDPOINT_XFER_BULK:
+ break;
+ case USB_ENDPOINT_XFER_INT:
+ if (dev->info->intr)
+ goto try_intr;
+ case USB_ENDPOINT_XFER_ISOC:
+ if (dev->info->iso)
+ goto try_iso;
+ /* FALLTHROUGH */
+ default:
+ continue;
+ }
+ if (usb_endpoint_dir_in(&e->desc)) {
+ if (!in)
+ in = e;
+ } else {
+ if (!out)
+ out = e;
+ }
+ continue;
+try_intr:
+ if (usb_endpoint_dir_in(&e->desc)) {
+ if (!int_in)
+ int_in = e;
+ } else {
+ if (!int_out)
+ int_out = e;
+ }
+ continue;
+try_iso:
+ if (usb_endpoint_dir_in(&e->desc)) {
+ if (!iso_in)
+ iso_in = e;
+ } else {
+ if (!iso_out)
+ iso_out = e;
+ }
+ }
+ if ((in && out) || iso_in || iso_out || int_in || int_out)
+ goto found;
+ }
+ return -EINVAL;
+
+found:
+ udev = testdev_to_usbdev(dev);
+ dev->info->alt = alt->desc.bAlternateSetting;
+ if (alt->desc.bAlternateSetting != 0) {
+ tmp = usb_set_interface(udev,
+ alt->desc.bInterfaceNumber,
+ alt->desc.bAlternateSetting);
+ if (tmp < 0)
+ return tmp;
+ }
+
+ if (in) {
+ dev->in_pipe = usb_rcvbulkpipe(udev,
+ in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+ dev->out_pipe = usb_sndbulkpipe(udev,
+ out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+ }
+ if (iso_in) {
+ dev->iso_in = &iso_in->desc;
+ dev->in_iso_pipe = usb_rcvisocpipe(udev,
+ iso_in->desc.bEndpointAddress
+ & USB_ENDPOINT_NUMBER_MASK);
+ }
+
+ if (iso_out) {
+ dev->iso_out = &iso_out->desc;
+ dev->out_iso_pipe = usb_sndisocpipe(udev,
+ iso_out->desc.bEndpointAddress
+ & USB_ENDPOINT_NUMBER_MASK);
+ }
+
+ if (int_in) {
+ dev->int_in = &int_in->desc;
+ dev->in_int_pipe = usb_rcvintpipe(udev,
+ int_in->desc.bEndpointAddress
+ & USB_ENDPOINT_NUMBER_MASK);
+ }
+
+ if (int_out) {
+ dev->int_out = &int_out->desc;
+ dev->out_int_pipe = usb_sndintpipe(udev,
+ int_out->desc.bEndpointAddress
+ & USB_ENDPOINT_NUMBER_MASK);
+ }
+ return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* Support for testing basic non-queued I/O streams.
+ *
+ * These just package urbs as requests that can be easily canceled.
+ * Each urb's data buffer is dynamically allocated; callers can fill
+ * them with non-zero test data (or test for it) when appropriate.
+ */
+
+static void simple_callback(struct urb *urb)
+{
+ complete(urb->context);
+}
+
+static struct urb *usbtest_alloc_urb(
+ struct usb_device *udev,
+ int pipe,
+ unsigned long bytes,
+ unsigned transfer_flags,
+ unsigned offset,
+ u8 bInterval)
+{
+ struct urb *urb;
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb)
+ return urb;
+
+ if (bInterval)
+ usb_fill_int_urb(urb, udev, pipe, NULL, bytes, simple_callback,
+ NULL, bInterval);
+ else
+ usb_fill_bulk_urb(urb, udev, pipe, NULL, bytes, simple_callback,
+ NULL);
+
+ urb->interval = (udev->speed == USB_SPEED_HIGH)
+ ? (INTERRUPT_RATE << 3)
+ : INTERRUPT_RATE;
+ urb->transfer_flags = transfer_flags;
+ if (usb_pipein(pipe))
+ urb->transfer_flags |= URB_SHORT_NOT_OK;
+
+ if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
+ urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset,
+ GFP_KERNEL, &urb->transfer_dma);
+ else
+ urb->transfer_buffer = kmalloc(bytes + offset, GFP_KERNEL);
+
+ if (!urb->transfer_buffer) {
+ usb_free_urb(urb);
+ return NULL;
+ }
+
+ /* To test unaligned transfers add an offset and fill the
+ unused memory with a guard value */
+ if (offset) {
+ memset(urb->transfer_buffer, GUARD_BYTE, offset);
+ urb->transfer_buffer += offset;
+ if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
+ urb->transfer_dma += offset;
+ }
+
+ /* For inbound transfers use guard byte so that test fails if
+ data not correctly copied */
+ memset(urb->transfer_buffer,
+ usb_pipein(urb->pipe) ? GUARD_BYTE : 0,
+ bytes);
+ return urb;
+}
+
+static struct urb *simple_alloc_urb(
+ struct usb_device *udev,
+ int pipe,
+ unsigned long bytes,
+ u8 bInterval)
+{
+ return usbtest_alloc_urb(udev, pipe, bytes, URB_NO_TRANSFER_DMA_MAP, 0,
+ bInterval);
+}
+
+static unsigned pattern;
+static unsigned mod_pattern;
+module_param_named(pattern, mod_pattern, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(mod_pattern, "i/o pattern (0 == zeroes)");
+
+static inline void simple_fill_buf(struct urb *urb)
+{
+ unsigned i;
+ u8 *buf = urb->transfer_buffer;
+ unsigned len = urb->transfer_buffer_length;
+
+ switch (pattern) {
+ default:
+ /* FALLTHROUGH */
+ case 0:
+ memset(buf, 0, len);
+ break;
+ case 1: /* mod63 */
+ for (i = 0; i < len; i++)
+ *buf++ = (u8) (i % 63);
+ break;
+ }
+}
+
+static inline unsigned long buffer_offset(void *buf)
+{
+ return (unsigned long)buf & (ARCH_KMALLOC_MINALIGN - 1);
+}
+
+static int check_guard_bytes(struct usbtest_dev *tdev, struct urb *urb)
+{
+ u8 *buf = urb->transfer_buffer;
+ u8 *guard = buf - buffer_offset(buf);
+ unsigned i;
+
+ for (i = 0; guard < buf; i++, guard++) {
+ if (*guard != GUARD_BYTE) {
+ ERROR(tdev, "guard byte[%d] %d (not %d)\n",
+ i, *guard, GUARD_BYTE);
+ return -EINVAL;
+ }
+ }
+ return 0;
+}
+
+static int simple_check_buf(struct usbtest_dev *tdev, struct urb *urb)
+{
+ unsigned i;
+ u8 expected;
+ u8 *buf = urb->transfer_buffer;
+ unsigned len = urb->actual_length;
+
+ int ret = check_guard_bytes(tdev, urb);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < len; i++, buf++) {
+ switch (pattern) {
+ /* all-zeroes has no synchronization issues */
+ case 0:
+ expected = 0;
+ break;
+ /* mod63 stays in sync with short-terminated transfers,
+ * or otherwise when host and gadget agree on how large
+ * each usb transfer request should be. resync is done
+ * with set_interface or set_config.
+ */
+ case 1: /* mod63 */
+ expected = i % 63;
+ break;
+ /* always fail unsupported patterns */
+ default:
+ expected = !*buf;
+ break;
+ }
+ if (*buf == expected)
+ continue;
+ ERROR(tdev, "buf[%d] = %d (not %d)\n", i, *buf, expected);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static void simple_free_urb(struct urb *urb)
+{
+ unsigned long offset = buffer_offset(urb->transfer_buffer);
+
+ if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
+ usb_free_coherent(
+ urb->dev,
+ urb->transfer_buffer_length + offset,
+ urb->transfer_buffer - offset,
+ urb->transfer_dma - offset);
+ else
+ kfree(urb->transfer_buffer - offset);
+ usb_free_urb(urb);
+}
+
+static int simple_io(
+ struct usbtest_dev *tdev,
+ struct urb *urb,
+ int iterations,
+ int vary,
+ int expected,
+ const char *label
+)
+{
+ struct usb_device *udev = urb->dev;
+ int max = urb->transfer_buffer_length;
+ struct completion completion;
+ int retval = 0;
+ unsigned long expire;
+
+ urb->context = &completion;
+ while (retval == 0 && iterations-- > 0) {
+ init_completion(&completion);
+ if (usb_pipeout(urb->pipe)) {
+ simple_fill_buf(urb);
+ urb->transfer_flags |= URB_ZERO_PACKET;
+ }
+ retval = usb_submit_urb(urb, GFP_KERNEL);
+ if (retval != 0)
+ break;
+
+ expire = msecs_to_jiffies(SIMPLE_IO_TIMEOUT);
+ if (!wait_for_completion_timeout(&completion, expire)) {
+ usb_kill_urb(urb);
+ retval = (urb->status == -ENOENT ?
+ -ETIMEDOUT : urb->status);
+ } else {
+ retval = urb->status;
+ }
+
+ urb->dev = udev;
+ if (retval == 0 && usb_pipein(urb->pipe))
+ retval = simple_check_buf(tdev, urb);
+
+ if (vary) {
+ int len = urb->transfer_buffer_length;
+
+ len += vary;
+ len %= max;
+ if (len == 0)
+ len = (vary < max) ? vary : max;
+ urb->transfer_buffer_length = len;
+ }
+
+ /* FIXME if endpoint halted, clear halt (and log) */
+ }
+ urb->transfer_buffer_length = max;
+
+ if (expected != retval)
+ dev_err(&udev->dev,
+ "%s failed, iterations left %d, status %d (not %d)\n",
+ label, iterations, retval, expected);
+ return retval;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* We use scatterlist primitives to test queued I/O.
+ * Yes, this also tests the scatterlist primitives.
