#include "gadget_chips.h"
#include "u_f.h"
+#define USB_MS_TO_SS_INTERVAL(x) USB_MS_TO_HS_INTERVAL(x)
+
+enum eptype {
+ EP_CONTROL = 0,
+ EP_BULK,
+ EP_ISOC,
+ EP_INTERRUPT,
+};
+
/*
* SOURCE/SINK FUNCTION ... a primary testing vehicle for USB peripheral
* controller drivers.
struct usb_ep *out_ep;
struct usb_ep *iso_in_ep;
struct usb_ep *iso_out_ep;
+ struct usb_ep *int_in_ep;
+ struct usb_ep *int_out_ep;
int cur_alt;
};
static unsigned isoc_maxpacket;
static unsigned isoc_mult;
static unsigned isoc_maxburst;
+static unsigned int_interval; /* In ms */
+static unsigned int_maxpacket;
+static unsigned int_mult;
+static unsigned int_maxburst;
static unsigned buflen;
/*-------------------------------------------------------------------------*/
/* .iInterface = DYNAMIC */
};
+static struct usb_interface_descriptor source_sink_intf_alt2 = {
+ .bLength = USB_DT_INTERFACE_SIZE,
+ .bDescriptorType = USB_DT_INTERFACE,
+
+ .bAlternateSetting = 2,
+ .bNumEndpoints = 2,
+ .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
+ /* .iInterface = DYNAMIC */
+};
+
/* full speed support: */
static struct usb_endpoint_descriptor fs_source_desc = {
.bInterval = 4,
};
+static struct usb_endpoint_descriptor fs_int_source_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = cpu_to_le16(64),
+ .bInterval = GZERO_INT_INTERVAL,
+};
+
+static struct usb_endpoint_descriptor fs_int_sink_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bEndpointAddress = USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = cpu_to_le16(64),
+ .bInterval = GZERO_INT_INTERVAL,
+};
+
static struct usb_descriptor_header *fs_source_sink_descs[] = {
(struct usb_descriptor_header *) &source_sink_intf_alt0,
(struct usb_descriptor_header *) &fs_sink_desc,
(struct usb_descriptor_header *) &fs_source_desc,
(struct usb_descriptor_header *) &fs_iso_sink_desc,
(struct usb_descriptor_header *) &fs_iso_source_desc,
+ (struct usb_descriptor_header *) &source_sink_intf_alt2,
+#define FS_ALT_IFC_2_OFFSET 8
+ (struct usb_descriptor_header *) &fs_int_sink_desc,
+ (struct usb_descriptor_header *) &fs_int_source_desc,
NULL,
};
.bInterval = 4,
};
+static struct usb_endpoint_descriptor hs_int_source_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = cpu_to_le16(1024),
+ .bInterval = USB_MS_TO_HS_INTERVAL(GZERO_INT_INTERVAL),
+};
+
+static struct usb_endpoint_descriptor hs_int_sink_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = cpu_to_le16(1024),
+ .bInterval = USB_MS_TO_HS_INTERVAL(GZERO_INT_INTERVAL),
+};
+
static struct usb_descriptor_header *hs_source_sink_descs[] = {
(struct usb_descriptor_header *) &source_sink_intf_alt0,
(struct usb_descriptor_header *) &hs_source_desc,
(struct usb_descriptor_header *) &hs_sink_desc,
(struct usb_descriptor_header *) &hs_iso_source_desc,
(struct usb_descriptor_header *) &hs_iso_sink_desc,
+ (struct usb_descriptor_header *) &source_sink_intf_alt2,
+#define HS_ALT_IFC_2_OFFSET 8
+ (struct usb_descriptor_header *) &hs_int_source_desc,
+ (struct usb_descriptor_header *) &hs_int_sink_desc,
NULL,
};
.wBytesPerInterval = cpu_to_le16(1024),
};
