*
* +--------+ pipes are reused for each uep.
* | udev 1 |-+- [uep 0 (dcp) ] --+ pipe will be switched when
- * +--------+ | | target device was changed
+ * +--------+ | | other device requested
* +- [uep 1 (bulk)] --|---+ +--------------+
* | +--------------> | pipe0 (dcp) |
- * +- [uep 2 (bulk)] --|---|---+ +--------------+
- * | | | | pipe1 (isoc) |
- * +--------+ | | | +--------------+
- * | udev 2 |-+- [uep 0 (dcp) ] --+ +-- |------> | pipe2 (bulk) |
- * +--------+ | | | | +--------------+
- * +- [uep 1 (int) ] --|-+ | +------> | pipe3 (bulk) |
- * | | | | +--------------+
- * +--------+ | +-|---|------> | pipe4 (int) |
- * | udev 3 |-+- [uep 0 (dcp) ] --+ | | +--------------+
- * +--------+ | | | | .... |
- * +- [uep 1 (bulk)] ------+ | | .... |
+ * +- [uep 2 (bulk)] -@ | +--------------+
+ * | | pipe1 (isoc) |
+ * +--------+ | +--------------+
+ * | udev 2 |-+- [uep 0 (dcp) ] -@ +----------> | pipe2 (bulk) |
+ * +--------+ | +--------------+
+ * +- [uep 1 (int) ] ----+ +------> | pipe3 (bulk) |
+ * | | +--------------+
+ * +--------+ +-----|------> | pipe4 (int) |
+ * | udev 3 |-+- [uep 0 (dcp) ] -@ | +--------------+
+ * +--------+ | | | .... |
+ * +- [uep 1 (bulk)] -@ | | .... |
* | |
* +- [uep 2 (bulk)]-----------+
+ *
+ * @ : uep requested free pipe, but all have been used.
+ * now it is waiting for free pipe
*/
/*
* struct
*/
-struct usbhsh_pipe_info {
- unsigned int usr_cnt; /* see usbhsh_endpoint_alloc() */
-};
-
struct usbhsh_request {
struct urb *urb;
struct usbhs_pkt pkt;
- struct list_head ureq_link; /* see hpriv :: ureq_link_xxx */
};
struct usbhsh_device {
};
struct usbhsh_ep {
- struct usbhs_pipe *pipe;
+ struct usbhs_pipe *pipe; /* attached pipe */
struct usbhsh_device *udev; /* attached udev */
+ struct usb_host_endpoint *ep;
struct list_head ep_list; /* list to usbhsh_device */
-
- int maxp;
};
#define USBHSH_DEVICE_MAX 10 /* see DEVADDn / DCPMAXP / PIPEMAXP */
struct usbhsh_device udev[USBHSH_DEVICE_MAX];
- struct usbhsh_pipe_info *pipe_info;
- int pipe_size;
-
u32 port_stat; /* USB_PORT_STAT_xxx */
struct completion setup_ack_done;
-
- /* see usbhsh_req_alloc/free */
- struct list_head ureq_link_active;
- struct list_head ureq_link_free;
};
#define usbhsh_priv_to_hpriv(priv) \
container_of(usbhs_mod_get(priv, USBHS_HOST), struct usbhsh_hpriv, mod)
-#define __usbhsh_for_each_hpipe(start, pos, h, i) \
- for (i = start, pos = (h)->hpipe + i; \
- i < (h)->hpipe_size; \
- i++, pos = (h)->hpipe + i)
-
-#define usbhsh_for_each_hpipe(pos, hpriv, i) \
- __usbhsh_for_each_hpipe(1, pos, hpriv, i)
-
-#define usbhsh_for_each_hpipe_with_dcp(pos, hpriv, i) \
- __usbhsh_for_each_hpipe(0, pos, hpriv, i)
-
#define __usbhsh_for_each_udev(start, pos, h, i) \
for (i = start, pos = (h)->udev + i; \
i < USBHSH_DEVICE_MAX; \
#define usbhsh_ep_to_uep(u) ((u)->hcpriv)
#define usbhsh_uep_to_pipe(u) ((u)->pipe)
#define usbhsh_uep_to_udev(u) ((u)->udev)
+#define usbhsh_uep_to_ep(u) ((u)->ep)
+
#define usbhsh_urb_to_ureq(u) ((u)->hcpriv)
#define usbhsh_urb_to_usbv(u) ((u)->dev)
#define usbhsh_usbv_to_udev(d) dev_get_drvdata(&(d)->dev)
#define usbhsh_udev_to_usbv(h) ((h)->usbv)
+#define usbhsh_udev_is_used(h) usbhsh_udev_to_usbv(h)
-#define usbhsh_pipe_info(p) ((p)->mod_private)
+#define usbhsh_pipe_to_uep(p) ((p)->mod_private)
+#define usbhsh_device_parent(d) (usbhsh_usbv_to_udev((d)->usbv->parent))
+#define usbhsh_device_hubport(d) ((d)->usbv->portnum)
#define usbhsh_device_number(h, d) ((int)((d) - (h)->udev))
#define usbhsh_device_nth(h, d) ((h)->udev + d)
#define usbhsh_device0(h) usbhsh_device_nth(h, 0)
#define usbhsh_port_stat_clear(h, s) ((h)->port_stat &= ~(s))