+ */
+
+static void free_sglist(struct scatterlist *sg, int nents)
+{
+ unsigned i;
+
+ if (!sg)
+ return;
+ for (i = 0; i < nents; i++) {
+ if (!sg_page(&sg[i]))
+ continue;
+ kfree(sg_virt(&sg[i]));
+ }
+ kfree(sg);
+}
+
+static struct scatterlist *
+alloc_sglist(int nents, int max, int vary)
+{
+ struct scatterlist *sg;
+ unsigned i;
+ unsigned size = max;
+
+ if (max == 0)
+ return NULL;
+
+ sg = kmalloc_array(nents, sizeof(*sg), GFP_KERNEL);
+ if (!sg)
+ return NULL;
+ sg_init_table(sg, nents);
+
+ for (i = 0; i < nents; i++) {
+ char *buf;
+ unsigned j;
+
+ buf = kzalloc(size, GFP_KERNEL);
+ if (!buf) {
+ free_sglist(sg, i);
+ return NULL;
+ }
+
+ /* kmalloc pages are always physically contiguous! */
+ sg_set_buf(&sg[i], buf, size);
+
+ switch (pattern) {
+ case 0:
+ /* already zeroed */
+ break;
+ case 1:
+ for (j = 0; j < size; j++)
+ *buf++ = (u8) (j % 63);
+ break;
+ }
+
+ if (vary) {
+ size += vary;
+ size %= max;
+ if (size == 0)
+ size = (vary < max) ? vary : max;
+ }
+ }
+
+ return sg;
+}
+
+static void sg_timeout(unsigned long _req)
+{
+ struct usb_sg_request *req = (struct usb_sg_request *) _req;
+
+ req->status = -ETIMEDOUT;
+ usb_sg_cancel(req);
+}
+
+static int perform_sglist(
+ struct usbtest_dev *tdev,
+ unsigned iterations,
+ int pipe,
+ struct usb_sg_request *req,
+ struct scatterlist *sg,
+ int nents
+)
+{
+ struct usb_device *udev = testdev_to_usbdev(tdev);
+ int retval = 0;
+ struct timer_list sg_timer;
+
+ setup_timer_on_stack(&sg_timer, sg_timeout, (unsigned long) req);
+
+ while (retval == 0 && iterations-- > 0) {
+ retval = usb_sg_init(req, udev, pipe,
+ (udev->speed == USB_SPEED_HIGH)
+ ? (INTERRUPT_RATE << 3)
+ : INTERRUPT_RATE,
+ sg, nents, 0, GFP_KERNEL);
+
+ if (retval)
+ break;
+ mod_timer(&sg_timer, jiffies +
+ msecs_to_jiffies(SIMPLE_IO_TIMEOUT));
+ usb_sg_wait(req);
+ del_timer_sync(&sg_timer);
+ retval = req->status;
+
+ /* FIXME check resulting data pattern */
+
+ /* FIXME if endpoint halted, clear halt (and log) */
+ }
+
+ /* FIXME for unlink or fault handling tests, don't report
+ * failure if retval is as we expected ...
+ */
+ if (retval)
+ ERROR(tdev, "perform_sglist failed, "
+ "iterations left %d, status %d\n",
+ iterations, retval);
+ return retval;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* unqueued control message testing
+ *
+ * there's a nice set of device functional requirements in chapter 9 of the
+ * usb 2.0 spec, which we can apply to ANY device, even ones that don't use
+ * special test firmware.
+ *
+ * we know the device is configured (or suspended) by the time it's visible
+ * through usbfs. we can't change that, so we won't test enumeration (which
+ * worked 'well enough' to get here, this time), power management (ditto),
+ * or remote wakeup (which needs human interaction).
+ */
+
+static unsigned realworld = 1;
+module_param(realworld, uint, 0);
+MODULE_PARM_DESC(realworld, "clear to demand stricter spec compliance");
+
+static int get_altsetting(struct usbtest_dev *dev)
+{
+ struct usb_interface *iface = dev->intf;
+ struct usb_device *udev = interface_to_usbdev(iface);
+ int retval;
+
+ retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+ USB_REQ_GET_INTERFACE, USB_DIR_IN|USB_RECIP_INTERFACE,
+ 0, iface->altsetting[0].desc.bInterfaceNumber,
+ dev->buf, 1, USB_CTRL_GET_TIMEOUT);
+ switch (retval) {
+ case 1:
+ return dev->buf[0];
+ case 0:
+ retval = -ERANGE;
+ /* FALLTHROUGH */
+ default:
+ return retval;
+ }
+}
+
+static int set_altsetting(struct usbtest_dev *dev, int alternate)
+{
+ struct usb_interface *iface = dev->intf;
+ struct usb_device *udev;
+
+ if (alternate < 0 || alternate >= 256)
+ return -EINVAL;
+
+ udev = interface_to_usbdev(iface);
+ return usb_set_interface(udev,
+ iface->altsetting[0].desc.bInterfaceNumber,
+ alternate);
+}
+
+static int is_good_config(struct usbtest_dev *tdev, int len)
+{
+ struct usb_config_descriptor *config;
+
+ if (len < sizeof(*config))
+ return 0;
+ config = (struct usb_config_descriptor *) tdev->buf;
+
+ switch (config->bDescriptorType) {
+ case USB_DT_CONFIG:
+ case USB_DT_OTHER_SPEED_CONFIG:
+ if (config->bLength != 9) {
+ ERROR(tdev, "bogus config descriptor length\n");
+ return 0;
+ }
+ /* this bit 'must be 1' but often isn't */
+ if (!realworld && !(config->bmAttributes & 0x80)) {
+ ERROR(tdev, "high bit of config attributes not set\n");
+ return 0;
+ }
+ if (config->bmAttributes & 0x1f) { /* reserved == 0 */
+ ERROR(tdev, "reserved config bits set\n");
+ return 0;
+ }
+ break;
+ default:
+ return 0;
+ }
+
+ if (le16_to_cpu(config->wTotalLength) == len) /* read it all */
+ return 1;
+ if (le16_to_cpu(config->wTotalLength) >= TBUF_SIZE) /* max partial read */
+ return 1;
+ ERROR(tdev, "bogus config descriptor read size\n");
+ return 0;
+}
+
+static int is_good_ext(struct usbtest_dev *tdev, u8 *buf)
+{
+ struct usb_ext_cap_descriptor *ext;
+ u32 attr;
+
+ ext = (struct usb_ext_cap_descriptor *) buf;
+
+ if (ext->bLength != USB_DT_USB_EXT_CAP_SIZE) {
+ ERROR(tdev, "bogus usb 2.0 extension descriptor length\n");
+ return 0;
+ }
+
+ attr = le32_to_cpu(ext->bmAttributes);
+ /* bits[1:15] is used and others are reserved */
+ if (attr & ~0xfffe) { /* reserved == 0 */
+ ERROR(tdev, "reserved bits set\n");
+ return 0;
+ }
+
+ return 1;
+}
+
+static int is_good_ss_cap(struct usbtest_dev *tdev, u8 *buf)
+{
+ struct usb_ss_cap_descriptor *ss;
+
+ ss = (struct usb_ss_cap_descriptor *) buf;
+
+ if (ss->bLength != USB_DT_USB_SS_CAP_SIZE) {
+ ERROR(tdev, "bogus superspeed device capability descriptor length\n");
+ return 0;
+ }
+
+ /*
+ * only bit[1] of bmAttributes is used for LTM and others are
+ * reserved
+ */
+ if (ss->bmAttributes & ~0x02) { /* reserved == 0 */
+ ERROR(tdev, "reserved bits set in bmAttributes\n");
+ return 0;
+ }
+
+ /* bits[0:3] of wSpeedSupported is used and others are reserved */
+ if (le16_to_cpu(ss->wSpeedSupported) & ~0x0f) { /* reserved == 0 */
+ ERROR(tdev, "reserved bits set in wSpeedSupported\n");
+ return 0;
+ }
+
+ return 1;
+}
+
+static int is_good_con_id(struct usbtest_dev *tdev, u8 *buf)
+{
+ struct usb_ss_container_id_descriptor *con_id;
+
+ con_id = (struct usb_ss_container_id_descriptor *) buf;
+
+ if (con_id->bLength != USB_DT_USB_SS_CONTN_ID_SIZE) {
+ ERROR(tdev, "bogus container id descriptor length\n");
+ return 0;
+ }
+
+ if (con_id->bReserved) { /* reserved == 0 */
+ ERROR(tdev, "reserved bits set\n");
+ return 0;
+ }
+
+ return 1;
+}
+
+/* sanity test for standard requests working with usb_control_mesg() and some
+ * of the utility functions which use it.
+ *
+ * this doesn't test how endpoint halts behave or data toggles get set, since
+ * we won't do I/O to bulk/interrupt endpoints here (which is how to change
+ * halt or toggle). toggle testing is impractical without support from hcds.
+ *
+ * this avoids failing devices linux would normally work with, by not testing
+ * config/altsetting operations for devices that only support their defaults.
+ * such devices rarely support those needless operations.
+ *
+ * NOTE that since this is a sanity test, it's not examining boundary cases
+ * to see if usbcore, hcd, and device all behave right. such testing would
+ * involve varied read sizes and other operation sequences.
+ */
+static int ch9_postconfig(struct usbtest_dev *dev)
+{
+ struct usb_interface *iface = dev->intf;
+ struct usb_device *udev = interface_to_usbdev(iface);
+ int i, alt, retval;
+
+ /* [9.2.3] if there's more than one altsetting, we need to be able to
+ * set and get each one. mostly trusts the descriptors from usbcore.
+ */
+ for (i = 0; i < iface->num_altsetting; i++) {
+
+ /* 9.2.3 constrains the range here */
+ alt = iface->altsetting[i].desc.bAlternateSetting;
+ if (alt < 0 || alt >= iface->num_altsetting) {
+ dev_err(&iface->dev,
+ "invalid alt [%d].bAltSetting = %d\n",
+ i, alt);
+ }
+
+ /* [real world] get/set unimplemented if there's only one */
+ if (realworld && iface->num_altsetting == 1)
+ continue;
+
+ /* [9.4.10] set_interface */
+ retval = set_altsetting(dev, alt);
+ if (retval) {
+ dev_err(&iface->dev, "can't set_interface = %d, %d\n",
+ alt, retval);
+ return retval;
+ }
+
+ /* [9.4.4] get_interface always works */
+ retval = get_altsetting(dev);
+ if (retval != alt) {
+ dev_err(&iface->dev, "get alt should be %d, was %d\n",
+ alt, retval);
+ return (retval < 0) ? retval : -EDOM;
+ }
+
+ }
+
+ /* [real world] get_config unimplemented if there's only one */
+ if (!realworld || udev->descriptor.bNumConfigurations != 1) {
+ int expected = udev->actconfig->desc.bConfigurationValue;
+
+ /* [9.4.2] get_configuration always works
+ * ... although some cheap devices (like one TI Hub I've got)
+ * won't return config descriptors except before set_config.
