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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/usb/renesas_usbhs/mod_host.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/usb/renesas_usbhs/mod_host.c')
-rw-r--r--kernel/drivers/usb/renesas_usbhs/mod_host.c1587
1 files changed, 1587 insertions, 0 deletions
diff --git a/kernel/drivers/usb/renesas_usbhs/mod_host.c b/kernel/drivers/usb/renesas_usbhs/mod_host.c
new file mode 100644
index 000000000..bd0503599
--- /dev/null
+++ b/kernel/drivers/usb/renesas_usbhs/mod_host.c
@@ -0,0 +1,1587 @@
+/*
+ * Renesas USB driver
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include "common.h"
+
+/*
+ *** HARDWARE LIMITATION ***
+ *
+ * 1) renesas_usbhs has a limited number of controllable devices.
+ * it can control only 9 devices in generally.
+ * see DEVADDn / DCPMAXP / PIPEMAXP.
+ *
+ * 2) renesas_usbhs pipe number is limited.
+ * the pipe will be re-used for each devices.
+ * so, software should control DATA0/1 sequence of each devices.
+ */
+
+
+/*
+ * image of mod_host
+ *
+ * +--------+
+ * | udev 0 | --> it is used when set address
+ * +--------+
+ *
+ * +--------+ pipes are reused for each uep.
+ * | udev 1 |-+- [uep 0 (dcp) ] --+ pipe will be switched when
+ * +--------+ | | 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)]-----------+
+ *
+ * @ : uep requested free pipe, but all have been used.
+ * now it is waiting for free pipe
+ */
+
+
+/*
+ * struct
+ */
+struct usbhsh_request {
+ struct urb *urb;
+ struct usbhs_pkt pkt;
+};
+
+struct usbhsh_device {
+ struct usb_device *usbv;
+ struct list_head ep_list_head; /* list of usbhsh_ep */
+};
+
+struct usbhsh_ep {
+ 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 */
+ unsigned int counter; /* pipe attach counter */
+};
+
+#define USBHSH_DEVICE_MAX 10 /* see DEVADDn / DCPMAXP / PIPEMAXP */
+#define USBHSH_PORT_MAX 7 /* see DEVADDn :: HUBPORT */
+struct usbhsh_hpriv {
+ struct usbhs_mod mod;
+ struct usbhs_pipe *dcp;
+
+ struct usbhsh_device udev[USBHSH_DEVICE_MAX];
+
+ u32 port_stat; /* USB_PORT_STAT_xxx */
+
+ struct completion setup_ack_done;
+};
+
+
+static const char usbhsh_hcd_name[] = "renesas_usbhs host";
+
+/*
+ * macro
+ */
+#define usbhsh_priv_to_hpriv(priv) \
+ container_of(usbhs_mod_get(priv, USBHS_HOST), struct usbhsh_hpriv, mod)
+
+#define __usbhsh_for_each_udev(start, pos, h, i) \
+ for ((i) = start; \
+ ((i) < USBHSH_DEVICE_MAX) && ((pos) = (h)->udev + (i)); \
+ (i)++)
+
+#define usbhsh_for_each_udev(pos, hpriv, i) \
+ __usbhsh_for_each_udev(1, pos, hpriv, i)
+
+#define usbhsh_for_each_udev_with_dev0(pos, hpriv, i) \
+ __usbhsh_for_each_udev(0, pos, hpriv, i)
+
+#define usbhsh_hcd_to_hpriv(h) (struct usbhsh_hpriv *)((h)->hcd_priv)
+#define usbhsh_hcd_to_dev(h) ((h)->self.controller)
+
+#define usbhsh_hpriv_to_priv(h) ((h)->mod.priv)
+#define usbhsh_hpriv_to_dcp(h) ((h)->dcp)
+#define usbhsh_hpriv_to_hcd(h) \
+ container_of((void *)h, struct usb_hcd, hcd_priv)
+
+#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_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_init(h) ((h)->port_stat = 0)
+#define usbhsh_port_stat_set(h, s) ((h)->port_stat |= (s))
+#define usbhsh_port_stat_clear(h, s) ((h)->port_stat &= ~(s))
+#define usbhsh_port_stat_get(h) ((h)->port_stat)
+
+#define usbhsh_pkt_to_ureq(p) \
+ container_of((void *)p, struct usbhsh_request, pkt)
+
+/*
+ * req alloc/free
+ */
+static struct usbhsh_request *usbhsh_ureq_alloc(struct usbhsh_hpriv *hpriv,
+ struct urb *urb,
+ gfp_t mem_flags)
+{
+ struct usbhsh_request *ureq;
+ struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ ureq = kzalloc(sizeof(struct usbhsh_request), mem_flags);
+ if (!ureq) {
+ dev_err(dev, "ureq alloc fail\n");
+ return NULL;
+ }
+
+ usbhs_pkt_init(&ureq->pkt);
+ ureq->urb = urb;
+ usbhsh_urb_to_ureq(urb) = ureq;
+
+ return ureq;
+}
+
+static void usbhsh_ureq_free(struct usbhsh_hpriv *hpriv,
+ struct usbhsh_request *ureq)
+{
+ usbhsh_urb_to_ureq(ureq->urb) = NULL;
+ ureq->urb = NULL;
+
+ kfree(ureq);
+}
+
+/*
+ * status
+ */
+static int usbhsh_is_running(struct usbhsh_hpriv *hpriv)
+{
+ /*
+ * we can decide some device is attached or not
+ * by checking mod.irq_attch
+ * see
+ * usbhsh_irq_attch()
+ * usbhsh_irq_dtch()
+ */
+ return (hpriv->mod.irq_attch == NULL);
+}
+
+/*
+ * pipe control
+ */
+static void usbhsh_endpoint_sequence_save(struct usbhsh_hpriv *hpriv,
+ struct urb *urb,
+ struct usbhs_pkt *pkt)
+{
+ int len = urb->actual_length;
+ int maxp = usb_endpoint_maxp(&urb->ep->desc);
+ int t = 0;
+
+ /* DCP is out of sequence control */
+ if (usb_pipecontrol(urb->pipe))
+ return;
+
+ /*
+ * 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]
+ */
+
+ /*
+ * next sequence depends on actual_length
+ *
+ * ex) actual_length = 1147, maxp = 512
+ * data0 : 512
+ * data1 : 512
+ * data0 : 123
+ * data1 is the next sequence
+ */
+ 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 uep has been attached to pipe,
+ * reuse it
+ */
+ if (usbhsh_uep_to_pipe(uep)) {
+ ret = 0;
+ goto usbhsh_pipe_attach_done;
+ }
+
+ usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
+
+ /* check pipe type */
+ if (!usbhs_pipe_type_is(pipe, usb_endpoint_type(desc)))
+ continue;
+
+ /* 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;
+ }
+
+ /* check pipe is free */
+ if (usbhsh_pipe_to_uep(pipe))
+ continue;
+
+ /*
+ * 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;
+
+ usbhs_pipe_config_update(pipe,
+ usbhsh_device_number(hpriv, udev),
+ usb_endpoint_num(desc),
+ usb_endpoint_maxp(desc));
+
+ 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");
+
+ ret = 0;
+ break;
+ }
+
+usbhsh_pipe_attach_done:
+ if (0 == ret)
+ uep->counter++;
+
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ******************/
+
+ return ret;
+}
+
+static void usbhsh_pipe_detach(struct usbhsh_hpriv *hpriv,
+ struct usbhsh_ep *uep)
+{
+ struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+ struct usbhs_pipe *pipe;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ unsigned long flags;
+
+ if (unlikely(!uep)) {
+ dev_err(dev, "no uep\n");
+ return;
+ }
+
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
+
+ pipe = usbhsh_uep_to_pipe(uep);
+
+ if (unlikely(!pipe)) {
+ dev_err(dev, "uep doens't have pipe\n");
+ } else if (1 == uep->counter--) { /* last user */
+ 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 ******************/
+}
+
+/*
+ * endpoint control
+ */
+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 usbhsh_device *udev = usbhsh_device_get(hpriv, urb);
+ struct usb_host_endpoint *ep = urb->ep;
+ struct usbhsh_ep *uep;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ struct usb_endpoint_descriptor *desc = &ep->desc;
+ unsigned long flags;
+
+ uep = kzalloc(sizeof(struct usbhsh_ep), mem_flags);
+ if (!uep) {
+ dev_err(dev, "usbhsh_ep alloc fail\n");
+ return -ENOMEM;
+ }
+
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
+
+ /*
+ * init endpoint
+ */
+ uep->counter = 0;
+ 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 unused device
+ */
+ usbhsh_for_each_udev(pos, hpriv, i) {
+ if (usbhsh_udev_is_used(pos))
+ continue;
+ udev = pos;
+ break;
+ }
+
+ if (udev) {
+ /*
+ * usbhsh_usbv_to_udev()
