| #include <linux/config.h> |
| #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/usb.h> |
| |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| // 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 */ |
| 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; |
| struct usb_endpoint_descriptor *iso_in, *iso_out; |
| struct semaphore sem; |
| |
| #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 xprintk(tdev,level,fmt,args...) \ |
| dev_printk(level , &(tdev)->intf->dev , fmt , ## args) |
| |
| #ifdef DEBUG |
| #define DBG(dev,fmt,args...) \ |
| xprintk(dev , KERN_DEBUG , fmt , ## args) |
| #else |
| #define DBG(dev,fmt,args...) \ |
| do { } while (0) |
| #endif /* DEBUG */ |
| |
| #ifdef VERBOSE |
| #define VDBG DBG |
| #else |
| #define VDBG(dev,fmt,args...) \ |
| do { } while (0) |
| #endif /* VERBOSE */ |
| |
| #define ERROR(dev,fmt,args...) \ |
| xprintk(dev , KERN_ERR , fmt , ## args) |
| #define WARN(dev,fmt,args...) \ |
| xprintk(dev , KERN_WARNING , fmt , ## args) |
| #define INFO(dev,fmt,args...) \ |
| xprintk(dev , KERN_INFO , fmt , ## args) |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| 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_device *udev; |
| |
| for (tmp = 0; tmp < intf->num_altsetting; tmp++) { |
| unsigned ep; |
| |
| in = out = NULL; |
| iso_in = iso_out = NULL; |
| alt = intf->altsetting + tmp; |
| |
| /* take the first altsetting with in-bulk + out-bulk; |
| * ignore other endpoints and altsetttings. |
| */ |
| for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) { |
| struct usb_host_endpoint *e; |
| |
| e = alt->endpoint + ep; |
| switch (e->desc.bmAttributes) { |
| case USB_ENDPOINT_XFER_BULK: |
| break; |
| case USB_ENDPOINT_XFER_ISOC: |
| if (dev->info->iso) |
| goto try_iso; |
| // FALLTHROUGH |
| default: |
| continue; |
| } |
| if (e->desc.bEndpointAddress & USB_DIR_IN) { |
| if (!in) |
| in = e; |
| } else { |
| if (!out) |
| out = e; |
| } |
| continue; |
| try_iso: |
| if (e->desc.bEndpointAddress & USB_DIR_IN) { |
| if (!iso_in) |
| iso_in = e; |
| } else { |
| if (!iso_out) |
| iso_out = e; |
| } |
| } |
| if ((in && out) || (iso_in && iso_out)) |
| goto found; |
| } |
| return -EINVAL; |
| |
| found: |
| udev = testdev_to_usbdev (dev); |
| 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); |
| dev->iso_out = &iso_out->desc; |
| dev->out_iso_pipe = usb_sndisocpipe (udev, |
| iso_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, struct pt_regs *regs) |
| { |
| complete ((struct completion *) urb->context); |
| } |
| |
| static struct urb *simple_alloc_urb ( |
| struct usb_device *udev, |
| int pipe, |
| unsigned long bytes |
| ) |
| { |
| struct urb *urb; |
| |
| if (bytes < 0) |
| return NULL; |
| urb = usb_alloc_urb (0, SLAB_KERNEL); |
| if (!urb) |
| return urb; |
| 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 = URB_NO_TRANSFER_DMA_MAP; |
| if (usb_pipein (pipe)) |
| urb->transfer_flags |= URB_SHORT_NOT_OK; |
| urb->transfer_buffer = usb_buffer_alloc (udev, bytes, SLAB_KERNEL, |
| &urb->transfer_dma); |
| if (!urb->transfer_buffer) { |
| usb_free_urb (urb); |
| urb = NULL; |
| } else |
| memset (urb->transfer_buffer, 0, bytes); |
| return urb; |
| } |
| |
| static unsigned pattern = 0; |
| module_param (pattern, uint, S_IRUGO); |
| // MODULE_PARM_DESC (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 int simple_check_buf (struct urb *urb) |
| { |
| unsigned i; |
| u8 expected; |
| u8 *buf = urb->transfer_buffer; |
| unsigned len = urb->actual_length; |
| |
| 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; |
| dbg ("buf[%d] = %d (not %d)", i, *buf, expected); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static void simple_free_urb (struct urb *urb) |
| { |
| usb_buffer_free (urb->dev, urb->transfer_buffer_length, |
| urb->transfer_buffer, urb->transfer_dma); |
| usb_free_urb (urb); |
| } |
| |
| static int simple_io ( |
| 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; |
| |
| urb->context = &completion; |
| while (retval == 0 && iterations-- > 0) { |