+static struct usb_endpoint_descriptor ss_int_source_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = cpu_to_le16(1024),
+ .bInterval = USB_MS_TO_SS_INTERVAL(GZERO_INT_INTERVAL),
+};
+
+struct usb_ss_ep_comp_descriptor ss_int_source_comp_desc = {
+ .bLength = USB_DT_SS_EP_COMP_SIZE,
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ .wBytesPerInterval = cpu_to_le16(1024),
+};
+
+static struct usb_endpoint_descriptor ss_int_sink_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = cpu_to_le16(1024),
+ .bInterval = USB_MS_TO_SS_INTERVAL(GZERO_INT_INTERVAL),
+};
+
+struct usb_ss_ep_comp_descriptor ss_int_sink_comp_desc = {
+ .bLength = USB_DT_SS_EP_COMP_SIZE,
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ .wBytesPerInterval = cpu_to_le16(1024),
+};
+
static struct usb_descriptor_header *ss_source_sink_descs[] = {
(struct usb_descriptor_header *) &source_sink_intf_alt0,
(struct usb_descriptor_header *) &ss_source_desc,
(struct usb_descriptor_header *) &ss_iso_source_comp_desc,
(struct usb_descriptor_header *) &ss_iso_sink_desc,
(struct usb_descriptor_header *) &ss_iso_sink_comp_desc,
+ (struct usb_descriptor_header *) &source_sink_intf_alt2,
+#define SS_ALT_IFC_2_OFFSET 14
+ (struct usb_descriptor_header *) &ss_int_source_desc,
+ (struct usb_descriptor_header *) &ss_int_source_comp_desc,
+ (struct usb_descriptor_header *) &ss_int_sink_desc,
+ (struct usb_descriptor_header *) &ss_int_sink_comp_desc,
NULL,
};
};
/*-------------------------------------------------------------------------*/
+static const char *get_ep_string(enum eptype ep_type)
+{
+ switch (ep_type) {
+ case EP_ISOC:
+ return "ISOC-";
+ case EP_INTERRUPT:
+ return "INTERRUPT-";
+ case EP_CONTROL:
+ return "CTRL-";
+ case EP_BULK:
+ return "BULK-";
+ default:
+ return "UNKNOWN-";
+ }
+}
static inline struct usb_request *ss_alloc_ep_req(struct usb_ep *ep, int len)
{
void disable_endpoints(struct usb_composite_dev *cdev,
struct usb_ep *in, struct usb_ep *out,
- struct usb_ep *iso_in, struct usb_ep *iso_out)
+ struct usb_ep *iso_in, struct usb_ep *iso_out,
+ struct usb_ep *int_in, struct usb_ep *int_out)
{
disable_ep(cdev, in);
disable_ep(cdev, out);
disable_ep(cdev, iso_in);
if (iso_out)
disable_ep(cdev, iso_out);
+ if (int_in)
+ disable_ep(cdev, int_in);
+ if (int_out)
+ disable_ep(cdev, int_out);
}
static int
return id;
source_sink_intf_alt0.bInterfaceNumber = id;
source_sink_intf_alt1.bInterfaceNumber = id;
+ source_sink_intf_alt2.bInterfaceNumber = id;
/* allocate bulk endpoints */
ss->in_ep = usb_ep_autoconfig(cdev->gadget, &fs_source_desc);
if (isoc_maxpacket > 1024)
isoc_maxpacket = 1024;
+ /* sanity check the interrupt module parameters */
+ if (int_interval < 1)
+ int_interval = 1;
+ if (int_interval > 4096)
+ int_interval = 4096;
+ if (int_mult > 2)
+ int_mult = 2;
+ if (int_maxburst > 15)
+ int_maxburst = 15;
+
+ /* fill in the FS interrupt descriptors from the module parameters */
+ fs_int_source_desc.wMaxPacketSize = int_maxpacket > 64 ?
+ 64 : int_maxpacket;
+ fs_int_source_desc.bInterval = int_interval > 255 ?
+ 255 : int_interval;
+ fs_int_sink_desc.wMaxPacketSize = int_maxpacket > 64 ?
+ 64 : int_maxpacket;
+ fs_int_sink_desc.bInterval = int_interval > 255 ?