#define usbhsh_port_stat_get(h) ((h)->port_stat)
-#define usbhsh_pkt_to_req(p) \
+#define usbhsh_pkt_to_ureq(p) \
container_of((void *)p, struct usbhsh_request, pkt)
/*
* req alloc/free
*/
-static void usbhsh_req_list_init(struct usbhsh_hpriv *hpriv)
-{
- INIT_LIST_HEAD(&hpriv->ureq_link_active);
- INIT_LIST_HEAD(&hpriv->ureq_link_free);
-}
-
-static void usbhsh_req_list_quit(struct usbhsh_hpriv *hpriv)
-{
- struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
- struct device *dev = usbhsh_hcd_to_dev(hcd);
- struct usbhsh_request *ureq, *next;
-
- /* kfree all active ureq */
- list_for_each_entry_safe(ureq, next,
- &hpriv->ureq_link_active,
- ureq_link) {
- dev_err(dev, "active ureq (%p) is force freed\n", ureq);
- kfree(ureq);
- }
-
- /* kfree all free ureq */
- list_for_each_entry_safe(ureq, next, &hpriv->ureq_link_free, ureq_link)
- kfree(ureq);
-}
-
-static struct usbhsh_request *usbhsh_req_alloc(struct usbhsh_hpriv *hpriv,
+static struct usbhsh_request *usbhsh_ureq_alloc(struct usbhsh_hpriv *hpriv,
struct urb *urb,
gfp_t mem_flags)
{
struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
struct device *dev = usbhs_priv_to_dev(priv);
- if (list_empty(&hpriv->ureq_link_free)) {
- /*
- * create new one if there is no free ureq
- */
- ureq = kzalloc(sizeof(struct usbhsh_request), mem_flags);
- if (ureq)
- INIT_LIST_HEAD(&ureq->ureq_link);
- } else {
- /*
- * reuse "free" ureq if exist
- */
- ureq = list_entry(hpriv->ureq_link_free.next,
- struct usbhsh_request,
- ureq_link);
- if (ureq)
- list_del_init(&ureq->ureq_link);
- }
-
+ ureq = kzalloc(sizeof(struct usbhsh_request), mem_flags);
if (!ureq) {
dev_err(dev, "ureq alloc fail\n");
return NULL;
}
usbhs_pkt_init(&ureq->pkt);
-
- /*
- * push it to "active" list
- */
- list_add_tail(&ureq->ureq_link, &hpriv->ureq_link_active);
ureq->urb = urb;
+ usbhsh_urb_to_ureq(urb) = ureq;
return ureq;
}
-static void usbhsh_req_free(struct usbhsh_hpriv *hpriv,
+static void usbhsh_ureq_free(struct usbhsh_hpriv *hpriv,
struct usbhsh_request *ureq)
{
- struct usbhs_pkt *pkt = &ureq->pkt;
+ usbhsh_urb_to_ureq(ureq->urb) = NULL;
+ ureq->urb = NULL;
- usbhs_pkt_init(pkt);
+ kfree(ureq);
+}
+/*
+ * status
+ */
+static int usbhsh_is_running(struct usbhsh_hpriv *hpriv)
+{
/*
- * removed from "active" list,
- * and push it to "free" list
+ * we can decide some device is attached or not
+ * by checking mod.irq_attch
+ * see
+ * usbhsh_irq_attch()
+ * usbhsh_irq_dtch()
*/
- ureq->urb = NULL;
- list_del_init(&ureq->ureq_link);
- list_add_tail(&ureq->ureq_link, &hpriv->ureq_link_free);
+ return (hpriv->mod.irq_attch == NULL);
}
/*
- * device control
+ * pipe control
*/
-
-static int usbhsh_device_has_endpoint(struct usbhsh_device *udev)
+static void usbhsh_endpoint_sequence_save(struct usbhsh_hpriv *hpriv,
+ struct urb *urb,
+ struct usbhs_pkt *pkt)
{
- return !list_empty(&udev->ep_list_head);
-}
+ int len = urb->actual_length;
+ int maxp = usb_endpoint_maxp(&urb->ep->desc);
+ int t = 0;
-static struct usbhsh_device *usbhsh_device_alloc(struct usbhsh_hpriv *hpriv,
- struct urb *urb)
-{
- struct usbhsh_device *udev = NULL;
- struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
- struct device *dev = usbhsh_hcd_to_dev(hcd);
- struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
- struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
- int i;
+ /* DCP is out of sequence control */
+ if (usb_pipecontrol(urb->pipe))
+ return;
/*
- * device 0
+ * renesas_usbhs pipe has a limitation in a number.
+ * So, driver should re-use the limited pipe for each device/endpoint.
+ * DATA0/1 sequence should be saved for it.