| init_completion (&completion); |
| if (usb_pipeout (urb->pipe)) |
| simple_fill_buf (urb); |
| if ((retval = usb_submit_urb (urb, SLAB_KERNEL)) != 0) |
| break; |
| |
| /* NOTE: no timeouts; can't be broken out of by interrupt */ |
| wait_for_completion (&completion); |
| retval = urb->status; |
| urb->dev = udev; |
| if (retval == 0 && usb_pipein (urb->pipe)) |
| retval = simple_check_buf (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_dbg (&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 [i].page) |
| continue; |
| kfree (page_address (sg [i].page) + sg [i].offset); |
| } |
| kfree (sg); |
| } |
| |
| static struct scatterlist * |
| alloc_sglist (int nents, int max, int vary) |
| { |
| struct scatterlist *sg; |
| unsigned i; |
| unsigned size = max; |
| |
| sg = kmalloc (nents * sizeof *sg, SLAB_KERNEL); |
| if (!sg) |
| return NULL; |
| |
| for (i = 0; i < nents; i++) { |
| char *buf; |
| unsigned j; |
| |
| buf = kzalloc (size, SLAB_KERNEL); |
| if (!buf) { |
| free_sglist (sg, i); |
| return NULL; |
| } |
| |
| /* kmalloc pages are always physically contiguous! */ |
| sg_init_one(&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 int perform_sglist ( |
| struct usb_device *udev, |
| unsigned iterations, |
| int pipe, |
| struct usb_sg_request *req, |
| struct scatterlist *sg, |
| int nents |
| ) |
| { |
| int retval = 0; |
| |
| 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, SLAB_KERNEL); |
| |
| if (retval) |
| break; |
| usb_sg_wait (req); |
| 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) |
| dbg ("perform_sglist failed, iterations left %d, status %d", |
| 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 (char *buf, int len) |
| { |
| struct usb_config_descriptor *config; |
| |
| if (len < sizeof *config) |
| return 0; |
| config = (struct usb_config_descriptor *) buf; |
| |
| switch (config->bDescriptorType) { |
| case USB_DT_CONFIG: |
| case USB_DT_OTHER_SPEED_CONFIG: |
| if (config->bLength != 9) { |
| dbg ("bogus config descriptor length"); |
| return 0; |
| } |
| /* this bit 'must be 1' but often isn't */ |
| if (!realworld && !(config->bmAttributes & 0x80)) { |
| dbg ("high bit of config attributes not set"); |
| return 0; |
| } |
| if (config->bmAttributes & 0x1f) { /* reserved == 0 */ |
| dbg ("reserved config bits set"); |
| 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; |
| dbg ("bogus config descriptor read size"); |
| return 0; |
| } |
| |
| /* 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_dbg (&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_dbg (&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_dbg (&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_dbg (&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_dbg (&iface->dev, "dev descriptor --> %d\n", retval); |
| return (retval < 0) ? retval : -EDOM; |
| } |
| |
| /* 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->buf, retval)) { |
| dev_dbg (&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_dbg (&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_dbg (&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->buf, retval)) { |
| dev_dbg (&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 != 2) { |
| dev_dbg (&iface->dev, "get dev status --> %d\n", retval); |
| return (retval < 0) ? retval : -EDOM; |
| } |
| |
| // 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 != 2) { |
| dev_dbg (&iface->dev, "get interface status --> %d\n", retval); |
| return (retval < 0) ? retval : -EDOM; |
| } |
| // 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 15 /* how many test subcases here? */ |
| |
| struct subcase { |
| struct usb_ctrlrequest setup; |
| int number; |
| int expected; |
| }; |
| |
| static void ctrl_complete (struct urb *urb, struct pt_regs *regs) |
| { |
| 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) { |
| dbg ("subcase %d completed out of order, last %d", |
| 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 && ( |
| ((urb->status == -subcase->expected /* happened */ |