+ */
+ retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+ USB_REQ_GET_CONFIGURATION,
+ USB_DIR_IN | USB_RECIP_DEVICE,
+ 0, 0, dev->buf, 1, USB_CTRL_GET_TIMEOUT);
+ if (retval != 1 || dev->buf[0] != expected) {
+ dev_err(&iface->dev, "get config --> %d %d (1 %d)\n",
+ retval, dev->buf[0], expected);
+ return (retval < 0) ? retval : -EDOM;
+ }
+ }
+
+ /* there's always [9.4.3] a device descriptor [9.6.1] */
+ retval = usb_get_descriptor(udev, USB_DT_DEVICE, 0,
+ dev->buf, sizeof(udev->descriptor));
+ if (retval != sizeof(udev->descriptor)) {
+ dev_err(&iface->dev, "dev descriptor --> %d\n", retval);
+ return (retval < 0) ? retval : -EDOM;
+ }
+
+ /*
+ * there's always [9.4.3] a bos device descriptor [9.6.2] in USB
+ * 3.0 spec
+ */
+ if (le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0210) {
+ struct usb_bos_descriptor *bos = NULL;
+ struct usb_dev_cap_header *header = NULL;
+ unsigned total, num, length;
+ u8 *buf;
+
+ retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
+ sizeof(*udev->bos->desc));
+ if (retval != sizeof(*udev->bos->desc)) {
+ dev_err(&iface->dev, "bos descriptor --> %d\n", retval);
+ return (retval < 0) ? retval : -EDOM;
+ }
+
+ bos = (struct usb_bos_descriptor *)dev->buf;
+ total = le16_to_cpu(bos->wTotalLength);
+ num = bos->bNumDeviceCaps;
+
+ if (total > TBUF_SIZE)
+ total = TBUF_SIZE;
+
+ /*
+ * get generic device-level capability descriptors [9.6.2]
+ * in USB 3.0 spec
+ */
+ retval = usb_get_descriptor(udev, USB_DT_BOS, 0, dev->buf,
+ total);
+ if (retval != total) {
+ dev_err(&iface->dev, "bos descriptor set --> %d\n",
+ retval);
+ return (retval < 0) ? retval : -EDOM;
+ }
+
+ length = sizeof(*udev->bos->desc);
+ buf = dev->buf;
+ for (i = 0; i < num; i++) {
+ buf += length;
+ if (buf + sizeof(struct usb_dev_cap_header) >
+ dev->buf + total)
+ break;
+
+ header = (struct usb_dev_cap_header *)buf;
+ length = header->bLength;
+
+ if (header->bDescriptorType !=
+ USB_DT_DEVICE_CAPABILITY) {
+ dev_warn(&udev->dev, "not device capability descriptor, skip\n");
+ continue;
+ }
+
+ switch (header->bDevCapabilityType) {
+ case USB_CAP_TYPE_EXT:
+ if (buf + USB_DT_USB_EXT_CAP_SIZE >
+ dev->buf + total ||
+ !is_good_ext(dev, buf)) {
+ dev_err(&iface->dev, "bogus usb 2.0 extension descriptor\n");
+ return -EDOM;
+ }
+ break;
+ case USB_SS_CAP_TYPE:
+ if (buf + USB_DT_USB_SS_CAP_SIZE >
+ dev->buf + total ||
+ !is_good_ss_cap(dev, buf)) {
+ dev_err(&iface->dev, "bogus superspeed device capability descriptor\n");
+ return -EDOM;
+ }
+ break;
+ case CONTAINER_ID_TYPE:
+ if (buf + USB_DT_USB_SS_CONTN_ID_SIZE >
+ dev->buf + total ||
+ !is_good_con_id(dev, buf)) {
+ dev_err(&iface->dev, "bogus container id descriptor\n");
+ return -EDOM;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ }
+
+ /* there's always [9.4.3] at least one config descriptor [9.6.3] */
+ for (i = 0; i < udev->descriptor.bNumConfigurations; i++) {
+ retval = usb_get_descriptor(udev, USB_DT_CONFIG, i,
+ dev->buf, TBUF_SIZE);
+ if (!is_good_config(dev, retval)) {
+ dev_err(&iface->dev,
+ "config [%d] descriptor --> %d\n",
+ i, retval);
+ return (retval < 0) ? retval : -EDOM;
+ }
+
+ /* FIXME cross-checking udev->config[i] to make sure usbcore
+ * parsed it right (etc) would be good testing paranoia
+ */
+ }
+
+ /* and sometimes [9.2.6.6] speed dependent descriptors */
+ if (le16_to_cpu(udev->descriptor.bcdUSB) == 0x0200) {
+ struct usb_qualifier_descriptor *d = NULL;
+
+ /* device qualifier [9.6.2] */
+ retval = usb_get_descriptor(udev,
+ USB_DT_DEVICE_QUALIFIER, 0, dev->buf,
+ sizeof(struct usb_qualifier_descriptor));
+ if (retval == -EPIPE) {
+ if (udev->speed == USB_SPEED_HIGH) {
+ dev_err(&iface->dev,
+ "hs dev qualifier --> %d\n",
+ retval);
+ return (retval < 0) ? retval : -EDOM;
+ }
+ /* usb2.0 but not high-speed capable; fine */
+ } else if (retval != sizeof(struct usb_qualifier_descriptor)) {
+ dev_err(&iface->dev, "dev qualifier --> %d\n", retval);
+ return (retval < 0) ? retval : -EDOM;
+ } else
+ d = (struct usb_qualifier_descriptor *) dev->buf;
+
+ /* might not have [9.6.2] any other-speed configs [9.6.4] */
+ if (d) {
+ unsigned max = d->bNumConfigurations;
+ for (i = 0; i < max; i++) {
+ retval = usb_get_descriptor(udev,
+ USB_DT_OTHER_SPEED_CONFIG, i,
+ dev->buf, TBUF_SIZE);
+ if (!is_good_config(dev, retval)) {
+ dev_err(&iface->dev,
+ "other speed config --> %d\n",
+ retval);
+ return (retval < 0) ? retval : -EDOM;
+ }
+ }
+ }
+ }
+ /* FIXME fetch strings from at least the device descriptor */
+
+ /* [9.4.5] get_status always works */
+ retval = usb_get_status(udev, USB_RECIP_DEVICE, 0, dev->buf);
+ if (retval) {
+ dev_err(&iface->dev, "get dev status --> %d\n", retval);
+ return retval;
+ }
+
+ /* FIXME configuration.bmAttributes says if we could try to set/clear
+ * the device's remote wakeup feature ... if we can, test that here
+ */
+
+ retval = usb_get_status(udev, USB_RECIP_INTERFACE,
+ iface->altsetting[0].desc.bInterfaceNumber, dev->buf);
+ if (retval) {
+ dev_err(&iface->dev, "get interface status --> %d\n", retval);
+ return retval;
+ }
+ /* FIXME get status for each endpoint in the interface */
+
+ return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* use ch9 requests to test whether:
+ * (a) queues work for control, keeping N subtests queued and
+ * active (auto-resubmit) for M loops through the queue.
+ * (b) protocol stalls (control-only) will autorecover.
+ * it's not like bulk/intr; no halt clearing.
+ * (c) short control reads are reported and handled.
+ * (d) queues are always processed in-order
+ */
+
+struct ctrl_ctx {
+ spinlock_t lock;
+ struct usbtest_dev *dev;
+ struct completion complete;
+ unsigned count;
+ unsigned pending;
+ int status;
+ struct urb **urb;
+ struct usbtest_param *param;
+ int last;
+};
+
+#define NUM_SUBCASES 16 /* how many test subcases here? */
+
+struct subcase {
+ struct usb_ctrlrequest setup;
+ int number;
+ int expected;
+};
+
+static void ctrl_complete(struct urb *urb)
+{
+ struct ctrl_ctx *ctx = urb->context;
+ struct usb_ctrlrequest *reqp;
+ struct subcase *subcase;
+ int status = urb->status;
+
+ reqp = (struct usb_ctrlrequest *)urb->setup_packet;
+ subcase = container_of(reqp, struct subcase, setup);
+
+ spin_lock(&ctx->lock);
+ ctx->count--;
+ ctx->pending--;
+
+ /* queue must transfer and complete in fifo order, unless
+ * usb_unlink_urb() is used to unlink something not at the
+ * physical queue head (not tested).
+ */
+ if (subcase->number > 0) {
+ if ((subcase->number - ctx->last) != 1) {
+ ERROR(ctx->dev,
+ "subcase %d completed out of order, last %d\n",
+ subcase->number, ctx->last);
+ status = -EDOM;
+ ctx->last = subcase->number;
+ goto error;
+ }
+ }
+ ctx->last = subcase->number;
+
+ /* succeed or fault in only one way? */
+ if (status == subcase->expected)
+ status = 0;
+
+ /* async unlink for cleanup? */
+ else if (status != -ECONNRESET) {
+
+ /* some faults are allowed, not required */
+ if (subcase->expected > 0 && (
+ ((status == -subcase->expected /* happened */
+ || status == 0)))) /* didn't */
+ status = 0;
+ /* sometimes more than one fault is allowed */
+ else if (subcase->number == 12 && status == -EPIPE)
+ status = 0;
+ else
+ ERROR(ctx->dev, "subtest %d error, status %d\n",
+ subcase->number, status);
+ }
+
+ /* unexpected status codes mean errors; ideally, in hardware */
+ if (status) {
+error:
+ if (ctx->status == 0) {
+ int i;
+
+ ctx->status = status;
+ ERROR(ctx->dev, "control queue %02x.%02x, err %d, "
+ "%d left, subcase %d, len %d/%d\n",
+ reqp->bRequestType, reqp->bRequest,
+ status, ctx->count, subcase->number,
+ urb->actual_length,
+ urb->transfer_buffer_length);
+
+ /* FIXME this "unlink everything" exit route should
+ * be a separate test case.
+ */
+
+ /* unlink whatever's still pending */
+ for (i = 1; i < ctx->param->sglen; i++) {
+ struct urb *u = ctx->urb[
+ (i + subcase->number)
+ % ctx->param->sglen];
+
+ if (u == urb || !u->dev)
+ continue;
+ spin_unlock(&ctx->lock);
+ status = usb_unlink_urb(u);
+ spin_lock(&ctx->lock);
+ switch (status) {
+ case -EINPROGRESS:
+ case -EBUSY:
+ case -EIDRM:
+ continue;
+ default:
+ ERROR(ctx->dev, "urb unlink --> %d\n",
+ status);
+ }
+ }
+ status = ctx->status;
+ }
+ }
+
+ /* resubmit if we need to, else mark this as done */
+ if ((status == 0) && (ctx->pending < ctx->count)) {
+ status = usb_submit_urb(urb, GFP_ATOMIC);
+ if (status != 0) {
+ ERROR(ctx->dev,
+ "can't resubmit ctrl %02x.%02x, err %d\n",
+ reqp->bRequestType, reqp->bRequest, status);
+ urb->dev = NULL;
+ } else
+ ctx->pending++;
+ } else
+ urb->dev = NULL;
+
+ /* signal completion when nothing's queued */
+ if (ctx->pending == 0)
+ complete(&ctx->complete);
+ spin_unlock(&ctx->lock);
+}
+
+static int
+test_ctrl_queue(struct usbtest_dev *dev, struct usbtest_param *param)
+{
+ struct usb_device *udev = testdev_to_usbdev(dev);
+ struct urb **urb;
+ struct ctrl_ctx context;
+ int i;
+
+ if (param->sglen == 0 || param->iterations > UINT_MAX / param->sglen)
+ return -EOPNOTSUPP;
+
+ spin_lock_init(&context.lock);
+ context.dev = dev;
+ init_completion(&context.complete);
+ context.count = param->sglen * param->iterations;
+ context.pending = 0;
+ context.status = -ENOMEM;
+ context.param = param;
+ context.last = -1;
+
+ /* allocate and init the urbs we'll queue.
+ * as with bulk/intr sglists, sglen is the queue depth; it also
+ * controls which subtests run (more tests than sglen) or rerun.