+ 255 : int_interval;
+
+ /* allocate int endpoints */
+ ss->int_in_ep = usb_ep_autoconfig(cdev->gadget, &fs_int_source_desc);
+ if (!ss->int_in_ep)
+ goto no_int;
+ ss->int_in_ep->driver_data = cdev; /* claim */
+
+ ss->int_out_ep = usb_ep_autoconfig(cdev->gadget, &fs_int_sink_desc);
+ if (ss->int_out_ep) {
+ ss->int_out_ep->driver_data = cdev; /* claim */
+ } else {
+ ss->int_in_ep->driver_data = NULL;
+ ss->int_in_ep = NULL;
+no_int:
+ fs_source_sink_descs[FS_ALT_IFC_2_OFFSET] = NULL;
+ hs_source_sink_descs[HS_ALT_IFC_2_OFFSET] = NULL;
+ ss_source_sink_descs[SS_ALT_IFC_2_OFFSET] = NULL;
+ }
+
+ if (int_maxpacket > 1024)
+ int_maxpacket = 1024;
+
/* support high speed hardware */
hs_source_desc.bEndpointAddress = fs_source_desc.bEndpointAddress;
hs_sink_desc.bEndpointAddress = fs_sink_desc.bEndpointAddress;
/*
- * Fill in the HS isoc descriptors from the module parameters.
- * We assume that the user knows what they are doing and won't
- * give parameters that their UDC doesn't support.
+ * Fill in the HS isoc and interrupt descriptors from the module
+ * parameters. We assume that the user knows what they are doing and
+ * won't give parameters that their UDC doesn't support.
*/
hs_iso_source_desc.wMaxPacketSize = isoc_maxpacket;
hs_iso_source_desc.wMaxPacketSize |= isoc_mult << 11;
hs_iso_sink_desc.bInterval = isoc_interval;
hs_iso_sink_desc.bEndpointAddress = fs_iso_sink_desc.bEndpointAddress;
+ hs_int_source_desc.wMaxPacketSize = int_maxpacket;
+ hs_int_source_desc.wMaxPacketSize |= int_mult << 11;
+ hs_int_source_desc.bInterval = USB_MS_TO_HS_INTERVAL(int_interval);
+ hs_int_source_desc.bEndpointAddress =
+ fs_int_source_desc.bEndpointAddress;
+
+ hs_int_sink_desc.wMaxPacketSize = int_maxpacket;
+ hs_int_sink_desc.wMaxPacketSize |= int_mult << 11;
+ hs_int_sink_desc.bInterval = USB_MS_TO_HS_INTERVAL(int_interval);
+ hs_int_sink_desc.bEndpointAddress = fs_int_sink_desc.bEndpointAddress;
+
/* support super speed hardware */
ss_source_desc.bEndpointAddress =
fs_source_desc.bEndpointAddress;
fs_sink_desc.bEndpointAddress;
/*
- * Fill in the SS isoc descriptors from the module parameters.
- * We assume that the user knows what they are doing and won't
- * give parameters that their UDC doesn't support.
+ * Fill in the SS isoc and interrupt descriptors from the module
+ * parameters. We assume that the user knows what they are doing and
+ * won't give parameters that their UDC doesn't support.
*/
ss_iso_source_desc.wMaxPacketSize = isoc_maxpacket;
ss_iso_source_desc.bInterval = isoc_interval;
isoc_maxpacket * (isoc_mult + 1) * (isoc_maxburst + 1);
ss_iso_sink_desc.bEndpointAddress = fs_iso_sink_desc.bEndpointAddress;
+ ss_int_source_desc.wMaxPacketSize = int_maxpacket;
+ ss_int_source_desc.bInterval = USB_MS_TO_SS_INTERVAL(int_interval);
+ ss_int_source_comp_desc.bmAttributes = int_mult;
+ ss_int_source_comp_desc.bMaxBurst = int_maxburst;
+ ss_int_source_comp_desc.wBytesPerInterval =
+ int_maxpacket * (int_mult + 1) * (int_maxburst + 1);
+ ss_int_source_desc.bEndpointAddress =