+ * usbhsh_udev_to_usbv()
+ * will be enable
+ */
+ dev_set_drvdata(&usbv->dev, udev);
+ udev->usbv = usbv;
+ }
+
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ******************/
+
+ if (!udev) {
+ dev_err(dev, "no free usbhsh_device\n");
+ 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);
+ }
+
+ /* uep will be attached */
+ INIT_LIST_HEAD(&udev0->ep_list_head);
+ INIT_LIST_HEAD(&udev->ep_list_head);
+
+ /*
+ * set device0 config
+ */
+ usbhs_set_device_config(priv,
+ 0, 0, 0, usbv->speed);
+
+ /*
+ * set new device config
+ */
+ 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);
+
+ upphub = usbhsh_device_number(hpriv, parent);
+ hubport = usbhsh_device_hubport(udev);
+
+ dev_dbg(dev, "%s connecte to Hub [%d:%d](%p)\n", __func__,
+ upphub, hubport, parent);
+ }
+
+ usbhs_set_device_config(priv,
+ usbhsh_device_number(hpriv, udev),
+ upphub, hubport, usbv->speed);
+
+ dev_dbg(dev, "%s [%d](%p)\n", __func__,
+ usbhsh_device_number(hpriv, udev), udev);
+
+ return udev;
+}
+
+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 = usbhsh_hcd_to_dev(hcd);
+ struct usb_device *usbv = usbhsh_udev_to_usbv(udev);
+ unsigned long flags;
+
+ dev_dbg(dev, "%s [%d](%p)\n", __func__,
+ usbhsh_device_number(hpriv, udev), udev);
+
+ if (usbhsh_device_has_endpoint(udev)) {
+ dev_warn(dev, "udev still have endpoint\n");
+ usbhsh_endpoint_detach_all(hpriv, udev);
+ }
+
+ /*
+ * There is nothing to do if it is device0.
+ * see
+ * usbhsh_device_attach()
+ * usbhsh_device_get()
+ */
+ if (0 == usbhsh_device_number(hpriv, udev))
+ return;
+
+ /******************** spin lock ********************/
+ usbhs_lock(priv, flags);
+
+ /*
+ * usbhsh_usbv_to_udev()
+ * usbhsh_udev_to_usbv()
+ * will be disable
+ */
+ dev_set_drvdata(&usbv->dev, NULL);
+ udev->usbv = NULL;
+
+ usbhs_unlock(priv, flags);
+ /******************** spin unlock ******************/
+}
+
+/*
+ * queue push/pop
+ */
+static void usbhsh_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *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__);
+
+ if (!urb) {
+ dev_warn(dev, "pkt doesn't have urb\n");
+ return;
+ }
+
+ if (!usbhsh_is_running(hpriv))
+ status = -ESHUTDOWN;
+
+ urb->actual_length = pkt->actual;
+
+ usbhsh_endpoint_sequence_save(hpriv, urb, pkt);
+ usbhsh_ureq_free(hpriv, ureq);
+
+ usbhsh_pipe_detach(hpriv, usbhsh_ep_to_uep(urb->ep));
+
+ usb_hcd_unlink_urb_from_ep(hcd, urb);
+ usb_hcd_giveback_urb(hcd, urb, status);
+}
+
+static int usbhsh_queue_push(struct usb_hcd *hcd,
+ struct urb *urb,
+ gfp_t mem_flags)
+{
+ 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, 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_dma_pop_handler;
+ else
+ pipe->handler = &usbhs_fifo_dma_push_handler;
+
+ 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, &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 *req;
+
+ req = (struct usb_ctrlrequest *)urb->setup_packet;
+
+ if ((DeviceOutRequest == req->bRequestType << 8) &&
+ (USB_REQ_SET_ADDRESS == req->bRequest))
+ return 1;
+ else
+ return 0;
+}
+
+static void usbhsh_setup_stage_packet_push(struct usbhsh_hpriv *hpriv,
+ struct urb *urb,
+ struct usbhs_pipe *pipe)
+{
+ struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+ struct usb_ctrlrequest req;
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ /*
+ * wait setup packet ACK
+ * see
+ * usbhsh_irq_setup_ack()
+ * usbhsh_irq_setup_err()
+ */
+ init_completion(&hpriv->setup_ack_done);
+
+ /* copy original request */
+ memcpy(&req, urb->setup_packet, sizeof(struct usb_ctrlrequest));
+
+ /*
+ * renesas_usbhs can not use original usb address.