+ */
+ urb = kcalloc(param->sglen, sizeof(struct urb *), GFP_KERNEL);
+ if (!urb)
+ return -ENOMEM;
+ for (i = 0; i < param->sglen; i++) {
+ int pipe = usb_rcvctrlpipe(udev, 0);
+ unsigned len;
+ struct urb *u;
+ struct usb_ctrlrequest req;
+ struct subcase *reqp;
+
+ /* sign of this variable means:
+ * -: tested code must return this (negative) error code
+ * +: tested code may return this (negative too) error code
+ */
+ int expected = 0;
+
+ /* requests here are mostly expected to succeed on any
+ * device, but some are chosen to trigger protocol stalls
+ * or short reads.
+ */
+ memset(&req, 0, sizeof(req));
+ req.bRequest = USB_REQ_GET_DESCRIPTOR;
+ req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
+
+ switch (i % NUM_SUBCASES) {
+ case 0: /* get device descriptor */
+ req.wValue = cpu_to_le16(USB_DT_DEVICE << 8);
+ len = sizeof(struct usb_device_descriptor);
+ break;
+ case 1: /* get first config descriptor (only) */
+ req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
+ len = sizeof(struct usb_config_descriptor);
+ break;
+ case 2: /* get altsetting (OFTEN STALLS) */
+ req.bRequest = USB_REQ_GET_INTERFACE;
+ req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
+ /* index = 0 means first interface */
+ len = 1;
+ expected = EPIPE;
+ break;
+ case 3: /* get interface status */
+ req.bRequest = USB_REQ_GET_STATUS;
+ req.bRequestType = USB_DIR_IN|USB_RECIP_INTERFACE;
+ /* interface 0 */
+ len = 2;
+ break;
+ case 4: /* get device status */
+ req.bRequest = USB_REQ_GET_STATUS;
+ req.bRequestType = USB_DIR_IN|USB_RECIP_DEVICE;
+ len = 2;
+ break;
+ case 5: /* get device qualifier (MAY STALL) */
+ req.wValue = cpu_to_le16 (USB_DT_DEVICE_QUALIFIER << 8);
+ len = sizeof(struct usb_qualifier_descriptor);
+ if (udev->speed != USB_SPEED_HIGH)
+ expected = EPIPE;
+ break;
+ case 6: /* get first config descriptor, plus interface */
+ req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
+ len = sizeof(struct usb_config_descriptor);
+ len += sizeof(struct usb_interface_descriptor);
+ break;
+ case 7: /* get interface descriptor (ALWAYS STALLS) */
+ req.wValue = cpu_to_le16 (USB_DT_INTERFACE << 8);
+ /* interface == 0 */
+ len = sizeof(struct usb_interface_descriptor);
+ expected = -EPIPE;
+ break;
+ /* NOTE: two consecutive stalls in the queue here.
+ * that tests fault recovery a bit more aggressively. */
+ case 8: /* clear endpoint halt (MAY STALL) */
+ req.bRequest = USB_REQ_CLEAR_FEATURE;
+ req.bRequestType = USB_RECIP_ENDPOINT;
+ /* wValue 0 == ep halt */
+ /* wIndex 0 == ep0 (shouldn't halt!) */
+ len = 0;
+ pipe = usb_sndctrlpipe(udev, 0);
+ expected = EPIPE;
+ break;
+ case 9: /* get endpoint status */
+ req.bRequest = USB_REQ_GET_STATUS;
+ req.bRequestType = USB_DIR_IN|USB_RECIP_ENDPOINT;
+ /* endpoint 0 */
+ len = 2;
+ break;
+ case 10: /* trigger short read (EREMOTEIO) */
+ req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
+ len = 1024;
+ expected = -EREMOTEIO;
+ break;
+ /* NOTE: two consecutive _different_ faults in the queue. */
+ case 11: /* get endpoint descriptor (ALWAYS STALLS) */
+ req.wValue = cpu_to_le16(USB_DT_ENDPOINT << 8);
+ /* endpoint == 0 */
+ len = sizeof(struct usb_interface_descriptor);
+ expected = EPIPE;
+ break;
+ /* NOTE: sometimes even a third fault in the queue! */
+ case 12: /* get string 0 descriptor (MAY STALL) */
+ req.wValue = cpu_to_le16(USB_DT_STRING << 8);
+ /* string == 0, for language IDs */
+ len = sizeof(struct usb_interface_descriptor);
+ /* may succeed when > 4 languages */
+ expected = EREMOTEIO; /* or EPIPE, if no strings */
+ break;
+ case 13: /* short read, resembling case 10 */
+ req.wValue = cpu_to_le16((USB_DT_CONFIG << 8) | 0);
+ /* last data packet "should" be DATA1, not DATA0 */
+ if (udev->speed == USB_SPEED_SUPER)
+ len = 1024 - 512;
+ else
+ len = 1024 - udev->descriptor.bMaxPacketSize0;
+ expected = -EREMOTEIO;
+ break;
+ case 14: /* short read; try to fill the last packet */
+ req.wValue = cpu_to_le16((USB_DT_DEVICE << 8) | 0);
+ /* device descriptor size == 18 bytes */
+ len = udev->descriptor.bMaxPacketSize0;
+ if (udev->speed == USB_SPEED_SUPER)
+ len = 512;
+ switch (len) {
+ case 8:
+ len = 24;
+ break;
+ case 16:
+ len = 32;
+ break;
+ }
+ expected = -EREMOTEIO;
+ break;
+ case 15:
+ req.wValue = cpu_to_le16(USB_DT_BOS << 8);
+ if (udev->bos)
+ len = le16_to_cpu(udev->bos->desc->wTotalLength);
+ else
+ len = sizeof(struct usb_bos_descriptor);
+ if (le16_to_cpu(udev->descriptor.bcdUSB) < 0x0201)
+ expected = -EPIPE;
+ break;
+ default:
+ ERROR(dev, "bogus number of ctrl queue testcases!\n");
+ context.status = -EINVAL;
+ goto cleanup;
+ }
+ req.wLength = cpu_to_le16(len);
+ urb[i] = u = simple_alloc_urb(udev, pipe, len, 0);
+ if (!u)
+ goto cleanup;
+
+ reqp = kmalloc(sizeof(*reqp), GFP_KERNEL);
+ if (!reqp)
+ goto cleanup;
+ reqp->setup = req;
+ reqp->number = i % NUM_SUBCASES;
+ reqp->expected = expected;
+ u->setup_packet = (char *) &reqp->setup;
+
+ u->context = &context;
+ u->complete = ctrl_complete;
+ }
+
+ /* queue the urbs */
+ context.urb = urb;
+ spin_lock_irq(&context.lock);
+ for (i = 0; i < param->sglen; i++) {
+ context.status = usb_submit_urb(urb[i], GFP_ATOMIC);
+ if (context.status != 0) {
+ ERROR(dev, "can't submit urb[%d], status %d\n",
+ i, context.status);
+ context.count = context.pending;
+ break;
+ }
+ context.pending++;
+ }
+ spin_unlock_irq(&context.lock);
+
+ /* FIXME set timer and time out; provide a disconnect hook */
+
+ /* wait for the last one to complete */
+ if (context.pending > 0)
+ wait_for_completion(&context.complete);
+
+cleanup:
+ for (i = 0; i < param->sglen; i++) {
+ if (!urb[i])
+ continue;
+ urb[i]->dev = udev;
+ kfree(urb[i]->setup_packet);
+ simple_free_urb(urb[i]);
+ }
+ kfree(urb);
+ return context.status;
+}
+#undef NUM_SUBCASES
+
+
+/*-------------------------------------------------------------------------*/
+
+static void unlink1_callback(struct urb *urb)
+{
+ int status = urb->status;
+
+ /* we "know" -EPIPE (stall) never happens */
+ if (!status)
+ status = usb_submit_urb(urb, GFP_ATOMIC);
+ if (status) {
+ urb->status = status;
+ complete(urb->context);
+ }
+}
+
+static int unlink1(struct usbtest_dev *dev, int pipe, int size, int async)
+{
+ struct urb *urb;
+ struct completion completion;
+ int retval = 0;
+
+ init_completion(&completion);
+ urb = simple_alloc_urb(testdev_to_usbdev(dev), pipe, size, 0);
+ if (!urb)
+ return -ENOMEM;
+ urb->context = &completion;
+ urb->complete = unlink1_callback;
+
+ if (usb_pipeout(urb->pipe)) {
+ simple_fill_buf(urb);
+ urb->transfer_flags |= URB_ZERO_PACKET;
+ }
+
+ /* keep the endpoint busy. there are lots of hc/hcd-internal
+ * states, and testing should get to all of them over time.
+ *
+ * FIXME want additional tests for when endpoint is STALLing
+ * due to errors, or is just NAKing requests.
+ */
+ retval = usb_submit_urb(urb, GFP_KERNEL);
+ if (retval != 0) {
+ dev_err(&dev->intf->dev, "submit fail %d\n", retval);
+ return retval;
+ }
+
+ /* unlinking that should always work. variable delay tests more
+ * hcd states and code paths, even with little other system load.
+ */
+ msleep(jiffies % (2 * INTERRUPT_RATE));
+ if (async) {
+ while (!completion_done(&completion)) {
+ retval = usb_unlink_urb(urb);
+
+ if (retval == 0 && usb_pipein(urb->pipe))
+ retval = simple_check_buf(dev, urb);
+
+ switch (retval) {
+ case -EBUSY:
+ case -EIDRM:
+ /* we can't unlink urbs while they're completing
+ * or if they've completed, and we haven't
+ * resubmitted. "normal" drivers would prevent
+ * resubmission, but since we're testing unlink
+ * paths, we can't.
+ */
+ ERROR(dev, "unlink retry\n");
+ continue;
+ case 0:
+ case -EINPROGRESS:
+ break;
+
+ default:
+ dev_err(&dev->intf->dev,
+ "unlink fail %d\n", retval);
+ return retval;
+ }
+
+ break;
+ }
+ } else
+ usb_kill_urb(urb);
+
+ wait_for_completion(&completion);
+ retval = urb->status;
+ simple_free_urb(urb);
+
+ if (async)
+ return (retval == -ECONNRESET) ? 0 : retval - 1000;
+ else
+ return (retval == -ENOENT || retval == -EPERM) ?
