forked from Minki/linux
4825093e9d
current mod_host used usbhs_endpoint_alloc/free(), but allocated variable was attached to each xx->hcpriv. The intuitively clear name was not xxx_alloc/free() but xxx_attach/detach(). Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
1313 lines
31 KiB
C
1313 lines
31 KiB
C
/*
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* Renesas USB driver
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*
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* Copyright (C) 2011 Renesas Solutions Corp.
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* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <linux/io.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/usb.h>
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#include <linux/usb/hcd.h>
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#include "common.h"
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/*
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*** HARDWARE LIMITATION ***
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*
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* 1) renesas_usbhs has a limited number of controllable devices.
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* it can control only 9 devices in generally.
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* see DEVADDn / DCPMAXP / PIPEMAXP.
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*
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* 2) renesas_usbhs pipe number is limited.
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* the pipe will be re-used for each devices.
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* so, software should control DATA0/1 sequence of each devices.
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*/
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/*
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* image of mod_host
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*
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* +--------+
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* | udev 0 | --> it is used when set address
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* +--------+
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*
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* +--------+ pipes are reused for each uep.
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* | udev 1 |-+- [uep 0 (dcp) ] --+ pipe will be switched when
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* +--------+ | | target device was changed
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* +- [uep 1 (bulk)] --|---+ +--------------+
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* | +--------------> | pipe0 (dcp) |
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* +- [uep 2 (bulk)] --|---|---+ +--------------+
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* | | | | pipe1 (isoc) |
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* +--------+ | | | +--------------+
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* | udev 2 |-+- [uep 0 (dcp) ] --+ +-- |------> | pipe2 (bulk) |
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* +--------+ | | | | +--------------+
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* +- [uep 1 (int) ] --|-+ | +------> | pipe3 (bulk) |
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* | | | | +--------------+
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* +--------+ | +-|---|------> | pipe4 (int) |
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* | udev 3 |-+- [uep 0 (dcp) ] --+ | | +--------------+
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* +--------+ | | | | .... |
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* +- [uep 1 (bulk)] ------+ | | .... |
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* | |
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* +- [uep 2 (bulk)]-----------+
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*/
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/*
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* struct
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*/
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struct usbhsh_pipe_info {
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unsigned int usr_cnt; /* see usbhsh_endpoint_alloc() */
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};
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struct usbhsh_request {
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struct urb *urb;
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struct usbhs_pkt pkt;
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};
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struct usbhsh_device {
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struct usb_device *usbv;
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struct list_head ep_list_head; /* list of usbhsh_ep */
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};
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struct usbhsh_ep {
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struct usbhs_pipe *pipe;
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struct usbhsh_device *udev; /* attached udev */
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struct list_head ep_list; /* list to usbhsh_device */
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int maxp;
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};
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#define USBHSH_DEVICE_MAX 10 /* see DEVADDn / DCPMAXP / PIPEMAXP */
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#define USBHSH_PORT_MAX 7 /* see DEVADDn :: HUBPORT */
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struct usbhsh_hpriv {
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struct usbhs_mod mod;
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struct usbhs_pipe *dcp;
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struct usbhsh_device udev[USBHSH_DEVICE_MAX];
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struct usbhsh_pipe_info *pipe_info;
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int pipe_size;
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u32 port_stat; /* USB_PORT_STAT_xxx */
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struct completion setup_ack_done;
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};
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static const char usbhsh_hcd_name[] = "renesas_usbhs host";
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/*
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* macro
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*/
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#define usbhsh_priv_to_hpriv(priv) \
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container_of(usbhs_mod_get(priv, USBHS_HOST), struct usbhsh_hpriv, mod)