| || urb->status == 0)))) /* didn't */ |
| status = 0; |
| /* sometimes more than one fault is allowed */ |
| else if (subcase->number == 12 && status == -EPIPE) |
| status = 0; |
| else |
| dbg ("subtest %d error, status %d", |
| subcase->number, status); |
| } |
| |
| /* unexpected status codes mean errors; ideally, in hardware */ |
| if (status) { |
| error: |
| if (ctx->status == 0) { |
| int i; |
| |
| ctx->status = status; |
| info ("control queue %02x.%02x, err %d, %d left", |
| reqp->bRequestType, reqp->bRequest, |
| status, ctx->count); |
| |
| /* 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: |
| dbg ("urb unlink --> %d", status); |
| } |
| } |
| status = ctx->status; |
| } |
| } |
| |
| /* resubmit if we need to, else mark this as done */ |
| if ((status == 0) && (ctx->pending < ctx->count)) { |
| if ((status = usb_submit_urb (urb, SLAB_ATOMIC)) != 0) { |
| dbg ("can't resubmit ctrl %02x.%02x, err %d", |
| 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; |
| |
| 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 *), SLAB_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; |
| 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 (USUALLY STALLS) |
| 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 |
| 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; |
| switch (len) { |
| case 8: len = 24; break; |
| case 16: len = 32; break; |
| } |
| expected = -EREMOTEIO; |
| break; |
| default: |
| err ("bogus number of ctrl queue testcases!"); |
| context.status = -EINVAL; |
| goto cleanup; |
| } |
| req.wLength = cpu_to_le16 (len); |
| urb [i] = u = simple_alloc_urb (udev, pipe, len); |
| if (!u) |
| goto cleanup; |
| |
| reqp = usb_buffer_alloc (udev, sizeof *reqp, SLAB_KERNEL, |
| &u->setup_dma); |
| if (!reqp) |
| goto cleanup; |
| reqp->setup = req; |
| reqp->number = i % NUM_SUBCASES; |
| reqp->expected = expected; |
| u->setup_packet = (char *) &reqp->setup; |
| u->transfer_flags |= URB_NO_SETUP_DMA_MAP; |
| |
| 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], SLAB_ATOMIC); |
| if (context.status != 0) { |
| dbg ("can't submit urb[%d], status %d", |
| 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; |
| if (urb [i]->setup_packet) |
| usb_buffer_free (udev, sizeof (struct usb_ctrlrequest), |
| urb [i]->setup_packet, |
| urb [i]->setup_dma); |
| simple_free_urb (urb [i]); |
| } |
| kfree (urb); |
| return context.status; |
| } |
| #undef NUM_SUBCASES |
| |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static void unlink1_callback (struct urb *urb, struct pt_regs *regs) |
| { |
| int status = urb->status; |
| |
| // we "know" -EPIPE (stall) never happens |
| if (!status) |
| status = usb_submit_urb (urb, SLAB_ATOMIC); |
| if (status) { |
| urb->status = status; |
| complete ((struct completion *) 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); |
| if (!urb) |
| return -ENOMEM; |
| urb->context = &completion; |
| urb->complete = unlink1_callback; |
| |
| /* 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. |
| */ |
| if ((retval = usb_submit_urb (urb, SLAB_KERNEL)) != 0) { |
| dev_dbg (&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) { |
| retry: |
| retval = usb_unlink_urb (urb); |
| if (retval == -EBUSY || retval == -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. |
| */ |
| dev_dbg (&dev->intf->dev, "unlink retry\n"); |
| goto retry; |
| } |
| } else |
| usb_kill_urb (urb); |
| if (!(retval == 0 || retval == -EINPROGRESS)) { |
| dev_dbg (&dev->intf->dev, "unlink fail %d\n", retval); |
| return retval; |
| } |
| |
| 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; |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static int verify_not_halted (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) { |
| dbg ("ep %02x couldn't get no-halt status, %d", ep, retval); |
| return retval; |
| } |
| if (status != 0) { |
| dbg ("ep %02x bogus status: %04x != 0", ep, status); |
| return -EINVAL; |
| } |
| retval = simple_io (urb, 1, 0, 0, __FUNCTION__); |