+ * see [image of mod_host]
+ * [HARDWARE LIMITATION]
*/
- if (0 == usb_pipedevice(urb->pipe)) {
- udev = usbhsh_device0(hpriv);
- goto usbhsh_device_find;
- }
/*
- * find unused device
+ * next sequence depends on actual_length
+ *
+ * ex) actual_length = 1147, maxp = 512
+ * data0 : 512
+ * data1 : 512
+ * data0 : 123
+ * data1 is the next sequence
*/
- usbhsh_for_each_udev(udev, hpriv, i) {
- if (usbhsh_udev_to_usbv(udev))
- continue;
- goto usbhsh_device_find;
+ t = len / maxp;
+ if (len % maxp)
+ t++;
+ if (pkt->zero)
+ t++;
+ t %= 2;
+
+ if (t)
+ usb_dotoggle(urb->dev,
+ usb_pipeendpoint(urb->pipe),
+ usb_pipeout(urb->pipe));
+}
+
+static struct usbhsh_device *usbhsh_device_get(struct usbhsh_hpriv *hpriv,
+ struct urb *urb);
+
+static int usbhsh_pipe_attach(struct usbhsh_hpriv *hpriv,
+ struct urb *urb)
+{
+ struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+ struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep);
+ struct usbhsh_device *udev = usbhsh_device_get(hpriv, urb);
+ struct usbhs_pipe *pipe;
+ struct usb_endpoint_descriptor *desc = &urb->ep->desc;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ unsigned long flags;
+ int dir_in_req = !!usb_pipein(urb->pipe);
+ int is_dcp = usb_endpoint_xfer_control(desc);
+ int i, dir_in;
+ int ret = -EBUSY;
+
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
+
+ if (unlikely(usbhsh_uep_to_pipe(uep))) {
+ dev_err(dev, "uep already has pipe\n");
+ goto usbhsh_pipe_attach_done;
}
- dev_err(dev, "no free usbhsh_device\n");
+ usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
- return NULL;
+ /* check pipe type */
+ if (!usbhs_pipe_type_is(pipe, usb_endpoint_type(desc)))
+ continue;
-usbhsh_device_find:
- if (usbhsh_device_has_endpoint(udev))
- dev_warn(dev, "udev have old endpoint\n");
+ /* check pipe direction if normal pipe */
+ if (!is_dcp) {
+ dir_in = !!usbhs_pipe_is_dir_in(pipe);
+ if (0 != (dir_in - dir_in_req))
+ continue;
+ }
- /* uep will be attached */
- INIT_LIST_HEAD(&udev->ep_list_head);
+ /* check pipe is free */
+ if (usbhsh_pipe_to_uep(pipe))
+ continue;
- /*
- * usbhsh_usbv_to_udev()
- * usbhsh_udev_to_usbv()
- * will be enable
- */
- dev_set_drvdata(&usbv->dev, udev);
- udev->usbv = usbv;
+ /*
+ * attach pipe to uep
+ *
+ * usbhs_pipe_config_update() should be called after
+ * usbhs_set_device_config()
+ * see
+ * DCPMAXP/PIPEMAXP
+ */
+ usbhsh_uep_to_pipe(uep) = pipe;
+ usbhsh_pipe_to_uep(pipe) = uep;
- /* set device config */
- usbhs_set_device_speed(priv,
- usbhsh_device_number(hpriv, udev),
- usbhsh_device_number(hpriv, udev),
- 0, /* FIXME no parent */
- usbv->speed);
+ usbhs_pipe_config_update(pipe,
+ usbhsh_device_number(hpriv, udev),
+ usb_endpoint_num(desc),
+ usb_endpoint_maxp(desc));
- dev_dbg(dev, "%s [%d](%p)\n", __func__,
- usbhsh_device_number(hpriv, udev), udev);
+ dev_dbg(dev, "%s [%d-%d(%s:%s)]\n", __func__,
+ usbhsh_device_number(hpriv, udev),
+ usb_endpoint_num(desc),
+ usbhs_pipe_name(pipe),
+ dir_in_req ? "in" : "out");
- return udev;
+ ret = 0;
+ break;
+ }
+
+usbhsh_pipe_attach_done:
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ******************/
+
+ return ret;
}
-static void usbhsh_device_free(struct usbhsh_hpriv *hpriv,
- struct usbhsh_device *udev)
+static void usbhsh_pipe_detach(struct usbhsh_hpriv *hpriv,
+ struct usbhsh_ep *uep)
{
- struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
- struct device *dev = usbhsh_hcd_to_dev(hcd);
- struct usb_device *usbv = usbhsh_udev_to_usbv(udev);
+ struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+ struct usbhs_pipe *pipe;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ unsigned long flags;
- dev_dbg(dev, "%s [%d](%p)\n", __func__,
- usbhsh_device_number(hpriv, udev), udev);
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
- if (usbhsh_device_has_endpoint(udev))
- dev_warn(dev, "udev still have endpoint\n");
+ pipe = usbhsh_uep_to_pipe(uep);
- /*
- * usbhsh_usbv_to_udev()
- * usbhsh_udev_to_usbv()
- * will be disable
- */
- dev_set_drvdata(&usbv->dev, NULL);
- udev->usbv = NULL;
+ if (unlikely(!pipe)) {
+ dev_err(dev, "uep doens't have pipe\n");
+ } else {
+ struct usb_host_endpoint *ep = usbhsh_uep_to_ep(uep);
+ struct usbhsh_device *udev = usbhsh_uep_to_udev(uep);
+
+ /* detach pipe from uep */
+ usbhsh_uep_to_pipe(uep) = NULL;
+ usbhsh_pipe_to_uep(pipe) = NULL;
+
+ dev_dbg(dev, "%s [%d-%d(%s)]\n", __func__,
+ usbhsh_device_number(hpriv, udev),
+ usb_endpoint_num(&ep->desc),
+ usbhs_pipe_name(pipe));
+ }
+
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ******************/
}
/*
- * end-point control
+ * endpoint control
*/
-struct usbhsh_ep *usbhsh_endpoint_alloc(struct usbhsh_hpriv *hpriv,
- struct usbhsh_device *udev,
- struct usb_host_endpoint *ep,
- int dir_in_req,
- gfp_t mem_flags)
+static int usbhsh_endpoint_attach(struct usbhsh_hpriv *hpriv,
+ struct urb *urb,
+ gfp_t mem_flags)
{
struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
- struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
+ struct usbhsh_device *udev = usbhsh_device_get(hpriv, urb);
+ struct usb_host_endpoint *ep = urb->ep;
struct usbhsh_ep *uep;
- struct usbhsh_pipe_info *info;
- struct usbhs_pipe *pipe, *best_pipe;
- struct device *dev = usbhsh_hcd_to_dev(hcd);
+ struct device *dev = usbhs_priv_to_dev(priv);