+ 0 : retval - 2000;
+}
+
+static int unlink_simple(struct usbtest_dev *dev, int pipe, int len)
+{
+ int retval = 0;
+
+ /* test sync and async paths */
+ retval = unlink1(dev, pipe, len, 1);
+ if (!retval)
+ retval = unlink1(dev, pipe, len, 0);
+ return retval;
+}
+
+/*-------------------------------------------------------------------------*/
+
+struct queued_ctx {
+ struct completion complete;
+ atomic_t pending;
+ unsigned num;
+ int status;
+ struct urb **urbs;
+};
+
+static void unlink_queued_callback(struct urb *urb)
+{
+ int status = urb->status;
+ struct queued_ctx *ctx = urb->context;
+
+ if (ctx->status)
+ goto done;
+ if (urb == ctx->urbs[ctx->num - 4] || urb == ctx->urbs[ctx->num - 2]) {
+ if (status == -ECONNRESET)
+ goto done;
+ /* What error should we report if the URB completed normally? */
+ }
+ if (status != 0)
+ ctx->status = status;
+
+ done:
+ if (atomic_dec_and_test(&ctx->pending))
+ complete(&ctx->complete);
+}
+
+static int unlink_queued(struct usbtest_dev *dev, int pipe, unsigned num,
+ unsigned size)
+{
+ struct queued_ctx ctx;
+ struct usb_device *udev = testdev_to_usbdev(dev);
+ void *buf;
+ dma_addr_t buf_dma;
+ int i;
+ int retval = -ENOMEM;
+
+ init_completion(&ctx.complete);
+ atomic_set(&ctx.pending, 1); /* One more than the actual value */
+ ctx.num = num;
+ ctx.status = 0;
+
+ buf = usb_alloc_coherent(udev, size, GFP_KERNEL, &buf_dma);
+ if (!buf)
+ return retval;
+ memset(buf, 0, size);
+
+ /* Allocate and init the urbs we'll queue */
+ ctx.urbs = kcalloc(num, sizeof(struct urb *), GFP_KERNEL);
+ if (!ctx.urbs)
+ goto free_buf;
+ for (i = 0; i < num; i++) {
+ ctx.urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
+ if (!ctx.urbs[i])
+ goto free_urbs;
+ usb_fill_bulk_urb(ctx.urbs[i], udev, pipe, buf, size,
+ unlink_queued_callback, &ctx);
+ ctx.urbs[i]->transfer_dma = buf_dma;
+ ctx.urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
+
+ if (usb_pipeout(ctx.urbs[i]->pipe)) {
+ simple_fill_buf(ctx.urbs[i]);
+ ctx.urbs[i]->transfer_flags |= URB_ZERO_PACKET;
+ }
+ }
+
+ /* Submit all the URBs and then unlink URBs num - 4 and num - 2. */
+ for (i = 0; i < num; i++) {
+ atomic_inc(&ctx.pending);
+ retval = usb_submit_urb(ctx.urbs[i], GFP_KERNEL);
+ if (retval != 0) {
+ dev_err(&dev->intf->dev, "submit urbs[%d] fail %d\n",
+ i, retval);
+ atomic_dec(&ctx.pending);
+ ctx.status = retval;
+ break;
+ }
+ }
+ if (i == num) {
+ usb_unlink_urb(ctx.urbs[num - 4]);
+ usb_unlink_urb(ctx.urbs[num - 2]);
+ } else {
+ while (--i >= 0)
+ usb_unlink_urb(ctx.urbs[i]);
+ }
+
+ if (atomic_dec_and_test(&ctx.pending)) /* The extra count */
+ complete(&ctx.complete);
+ wait_for_completion(&ctx.complete);
+ retval = ctx.status;
+
+ free_urbs:
+ for (i = 0; i < num; i++)
+ usb_free_urb(ctx.urbs[i]);
+ kfree(ctx.urbs);
+ free_buf:
+ usb_free_coherent(udev, size, buf, buf_dma);
+ return retval;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int verify_not_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)
+{
+ int retval;
+ u16 status;
+
+ /* shouldn't look or act halted */
+ retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);
+ if (retval < 0) {
+ ERROR(tdev, "ep %02x couldn't get no-halt status, %d\n",
+ ep, retval);
+ return retval;
+ }
+ if (status != 0) {
+ ERROR(tdev, "ep %02x bogus status: %04x != 0\n", ep, status);
+ return -EINVAL;
+ }
+ retval = simple_io(tdev, urb, 1, 0, 0, __func__);
+ if (retval != 0)
+ return -EINVAL;
+ return 0;
+}
+
+static int verify_halted(struct usbtest_dev *tdev, int ep, struct urb *urb)
+{
+ int retval;
+ u16 status;
+
+ /* should look and act halted */
+ retval = usb_get_status(urb->dev, USB_RECIP_ENDPOINT, ep, &status);
+ if (retval < 0) {
+ ERROR(tdev, "ep %02x couldn't get halt status, %d\n",
+ ep, retval);
+ return retval;
+ }
+ if (status != 1) {
+ ERROR(tdev, "ep %02x bogus status: %04x != 1\n", ep, status);
+ return -EINVAL;
+ }
+ retval = simple_io(tdev, urb, 1, 0, -EPIPE, __func__);
+ if (retval != -EPIPE)
+ return -EINVAL;
+ retval = simple_io(tdev, urb, 1, 0, -EPIPE, "verify_still_halted");
+ if (retval != -EPIPE)
+ return -EINVAL;
+ return 0;
+}
+
+static int test_halt(struct usbtest_dev *tdev, int ep, struct urb *urb)
+{
+ int retval;
+
+ /* shouldn't look or act halted now */
+ retval = verify_not_halted(tdev, ep, urb);
+ if (retval < 0)
+ return retval;
+
+ /* set halt (protocol test only), verify it worked */
+ retval = usb_control_msg(urb->dev, usb_sndctrlpipe(urb->dev, 0),
+ USB_REQ_SET_FEATURE, USB_RECIP_ENDPOINT,
+ USB_ENDPOINT_HALT, ep,
+ NULL, 0, USB_CTRL_SET_TIMEOUT);
+ if (retval < 0) {
+ ERROR(tdev, "ep %02x couldn't set halt, %d\n", ep, retval);
+ return retval;
+ }
+ retval = verify_halted(tdev, ep, urb);
+ if (retval < 0) {
+ int ret;
+
+ /* clear halt anyways, else further tests will fail */
+ ret = usb_clear_halt(urb->dev, urb->pipe);
+ if (ret)
+ ERROR(tdev, "ep %02x couldn't clear halt, %d\n",
+ ep, ret);
+
+ return retval;
+ }
+
+ /* clear halt (tests API + protocol), verify it worked */
+ retval = usb_clear_halt(urb->dev, urb->pipe);
+ if (retval < 0) {
+ ERROR(tdev, "ep %02x couldn't clear halt, %d\n", ep, retval);
+ return retval;
+ }
+ retval = verify_not_halted(tdev, ep, urb);
+ if (retval < 0)
+ return retval;
+
+ /* NOTE: could also verify SET_INTERFACE clear halts ... */
+
+ return 0;
+}
+
+static int halt_simple(struct usbtest_dev *dev)
+{
+ int ep;
+ int retval = 0;
+ struct urb *urb;
+ struct usb_device *udev = testdev_to_usbdev(dev);
+
+ if (udev->speed == USB_SPEED_SUPER)
+ urb = simple_alloc_urb(udev, 0, 1024, 0);
+ else
+ urb = simple_alloc_urb(udev, 0, 512, 0);
+ if (urb == NULL)
+ return -ENOMEM;
+
+ if (dev->in_pipe) {
+ ep = usb_pipeendpoint(dev->in_pipe) | USB_DIR_IN;
+ urb->pipe = dev->in_pipe;
+ retval = test_halt(dev, ep, urb);
+ if (retval < 0)
+ goto done;
+ }
+
+ if (dev->out_pipe) {
+ ep = usb_pipeendpoint(dev->out_pipe);
+ urb->pipe = dev->out_pipe;
+ retval = test_halt(dev, ep, urb);
+ }
+done:
+ simple_free_urb(urb);
+ return retval;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* Control OUT tests use the vendor control requests from Intel's
+ * USB 2.0 compliance test device: write a buffer, read it back.
+ *
+ * Intel's spec only _requires_ that it work for one packet, which
+ * is pretty weak. Some HCDs place limits here; most devices will
+ * need to be able to handle more than one OUT data packet. We'll
+ * try whatever we're told to try.
+ */
+static int ctrl_out(struct usbtest_dev *dev,
+ unsigned count, unsigned length, unsigned vary, unsigned offset)
+{
+ unsigned i, j, len;
+ int retval;
+ u8 *buf;
+ char *what = "?";
+ struct usb_device *udev;
+
+ if (length < 1 || length > 0xffff || vary >= length)
+ return -EINVAL;
+
+ buf = kmalloc(length + offset, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ buf += offset;
+ udev = testdev_to_usbdev(dev);
+ len = length;
+ retval = 0;
+
+ /* NOTE: hardware might well act differently if we pushed it
+ * with lots back-to-back queued requests.
+ */
+ for (i = 0; i < count; i++) {
+ /* write patterned data */
+ for (j = 0; j < len; j++)
+ buf[j] = i + j;
+ retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+ 0x5b, USB_DIR_OUT|USB_TYPE_VENDOR,
+ 0, 0, buf, len, USB_CTRL_SET_TIMEOUT);
+ if (retval != len) {
+ what = "write";
+ if (retval >= 0) {
+ ERROR(dev, "ctrl_out, wlen %d (expected %d)\n",
+ retval, len);
+ retval = -EBADMSG;
+ }
+ break;
+ }
+
+ /* read it back -- assuming nothing intervened!! */
+ retval = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+ 0x5c, USB_DIR_IN|USB_TYPE_VENDOR,
+ 0, 0, buf, len, USB_CTRL_GET_TIMEOUT);
+ if (retval != len) {
+ what = "read";
+ if (retval >= 0) {
+ ERROR(dev, "ctrl_out, rlen %d (expected %d)\n",
+ retval, len);
+ retval = -EBADMSG;
+ }
+ break;
+ }
+
+ /* fail if we can't verify */
+ for (j = 0; j < len; j++) {
+ if (buf[j] != (u8) (i + j)) {
+ ERROR(dev, "ctrl_out, byte %d is %d not %d\n",
+ j, buf[j], (u8) i + j);
+ retval = -EBADMSG;
+ break;
+ }
+ }
+ if (retval < 0) {
+ what = "verify";
+ break;
+ }
+
+ len += vary;
+
+ /* [real world] the "zero bytes IN" case isn't really used.
+ * hardware can easily trip up in this weird case, since its
+ * status stage is IN, not OUT like other ep0in transfers.