+ * see HARDWARE LIMITATION.
+ * modify usb address here to use attached device.
+ * see usbhsh_device_attach()
+ */
+ if (usbhsh_is_request_address(urb)) {
+ 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);
+ }
+
+ /* set request */
+ usbhs_usbreq_set_val(priv, &req);
+
+ /*
+ * wait setup packet ACK
+ */
+ wait_for_completion(&hpriv->setup_ack_done);
+
+ dev_dbg(dev, "%s done\n", __func__);
+}
+
+/*
+ * DCP data stage
+ */
+static void usbhsh_data_stage_packet_done(struct usbhs_priv *priv,
+ struct usbhs_pkt *pkt)
+{
+ struct usbhsh_request *ureq = usbhsh_pkt_to_ureq(pkt);
+ struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+
+ /* this ureq was connected to urb when usbhsh_urb_enqueue() */
+
+ usbhsh_ureq_free(hpriv, ureq);
+}
+
+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;
+
+ /* 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, &ureq->pkt,
+ usbhsh_data_stage_packet_done,
+ urb->transfer_buffer,
+ urb->transfer_buffer_length,
+ (urb->transfer_flags & URB_ZERO_PACKET),
+ -1);
+
+ return 0;
+}
+
+/*
+ * DCP status stage
+ */
+static int usbhsh_status_stage_packet_push(struct usbhsh_hpriv *hpriv,
+ struct urb *urb,
+ struct usbhs_pipe *pipe,
+ gfp_t mem_flags)
+{
+ struct usbhsh_request *ureq;
+
+ /* 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, &ureq->pkt,
+ usbhsh_queue_done,
+ NULL,
+ urb->transfer_buffer_length,
+ 0, -1);
+
+ return 0;
+}
+
+static int usbhsh_dcp_queue_push(struct usb_hcd *hcd,
+ 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__);
+
+ /*
+ * setup stage
+ *
+ * usbhsh_send_setup_stage_packet() wait SACK/SIGN
+ */
+ usbhsh_setup_stage_packet_push(hpriv, urb, pipe);
+
+ /*
+ * data stage
+ *
+ * It is pushed only when urb has buffer.