struct usb_endpoint_descriptor *desc = &ep->desc;
- int type, i, dir_in;
- unsigned int min_usr;
-
- dir_in_req = !!dir_in_req;
+ unsigned long flags;
uep = kzalloc(sizeof(struct usbhsh_ep), mem_flags);
if (!uep) {
dev_err(dev, "usbhsh_ep alloc fail\n");
- return NULL;
+ return -ENOMEM;
}
- if (usb_endpoint_xfer_control(desc)) {
- best_pipe = usbhsh_hpriv_to_dcp(hpriv);
- goto usbhsh_endpoint_alloc_find_pipe;
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
+
+ /*
+ * init endpoint
+ */
+ INIT_LIST_HEAD(&uep->ep_list);
+ list_add_tail(&uep->ep_list, &udev->ep_list_head);
+
+ usbhsh_uep_to_udev(uep) = udev;
+ usbhsh_uep_to_ep(uep) = ep;
+ usbhsh_ep_to_uep(ep) = uep;
+
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ******************/
+
+ dev_dbg(dev, "%s [%d-%d]\n", __func__,
+ usbhsh_device_number(hpriv, udev),
+ usb_endpoint_num(desc));
+
+ return 0;
+}
+
+static void usbhsh_endpoint_detach(struct usbhsh_hpriv *hpriv,
+ struct usb_host_endpoint *ep)
+{
+ struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+ struct device *dev = usbhs_priv_to_dev(priv);
+ struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep);
+ unsigned long flags;
+
+ if (!uep)
+ return;
+
+ dev_dbg(dev, "%s [%d-%d]\n", __func__,
+ usbhsh_device_number(hpriv, usbhsh_uep_to_udev(uep)),
+ usb_endpoint_num(&ep->desc));
+
+ if (usbhsh_uep_to_pipe(uep))
+ usbhsh_pipe_detach(hpriv, uep);
+
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
+
+ /* remove this endpoint from udev */
+ list_del_init(&uep->ep_list);
+
+ usbhsh_uep_to_udev(uep) = NULL;
+ usbhsh_uep_to_ep(uep) = NULL;
+ usbhsh_ep_to_uep(ep) = NULL;
+
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ******************/
+
+ kfree(uep);
+}
+
+static void usbhsh_endpoint_detach_all(struct usbhsh_hpriv *hpriv,
+ struct usbhsh_device *udev)
+{
+ struct usbhsh_ep *uep, *next;
+
+ list_for_each_entry_safe(uep, next, &udev->ep_list_head, ep_list)
+ usbhsh_endpoint_detach(hpriv, usbhsh_uep_to_ep(uep));
+}
+
+/*
+ * device control
+ */
+static int usbhsh_connected_to_rhdev(struct usb_hcd *hcd,
+ struct usbhsh_device *udev)
+{
+ struct usb_device *usbv = usbhsh_udev_to_usbv(udev);
+
+ return hcd->self.root_hub == usbv->parent;
+}
+
+static int usbhsh_device_has_endpoint(struct usbhsh_device *udev)
+{
+ return !list_empty(&udev->ep_list_head);
+}
+
+static struct usbhsh_device *usbhsh_device_get(struct usbhsh_hpriv *hpriv,
+ struct urb *urb)
+{
+ struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
+ struct usbhsh_device *udev = usbhsh_usbv_to_udev(usbv);
+
+ /* usbhsh_device_attach() is still not called */
+ if (!udev)
+ return NULL;
+
+ /* if it is device0, return it */
+ if (0 == usb_pipedevice(urb->pipe))
+ return usbhsh_device0(hpriv);
+
+ /* return attached device */
+ return udev;
+}
+
+static struct usbhsh_device *usbhsh_device_attach(struct usbhsh_hpriv *hpriv,
+ struct urb *urb)
+{
+ struct usbhsh_device *udev = NULL;
+ struct usbhsh_device *udev0 = usbhsh_device0(hpriv);
+ struct usbhsh_device *pos;
+ struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
+ struct device *dev = usbhsh_hcd_to_dev(hcd);
+ struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
+ struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+ unsigned long flags;
+ u16 upphub, hubport;
+ int i;
+
+ /*
+ * This function should be called only while urb is pointing to device0.
+ * It will attach unused usbhsh_device to urb (usbv),
+ * and initialize device0.
+ * You can use usbhsh_device_get() to get "current" udev,
+ * and usbhsh_usbv_to_udev() is for "attached" udev.
+ */
+ if (0 != usb_pipedevice(urb->pipe)) {
+ dev_err(dev, "%s fail: urb isn't pointing device0\n", __func__);
+ return NULL;
}
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
+
/*
- * find best pipe for endpoint
- * see
- * HARDWARE LIMITATION
+ * find unused device
*/
- type = usb_endpoint_type(desc);
- min_usr = ~0;
- best_pipe = NULL;
- usbhs_for_each_pipe(pipe, priv, i) {
- if (!usbhs_pipe_type_is(pipe, type))
+ usbhsh_for_each_udev(pos, hpriv, i) {
+ if (usbhsh_udev_is_used(pos))
continue;
+ udev = pos;
+ break;
+ }
- dir_in = !!usbhs_pipe_is_dir_in(pipe);
- if (0 != (dir_in - dir_in_req))
- continue;
+ if (udev) {
+ /*
+ * usbhsh_usbv_to_udev()
+ * usbhsh_udev_to_usbv()
+ * will be enable
+ */
+ dev_set_drvdata(&usbv->dev, udev);
+ udev->usbv = usbv;
+ }
- info = usbhsh_pipe_info(pipe);
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ******************/
- if (min_usr > info->usr_cnt) {
- min_usr = info->usr_cnt;
- best_pipe = pipe;
- }
+ if (!udev) {
+ dev_err(dev, "no free usbhsh_device\n");
+ return NULL;
}
- if (unlikely(!best_pipe)) {
- dev_err(dev, "couldn't find best pipe\n");
- kfree(uep);
- return NULL;
+ if (usbhsh_device_has_endpoint(udev)) {
+ dev_warn(dev, "udev have old endpoint\n");
+ usbhsh_endpoint_detach_all(hpriv, udev);
+ }
+
+ if (usbhsh_device_has_endpoint(udev0)) {
+ dev_warn(dev, "udev0 have old endpoint\n");
+ usbhsh_endpoint_detach_all(hpriv, udev0);
}
-usbhsh_endpoint_alloc_find_pipe:
+
+ /* uep will be attached */
+ INIT_LIST_HEAD(&udev0->ep_list_head);
+ INIT_LIST_HEAD(&udev->ep_list_head);
+
/*
- * init uep
+ * set device0 config
*/
- uep->pipe = best_pipe;
- uep->maxp = usb_endpoint_maxp(desc);
- usbhsh_uep_to_udev(uep) = udev;
- usbhsh_ep_to_uep(ep) = uep;
+ usbhs_set_device_config(priv,