| if (retval != 0) |
| return -EINVAL; |
| return 0; |
| } |
| |
| static int verify_halted (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) { |
| dbg ("ep %02x couldn't get halt status, %d", ep, retval); |
| return retval; |
| } |
| if (status != 1) { |
| dbg ("ep %02x bogus status: %04x != 1", ep, status); |
| return -EINVAL; |
| } |
| retval = simple_io (urb, 1, 0, -EPIPE, __FUNCTION__); |
| if (retval != -EPIPE) |
| return -EINVAL; |
| retval = simple_io (urb, 1, 0, -EPIPE, "verify_still_halted"); |
| if (retval != -EPIPE) |
| return -EINVAL; |
| return 0; |
| } |
| |
| static int test_halt (int ep, struct urb *urb) |
| { |
| int retval; |
| |
| /* shouldn't look or act halted now */ |
| retval = verify_not_halted (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) { |
| dbg ("ep %02x couldn't set halt, %d", ep, retval); |
| return retval; |
| } |
| retval = verify_halted (ep, urb); |
| if (retval < 0) |
| return retval; |
| |
| /* clear halt (tests API + protocol), verify it worked */ |
| retval = usb_clear_halt (urb->dev, urb->pipe); |
| if (retval < 0) { |
| dbg ("ep %02x couldn't clear halt, %d", ep, retval); |
| return retval; |
| } |
| retval = verify_not_halted (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; |
| |
| urb = simple_alloc_urb (testdev_to_usbdev (dev), 0, 512); |
| 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 (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 (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 i, j, len, retval; |
| u8 *buf; |
| char *what = "?"; |
| struct usb_device *udev; |
| |
| if (length < 1 || length > 0xffff || vary >= length) |
| return -EINVAL; |
| |
| buf = kmalloc(length, SLAB_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| |
| 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) { |
| INFO(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) { |
| INFO(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)) { |
| INFO (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 wierd case, since its |
| * status stage is IN, not OUT like other ep0in transfers. |
| */ |
| if (len > length) |
| len = realworld ? 1 : 0; |
| } |
| |
| if (retval < 0) |
| INFO (dev, "ctrl_out %s failed, code %d, count %d\n", |
| what, retval, i); |
| |
| kfree (buf); |
| 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; |
| unsigned long errors; |
| struct usbtest_dev *dev; |
| }; |
| |
| static void iso_callback (struct urb *urb, struct pt_regs *regs) |
| { |
| struct iso_context *ctx = urb->context; |
| |
| spin_lock(&ctx->lock); |
| ctx->count--; |
| |
| if (urb->error_count > 0) |
| ctx->errors += urb->error_count; |
| |
| if (urb->status == 0 && ctx->count > (ctx->pending - 1)) { |
| int status = usb_submit_urb (urb, GFP_ATOMIC); |
| switch (status) { |
| case 0: |
| goto done; |
| default: |
| dev_dbg (&ctx->dev->intf->dev, |
| "iso resubmit err %d\n", |
| status); |
| /* FALLTHROUGH */ |
| case -ENODEV: /* disconnected */ |
| break; |
| } |
| } |
| simple_free_urb (urb); |
| |
| ctx->pending--; |
| if (ctx->pending == 0) { |
| if (ctx->errors) |
| dev_dbg (&ctx->dev->intf->dev, |
| "iso test, %lu errors\n", |
| ctx->errors); |
| 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 |
| ) |
| { |
| struct urb *urb; |
| unsigned i, maxp, packets; |
| |
| if (bytes < 0 || !desc) |
| return NULL; |
| maxp = 0x7ff & le16_to_cpu(desc->wMaxPacketSize); |
| maxp *= 1 + (0x3 & (le16_to_cpu(desc->wMaxPacketSize) >> 11)); |
| packets = (bytes + maxp - 1) / maxp; |
| |
| urb = usb_alloc_urb (packets, SLAB_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_buffer_alloc (udev, bytes, SLAB_KERNEL, |
| &urb->transfer_dma); |
| if (!urb->transfer_buffer) { |
| usb_free_urb (urb); |
| return NULL; |
| } |
| memset (urb->transfer_buffer, 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) |
| { |
| struct iso_context context; |
| struct usb_device *udev; |
| unsigned i; |
| unsigned long packets = 0; |
| int status; |
| struct urb *urbs[10]; /* FIXME no limit */ |
| |
| if (param->sglen > 10) |