+ fs_int_source_desc.bEndpointAddress;
+
+ ss_int_sink_desc.wMaxPacketSize = int_maxpacket;
+ ss_int_sink_desc.bInterval = USB_MS_TO_SS_INTERVAL(int_interval);
+ ss_int_sink_comp_desc.bmAttributes = int_mult;
+ ss_int_sink_comp_desc.bMaxBurst = int_maxburst;
+ ss_int_sink_comp_desc.wBytesPerInterval =
+ int_maxpacket * (int_mult + 1) * (int_maxburst + 1);
+ ss_int_sink_desc.bEndpointAddress = fs_int_sink_desc.bEndpointAddress;
+
ret = usb_assign_descriptors(f, fs_source_sink_descs,
hs_source_sink_descs, ss_source_sink_descs);
if (ret)
return ret;
- DBG(cdev, "%s speed %s: IN/%s, OUT/%s, ISO-IN/%s, ISO-OUT/%s\n",
+ DBG(cdev, "%s speed %s: IN/%s, OUT/%s, ISO-IN/%s, ISO-OUT/%s, "
+ "INT-IN/%s, INT-OUT/%s\n",
(gadget_is_superspeed(c->cdev->gadget) ? "super" :
(gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full")),
f->name, ss->in_ep->name, ss->out_ep->name,
ss->iso_in_ep ? ss->iso_in_ep->name : "<none>",
- ss->iso_out_ep ? ss->iso_out_ep->name : "<none>");
+ ss->iso_out_ep ? ss->iso_out_ep->name : "<none>",
+ ss->int_in_ep ? ss->int_in_ep->name : "<none>",
+ ss->int_out_ep ? ss->int_out_ep->name : "<none>");
return 0;
}
}
static int source_sink_start_ep(struct f_sourcesink *ss, bool is_in,
- bool is_iso, int speed)
+ enum eptype ep_type, int speed)
{
struct usb_ep *ep;
struct usb_request *req;
int i, size, status;
for (i = 0; i < 8; i++) {
- if (is_iso) {
+ switch (ep_type) {
+ case EP_ISOC:
switch (speed) {
case USB_SPEED_SUPER:
size = isoc_maxpacket * (isoc_mult + 1) *
}
ep = is_in ? ss->iso_in_ep : ss->iso_out_ep;
req = ss_alloc_ep_req(ep, size);
- } else {
+ break;
+ case EP_INTERRUPT:
+ switch (speed) {
+ case USB_SPEED_SUPER:
+ size = int_maxpacket * (int_mult + 1) *
+ (int_maxburst + 1);
+ break;
+ case USB_SPEED_HIGH:
+ size = int_maxpacket * (int_mult + 1);
+ break;
+ default:
+ size = int_maxpacket > 1023 ?
+ 1023 : int_maxpacket;
+ break;
+ }
+ ep = is_in ? ss->int_in_ep : ss->int_out_ep;
+ req = ss_alloc_ep_req(ep, size);
+ break;
+ default:
ep = is_in ? ss->in_ep : ss->out_ep;
req = ss_alloc_ep_req(ep, 0);
+ break;
}
if (!req)
cdev = ss->function.config->cdev;
ERROR(cdev, "start %s%s %s --> %d\n",
- is_iso ? "ISO-" : "", is_in ? "IN" : "OUT",
- ep->name, status);
+ get_ep_string(ep_type), is_in ? "IN" : "OUT",
+ ep->name, status);
free_ep_req(ep, req);
}
- if (!is_iso)
+ if (!(ep_type == EP_ISOC))
break;
}
cdev = ss->function.config->cdev;
disable_endpoints(cdev, ss->in_ep, ss->out_ep, ss->iso_in_ep,
- ss->iso_out_ep);
+ ss->iso_out_ep, ss->int_in_ep, ss->int_out_ep);
VDBG(cdev, "%s disabled\n", ss->function.name);
}
int speed = cdev->gadget->speed;
struct usb_ep *ep;
+ if (alt == 2) {
+ /* Configure for periodic interrupt endpoint */
+ ep = ss->int_in_ep;
+ if (ep) {
+ result = config_ep_by_speed(cdev->gadget,
+ &(ss->function), ep);
+ if (result)
+ return result;
+
+ result = usb_ep_enable(ep);
+ if (result < 0)
+ return result;
+
+ ep->driver_data = ss;
+ result = source_sink_start_ep(ss, true, EP_INTERRUPT,
+ speed);
+ if (result < 0) {
+fail1:
+ ep = ss->int_in_ep;
+ if (ep) {