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#define __usbhsh_for_each_hpipe(start, pos, h, i) \
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for (i = start, pos = (h)->hpipe + i; \
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i < (h)->hpipe_size; \
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i++, pos = (h)->hpipe + i)
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#define usbhsh_for_each_hpipe(pos, hpriv, i) \
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__usbhsh_for_each_hpipe(1, pos, hpriv, i)
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#define usbhsh_for_each_hpipe_with_dcp(pos, hpriv, i) \
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__usbhsh_for_each_hpipe(0, pos, hpriv, i)
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#define __usbhsh_for_each_udev(start, pos, h, i) \
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for (i = start, pos = (h)->udev + i; \
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i < USBHSH_DEVICE_MAX; \
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i++, pos = (h)->udev + i)
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#define usbhsh_for_each_udev(pos, hpriv, i) \
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__usbhsh_for_each_udev(1, pos, hpriv, i)
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#define usbhsh_for_each_udev_with_dev0(pos, hpriv, i) \
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__usbhsh_for_each_udev(0, pos, hpriv, i)
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#define usbhsh_hcd_to_hpriv(h) (struct usbhsh_hpriv *)((h)->hcd_priv)
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#define usbhsh_hcd_to_dev(h) ((h)->self.controller)
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#define usbhsh_hpriv_to_priv(h) ((h)->mod.priv)
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#define usbhsh_hpriv_to_dcp(h) ((h)->dcp)
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#define usbhsh_hpriv_to_hcd(h) \
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container_of((void *)h, struct usb_hcd, hcd_priv)
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#define usbhsh_ep_to_uep(u) ((u)->hcpriv)
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#define usbhsh_uep_to_pipe(u) ((u)->pipe)
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#define usbhsh_uep_to_udev(u) ((u)->udev)
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#define usbhsh_urb_to_ureq(u) ((u)->hcpriv)
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#define usbhsh_urb_to_usbv(u) ((u)->dev)
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#define usbhsh_usbv_to_udev(d) dev_get_drvdata(&(d)->dev)
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#define usbhsh_udev_to_usbv(h) ((h)->usbv)
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#define usbhsh_udev_is_used(h) usbhsh_udev_to_usbv(h)
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#define usbhsh_pipe_info(p) ((p)->mod_private)
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#define usbhsh_device_parent(d) (usbhsh_usbv_to_udev((d)->usbv->parent))
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#define usbhsh_device_hubport(d) ((d)->usbv->portnum)
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#define usbhsh_device_number(h, d) ((int)((d) - (h)->udev))
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#define usbhsh_device_nth(h, d) ((h)->udev + d)
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#define usbhsh_device0(h) usbhsh_device_nth(h, 0)
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#define usbhsh_port_stat_init(h) ((h)->port_stat = 0)
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#define usbhsh_port_stat_set(h, s) ((h)->port_stat |= (s))
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#define usbhsh_port_stat_clear(h, s) ((h)->port_stat &= ~(s))
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#define usbhsh_port_stat_get(h) ((h)->port_stat)
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#define usbhsh_pkt_to_ureq(p) \
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container_of((void *)p, struct usbhsh_request, pkt)
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/*
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* req alloc/free
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*/
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static struct usbhsh_request *usbhsh_ureq_alloc(struct usbhsh_hpriv *hpriv,
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struct urb *urb,
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gfp_t mem_flags)
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{
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struct usbhsh_request *ureq;
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struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
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struct device *dev = usbhs_priv_to_dev(priv);
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ureq = kzalloc(sizeof(struct usbhsh_request), mem_flags);
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if (!ureq) {
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dev_err(dev, "ureq alloc fail\n");
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return NULL;
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}
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usbhs_pkt_init(&ureq->pkt);
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ureq->urb = urb;
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usbhsh_urb_to_ureq(urb) = ureq;
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return ureq;
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}
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static void usbhsh_ureq_free(struct usbhsh_hpriv *hpriv,
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struct usbhsh_request *ureq)
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{
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usbhsh_urb_to_ureq(ureq->urb) = NULL;
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ureq->urb = NULL;
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kfree(ureq);
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}
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/*
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* device control
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*/
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static int usbhsh_connected_to_rhdev(struct usb_hcd *hcd,
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struct usbhsh_device *udev)
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{
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struct usb_device *usbv = usbhsh_udev_to_usbv(udev);
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return hcd->self.root_hub == usbv->parent;
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}
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static int usbhsh_device_has_endpoint(struct usbhsh_device *udev)
