| /* |
| * 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 */ |
| }; |
| |
| #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, pos = (h)->udev + i; \ |
| i < USBHSH_DEVICE_MAX; \ |
| i++, pos = (h)->udev + 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 (unlikely(usbhsh_uep_to_pipe(uep))) { |
| dev_err(dev, "uep already has pipe\n"); |
| 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: |
| 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; |
| |
| /******************** 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 { |
| 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 |
| */ |
| 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_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, 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 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) { |
| 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] |
| */ |
| 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; |
| } |
| |
| /* |
| * 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); |
| struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); |
| struct device *dev = usbhs_priv_to_dev(priv); |
| 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; |
| |
| dev_dbg(dev, "%s (%02x)\n", __func__, *buf); |
| |
| 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 = 0x29; |
| desc->bHubContrCurrent = 0; |
| desc->bNbrPorts = roothub_id; |
| desc->bDescLength = 9; |
| desc->bPwrOn2PwrGood = 0; |
| desc->wHubCharacteristics = cpu_to_le16(0x0011); |
| 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; |
| |
| /* |
| * pipe initialize and enable DCP |
| */ |
| usbhs_pipe_init(priv, |
| usbhsh_dma_map_ctrl); |
| usbhs_fifo_init(priv); |
| 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; |
| } |