+ */
+ 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
+ */
+ 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
+ */
+ usbhs_pkt_start(pipe);
+
+ return 0;
+}
+
+/*
+ * dma map functions
+ */
+static int usbhsh_dma_map_ctrl(struct usbhs_pkt *pkt, int map)
+{
+ if (map) {
+ struct usbhsh_request *ureq = usbhsh_pkt_to_ureq(pkt);
+ struct urb *urb = ureq->urb;
+
+ /* it can not use scatter/gather */
+ if (urb->num_sgs)
+ return -EINVAL;
+
+ pkt->dma = urb->transfer_dma;
+ if (!pkt->dma)
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * for hc_driver
+ */
+static int usbhsh_host_start(struct usb_hcd *hcd)
+{
+ return 0;
+}
+
+static void usbhsh_host_stop(struct usb_hcd *hcd)
+{
+}
+
+static int usbhsh_urb_enqueue(struct usb_hcd *hcd,
+ struct urb *urb,
+ gfp_t mem_flags)
+{
+ 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_host_endpoint *ep = urb->ep;
+ struct usbhsh_device *new_udev = NULL;
+ int is_dir_in = usb_pipein(urb->pipe);
+ 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) {
+ dev_err(dev, "urb link failed\n");
+ goto usbhsh_urb_enqueue_error_not_linked;
+ }
+
+ /*
+ * attach udev if needed
+ * see [image of mod_host]
+ */
+ 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;
+ }
+ }
+
+ /*
+ * attach endpoint if needed
+ * see [image of mod_host]
+ */
+ 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;
+ }
+ }
+
+ /*
+ * attach pipe to endpoint
+ * see [image of mod_host]
+ */
+ ret = usbhsh_pipe_attach(hpriv, urb);
+ if (ret < 0) {
+ dev_err(dev, "pipe attach failed\n");
+ goto usbhsh_urb_enqueue_error_free_endpoint;
+ }
+
+ /*
+ * push packet
+ */
+ if (usb_pipecontrol(urb->pipe))
+ ret = usbhsh_dcp_queue_push(hcd, urb, mem_flags);
+ else
+ ret = usbhsh_queue_push(hcd, urb, mem_flags);
+
+ return ret;
+
+usbhsh_urb_enqueue_error_free_endpoint:
+ usbhsh_endpoint_detach(hpriv, ep);
+usbhsh_urb_enqueue_error_free_device:
+ if (new_udev)
+ usbhsh_device_detach(hpriv, new_udev);
+usbhsh_urb_enqueue_error_not_linked:
+
+ dev_dbg(dev, "%s error\n", __func__);
+
+ return ret;
+}
+
+static int usbhsh_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+{
+ struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
+ struct usbhsh_request *ureq = usbhsh_urb_to_ureq(urb);
+
+ if (ureq) {
+ 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;
+}
+
+static void usbhsh_endpoint_disable(struct usb_hcd *hcd,
+ struct usb_host_endpoint *ep)
+{
+ struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep);
+ struct usbhsh_device *udev;
+ struct usbhsh_hpriv *hpriv;
+
+ /*
+ * this function might be called manytimes by same hcd/ep
+ * in-endpoint == out-endpoint if ep == dcp.
+ */
+ if (!uep)
+ return;
+
+ udev = usbhsh_uep_to_udev(uep);
+ hpriv = usbhsh_hcd_to_hpriv(hcd);
+
+ usbhsh_endpoint_detach(hpriv, ep);
+
+ /*
+ * if there is no endpoint,
+ * free device
+ */
+ if (!usbhsh_device_has_endpoint(udev))
+ usbhsh_device_detach(hpriv, udev);
+}
+
+static int usbhsh_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+ struct usbhsh_hpriv *hpriv = usbhsh_hcd_to_hpriv(hcd);
+ int roothub_id = 1; /* only 1 root hub */
+
+ /*
+ * does port stat was changed ?