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{
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return !list_empty(&udev->ep_list_head);
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}
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static struct usbhsh_device *usbhsh_device_alloc(struct usbhsh_hpriv *hpriv,
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struct urb *urb)
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{
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struct usbhsh_device *udev = NULL;
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struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
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struct device *dev = usbhsh_hcd_to_dev(hcd);
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struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
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struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
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unsigned long flags;
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u16 upphub, hubport;
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int i;
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/******************** spin lock ********************/
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usbhs_lock(priv, flags);
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/*
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* find device
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*/
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if (0 == usb_pipedevice(urb->pipe)) {
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/*
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* device0 is special case
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*/
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udev = usbhsh_device0(hpriv);
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if (usbhsh_udev_is_used(udev))
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udev = NULL;
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} else {
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struct usbhsh_device *pos;
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/*
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* find unused device
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*/
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usbhsh_for_each_udev(pos, hpriv, i) {
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if (usbhsh_udev_is_used(pos))
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continue;
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udev = pos;
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break;
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}
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}
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if (udev) {
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/*
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* usbhsh_usbv_to_udev()
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* usbhsh_udev_to_usbv()
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* will be enable
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*/
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dev_set_drvdata(&usbv->dev, udev);
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udev->usbv = usbv;
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}
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usbhs_unlock(priv, flags);
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/******************** spin unlock ******************/
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if (!udev) {
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dev_err(dev, "no free usbhsh_device\n");
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return NULL;
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}
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if (usbhsh_device_has_endpoint(udev))
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dev_warn(dev, "udev have old endpoint\n");
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/* uep will be attached */
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INIT_LIST_HEAD(&udev->ep_list_head);
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upphub = 0;
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hubport = 0;
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if (!usbhsh_connected_to_rhdev(hcd, udev)) {
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/* if udev is not connected to rhdev, it means parent is Hub */
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struct usbhsh_device *parent = usbhsh_device_parent(udev);
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upphub = usbhsh_device_number(hpriv, parent);
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hubport = usbhsh_device_hubport(udev);
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dev_dbg(dev, "%s connecte to Hub [%d:%d](%p)\n", __func__,
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upphub, hubport, parent);
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}
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/* set device config */
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usbhs_set_device_config(priv,
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usbhsh_device_number(hpriv, udev),
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upphub, hubport, usbv->speed);
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dev_dbg(dev, "%s [%d](%p)\n", __func__,
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usbhsh_device_number(hpriv, udev), udev);
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return udev;
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}
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static void usbhsh_device_free(struct usbhsh_hpriv *hpriv,
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struct usbhsh_device *udev)
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{
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struct usb_hcd *hcd = usbhsh_hpriv_to_hcd(hpriv);
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struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
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struct device *dev = usbhsh_hcd_to_dev(hcd);
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struct usb_device *usbv = usbhsh_udev_to_usbv(udev);
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unsigned long flags;
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dev_dbg(dev, "%s [%d](%p)\n", __func__,
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usbhsh_device_number(hpriv, udev), udev);
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if (usbhsh_device_has_endpoint(udev))
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dev_warn(dev, "udev still have endpoint\n");