+ 0, 0, 0, usbv->speed);
/*
- * update pipe user count
+ * set new device config
*/
- info = usbhsh_pipe_info(best_pipe);
- info->usr_cnt++;
+ upphub = 0;
+ hubport = 0;
+ if (!usbhsh_connected_to_rhdev(hcd, udev)) {
+ /* if udev is not connected to rhdev, it means parent is Hub */
+ struct usbhsh_device *parent = usbhsh_device_parent(udev);
- /* init this endpoint, and attach it to udev */
- INIT_LIST_HEAD(&uep->ep_list);
- list_add_tail(&uep->ep_list, &udev->ep_list_head);
+ upphub = usbhsh_device_number(hpriv, parent);
+ hubport = usbhsh_device_hubport(udev);
- /*
- * usbhs_pipe_config_update() should be called after
- * usbhs_device_config()
- * see
- * DCPMAXP/PIPEMAXP
- */
- usbhs_pipe_sequence_data0(uep->pipe);
- usbhs_pipe_config_update(uep->pipe,
- usbhsh_device_number(hpriv, udev),
- usb_endpoint_num(desc),
- uep->maxp);
+ dev_dbg(dev, "%s connecte to Hub [%d:%d](%p)\n", __func__,
+ upphub, hubport, parent);
+ }
- dev_dbg(dev, "%s [%d-%s](%p)\n", __func__,
- usbhsh_device_number(hpriv, udev),
- usbhs_pipe_name(uep->pipe), uep);
+ usbhs_set_device_config(priv,
+ usbhsh_device_number(hpriv, udev),
+ upphub, hubport, usbv->speed);
- return uep;
+ dev_dbg(dev, "%s [%d](%p)\n", __func__,
+ usbhsh_device_number(hpriv, udev), udev);
+
+ return udev;
}
-void usbhsh_endpoint_free(struct usbhsh_hpriv *hpriv,
- struct usb_host_endpoint *ep)
+static void usbhsh_device_detach(struct usbhsh_hpriv *hpriv,
+ struct usbhsh_device *udev)
{
+ struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
- struct device *dev = usbhs_priv_to_dev(priv);
- struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep);
- struct usbhsh_pipe_info *info;
+ struct device *dev = usbhsh_hcd_to_dev(hcd);
+ struct usb_device *usbv = usbhsh_udev_to_usbv(udev);
+ unsigned long flags;
- if (!uep)
- return;
+ dev_dbg(dev, "%s [%d](%p)\n", __func__,
+ usbhsh_device_number(hpriv, udev), udev);
- dev_dbg(dev, "%s [%d-%s](%p)\n", __func__,
- usbhsh_device_number(hpriv, usbhsh_uep_to_udev(uep)),
- usbhs_pipe_name(uep->pipe), uep);
+ if (usbhsh_device_has_endpoint(udev)) {
+ dev_warn(dev, "udev still have endpoint\n");
+ usbhsh_endpoint_detach_all(hpriv, udev);
+ }
- info = usbhsh_pipe_info(uep->pipe);
- info->usr_cnt--;
+ /*
+ * There is nothing to do if it is device0.
+ * see
+ * usbhsh_device_attach()
+ * usbhsh_device_get()
+ */
+ if (0 == usbhsh_device_number(hpriv, udev))
+ return;
- /* remove this endpoint from udev */
- list_del_init(&uep->ep_list);
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
- usbhsh_uep_to_udev(uep) = NULL;
- usbhsh_ep_to_uep(ep) = NULL;
+ /*
+ * usbhsh_usbv_to_udev()
+ * usbhsh_udev_to_usbv()
+ * will be disable
+ */
+ dev_set_drvdata(&usbv->dev, NULL);
+ udev->usbv = NULL;
- kfree(uep);
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ******************/
}
/*
*/
static void usbhsh_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
{
- struct usbhsh_request *ureq = usbhsh_pkt_to_req(pkt);
+ struct usbhsh_request *ureq = usbhsh_pkt_to_ureq(pkt);
struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
struct urb *urb = ureq->urb;
struct device *dev = usbhs_priv_to_dev(priv);
+ int status = 0;
dev_dbg(dev, "%s\n", __func__);
return;
}
+ if (!usbhsh_is_running(hpriv))
+ status = -ESHUTDOWN;
+
urb->actual_length = pkt->actual;
- usbhsh_req_free(hpriv, ureq);
- usbhsh_urb_to_ureq(urb) = NULL;
+ usbhsh_ureq_free(hpriv, ureq);
+
+ usbhsh_endpoint_sequence_save(hpriv, urb, pkt);
+ usbhsh_pipe_detach(hpriv, usbhsh_ep_to_uep(urb->ep));
usb_hcd_unlink_urb_from_ep(hcd, urb);
- usb_hcd_giveback_urb(hcd, urb, 0);
+ usb_hcd_giveback_urb(hcd, urb, status);
}
static int usbhsh_queue_push(struct usb_hcd *hcd,
- struct usbhs_pipe *pipe,
- struct urb *urb)
+ struct urb *urb,
+ gfp_t mem_flags)
{
- struct usbhsh_request *ureq = usbhsh_urb_to_ureq(urb);
- struct usbhs_pkt *pkt = &ureq->pkt;
+ struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
+ struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep);
+ struct usbhs_pipe *pipe = usbhsh_uep_to_pipe(uep);
struct device *dev = usbhsh_hcd_to_dev(hcd);
+ struct usbhsh_request *ureq;
void *buf;
- int len;
+ int len, sequence;
if (usb_pipeisoc(urb->pipe)) {
dev_err(dev, "pipe iso is not supported now\n");
return -EIO;
}
+ /* this ureq will be freed on usbhsh_queue_done() */
+ ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags);
+ if (unlikely(!ureq)) {
+ dev_err(dev, "ureq alloc fail\n");
+ return -ENOMEM;
+ }
+
if (usb_pipein(urb->pipe))
pipe->handler = &usbhs_fifo_pio_pop_handler;
else
buf = (void *)(urb->transfer_buffer + urb->actual_length);
len = urb->transfer_buffer_length - urb->actual_length;
+ sequence = usb_gettoggle(urb->dev,
+ usb_pipeendpoint(urb->pipe),
+ usb_pipeout(urb->pipe));
+
dev_dbg(dev, "%s\n", __func__);
- usbhs_pkt_push(pipe, pkt, usbhsh_queue_done,
- buf, len, (urb->transfer_flags & URB_ZERO_PACKET));
+ usbhs_pkt_push(pipe, &ureq->pkt, usbhsh_queue_done,
+ buf, len, (urb->transfer_flags & URB_ZERO_PACKET),
+ sequence);
+
usbhs_pkt_start(pipe);
return 0;
}
+static void usbhsh_queue_force_pop(struct usbhs_priv *priv,
+ struct usbhs_pipe *pipe)
+{
+ struct usbhs_pkt *pkt;
+
+ while (1) {
+ pkt = usbhs_pkt_pop(pipe, NULL);
+ if (!pkt)
+ break;
+
+ /*
+ * if all packet are gone, usbhsh_endpoint_disable()
+ * will be called.