+ * check USB_PORT_STAT_C_xxx << 16
+ */
+ if (usbhsh_port_stat_get(hpriv) & 0xFFFF0000)
+ *buf = (1 << roothub_id);
+ else
+ *buf = 0;
+
+ return !!(*buf);
+}
+
+static int __usbhsh_hub_hub_feature(struct usbhsh_hpriv *hpriv,
+ u16 typeReq, u16 wValue,
+ u16 wIndex, char *buf, u16 wLength)
+{
+ struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ switch (wValue) {
+ case C_HUB_OVER_CURRENT:
+ case C_HUB_LOCAL_POWER:
+ dev_dbg(dev, "%s :: C_HUB_xx\n", __func__);
+ return 0;
+ }
+
+ return -EPIPE;
+}
+
+static int __usbhsh_hub_port_feature(struct usbhsh_hpriv *hpriv,
+ u16 typeReq, u16 wValue,
+ u16 wIndex, char *buf, u16 wLength)
+{
+ struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int enable = (typeReq == SetPortFeature);
+ int speed, i, timeout = 128;
+ int roothub_id = 1; /* only 1 root hub */
+
+ /* common error */
+ if (wIndex > roothub_id || wLength != 0)
+ return -EPIPE;
+
+ /* check wValue */
+ switch (wValue) {
+ case USB_PORT_FEAT_POWER:
+ usbhs_vbus_ctrl(priv, enable);
+ dev_dbg(dev, "%s :: USB_PORT_FEAT_POWER\n", __func__);
+ break;
+
+ case USB_PORT_FEAT_ENABLE:
+ case USB_PORT_FEAT_SUSPEND:
+ case USB_PORT_FEAT_C_ENABLE:
+ case USB_PORT_FEAT_C_SUSPEND:
+ case USB_PORT_FEAT_C_CONNECTION:
+ case USB_PORT_FEAT_C_OVER_CURRENT:
+ case USB_PORT_FEAT_C_RESET:
+ dev_dbg(dev, "%s :: USB_PORT_FEAT_xxx\n", __func__);
+ break;
+
+ case USB_PORT_FEAT_RESET:
+ if (!enable)
+ break;
+
+ usbhsh_port_stat_clear(hpriv,
+ 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);
+
+ for (i = 0; i < timeout ; i++) {
+ switch (usbhs_bus_get_speed(priv)) {
+ case USB_SPEED_LOW:
+ speed = USB_PORT_STAT_LOW_SPEED;
+ goto got_usb_bus_speed;
+ case USB_SPEED_HIGH:
+ speed = USB_PORT_STAT_HIGH_SPEED;
+ goto got_usb_bus_speed;
+ case USB_SPEED_FULL:
+ speed = 0;
+ goto got_usb_bus_speed;
+ }
+
+ msleep(20);
+ }
+ return -EPIPE;
+
+got_usb_bus_speed:
+ usbhsh_port_stat_set(hpriv, speed);
+ usbhsh_port_stat_set(hpriv, USB_PORT_STAT_ENABLE);
+
+ dev_dbg(dev, "%s :: USB_PORT_FEAT_RESET (speed = %d)\n",
+ __func__, speed);
+
+ /* status change is not needed */
+ return 0;
+
+ default:
+ return -EPIPE;
+ }
+
+ /* set/clear status */
+ if (enable)
+ usbhsh_port_stat_set(hpriv, (1 << wValue));
+ else
+ usbhsh_port_stat_clear(hpriv, (1 << wValue));
+
+ return 0;
+}
+
+static int __usbhsh_hub_get_status(struct usbhsh_hpriv *hpriv,
+ u16 typeReq, u16 wValue,
+ u16 wIndex, char *buf, u16 wLength)
+{
+ struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
+ struct usb_hub_descriptor *desc = (struct usb_hub_descriptor *)buf;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int roothub_id = 1; /* only 1 root hub */
+
+ switch (typeReq) {
+ case GetHubStatus:
+ dev_dbg(dev, "%s :: GetHubStatus\n", __func__);
+
+ *buf = 0x00;
+ break;
+
+ case GetPortStatus:
+ if (wIndex != roothub_id)
+ return -EPIPE;
+
+ dev_dbg(dev, "%s :: GetPortStatus\n", __func__);
+ *(__le32 *)buf = cpu_to_le32(usbhsh_port_stat_get(hpriv));
+ break;
+
+ case GetHubDescriptor:
+ desc->bDescriptorType = USB_DT_HUB;
+ desc->bHubContrCurrent = 0;
+ desc->bNbrPorts = roothub_id;
+ desc->bDescLength = 9;
+ desc->bPwrOn2PwrGood = 0;
+ desc->wHubCharacteristics =
+ cpu_to_le16(HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_NO_OCPM);
+ desc->u.hs.DeviceRemovable[0] = (roothub_id << 1);
+ desc->u.hs.DeviceRemovable[1] = ~0;