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/******************** spin lock ********************/
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usbhs_lock(priv, flags);
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/*
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* usbhsh_usbv_to_udev()
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* usbhsh_udev_to_usbv()
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* will be disable
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*/
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dev_set_drvdata(&usbv->dev, NULL);
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udev->usbv = NULL;
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usbhs_unlock(priv, flags);
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/******************** spin unlock ******************/
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}
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/*
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* end-point control
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*/
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static int usbhsh_endpoint_attach(struct usbhsh_hpriv *hpriv,
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struct urb *urb,
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gfp_t mem_flags)
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{
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struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
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struct usb_device *usbv = usbhsh_urb_to_usbv(urb);
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struct usbhsh_device *udev = usbhsh_usbv_to_udev(usbv);
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struct usb_host_endpoint *ep = urb->ep;
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struct usbhsh_ep *uep;
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struct usbhsh_pipe_info *info;
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struct usbhs_pipe *best_pipe = NULL;
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struct device *dev = usbhs_priv_to_dev(priv);
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struct usb_endpoint_descriptor *desc = &ep->desc;
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unsigned long flags;
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uep = kzalloc(sizeof(struct usbhsh_ep), mem_flags);
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if (!uep) {
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dev_err(dev, "usbhsh_ep alloc fail\n");
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return -ENOMEM;
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}
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/******************** spin lock ********************/
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usbhs_lock(priv, flags);
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/*
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* find best pipe for endpoint
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* see
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* HARDWARE LIMITATION
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*/
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if (usb_endpoint_xfer_control(desc)) {
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/* best pipe is DCP */
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best_pipe = usbhsh_hpriv_to_dcp(hpriv);
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} else {
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struct usbhs_pipe *pipe;
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unsigned int min_usr = ~0;
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int dir_in_req = !!usb_pipein(urb->pipe);
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int i, dir_in;
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usbhs_for_each_pipe(pipe, priv, i) {
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if (!usbhs_pipe_type_is(pipe, usb_endpoint_type(desc)))
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continue;
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dir_in = !!usbhs_pipe_is_dir_in(pipe);
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if (0 != (dir_in - dir_in_req))
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continue;
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info = usbhsh_pipe_info(pipe);
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if (min_usr > info->usr_cnt) {
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min_usr = info->usr_cnt;
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best_pipe = pipe;
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}
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}
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}
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if (best_pipe) {
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/* update pipe user count */
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info = usbhsh_pipe_info(best_pipe);
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info->usr_cnt++;
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/* init this endpoint, and attach it to udev */
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INIT_LIST_HEAD(&uep->ep_list);
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list_add_tail(&uep->ep_list, &udev->ep_list_head);
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}
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usbhs_unlock(priv, flags);
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/******************** spin unlock ******************/
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if (unlikely(!best_pipe)) {
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dev_err(dev, "couldn't find best pipe\n");
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kfree(uep);
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return -EIO;
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}
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/*
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* init uep
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*/
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uep->pipe = best_pipe;
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uep->maxp = usb_endpoint_maxp(desc);
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usbhsh_uep_to_udev(uep) = udev;
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usbhsh_ep_to_uep(ep) = uep;
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/*
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* usbhs_pipe_config_update() should be called after
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* usbhs_set_device_config()
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* see
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* DCPMAXP/PIPEMAXP