+ * then, attached device/endpoint/pipe will be detached
+ */
+ usbhsh_queue_done(priv, pkt);
+ }
+}
+
+static void usbhsh_queue_force_pop_all(struct usbhs_priv *priv)
+{
+ struct usbhs_pipe *pos;
+ int i;
+
+ usbhs_for_each_pipe_with_dcp(pos, priv, i)
+ usbhsh_queue_force_pop(priv, pos);
+}
+
/*
* DCP setup stage
*/
static int usbhsh_is_request_address(struct urb *urb)
{
- struct usb_ctrlrequest *cmd;
+ struct usb_ctrlrequest *req;
- cmd = (struct usb_ctrlrequest *)urb->setup_packet;
+ req = (struct usb_ctrlrequest *)urb->setup_packet;
- if ((DeviceOutRequest == cmd->bRequestType << 8) &&
- (USB_REQ_SET_ADDRESS == cmd->bRequest))
+ if ((DeviceOutRequest == req->bRequestType << 8) &&
+ (USB_REQ_SET_ADDRESS == req->bRequest))
return 1;
else
return 0;
/*
* renesas_usbhs can not use original usb address.
* see HARDWARE LIMITATION.
- * modify usb address here.
+ * modify usb address here to use attached device.
+ * see usbhsh_device_attach()
*/
if (usbhsh_is_request_address(urb)) {
- /* FIXME */
- req.wValue = 1;
+ struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
+ struct usbhsh_device *udev = usbhsh_usbv_to_udev(usbv);
+
+ /* udev is a attached device */
+ req.wValue = usbhsh_device_number(hpriv, udev);
dev_dbg(dev, "create new address - %d\n", req.wValue);
}
static void usbhsh_data_stage_packet_done(struct usbhs_priv *priv,
struct usbhs_pkt *pkt)
{
- struct usbhsh_request *ureq = usbhsh_pkt_to_req(pkt);
+ struct usbhsh_request *ureq = usbhsh_pkt_to_ureq(pkt);
struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
- struct urb *urb = ureq->urb;
/* this ureq was connected to urb when usbhsh_urb_enqueue() */
- usbhsh_req_free(hpriv, ureq);
- usbhsh_urb_to_ureq(urb) = NULL;
+ usbhsh_ureq_free(hpriv, ureq);
}
-static void usbhsh_data_stage_packet_push(struct usbhsh_hpriv *hpriv,
- struct urb *urb,
- struct usbhs_pipe *pipe)
+static int usbhsh_data_stage_packet_push(struct usbhsh_hpriv *hpriv,
+ struct urb *urb,
+ struct usbhs_pipe *pipe,
+ gfp_t mem_flags)
+
{
struct usbhsh_request *ureq;
- struct usbhs_pkt *pkt;
- /*
- * FIXME
- *
- * data stage uses ureq which is connected to urb
- * see usbhsh_urb_enqueue() :: alloc new request.
- * it will be freed in usbhsh_data_stage_packet_done()
- */
- ureq = usbhsh_urb_to_ureq(urb);
- pkt = &ureq->pkt;
+ /* this ureq will be freed on usbhsh_data_stage_packet_done() */
+ ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags);
+ if (unlikely(!ureq))
+ return -ENOMEM;
if (usb_pipein(urb->pipe))
pipe->handler = &usbhs_dcp_data_stage_in_handler;
else
pipe->handler = &usbhs_dcp_data_stage_out_handler;
- usbhs_pkt_push(pipe, pkt,
+ usbhs_pkt_push(pipe, &ureq->pkt,
usbhsh_data_stage_packet_done,
urb->transfer_buffer,
urb->transfer_buffer_length,
- (urb->transfer_flags & URB_ZERO_PACKET));
+ (urb->transfer_flags & URB_ZERO_PACKET),
+ -1);
+
+ return 0;
}
/*
* DCP status stage
*/
-static void usbhsh_status_stage_packet_push(struct usbhsh_hpriv *hpriv,
+static int usbhsh_status_stage_packet_push(struct usbhsh_hpriv *hpriv,
struct urb *urb,
- struct usbhs_pipe *pipe)
+ struct usbhs_pipe *pipe,
+ gfp_t mem_flags)
{
struct usbhsh_request *ureq;
- struct usbhs_pkt *pkt;
- /*
- * FIXME
- *
- * status stage uses allocated ureq.