+ */
+ if (len > length)
+ len = realworld ? 1 : 0;
+ }
+
+ if (retval < 0)
+ ERROR(dev, "ctrl_out %s failed, code %d, count %d\n",
+ what, retval, i);
+
+ kfree(buf - offset);
+ return retval;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* ISO tests ... mimics common usage
+ * - buffer length is split into N packets (mostly maxpacket sized)
+ * - multi-buffers according to sglen
+ */
+
+struct iso_context {
+ unsigned count;
+ unsigned pending;
+ spinlock_t lock;
+ struct completion done;
+ int submit_error;
+ unsigned long errors;
+ unsigned long packet_count;
+ struct usbtest_dev *dev;
+};
+
+static void iso_callback(struct urb *urb)
+{
+ struct iso_context *ctx = urb->context;
+
+ spin_lock(&ctx->lock);
+ ctx->count--;
+
+ ctx->packet_count += urb->number_of_packets;
+ if (urb->error_count > 0)
+ ctx->errors += urb->error_count;
+ else if (urb->status != 0)
+ ctx->errors += urb->number_of_packets;
+ else if (urb->actual_length != urb->transfer_buffer_length)
+ ctx->errors++;
+ else if (check_guard_bytes(ctx->dev, urb) != 0)
+ ctx->errors++;
+
+ if (urb->status == 0 && ctx->count > (ctx->pending - 1)
+ && !ctx->submit_error) {
+ int status = usb_submit_urb(urb, GFP_ATOMIC);
+ switch (status) {
+ case 0:
+ goto done;
+ default:
+ dev_err(&ctx->dev->intf->dev,
+ "iso resubmit err %d\n",
+ status);
+ /* FALLTHROUGH */
+ case -ENODEV: /* disconnected */
+ case -ESHUTDOWN: /* endpoint disabled */
+ ctx->submit_error = 1;
+ break;
+ }
+ }
+
+ ctx->pending--;
+ if (ctx->pending == 0) {
+ if (ctx->errors)
+ dev_err(&ctx->dev->intf->dev,
+ "iso test, %lu errors out of %lu\n",
+ ctx->errors, ctx->packet_count);
+ complete(&ctx->done);
+ }
+done:
+ spin_unlock(&ctx->lock);
+}
+
+static struct urb *iso_alloc_urb(
+ struct usb_device *udev,
+ int pipe,
+ struct usb_endpoint_descriptor *desc,
+ long bytes,
+ unsigned offset
+)
+{
+ struct urb *urb;
+ unsigned i, maxp, packets;
+
+ if (bytes < 0 || !desc)
+ return NULL;
+ maxp = 0x7ff & usb_endpoint_maxp(desc);
+ maxp *= 1 + (0x3 & (usb_endpoint_maxp(desc) >> 11));
+ packets = DIV_ROUND_UP(bytes, maxp);
+
+ urb = usb_alloc_urb(packets, GFP_KERNEL);
+ if (!urb)
+ return urb;
+ urb->dev = udev;
+ urb->pipe = pipe;
+
+ urb->number_of_packets = packets;
+ urb->transfer_buffer_length = bytes;
+ urb->transfer_buffer = usb_alloc_coherent(udev, bytes + offset,
+ GFP_KERNEL,
+ &urb->transfer_dma);
+ if (!urb->transfer_buffer) {
+ usb_free_urb(urb);
+ return NULL;
+ }
+ if (offset) {
+ memset(urb->transfer_buffer, GUARD_BYTE, offset);
+ urb->transfer_buffer += offset;
+ urb->transfer_dma += offset;
+ }
+ /* For inbound transfers use guard byte so that test fails if
+ data not correctly copied */
+ memset(urb->transfer_buffer,
+ usb_pipein(urb->pipe) ? GUARD_BYTE : 0,
+ bytes);
+
+ for (i = 0; i < packets; i++) {
+ /* here, only the last packet will be short */
+ urb->iso_frame_desc[i].length = min((unsigned) bytes, maxp);
+ bytes -= urb->iso_frame_desc[i].length;
+
+ urb->iso_frame_desc[i].offset = maxp * i;
+ }
+
+ urb->complete = iso_callback;
+ /* urb->context = SET BY CALLER */
+ urb->interval = 1 << (desc->bInterval - 1);
+ urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
+ return urb;
+}
+
+static int
+test_iso_queue(struct usbtest_dev *dev, struct usbtest_param *param,
+ int pipe, struct usb_endpoint_descriptor *desc, unsigned offset)
+{
+ struct iso_context context;
+ struct usb_device *udev;
+ unsigned i;
+ unsigned long packets = 0;
+ int status = 0;
+ struct urb *urbs[10]; /* FIXME no limit */
+
+ if (param->sglen > 10)
+ return -EDOM;
+
+ memset(&context, 0, sizeof(context));
+ context.count = param->iterations * param->sglen;
+ context.dev = dev;
+ init_completion(&context.done);
+ spin_lock_init(&context.lock);
+
+ memset(urbs, 0, sizeof(urbs));
+ udev = testdev_to_usbdev(dev);
+ dev_info(&dev->intf->dev,
+ "... iso period %d %sframes, wMaxPacket %04x\n",
+ 1 << (desc->bInterval - 1),
+ (udev->speed == USB_SPEED_HIGH) ? "micro" : "",
+ usb_endpoint_maxp(desc));
+
+ for (i = 0; i < param->sglen; i++) {
+ urbs[i] = iso_alloc_urb(udev, pipe, desc,
+ param->length, offset);
+ if (!urbs[i]) {
+ status = -ENOMEM;
+ goto fail;
+ }
+ packets += urbs[i]->number_of_packets;
+ urbs[i]->context = &context;
+ }
+ packets *= param->iterations;
+ dev_info(&dev->intf->dev,
+ "... total %lu msec (%lu packets)\n",
+ (packets * (1 << (desc->bInterval - 1)))
+ / ((udev->speed == USB_SPEED_HIGH) ? 8 : 1),
+ packets);
+
+ spin_lock_irq(&context.lock);
+ for (i = 0; i < param->sglen; i++) {
+ ++context.pending;
+ status = usb_submit_urb(urbs[i], GFP_ATOMIC);
+ if (status < 0) {
+ ERROR(dev, "submit iso[%d], error %d\n", i, status);
+ if (i == 0) {
+ spin_unlock_irq(&context.lock);
+ goto fail;
+ }
+
+ simple_free_urb(urbs[i]);
+ urbs[i] = NULL;
+ context.pending--;
+ context.submit_error = 1;
+ break;
+ }
+ }
+ spin_unlock_irq(&context.lock);
+
+ wait_for_completion(&context.done);
+
+ for (i = 0; i < param->sglen; i++) {
+ if (urbs[i])
+ simple_free_urb(urbs[i]);
+ }
+ /*
+ * Isochronous transfers are expected to fail sometimes. As an
+ * arbitrary limit, we will report an error if any submissions
+ * fail or if the transfer failure rate is > 10%.
+ */
+ if (status != 0)
+ ;
+ else if (context.submit_error)
+ status = -EACCES;
+ else if (context.errors > context.packet_count / 10)
+ status = -EIO;
+ return status;
+
+fail:
+ for (i = 0; i < param->sglen; i++) {
+ if (urbs[i])
+ simple_free_urb(urbs[i]);
+ }
+ return status;
+}
+
+static int test_unaligned_bulk(
+ struct usbtest_dev *tdev,
+ int pipe,
+ unsigned length,
+ int iterations,
+ unsigned transfer_flags,
+ const char *label)
+{
+ int retval;
+ struct urb *urb = usbtest_alloc_urb(
+ testdev_to_usbdev(tdev), pipe, length, transfer_flags, 1, 0);
+
+ if (!urb)
+ return -ENOMEM;
+
+ retval = simple_io(tdev, urb, iterations, 0, 0, label);
+ simple_free_urb(urb);
+ return retval;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* We only have this one interface to user space, through usbfs.
+ * User mode code can scan usbfs to find N different devices (maybe on
+ * different busses) to use when testing, and allocate one thread per
+ * test. So discovery is simplified, and we have no device naming issues.
+ *
+ * Don't use these only as stress/load tests. Use them along with with
+ * other USB bus activity: plugging, unplugging, mousing, mp3 playback,
+ * video capture, and so on. Run different tests at different times, in
+ * different sequences. Nothing here should interact with other devices,
+ * except indirectly by consuming USB bandwidth and CPU resources for test
+ * threads and request completion. But the only way to know that for sure
+ * is to test when HC queues are in use by many devices.
+ *
+ * WARNING: Because usbfs grabs udev->dev.sem before calling this ioctl(),
+ * it locks out usbcore in certain code paths. Notably, if you disconnect
+ * the device-under-test, hub_wq will wait block forever waiting for the
+ * ioctl to complete ... so that usb_disconnect() can abort the pending
+ * urbs and then call usbtest_disconnect(). To abort a test, you're best
+ * off just killing the userspace task and waiting for it to exit.
+ */
+
+static int
+usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf)
+{
+ struct usbtest_dev *dev = usb_get_intfdata(intf);
+ struct usb_device *udev = testdev_to_usbdev(dev);
+ struct usbtest_param *param = buf;
+ int retval = -EOPNOTSUPP;
+ struct urb *urb;
+ struct scatterlist *sg;
+ struct usb_sg_request req;
+ struct timeval start;
+ unsigned i;
+
+ /* FIXME USBDEVFS_CONNECTINFO doesn't say how fast the device is. */
+
+ pattern = mod_pattern;
+
+ if (code != USBTEST_REQUEST)
+ return -EOPNOTSUPP;
+
+ if (param->iterations <= 0)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&dev->lock))
+ return -ERESTARTSYS;
+
+ /* FIXME: What if a system sleep starts while a test is running? */
+
+ /* some devices, like ez-usb default devices, need a non-default
+ * altsetting to have any active endpoints. some tests change
+ * altsettings; force a default so most tests don't need to check.
+ */
+ if (dev->info->alt >= 0) {
+ int res;
+
+ if (intf->altsetting->desc.bInterfaceNumber) {
+ mutex_unlock(&dev->lock);
+ return -ENODEV;
+ }
+ res = set_altsetting(dev, dev->info->alt);
+ if (res) {
+ dev_err(&intf->dev,
+ "set altsetting to %d failed, %d\n",
+ dev->info->alt, res);
+ mutex_unlock(&dev->lock);
+ return res;
+ }
+ }
+
+ /*
+ * Just a bunch of test cases that every HCD is expected to handle.
+ *
+ * Some may need specific firmware, though it'd be good to have
+ * one firmware image to handle all the test cases.
+ *
+ * FIXME add more tests! cancel requests, verify the data, control
+ * queueing, concurrent read+write threads, and so on.