| return -EDOM; |
| |
| context.count = param->iterations * param->sglen; |
| context.pending = param->sglen; |
| context.errors = 0; |
| context.dev = dev; |
| init_completion (&context.done); |
| spin_lock_init (&context.lock); |
| |
| memset (urbs, 0, sizeof urbs); |
| udev = testdev_to_usbdev (dev); |
| dev_dbg (&dev->intf->dev, |
| "... iso period %d %sframes, wMaxPacket %04x\n", |
| 1 << (desc->bInterval - 1), |
| (udev->speed == USB_SPEED_HIGH) ? "micro" : "", |
| le16_to_cpu(desc->wMaxPacketSize)); |
| |
| for (i = 0; i < param->sglen; i++) { |
| urbs [i] = iso_alloc_urb (udev, pipe, desc, |
| param->length); |
| if (!urbs [i]) { |
| status = -ENOMEM; |
| goto fail; |
| } |
| packets += urbs[i]->number_of_packets; |
| urbs [i]->context = &context; |
| } |
| packets *= param->iterations; |
| dev_dbg (&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++) { |
| status = usb_submit_urb (urbs [i], SLAB_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]); |
| context.pending--; |
| } |
| } |
| spin_unlock_irq (&context.lock); |
| |
| wait_for_completion (&context.done); |
| return 0; |
| |
| fail: |
| for (i = 0; i < param->sglen; i++) { |
| if (urbs [i]) |
| simple_free_urb (urbs [i]); |
| } |
| return status; |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* 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. |
| */ |
| |
| 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. |
| |
| if (code != USBTEST_REQUEST) |
| return -EOPNOTSUPP; |
| |
| if (param->iterations <= 0 || param->length < 0 |
| || param->sglen < 0 || param->vary < 0) |
| return -EINVAL; |
| |
| if (down_interruptible (&dev->sem)) |
| return -ERESTARTSYS; |
| |
| if (intf->dev.power.power_state.event != PM_EVENT_ON) { |
| up (&dev->sem); |
| return -EHOSTUNREACH; |
| } |
| |
| /* 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) { |
| up (&dev->sem); |
| 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); |
| up (&dev->sem); |
| 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_dbg (&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_dbg (&intf->dev, |
| "TEST 1: write %d bytes %u times\n", |
| param->length, param->iterations); |
| urb = simple_alloc_urb (udev, dev->out_pipe, param->length); |
| if (!urb) { |
| retval = -ENOMEM; |
| break; |
| } |
| // FIRMWARE: bulk sink (maybe accepts short writes) |
| retval = simple_io (urb, param->iterations, 0, 0, "test1"); |
| simple_free_urb (urb); |
| break; |
| case 2: |
| if (dev->in_pipe == 0) |
| break; |
| dev_dbg (&intf->dev, |
| "TEST 2: read %d bytes %u times\n", |
| param->length, param->iterations); |
| urb = simple_alloc_urb (udev, dev->in_pipe, param->length); |
| if (!urb) { |
| retval = -ENOMEM; |
| break; |
| } |
| // FIRMWARE: bulk source (maybe generates short writes) |
| retval = simple_io (urb, param->iterations, 0, 0, "test2"); |
| simple_free_urb (urb); |
| break; |
| case 3: |
| if (dev->out_pipe == 0 || param->vary == 0) |
| break; |
| dev_dbg (&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); |
| if (!urb) { |
| retval = -ENOMEM; |
| break; |
| } |
| // FIRMWARE: bulk sink (maybe accepts short writes) |
| retval = simple_io (urb, param->iterations, param->vary, |
| 0, "test3"); |
| simple_free_urb (urb); |
| break; |
| case 4: |
| if (dev->in_pipe == 0 || param->vary == 0) |
| break; |
| dev_dbg (&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); |
| if (!urb) { |
| retval = -ENOMEM; |
| break; |
| } |
| // FIRMWARE: bulk source (maybe generates short writes) |
| retval = simple_io (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_dbg (&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 (udev, 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_dbg (&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 (udev, 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_dbg (&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 (udev, 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_dbg (&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 (udev, 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_dbg (&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) |