+ dev_dbg(dev, "%s :: GetHubDescriptor\n", __func__);
+ break;
+ }
+
+ return 0;
+}
+
+static int usbhsh_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+ u16 wIndex, char *buf, u16 wLength)
+{
+ 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);
+ int ret = -EPIPE;
+
+ switch (typeReq) {
+
+ /* Hub Feature */
+ case ClearHubFeature:
+ case SetHubFeature:
+ ret = __usbhsh_hub_hub_feature(hpriv, typeReq,
+ wValue, wIndex, buf, wLength);
+ break;
+
+ /* Port Feature */
+ case SetPortFeature:
+ case ClearPortFeature:
+ ret = __usbhsh_hub_port_feature(hpriv, typeReq,
+ wValue, wIndex, buf, wLength);
+ break;
+
+ /* Get status */
+ case GetHubStatus:
+ case GetPortStatus:
+ case GetHubDescriptor:
+ ret = __usbhsh_hub_get_status(hpriv, typeReq,
+ wValue, wIndex, buf, wLength);
+ break;
+ }
+
+ dev_dbg(dev, "typeReq = %x, ret = %d, port_stat = %x\n",
+ typeReq, ret, usbhsh_port_stat_get(hpriv));
+
+ return ret;
+}
+
+static int usbhsh_bus_nop(struct usb_hcd *hcd)
+{
+ /* nothing to do */
+ return 0;
+}
+
+static struct hc_driver usbhsh_driver = {
+ .description = usbhsh_hcd_name,
+ .hcd_priv_size = sizeof(struct usbhsh_hpriv),
+
+ /*
+ * generic hardware linkage
+ */
+ .flags = HCD_USB2,
+
+ .start = usbhsh_host_start,
+ .stop = usbhsh_host_stop,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = usbhsh_urb_enqueue,
+ .urb_dequeue = usbhsh_urb_dequeue,
+ .endpoint_disable = usbhsh_endpoint_disable,
+
+ /*
+ * root hub
+ */
+ .hub_status_data = usbhsh_hub_status_data,
+ .hub_control = usbhsh_hub_control,
+ .bus_suspend = usbhsh_bus_nop,
+ .bus_resume = usbhsh_bus_nop,
+};
+
+/*
+ * interrupt functions
+ */
+static int usbhsh_irq_attch(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ dev_dbg(dev, "device attached\n");
+
+ 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;
+}
+
+static int usbhsh_irq_dtch(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ dev_dbg(dev, "device detached\n");
+
+ 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 int usbhsh_irq_setup_ack(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ dev_dbg(dev, "setup packet OK\n");
+
+ complete(&hpriv->setup_ack_done); /* see usbhsh_urb_enqueue() */
+
+ return 0;
+}
+
+static int usbhsh_irq_setup_err(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ dev_dbg(dev, "setup packet Err\n");
+
+ complete(&hpriv->setup_ack_done); /* see usbhsh_urb_enqueue() */
+
+ return 0;
+}
+
+/*
+ * module start/stop
+ */
+static void usbhsh_pipe_init_for_host(struct usbhs_priv *priv)
+{
+ struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+ struct usbhs_pipe *pipe;
+ u32 *pipe_type = usbhs_get_dparam(priv, pipe_type);
+ int pipe_size = usbhs_get_dparam(priv, pipe_size);
+ int old_type, dir_in, i;
+
+ /* init all pipe */
+ old_type = USB_ENDPOINT_XFER_CONTROL;
+ for (i = 0; i < pipe_size; i++) {
+
+ /*
+ * data "output" will be finished as soon as possible,
+ * but there is no guaranty at data "input" case.
+ *
+ * "input" needs "standby" pipe.
+ * So, "input" direction pipe > "output" direction pipe
+ * is good idea.
+ *
+ * 1st USB_ENDPOINT_XFER_xxx will be output direction,
+ * and the other will be input direction here.
+ *
+ * ex)
+ * ...
+ * USB_ENDPOINT_XFER_ISOC -> dir out
+ * USB_ENDPOINT_XFER_ISOC -> dir in
+ * USB_ENDPOINT_XFER_BULK -> dir out
+ * USB_ENDPOINT_XFER_BULK -> dir in
+ * USB_ENDPOINT_XFER_BULK -> dir in
+ * ...