+ */
+ do_gettimeofday(&start);
+ switch (param->test_num) {
+
+ case 0:
+ dev_info(&intf->dev, "TEST 0: NOP\n");
+ retval = 0;
+ break;
+
+ /* Simple non-queued bulk I/O tests */
+ case 1:
+ if (dev->out_pipe == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 1: write %d bytes %u times\n",
+ param->length, param->iterations);
+ urb = simple_alloc_urb(udev, dev->out_pipe, param->length, 0);
+ if (!urb) {
+ retval = -ENOMEM;
+ break;
+ }
+ /* FIRMWARE: bulk sink (maybe accepts short writes) */
+ retval = simple_io(dev, urb, param->iterations, 0, 0, "test1");
+ simple_free_urb(urb);
+ break;
+ case 2:
+ if (dev->in_pipe == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 2: read %d bytes %u times\n",
+ param->length, param->iterations);
+ urb = simple_alloc_urb(udev, dev->in_pipe, param->length, 0);
+ if (!urb) {
+ retval = -ENOMEM;
+ break;
+ }
+ /* FIRMWARE: bulk source (maybe generates short writes) */
+ retval = simple_io(dev, urb, param->iterations, 0, 0, "test2");
+ simple_free_urb(urb);
+ break;
+ case 3:
+ if (dev->out_pipe == 0 || param->vary == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 3: write/%d 0..%d bytes %u times\n",
+ param->vary, param->length, param->iterations);
+ urb = simple_alloc_urb(udev, dev->out_pipe, param->length, 0);
+ if (!urb) {
+ retval = -ENOMEM;
+ break;
+ }
+ /* FIRMWARE: bulk sink (maybe accepts short writes) */
+ retval = simple_io(dev, urb, param->iterations, param->vary,
+ 0, "test3");
+ simple_free_urb(urb);
+ break;
+ case 4:
+ if (dev->in_pipe == 0 || param->vary == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 4: read/%d 0..%d bytes %u times\n",
+ param->vary, param->length, param->iterations);
+ urb = simple_alloc_urb(udev, dev->in_pipe, param->length, 0);
+ if (!urb) {
+ retval = -ENOMEM;
+ break;
+ }
+ /* FIRMWARE: bulk source (maybe generates short writes) */
+ retval = simple_io(dev, urb, param->iterations, param->vary,
+ 0, "test4");
+ simple_free_urb(urb);
+ break;
+
+ /* Queued bulk I/O tests */
+ case 5:
+ if (dev->out_pipe == 0 || param->sglen == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 5: write %d sglists %d entries of %d bytes\n",
+ param->iterations,
+ param->sglen, param->length);
+ sg = alloc_sglist(param->sglen, param->length, 0);
+ if (!sg) {
+ retval = -ENOMEM;
+ break;
+ }
+ /* FIRMWARE: bulk sink (maybe accepts short writes) */
+ retval = perform_sglist(dev, param->iterations, dev->out_pipe,
+ &req, sg, param->sglen);
+ free_sglist(sg, param->sglen);
+ break;
+
+ case 6:
+ if (dev->in_pipe == 0 || param->sglen == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 6: read %d sglists %d entries of %d bytes\n",
+ param->iterations,
+ param->sglen, param->length);
+ sg = alloc_sglist(param->sglen, param->length, 0);
+ if (!sg) {
+ retval = -ENOMEM;
+ break;
+ }
+ /* FIRMWARE: bulk source (maybe generates short writes) */
+ retval = perform_sglist(dev, param->iterations, dev->in_pipe,
+ &req, sg, param->sglen);
+ free_sglist(sg, param->sglen);
+ break;
+ case 7:
+ if (dev->out_pipe == 0 || param->sglen == 0 || param->vary == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 7: write/%d %d sglists %d entries 0..%d bytes\n",
+ param->vary, param->iterations,
+ param->sglen, param->length);
+ sg = alloc_sglist(param->sglen, param->length, param->vary);
+ if (!sg) {
+ retval = -ENOMEM;
+ break;
+ }
+ /* FIRMWARE: bulk sink (maybe accepts short writes) */
+ retval = perform_sglist(dev, param->iterations, dev->out_pipe,
+ &req, sg, param->sglen);
+ free_sglist(sg, param->sglen);
+ break;
+ case 8:
+ if (dev->in_pipe == 0 || param->sglen == 0 || param->vary == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 8: read/%d %d sglists %d entries 0..%d bytes\n",
+ param->vary, param->iterations,
+ param->sglen, param->length);
+ sg = alloc_sglist(param->sglen, param->length, param->vary);
+ if (!sg) {
+ retval = -ENOMEM;
+ break;
+ }
+ /* FIRMWARE: bulk source (maybe generates short writes) */
+ retval = perform_sglist(dev, param->iterations, dev->in_pipe,
+ &req, sg, param->sglen);
+ free_sglist(sg, param->sglen);
+ break;
+
+ /* non-queued sanity tests for control (chapter 9 subset) */
+ case 9:
+ retval = 0;
+ dev_info(&intf->dev,
+ "TEST 9: ch9 (subset) control tests, %d times\n",
+ param->iterations);
+ for (i = param->iterations; retval == 0 && i--; /* NOP */)
+ retval = ch9_postconfig(dev);
+ if (retval)
+ dev_err(&intf->dev, "ch9 subset failed, "
+ "iterations left %d\n", i);
+ break;
+
+ /* queued control messaging */
+ case 10:
+ retval = 0;
+ dev_info(&intf->dev,
+ "TEST 10: queue %d control calls, %d times\n",
+ param->sglen,
+ param->iterations);
+ retval = test_ctrl_queue(dev, param);
+ break;
+
+ /* simple non-queued unlinks (ring with one urb) */
+ case 11:
+ if (dev->in_pipe == 0 || !param->length)
+ break;
+ retval = 0;
+ dev_info(&intf->dev, "TEST 11: unlink %d reads of %d\n",
+ param->iterations, param->length);
+ for (i = param->iterations; retval == 0 && i--; /* NOP */)
+ retval = unlink_simple(dev, dev->in_pipe,
+ param->length);
+ if (retval)
+ dev_err(&intf->dev, "unlink reads failed %d, "
+ "iterations left %d\n", retval, i);
+ break;
+ case 12:
+ if (dev->out_pipe == 0 || !param->length)
+ break;
+ retval = 0;
+ dev_info(&intf->dev, "TEST 12: unlink %d writes of %d\n",
+ param->iterations, param->length);
+ for (i = param->iterations; retval == 0 && i--; /* NOP */)
+ retval = unlink_simple(dev, dev->out_pipe,
+ param->length);
+ if (retval)
+ dev_err(&intf->dev, "unlink writes failed %d, "
+ "iterations left %d\n", retval, i);
+ break;
+
+ /* ep halt tests */
+ case 13:
+ if (dev->out_pipe == 0 && dev->in_pipe == 0)
+ break;
+ retval = 0;
+ dev_info(&intf->dev, "TEST 13: set/clear %d halts\n",
+ param->iterations);
+ for (i = param->iterations; retval == 0 && i--; /* NOP */)
+ retval = halt_simple(dev);
+
+ if (retval)
+ ERROR(dev, "halts failed, iterations left %d\n", i);
+ break;
+
+ /* control write tests */
+ case 14:
+ if (!dev->info->ctrl_out)
+ break;
+ dev_info(&intf->dev, "TEST 14: %d ep0out, %d..%d vary %d\n",
+ param->iterations,
+ realworld ? 1 : 0, param->length,
+ param->vary);
+ retval = ctrl_out(dev, param->iterations,
+ param->length, param->vary, 0);
+ break;
+
+ /* iso write tests */
+ case 15:
+ if (dev->out_iso_pipe == 0 || param->sglen == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 15: write %d iso, %d entries of %d bytes\n",
+ param->iterations,
+ param->sglen, param->length);
+ /* FIRMWARE: iso sink */
+ retval = test_iso_queue(dev, param,
+ dev->out_iso_pipe, dev->iso_out, 0);
+ break;
+
+ /* iso read tests */
+ case 16:
+ if (dev->in_iso_pipe == 0 || param->sglen == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 16: read %d iso, %d entries of %d bytes\n",
+ param->iterations,
+ param->sglen, param->length);
+ /* FIRMWARE: iso source */
+ retval = test_iso_queue(dev, param,
+ dev->in_iso_pipe, dev->iso_in, 0);
+ break;
+
+ /* FIXME scatterlist cancel (needs helper thread) */
+
+ /* Tests for bulk I/O using DMA mapping by core and odd address */
+ case 17:
+ if (dev->out_pipe == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 17: write odd addr %d bytes %u times core map\n",
+ param->length, param->iterations);
+
+ retval = test_unaligned_bulk(
+ dev, dev->out_pipe,
+ param->length, param->iterations,
+ 0, "test17");
+ break;
+
+ case 18:
+ if (dev->in_pipe == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 18: read odd addr %d bytes %u times core map\n",
+ param->length, param->iterations);
+
+ retval = test_unaligned_bulk(
+ dev, dev->in_pipe,
+ param->length, param->iterations,
+ 0, "test18");
+ break;
+
+ /* Tests for bulk I/O using premapped coherent buffer and odd address */
+ case 19:
+ if (dev->out_pipe == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 19: write odd addr %d bytes %u times premapped\n",
+ param->length, param->iterations);
+
+ retval = test_unaligned_bulk(
+ dev, dev->out_pipe,
+ param->length, param->iterations,
+ URB_NO_TRANSFER_DMA_MAP, "test19");
+ break;
+
+ case 20:
+ if (dev->in_pipe == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 20: read odd addr %d bytes %u times premapped\n",
+ param->length, param->iterations);
+
+ retval = test_unaligned_bulk(
+ dev, dev->in_pipe,
+ param->length, param->iterations,
+ URB_NO_TRANSFER_DMA_MAP, "test20");
+ break;
+
+ /* control write tests with unaligned buffer */
+ case 21:
+ if (!dev->info->ctrl_out)
+ break;
+ dev_info(&intf->dev,
+ "TEST 21: %d ep0out odd addr, %d..%d vary %d\n",
+ param->iterations,
+ realworld ? 1 : 0, param->length,
+ param->vary);
+ retval = ctrl_out(dev, param->iterations,
+ param->length, param->vary, 1);
+ break;
+
+ /* unaligned iso tests */
+ case 22:
+ if (dev->out_iso_pipe == 0 || param->sglen == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 22: write %d iso odd, %d entries of %d bytes\n",
+ param->iterations,
+ param->sglen, param->length);
+ retval = test_iso_queue(dev, param,
+ dev->out_iso_pipe, dev->iso_out, 1);
+ break;
+
+ case 23:
+ if (dev->in_iso_pipe == 0 || param->sglen == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 23: read %d iso odd, %d entries of %d bytes\n",
+ param->iterations,
+ param->sglen, param->length);
+ retval = test_iso_queue(dev, param,
+ dev->in_iso_pipe, dev->iso_in, 1);
+ break;
+
+ /* unlink URBs from a bulk-OUT queue */
+ case 24:
+ if (dev->out_pipe == 0 || !param->length || param->sglen < 4)
+ break;
+ retval = 0;
+ dev_info(&intf->dev, "TEST 24: unlink from %d queues of "
+ "%d %d-byte writes\n",
+ param->iterations, param->sglen, param->length);
+ for (i = param->iterations; retval == 0 && i > 0; --i) {
+ retval = unlink_queued(dev, dev->out_pipe,
+ param->sglen, param->length);
+ if (retval) {
+ dev_err(&intf->dev,
+ "unlink queued writes failed %d, "
+ "iterations left %d\n", retval, i);
+ break;
+ }
+ }
+ break;
+
+ /* Simple non-queued interrupt I/O tests */
+ case 25:
+ if (dev->out_int_pipe == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 25: write %d bytes %u times\n",
+ param->length, param->iterations);
+ urb = simple_alloc_urb(udev, dev->out_int_pipe, param->length,
+ dev->int_out->bInterval);
+ if (!urb) {
+ retval = -ENOMEM;
+ break;
+ }
+ /* FIRMWARE: interrupt sink (maybe accepts short writes) */
+ retval = simple_io(dev, urb, param->iterations, 0, 0, "test25");
+ simple_free_urb(urb);
+ break;
+ case 26:
+ if (dev->in_int_pipe == 0)
+ break;
+ dev_info(&intf->dev,
+ "TEST 26: read %d bytes %u times\n",
+ param->length, param->iterations);
+ urb = simple_alloc_urb(udev, dev->in_int_pipe, param->length,
+ dev->int_in->bInterval);
+ if (!urb) {
+ retval = -ENOMEM;
+ break;
+ }
+ /* FIRMWARE: interrupt source (maybe generates short writes) */
+ retval = simple_io(dev, urb, param->iterations, 0, 0, "test26");
+ simple_free_urb(urb);
+ break;
+ }
+ do_gettimeofday(&param->duration);
+ param->duration.tv_sec -= start.tv_sec;
+ param->duration.tv_usec -= start.tv_usec;
+ if (param->duration.tv_usec < 0) {
+ param->duration.tv_usec += 1000 * 1000;
+ param->duration.tv_sec -= 1;
+ }
+ mutex_unlock(&dev->lock);
+ return retval;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static unsigned force_interrupt;
+module_param(force_interrupt, uint, 0);
+MODULE_PARM_DESC(force_interrupt, "0 = test default; else interrupt");
+
+#ifdef GENERIC
+static unsigned short vendor;
+module_param(vendor, ushort, 0);
+MODULE_PARM_DESC(vendor, "vendor code (from usb-if)");
+
+static unsigned short product;
+module_param(product, ushort, 0);
+MODULE_PARM_DESC(product, "product code (from vendor)");
+#endif
+
+static int
+usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+ struct usb_device *udev;
+ struct usbtest_dev *dev;
+ struct usbtest_info *info;
+ char *rtest, *wtest;
+ char *irtest, *iwtest;
+ char *intrtest, *intwtest;
+
+ udev = interface_to_usbdev(intf);
+
+#ifdef GENERIC
+ /* specify devices by module parameters? */
+ if (id->match_flags == 0) {
+ /* vendor match required, product match optional */
+ if (!vendor || le16_to_cpu(udev->descriptor.idVendor) != (u16)vendor)
+ return -ENODEV;
+ if (product && le16_to_cpu(udev->descriptor.idProduct) != (u16)product)
+ return -ENODEV;
+ dev_info(&intf->dev, "matched module params, "
+ "vend=0x%04x prod=0x%04x\n",
+ le16_to_cpu(udev->descriptor.idVendor),
+ le16_to_cpu(udev->descriptor.idProduct));
+ }
+#endif
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+ info = (struct usbtest_info *) id->driver_info;
+ dev->info = info;
+ mutex_init(&dev->lock);
+
+ dev->intf = intf;
+
+ /* cacheline-aligned scratch for i/o */
+ dev->buf = kmalloc(TBUF_SIZE, GFP_KERNEL);
+ if (dev->buf == NULL) {
+ kfree(dev);
+ return -ENOMEM;
+ }
+
+ /* NOTE this doesn't yet test the handful of difference that are
+ * visible with high speed interrupts: bigger maxpacket (1K) and
+ * "high bandwidth" modes (up to 3 packets/uframe).