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*/
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usbhs_pipe_sequence_data0(uep->pipe);
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usbhs_pipe_config_update(uep->pipe,
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usbhsh_device_number(hpriv, udev),
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usb_endpoint_num(desc),
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uep->maxp);
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dev_dbg(dev, "%s [%d-%s](%p)\n", __func__,
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usbhsh_device_number(hpriv, udev),
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usbhs_pipe_name(uep->pipe), uep);
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return 0;
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}
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static void usbhsh_endpoint_detach(struct usbhsh_hpriv *hpriv,
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struct usb_host_endpoint *ep)
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{
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struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv);
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struct device *dev = usbhs_priv_to_dev(priv);
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struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep);
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struct usbhsh_pipe_info *info;
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unsigned long flags;
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if (!uep)
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return;
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dev_dbg(dev, "%s [%d-%s](%p)\n", __func__,
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usbhsh_device_number(hpriv, usbhsh_uep_to_udev(uep)),
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usbhs_pipe_name(uep->pipe), uep);
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/******************** spin lock ********************/
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usbhs_lock(priv, flags);
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info = usbhsh_pipe_info(uep->pipe);
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info->usr_cnt--;
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/* remove this endpoint from udev */
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list_del_init(&uep->ep_list);
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usbhsh_uep_to_udev(uep) = NULL;
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usbhsh_ep_to_uep(ep) = NULL;
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usbhs_unlock(priv, flags);
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/******************** spin unlock ******************/
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|
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kfree(uep);
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}
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|
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/*
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* queue push/pop
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*/
|
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static void usbhsh_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt)
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{
|
|
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);
|
|
|
|
dev_dbg(dev, "%s\n", __func__);
|
|
|
|
if (!urb) {
|
|
dev_warn(dev, "pkt doesn't have urb\n");
|
|
return;
|
|
}
|
|
|
|
urb->actual_length = pkt->actual;
|
|
usbhsh_ureq_free(hpriv, ureq);
|
|
|
|
usb_hcd_unlink_urb_from_ep(hcd, urb);
|
|
usb_hcd_giveback_urb(hcd, urb, 0);
|
|
}
|
|
|
|
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;
|
|
|
|
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
|
|
pipe->handler = &usbhs_fifo_pio_push_handler;
|
|
|
|
buf = (void *)(urb->transfer_buffer + urb->actual_length);
|
|
len = urb->transfer_buffer_length - urb->actual_length;
|
|
|
|
dev_dbg(dev, "%s\n", __func__);
|
|
usbhs_pkt_push(pipe, &ureq->pkt, usbhsh_queue_done,
|
|
buf, len, (urb->transfer_flags & URB_ZERO_PACKET));
|
|
usbhs_pkt_start(pipe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
if (usbhsh_is_request_address(urb)) {
|
|
/* FIXME */
|
|
req.wValue = 1;
|
|
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));
|
|
|
|
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);
|
|
|
|
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)
|
|
{
|
|
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_device *usbv = usbhsh_urb_to_usbv(urb);
|
|
struct usb_host_endpoint *ep = urb->ep;
|
|
struct usbhsh_device *udev, *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");
|
|
|
|
ret = usb_hcd_link_urb_to_ep(hcd, urb);
|
|
if (ret)
|
|
goto usbhsh_urb_enqueue_error_not_linked;
|
|
|
|
/*
|
|
* get udev
|
|
*/
|
|
udev = usbhsh_usbv_to_udev(usbv);
|
|
if (!udev) {
|
|
new_udev = usbhsh_device_alloc(hpriv, urb);
|
|
if (!new_udev)
|
|
goto usbhsh_urb_enqueue_error_not_linked;
|
|
|
|
udev = new_udev;
|
|
}
|
|
|
|
/*
|
|
* attach endpoint if needed
|
|
*/
|
|
if (!usbhsh_ep_to_uep(ep)) {
|
|
ret = usbhsh_endpoint_attach(hpriv, urb, mem_flags);
|
|
if (ret < 0)
|
|
goto usbhsh_urb_enqueue_error_free_device;
|
|
}
|
|
|
|
/*
|
|
* 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_device:
|
|
if (new_udev)
|
|
usbhsh_device_free(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)
|
|
usbhsh_ureq_free(hpriv, ureq);
|
|
|
|
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_free(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);
|
|
|
|
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 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,
|
|
};
|
|
|
|
/*
|
|
* 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);
|
|
|
|
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);
|
|
|
|
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 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);
|
|
int old_type, dir_in, i;
|
|
|
|
/* 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,
|
|
* 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 = pipe_info + i;
|
|
}
|
|
}
|
|
|
|
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_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 = usb_create_hcd(&usbhsh_driver, dev, usbhsh_hcd_name);
|
|
if (!hcd) {
|
|
dev_err(dev, "Failed to create hcd\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
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
|
|
*
|
|
* 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;
|
|
hpriv->pipe_info = pipe_info;
|
|
hpriv->pipe_size = pipe_size;
|
|
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;
|
|
|
|
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);
|
|
|
|
usb_put_hcd(hcd);
|
|
|
|
return 0;
|
|
}
|