- * it will be freed on usbhsh_queue_done()
- */
- ureq = usbhsh_req_alloc(hpriv, urb, GFP_KERNEL);
- pkt = &ureq->pkt;
+ /* This ureq will be freed on usbhsh_queue_done() */
+ ureq = usbhsh_ureq_alloc(hpriv, urb, mem_flags);
+ if (unlikely(!ureq))
+ return -ENOMEM;
if (usb_pipein(urb->pipe))
pipe->handler = &usbhs_dcp_status_stage_in_handler;
else
pipe->handler = &usbhs_dcp_status_stage_out_handler;
- usbhs_pkt_push(pipe, pkt,
+ usbhs_pkt_push(pipe, &ureq->pkt,
usbhsh_queue_done,
NULL,
urb->transfer_buffer_length,
- 0);
+ 0, -1);
+
+ return 0;
}
static int usbhsh_dcp_queue_push(struct usb_hcd *hcd,
- struct usbhsh_hpriv *hpriv,
- struct usbhs_pipe *pipe,
- struct urb *urb)
+ struct urb *urb,
+ gfp_t mflags)
{
+ struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
+ struct usbhsh_ep *uep = usbhsh_ep_to_uep(urb->ep);
+ struct usbhs_pipe *pipe = usbhsh_uep_to_pipe(uep);
struct device *dev = usbhsh_hcd_to_dev(hcd);
+ int ret;
dev_dbg(dev, "%s\n", __func__);
*
* It is pushed only when urb has buffer.
*/
- if (urb->transfer_buffer_length)
- usbhsh_data_stage_packet_push(hpriv, urb, pipe);
+ if (urb->transfer_buffer_length) {
+ ret = usbhsh_data_stage_packet_push(hpriv, urb, pipe, mflags);
+ if (ret < 0) {
+ dev_err(dev, "data stage failed\n");
+ return ret;
+ }
+ }
/*
* status stage
*/
- usbhsh_status_stage_packet_push(hpriv, urb, pipe);
+ ret = usbhsh_status_stage_packet_push(hpriv, urb, pipe, mflags);
+ if (ret < 0) {
+ dev_err(dev, "status stage failed\n");
+ return ret;
+ }
/*
* start pushed packets
struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
struct device *dev = usbhs_priv_to_dev(priv);
- struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
struct usb_host_endpoint *ep = urb->ep;
- struct usbhsh_request *ureq;
- struct usbhsh_device *udev, *new_udev = NULL;
- struct usbhs_pipe *pipe;
- struct usbhsh_ep *uep;
+ struct usbhsh_device *new_udev = NULL;
int is_dir_in = usb_pipein(urb->pipe);
-
+ int i;
int ret;
dev_dbg(dev, "%s (%s)\n", __func__, is_dir_in ? "in" : "out");
+ if (!usbhsh_is_running(hpriv)) {
+ ret = -EIO;
+ dev_err(dev, "host is not running\n");
+ goto usbhsh_urb_enqueue_error_not_linked;
+ }
+
ret = usb_hcd_link_urb_to_ep(hcd, urb);
- if (ret)
+ if (ret) {
+ dev_err(dev, "urb link failed\n");
goto usbhsh_urb_enqueue_error_not_linked;
+ }
/*
- * get udev
+ * attach udev if needed
+ * see [image of mod_host]
*/
- udev = usbhsh_usbv_to_udev(usbv);
- if (!udev) {
- new_udev = usbhsh_device_alloc(hpriv, urb);
- if (!new_udev)
+ if (!usbhsh_device_get(hpriv, urb)) {
+ new_udev = usbhsh_device_attach(hpriv, urb);
+ if (!new_udev) {
+ ret = -EIO;
+ dev_err(dev, "device attach failed\n");
goto usbhsh_urb_enqueue_error_not_linked;
-
- udev = new_udev;
+ }
}
/*
- * get uep
+ * attach endpoint if needed
+ * see [image of mod_host]
*/
- uep = usbhsh_ep_to_uep(ep);
- if (!uep) {
- uep = usbhsh_endpoint_alloc(hpriv, udev, ep,
- is_dir_in, mem_flags);
- if (!uep)
+ if (!usbhsh_ep_to_uep(ep)) {
+ ret = usbhsh_endpoint_attach(hpriv, urb, mem_flags);
+ if (ret < 0) {
+ dev_err(dev, "endpoint attach failed\n");
goto usbhsh_urb_enqueue_error_free_device;
+ }
}
- pipe = usbhsh_uep_to_pipe(uep);
/*
- * alloc new request
+ * attach pipe to endpoint
+ * see [image of mod_host]
*/
- ureq = usbhsh_req_alloc(hpriv, urb, mem_flags);
- if (unlikely(!ureq)) {
- ret = -ENOMEM;
+ for (i = 0; i < 1024; i++) {
+ ret = usbhsh_pipe_attach(hpriv, urb);
+ if (ret < 0)
+ msleep(100);
+ else
+ break;
+ }
+ if (ret < 0) {
+ dev_err(dev, "pipe attach failed\n");
goto usbhsh_urb_enqueue_error_free_endpoint;
}
- usbhsh_urb_to_ureq(urb) = ureq;
/*
* push packet
*/
if (usb_pipecontrol(urb->pipe))
- usbhsh_dcp_queue_push(hcd, hpriv, pipe, urb);
+ ret = usbhsh_dcp_queue_push(hcd, urb, mem_flags);
else
- usbhsh_queue_push(hcd, pipe, urb);
+ ret = usbhsh_queue_push(hcd, urb, mem_flags);
- return 0;
+ return ret;
usbhsh_urb_enqueue_error_free_endpoint:
- usbhsh_endpoint_free(hpriv, ep);
+ usbhsh_endpoint_detach(hpriv, ep);
usbhsh_urb_enqueue_error_free_device:
if (new_udev)
- usbhsh_device_free(hpriv, new_udev);
+ usbhsh_device_detach(hpriv, new_udev);
usbhsh_urb_enqueue_error_not_linked:
dev_dbg(dev, "%s error\n", __func__);
struct usbhsh_request *ureq = usbhsh_urb_to_ureq(urb);
if (ureq) {
- usbhsh_req_free(hpriv, ureq);
- usbhsh_urb_to_ureq(urb) = NULL;
+ struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+ struct usbhs_pkt *pkt = &ureq->pkt;
+
+ usbhs_pkt_pop(pkt->pipe, pkt);
+ usbhsh_queue_done(priv, pkt);
}
return 0;
/*
* this function might be called manytimes by same hcd/ep
- * in-endpoitn == out-endpoint if ep == dcp.