+ */
+ dir_in = (pipe_type[i] == old_type);
+ old_type = pipe_type[i];
+
+ if (USB_ENDPOINT_XFER_CONTROL == pipe_type[i]) {
+ pipe = usbhs_dcp_malloc(priv);
+ usbhsh_hpriv_to_dcp(hpriv) = pipe;
+ } else {
+ pipe = usbhs_pipe_malloc(priv,
+ pipe_type[i],
+ dir_in);
+ }
+
+ pipe->mod_private = NULL;
+ }
+}
+
+static int usbhsh_start(struct usbhs_priv *priv)
+{
+ struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+ struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
+ struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int ret;
+
+ /* add hcd */
+ ret = usb_add_hcd(hcd, 0, 0);
+ if (ret < 0)
+ return 0;
+ device_wakeup_enable(hcd->self.controller);
+
+ /*
+ * pipe initialize and enable DCP
+ */
+ usbhs_fifo_init(priv);
+ usbhs_pipe_init(priv,
+ usbhsh_dma_map_ctrl);
+ usbhsh_pipe_init_for_host(priv);
+
+ /*
+ * system config enble
+ * - HI speed
+ * - host
+ * - usb module
+ */
+ usbhs_sys_host_ctrl(priv, 1);
+
+ /*
+ * enable irq callback
+ */
+ mod->irq_attch = usbhsh_irq_attch;
+ mod->irq_dtch = usbhsh_irq_dtch;
+ mod->irq_sack = usbhsh_irq_setup_ack;
+ mod->irq_sign = usbhsh_irq_setup_err;
+ usbhs_irq_callback_update(priv, mod);
+
+ dev_dbg(dev, "start host\n");
+
+ return ret;
+}
+
+static int usbhsh_stop(struct usbhs_priv *priv)
+{
+ struct usbhsh_hpriv *hpriv = usbhsh_priv_to_hpriv(priv);
+ struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
+ struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ /*
+ * disable irq callback
+ */
+ mod->irq_attch = NULL;
+ mod->irq_dtch = NULL;
+ mod->irq_sack = NULL;
+ mod->irq_sign = NULL;
+ usbhs_irq_callback_update(priv, mod);
+
+ usb_remove_hcd(hcd);
+
+ /* disable sys */
+ usbhs_sys_host_ctrl(priv, 0);
+
+ dev_dbg(dev, "quit host\n");
+
+ return 0;
+}
+
+int usbhs_mod_host_probe(struct usbhs_priv *priv)
+{
+ struct usbhsh_hpriv *hpriv;
+ struct usb_hcd *hcd;
+ struct usbhsh_device *udev;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int i;
+
+ /* initialize hcd */
+ hcd = usb_create_hcd(&usbhsh_driver, dev, usbhsh_hcd_name);
+ if (!hcd) {
+ dev_err(dev, "Failed to create hcd\n");
+ return -ENOMEM;
+ }
+ hcd->has_tt = 1; /* for low/full speed */
+
+ /*
+ * CAUTION
+ *
+ * There is no guarantee that it is possible to access usb module here.
+ * Don't accesses to it.
+ * The accesse will be enable after "usbhsh_start"
+ */
+
+ hpriv = usbhsh_hcd_to_hpriv(hcd);
+
+ /*
+ * register itself
+ */
+ usbhs_mod_register(priv, &hpriv->mod, USBHS_HOST);
+
+ /* init hpriv */
+ hpriv->mod.name = "host";
+ hpriv->mod.start = usbhsh_start;
+ hpriv->mod.stop = usbhsh_stop;
+ usbhsh_port_stat_init(hpriv);
+
+ /* init all device */
+ usbhsh_for_each_udev_with_dev0(udev, hpriv, i) {
+ udev->usbv = NULL;
+ INIT_LIST_HEAD(&udev->ep_list_head);
+ }
+
+ dev_info(dev, "host probed\n");
+
+ return 0;
+}
+
+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);
+
+ usb_put_hcd(hcd);
+
+ return 0;
+}