+ usb_ep_disable(ep);
+ ep->driver_data = NULL;
+ }
+ return result;
+ }
+ }
+
+ /*
+ * one interrupt endpoint reads (sinks) anything OUT (from the
+ * host)
+ */
+ ep = ss->int_out_ep;
+ if (ep) {
+ result = config_ep_by_speed(cdev->gadget,
+ &(ss->function), ep);
+ if (result)
+ goto fail1;
+
+ result = usb_ep_enable(ep);
+ if (result < 0)
+ goto fail1;
+
+ ep->driver_data = ss;
+ result = source_sink_start_ep(ss, false, EP_INTERRUPT,
+ speed);
+ if (result < 0) {
+ ep = ss->int_out_ep;
+ usb_ep_disable(ep);
+ ep->driver_data = NULL;
+ goto fail1;
+ }
+ }
+
+ goto out;
+ }
+
/* one bulk endpoint writes (sources) zeroes IN (to the host) */
ep = ss->in_ep;
result = config_ep_by_speed(cdev->gadget, &(ss->function), ep);
return result;
ep->driver_data = ss;
- result = source_sink_start_ep(ss, true, false, speed);
+ result = source_sink_start_ep(ss, true, EP_BULK, speed);
if (result < 0) {
fail:
ep = ss->in_ep;
goto fail;
ep->driver_data = ss;
- result = source_sink_start_ep(ss, false, false, speed);
+ result = source_sink_start_ep(ss, false, EP_BULK, speed);
if (result < 0) {
fail2:
ep = ss->out_ep;
goto fail2;
ep->driver_data = ss;
- result = source_sink_start_ep(ss, true, true, speed);
+ result = source_sink_start_ep(ss, true, EP_ISOC, speed);
if (result < 0) {
fail3:
ep = ss->iso_in_ep;
goto fail3;
ep->driver_data = ss;
- result = source_sink_start_ep(ss, false, true, speed);
+ result = source_sink_start_ep(ss, false, EP_ISOC, speed);
if (result < 0) {
usb_ep_disable(ep);
ep->driver_data = NULL;
goto fail3;
}
}
+
out:
ss->cur_alt = alt;
if (ss->in_ep->driver_data)
disable_source_sink(ss);
+ else if (alt == 2 && ss->int_in_ep->driver_data)
+ disable_source_sink(ss);
return enable_source_sink(cdev, ss, alt);
}
isoc_maxpacket = ss_opts->isoc_maxpacket;
isoc_mult = ss_opts->isoc_mult;
isoc_maxburst = ss_opts->isoc_maxburst;
+ int_interval = ss_opts->int_interval;
+ int_maxpacket = ss_opts->int_maxpacket;
+ int_mult = ss_opts->int_mult;
+ int_maxburst = ss_opts->int_maxburst;
buflen = ss_opts->bulk_buflen;
ss->function.name = "source/sink";
f_ss_opts_bulk_buflen_show,
f_ss_opts_bulk_buflen_store);
+static ssize_t f_ss_opts_int_interval_show(struct f_ss_opts *opts, char *page)
+{
+ int result;
+
+ mutex_lock(&opts->lock);
+ result = sprintf(page, "%d", opts->int_interval);
+ mutex_unlock(&opts->lock);
+
+ return result;
+}
+
+static ssize_t f_ss_opts_int_interval_store(struct f_ss_opts *opts,
+ const char *page, size_t len)
+{
+ int ret;
+ u8 num;
+
+ mutex_lock(&opts->lock);
+ if (opts->refcnt) {
+ ret = -EBUSY;
+ goto end;
+ }
+
+ ret = kstrtou8(page, 0, &num);
+ if (ret)
+ goto end;
+
+ if (num > 4096) {
+ ret = -EINVAL;
+ goto end;
+ }
+
+ opts->int_interval = num;
+ ret = len;
+end:
+ mutex_unlock(&opts->lock);
+ return ret;
+}
+
+static struct f_ss_opts_attribute f_ss_opts_int_interval =
+ __CONFIGFS_ATTR(int_interval, S_IRUGO | S_IWUSR,
+ f_ss_opts_int_interval_show,
+ f_ss_opts_int_interval_store);
+
+static ssize_t f_ss_opts_int_maxpacket_show(struct f_ss_opts *opts, char *page)