+ */
+ rtest = wtest = "";
+ irtest = iwtest = "";
+ intrtest = intwtest = "";
+ if (force_interrupt || udev->speed == USB_SPEED_LOW) {
+ if (info->ep_in) {
+ dev->in_pipe = usb_rcvintpipe(udev, info->ep_in);
+ rtest = " intr-in";
+ }
+ if (info->ep_out) {
+ dev->out_pipe = usb_sndintpipe(udev, info->ep_out);
+ wtest = " intr-out";
+ }
+ } else {
+ if (override_alt >= 0 || info->autoconf) {
+ int status;
+
+ status = get_endpoints(dev, intf);
+ if (status < 0) {
+ WARNING(dev, "couldn't get endpoints, %d\n",
+ status);
+ kfree(dev->buf);
+ kfree(dev);
+ return status;
+ }
+ /* may find bulk or ISO pipes */
+ } else {
+ if (info->ep_in)
+ dev->in_pipe = usb_rcvbulkpipe(udev,
+ info->ep_in);
+ if (info->ep_out)
+ dev->out_pipe = usb_sndbulkpipe(udev,
+ info->ep_out);
+ }
+ if (dev->in_pipe)
+ rtest = " bulk-in";
+ if (dev->out_pipe)
+ wtest = " bulk-out";
+ if (dev->in_iso_pipe)
+ irtest = " iso-in";
+ if (dev->out_iso_pipe)
+ iwtest = " iso-out";
+ if (dev->in_int_pipe)
+ intrtest = " int-in";
+ if (dev->out_int_pipe)
+ intwtest = " int-out";
+ }
+
+ usb_set_intfdata(intf, dev);
+ dev_info(&intf->dev, "%s\n", info->name);
+ dev_info(&intf->dev, "%s {control%s%s%s%s%s%s%s} tests%s\n",
+ usb_speed_string(udev->speed),
+ info->ctrl_out ? " in/out" : "",
+ rtest, wtest,
+ irtest, iwtest,
+ intrtest, intwtest,
+ info->alt >= 0 ? " (+alt)" : "");
+ return 0;
+}
+
+static int usbtest_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ return 0;
+}
+
+static int usbtest_resume(struct usb_interface *intf)
+{
+ return 0;
+}
+
+
+static void usbtest_disconnect(struct usb_interface *intf)
+{
+ struct usbtest_dev *dev = usb_get_intfdata(intf);
+
+ usb_set_intfdata(intf, NULL);
+ dev_dbg(&intf->dev, "disconnect\n");
+ kfree(dev);
+}
+
+/* Basic testing only needs a device that can source or sink bulk traffic.
+ * Any device can test control transfers (default with GENERIC binding).
+ *
+ * Several entries work with the default EP0 implementation that's built
+ * into EZ-USB chips. There's a default vendor ID which can be overridden
+ * by (very) small config EEPROMS, but otherwise all these devices act
+ * identically until firmware is loaded: only EP0 works. It turns out
+ * to be easy to make other endpoints work, without modifying that EP0
+ * behavior. For now, we expect that kind of firmware.
+ */
+
+/* an21xx or fx versions of ez-usb */
+static struct usbtest_info ez1_info = {
+ .name = "EZ-USB device",
+ .ep_in = 2,
+ .ep_out = 2,
+ .alt = 1,
+};
+
+/* fx2 version of ez-usb */
+static struct usbtest_info ez2_info = {
+ .name = "FX2 device",
+ .ep_in = 6,
+ .ep_out = 2,
+ .alt = 1,
+};
+
+/* ezusb family device with dedicated usb test firmware,
+ */
+static struct usbtest_info fw_info = {
+ .name = "usb test device",
+ .ep_in = 2,
+ .ep_out = 2,
+ .alt = 1,
+ .autoconf = 1, /* iso and ctrl_out need autoconf */
+ .ctrl_out = 1,
+ .iso = 1, /* iso_ep's are #8 in/out */
+};
+
+/* peripheral running Linux and 'zero.c' test firmware, or
+ * its user-mode cousin. different versions of this use
+ * different hardware with the same vendor/product codes.
+ * host side MUST rely on the endpoint descriptors.
+ */
+static struct usbtest_info gz_info = {
+ .name = "Linux gadget zero",
+ .autoconf = 1,
+ .ctrl_out = 1,
+ .iso = 1,
+ .intr = 1,
+ .alt = 0,
+};
+
+static struct usbtest_info um_info = {
+ .name = "Linux user mode test driver",
+ .autoconf = 1,
+ .alt = -1,
+};
+
+static struct usbtest_info um2_info = {
+ .name = "Linux user mode ISO test driver",
+ .autoconf = 1,
+ .iso = 1,
+ .alt = -1,
+};
+
+#ifdef IBOT2
+/* this is a nice source of high speed bulk data;
+ * uses an FX2, with firmware provided in the device
+ */
+static struct usbtest_info ibot2_info = {
+ .name = "iBOT2 webcam",
+ .ep_in = 2,
+ .alt = -1,
+};
+#endif
+
+#ifdef GENERIC
+/* we can use any device to test control traffic */
+static struct usbtest_info generic_info = {
+ .name = "Generic USB device",
+ .alt = -1,
+};
+#endif
+
+
+static const struct usb_device_id id_table[] = {
+
+ /*-------------------------------------------------------------*/
+
+ /* EZ-USB devices which download firmware to replace (or in our
+ * case augment) the default device implementation.
+ */
+
+ /* generic EZ-USB FX controller */
+ { USB_DEVICE(0x0547, 0x2235),
+ .driver_info = (unsigned long) &ez1_info,
+ },
+
+ /* CY3671 development board with EZ-USB FX */
+ { USB_DEVICE(0x0547, 0x0080),
+ .driver_info = (unsigned long) &ez1_info,
+ },
+
+ /* generic EZ-USB FX2 controller (or development board) */
+ { USB_DEVICE(0x04b4, 0x8613),
+ .driver_info = (unsigned long) &ez2_info,
+ },
+
+ /* re-enumerated usb test device firmware */
+ { USB_DEVICE(0xfff0, 0xfff0),
+ .driver_info = (unsigned long) &fw_info,
+ },
+
+ /* "Gadget Zero" firmware runs under Linux */
+ { USB_DEVICE(0x0525, 0xa4a0),
+ .driver_info = (unsigned long) &gz_info,
+ },
+
+ /* so does a user-mode variant */
+ { USB_DEVICE(0x0525, 0xa4a4),
+ .driver_info = (unsigned long) &um_info,
+ },
+
+ /* ... and a user-mode variant that talks iso */
+ { USB_DEVICE(0x0525, 0xa4a3),
+ .driver_info = (unsigned long) &um2_info,
+ },
+
+#ifdef KEYSPAN_19Qi
+ /* Keyspan 19qi uses an21xx (original EZ-USB) */
+ /* this does not coexist with the real Keyspan 19qi driver! */
+ { USB_DEVICE(0x06cd, 0x010b),
+ .driver_info = (unsigned long) &ez1_info,
+ },
+#endif
+
+ /*-------------------------------------------------------------*/
+
+#ifdef IBOT2
+ /* iBOT2 makes a nice source of high speed bulk-in data */
+ /* this does not coexist with a real iBOT2 driver! */
+ { USB_DEVICE(0x0b62, 0x0059),
+ .driver_info = (unsigned long) &ibot2_info,
+ },
+#endif
+
+ /*-------------------------------------------------------------*/
+
+#ifdef GENERIC
+ /* module params can specify devices to use for control tests */
+ { .driver_info = (unsigned long) &generic_info, },
+#endif
+
+ /*-------------------------------------------------------------*/
+
+ { }
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static struct usb_driver usbtest_driver = {
+ .name = "usbtest",
+ .id_table = id_table,
+ .probe = usbtest_probe,
+ .unlocked_ioctl = usbtest_ioctl,
+ .disconnect = usbtest_disconnect,
+ .suspend = usbtest_suspend,
+ .resume = usbtest_resume,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int __init usbtest_init(void)
+{
+#ifdef GENERIC
+ if (vendor)
+ pr_debug("params: vend=0x%04x prod=0x%04x\n", vendor, product);
+#endif
+ return usb_register(&usbtest_driver);
+}
+module_init(usbtest_init);
+
+static void __exit usbtest_exit(void)
+{
+ usb_deregister(&usbtest_driver);
+}
+module_exit(usbtest_exit);
+
+MODULE_DESCRIPTION("USB Core/HCD Testing Driver");
+MODULE_LICENSE("GPL");
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 03:45:53 +0000