| dbg ("ch9 subset failed, iterations left %d", i); |
| break; |
| |
| /* queued control messaging */ |
| case 10: |
| if (param->sglen == 0) |
| break; |
| retval = 0; |
| dev_dbg (&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_dbg (&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_dbg (&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_dbg (&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_dbg (&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_dbg (&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) |
| DBG (dev, "halts failed, iterations left %d\n", i); |
| break; |
| |
| /* control write tests */ |
| case 14: |
| if (!dev->info->ctrl_out) |
| break; |
| dev_dbg (&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); |
| break; |
| |
| /* iso write tests */ |
| case 15: |
| if (dev->out_iso_pipe == 0 || param->sglen == 0) |
| break; |
| dev_dbg (&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); |
| break; |
| |
| /* iso read tests */ |
| case 16: |
| if (dev->in_iso_pipe == 0 || param->sglen == 0) |
| break; |
| dev_dbg (&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); |
| break; |
| |
| // FIXME unlink from queue (ring with N urbs) |
| |
| // FIXME scatterlist cancel (needs helper thread) |
| |
| } |
| do_gettimeofday (¶m->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; |
| } |
| up (&dev->sem); |
| return retval; |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static unsigned force_interrupt = 0; |
| 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; |
| |
| 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; |
| dbg ("matched module params, vend=0x%04x prod=0x%04x", |
| le16_to_cpu(udev->descriptor.idVendor), |
| le16_to_cpu(udev->descriptor.idProduct)); |
| } |
| #endif |
| |
| dev = kzalloc(sizeof(*dev), SLAB_KERNEL); |
| if (!dev) |
| return -ENOMEM; |
| info = (struct usbtest_info *) id->driver_info; |
| dev->info = info; |
| init_MUTEX (&dev->sem); |
| |
| dev->intf = intf; |
| |
| /* cacheline-aligned scratch for i/o */ |
| if ((dev->buf = kmalloc (TBUF_SIZE, SLAB_KERNEL)) == 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 = ""; |
| 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 (info->autoconf) { |
| int status; |
| |
| status = get_endpoints (dev, intf); |
| if (status < 0) { |
| dbg ("couldn't get endpoints, %d\n", status); |
| 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"; |
| } |
| |
| usb_set_intfdata (intf, dev); |
| dev_info (&intf->dev, "%s\n", info->name); |
| dev_info (&intf->dev, "%s speed {control%s%s%s%s%s} tests%s\n", |
| ({ char *tmp; |
| switch (udev->speed) { |
| case USB_SPEED_LOW: tmp = "low"; break; |
| case USB_SPEED_FULL: tmp = "full"; break; |
| case USB_SPEED_HIGH: tmp = "high"; break; |
| default: tmp = "unknown"; break; |
| }; tmp; }), |
| info->ctrl_out ? " in/out" : "", |
| rtest, wtest, |
| irtest, iwtest, |
| 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); |
| |
| down (&dev->sem); |
| |
| 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, |
| .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 |
| |
| // FIXME remove this |
| static struct usbtest_info hact_info = { |
| .name = "FX2/hact", |
| //.ep_in = 6, |
| .ep_out = 2, |
| .alt = -1, |
| }; |
| |
| |
| static struct usb_device_id id_table [] = { |
| |
| { USB_DEVICE (0x0547, 0x1002), |
| .driver_info = (unsigned long) &hact_info, |
| }, |
| |
| /*-------------------------------------------------------------*/ |
| |
| /* 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, |
| .ioctl = usbtest_ioctl, |
| .disconnect = usbtest_disconnect, |
| .suspend = usbtest_suspend, |
| .resume = usbtest_resume, |
| }; |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static int __init usbtest_init (void) |
| { |
| #ifdef GENERIC |
| if (vendor) |
| dbg ("params: vend=0x%04x prod=0x%04x", 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"); |
| |