+{
+ int result;
+
+ mutex_lock(&opts->lock);
+ result = sprintf(page, "%d", opts->int_maxpacket);
+ mutex_unlock(&opts->lock);
+
+ return result;
+}
+
+static ssize_t f_ss_opts_int_maxpacket_store(struct f_ss_opts *opts,
+ const char *page, size_t len)
+{
+ int ret;
+ u16 num;
+
+ mutex_lock(&opts->lock);
+ if (opts->refcnt) {
+ ret = -EBUSY;
+ goto end;
+ }
+
+ ret = kstrtou16(page, 0, &num);
+ if (ret)
+ goto end;
+
+ if (num > 1024) {
+ ret = -EINVAL;
+ goto end;
+ }
+
+ opts->int_maxpacket = num;
+ ret = len;
+end:
+ mutex_unlock(&opts->lock);
+ return ret;
+}
+
+static struct f_ss_opts_attribute f_ss_opts_int_maxpacket =
+ __CONFIGFS_ATTR(int_maxpacket, S_IRUGO | S_IWUSR,
+ f_ss_opts_int_maxpacket_show,
+ f_ss_opts_int_maxpacket_store);
+
+static ssize_t f_ss_opts_int_mult_show(struct f_ss_opts *opts, char *page)
+{
+ int result;
+
+ mutex_lock(&opts->lock);
+ result = sprintf(page, "%d", opts->int_mult);
+ mutex_unlock(&opts->lock);
+
+ return result;
+}
+
+static ssize_t f_ss_opts_int_mult_store(struct f_ss_opts *opts,
+ const char *page, size_t len)
+{
+ int ret;
+ u8 num;
+
+ mutex_lock(&opts->lock);
+ if (opts->refcnt) {
+ ret = -EBUSY;
+ goto end;
+ }
+
+ ret = kstrtou8(page, 0, &num);
+ if (ret)
+ goto end;
+
+ if (num > 2) {
+ ret = -EINVAL;
+ goto end;
+ }
+
+ opts->int_mult = num;
+ ret = len;
+end:
+ mutex_unlock(&opts->lock);
+ return ret;
+}
+
+static struct f_ss_opts_attribute f_ss_opts_int_mult =
+ __CONFIGFS_ATTR(int_mult, S_IRUGO | S_IWUSR,
+ f_ss_opts_int_mult_show,
+ f_ss_opts_int_mult_store);
+
+static ssize_t f_ss_opts_int_maxburst_show(struct f_ss_opts *opts, char *page)
+{
+ int result;
+
+ mutex_lock(&opts->lock);
+ result = sprintf(page, "%d", opts->int_maxburst);
+ mutex_unlock(&opts->lock);
+
+ return result;
+}
+
+static ssize_t f_ss_opts_int_maxburst_store(struct f_ss_opts *opts,
+ const char *page, size_t len)
+{
+ int ret;
+ u8 num;
+
+ mutex_lock(&opts->lock);
+ if (opts->refcnt) {
+ ret = -EBUSY;
+ goto end;
+ }
+
+ ret = kstrtou8(page, 0, &num);
+ if (ret)
+ goto end;
+
+ if (num > 15) {
+ ret = -EINVAL;
+ goto end;
+ }
+
+ opts->int_maxburst = num;
+ ret = len;
+end:
+ mutex_unlock(&opts->lock);
+ return ret;
+}
+
+static struct f_ss_opts_attribute f_ss_opts_int_maxburst =
+ __CONFIGFS_ATTR(int_maxburst, S_IRUGO | S_IWUSR,
+ f_ss_opts_int_maxburst_show,
+ f_ss_opts_int_maxburst_store);
+
static struct configfs_attribute *ss_attrs[] = {
&f_ss_opts_pattern.attr,
&f_ss_opts_isoc_interval.attr,
&f_ss_opts_isoc_mult.attr,
&f_ss_opts_isoc_maxburst.attr,
&f_ss_opts_bulk_buflen.attr,
+ &f_ss_opts_int_interval.attr,
+ &f_ss_opts_int_maxpacket.attr,
+ &f_ss_opts_int_mult.attr,
+ &f_ss_opts_int_maxburst.attr,
NULL,
};
ss_opts->isoc_interval = GZERO_ISOC_INTERVAL;
ss_opts->isoc_maxpacket = GZERO_ISOC_MAXPACKET;
ss_opts->bulk_buflen = GZERO_BULK_BUFLEN;
+ ss_opts->int_interval = GZERO_INT_INTERVAL;
+ ss_opts->int_maxpacket = GZERO_INT_MAXPACKET;
config_group_init_type_name(&ss_opts->func_inst.group, "",
&ss_func_type);
projects / linux-beck.git / commitdiff