+ * in-endpoint == out-endpoint if ep == dcp.
*/
if (!uep)
return;
udev = usbhsh_uep_to_udev(uep);
hpriv = usbhsh_hcd_to_hpriv(hcd);
- usbhsh_endpoint_free(hpriv, ep);
- ep->hcpriv = NULL;
+ usbhsh_endpoint_detach(hpriv, ep);
/*
* if there is no endpoint,
* free device
*/
if (!usbhsh_device_has_endpoint(udev))
- usbhsh_device_free(hpriv, udev);
+ usbhsh_device_detach(hpriv, udev);
}
static int usbhsh_hub_status_data(struct usb_hcd *hcd, char *buf)
USB_PORT_STAT_HIGH_SPEED |
USB_PORT_STAT_LOW_SPEED);
+ usbhsh_queue_force_pop_all(priv);
+
usbhs_bus_send_reset(priv);
msleep(20);
usbhs_bus_send_sof_enable(priv);
usbhsh_port_stat_set(hpriv, USB_PORT_STAT_CONNECTION);
usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16);
+ /*
+ * attch interrupt might happen infinitely on some device
+ * (on self power USB hub ?)
+ * disable it here.
+ *
+ * usbhsh_is_running() becomes effective
+ * according to this process.
+ * see
+ * usbhsh_is_running()
+ * usbhsh_urb_enqueue()
+ */
+ hpriv->mod.irq_attch = NULL;
+ usbhs_irq_callback_update(priv, &hpriv->mod);
+
return 0;
}
usbhsh_port_stat_clear(hpriv, USB_PORT_STAT_CONNECTION);
usbhsh_port_stat_set(hpriv, USB_PORT_STAT_C_CONNECTION << 16);
+ /*
+ * enable attch interrupt again
+ *
+ * usbhsh_is_running() becomes invalid
+ * according to this process.
+ * see
+ * usbhsh_is_running()
+ * usbhsh_urb_enqueue()
+ */
+ hpriv->mod.irq_attch = usbhsh_irq_attch;
+ usbhs_irq_callback_update(priv, &hpriv->mod);
+
+ /*
+ * usbhsh_queue_force_pop_all() should be called
+ * after usbhsh_is_running() becomes invalid.
+ */
+ usbhsh_queue_force_pop_all(priv);
+
return 0;
}
static void usbhsh_pipe_init_for_host(struct usbhs_priv *priv)
{
struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
- struct usbhsh_pipe_info *pipe_info = hpriv->pipe_info;
struct usbhs_pipe *pipe;
u32 *pipe_type = usbhs_get_dparam(priv, pipe_type);
int pipe_size = usbhs_get_dparam(priv, pipe_size);
/* init all pipe */
old_type = USB_ENDPOINT_XFER_CONTROL;
for (i = 0; i < pipe_size; i++) {
- pipe_info[i].usr_cnt = 0;
/*
* data "output" will be finished as soon as possible,
dir_in);
}
- pipe->mod_private = pipe_info + i;
+ pipe->mod_private = NULL;
}
}
* - host
* - usb module
*/
- usbhs_sys_hispeed_ctrl(priv, 1);
usbhs_sys_host_ctrl(priv, 1);
- usbhs_sys_usb_ctrl(priv, 1);
/*
* enable irq callback
usb_remove_hcd(hcd);
/* disable sys */
- usbhs_sys_hispeed_ctrl(priv, 0);
usbhs_sys_host_ctrl(priv, 0);
- usbhs_sys_usb_ctrl(priv, 0);
dev_dbg(dev, "quit host\n");
{
struct usbhsh_hpriv *hpriv;
struct usb_hcd *hcd;
- struct usbhsh_pipe_info *pipe_info;
struct usbhsh_device *udev;
struct device *dev = usbhs_priv_to_dev(priv);
- int pipe_size = usbhs_get_dparam(priv, pipe_size);
int i;
/* initialize hcd */
}
hcd->has_tt = 1; /* for low/full speed */
- pipe_info = kzalloc(sizeof(*pipe_info) * pipe_size, GFP_KERNEL);
- if (!pipe_info) {
- dev_err(dev, "Could not allocate pipe_info\n");
- goto usbhs_mod_host_probe_err;
- }
-
/*
* CAUTION
*
hpriv->mod.name = "host";
hpriv->mod.start = usbhsh_start;
hpriv->mod.stop = usbhsh_stop;
- hpriv->pipe_info = pipe_info;
- hpriv->pipe_size = pipe_size;
- usbhsh_req_list_init(hpriv);
usbhsh_port_stat_init(hpriv);
/* init all device */
dev_info(dev, "host probed\n");
return 0;
-
-usbhs_mod_host_probe_err:
- usb_put_hcd(hcd);
-
- return -ENOMEM;
}
int usbhs_mod_host_remove(struct usbhs_priv *priv)
struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
- usbhsh_req_list_quit(hpriv);
-
usb_put_hcd(hcd);
return 0;
git.openpandora.org / pandora-kernel.git / blobdiff