drivers/usb/renesas_usbhs/mod_host.c

Source file repositories/reference/linux-study-clean/drivers/usb/renesas_usbhs/mod_host.c

File Facts

System
Linux kernel
Corpus path
drivers/usb/renesas_usbhs/mod_host.c
Extension
.c
Size
37433 bytes
Lines
1575
Domain
Driver Families
Bucket
drivers/usb
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct usbhsh_request {
	struct urb		*urb;
	struct usbhs_pkt	pkt;
};

struct usbhsh_device {
	struct usb_device	*usbv;
	struct list_head	ep_list_head; /* list of usbhsh_ep */
};

struct usbhsh_ep {
	struct usbhs_pipe	*pipe;   /* attached pipe */
	struct usbhsh_device	*udev;   /* attached udev */
	struct usb_host_endpoint *ep;
	struct list_head	ep_list; /* list to usbhsh_device */
	unsigned int		counter; /* pipe attach counter */
};

#define USBHSH_DEVICE_MAX	10 /* see DEVADDn / DCPMAXP / PIPEMAXP */
#define USBHSH_PORT_MAX		 7 /* see DEVADDn :: HUBPORT */
struct usbhsh_hpriv {
	struct usbhs_mod	mod;
	struct usbhs_pipe	*dcp;

	struct usbhsh_device	udev[USBHSH_DEVICE_MAX];

	u32	port_stat;	/* USB_PORT_STAT_xxx */

	struct completion	setup_ack_done;
};


static const char usbhsh_hcd_name[] = "renesas_usbhs host";

/*
 *		macro
 */
#define usbhsh_priv_to_hpriv(priv) \
	container_of(usbhs_mod_get(priv, USBHS_HOST), struct usbhsh_hpriv, mod)

#define __usbhsh_for_each_udev(start, pos, h, i)	\
	for ((i) = start;						\
	     ((i) < USBHSH_DEVICE_MAX) && ((pos) = (h)->udev + (i));	\
	     (i)++)

#define usbhsh_for_each_udev(pos, hpriv, i)	\
	__usbhsh_for_each_udev(1, pos, hpriv, i)

#define usbhsh_for_each_udev_with_dev0(pos, hpriv, i)	\
	__usbhsh_for_each_udev(0, pos, hpriv, i)

#define usbhsh_hcd_to_hpriv(h)	(struct usbhsh_hpriv *)((h)->hcd_priv)
#define usbhsh_hcd_to_dev(h)	((h)->self.controller)

#define usbhsh_hpriv_to_priv(h)	((h)->mod.priv)
#define usbhsh_hpriv_to_dcp(h)	((h)->dcp)
#define usbhsh_hpriv_to_hcd(h)	\
	container_of((void *)h, struct usb_hcd, hcd_priv)

#define usbhsh_ep_to_uep(u)	((u)->hcpriv)
#define usbhsh_uep_to_pipe(u)	((u)->pipe)
#define usbhsh_uep_to_udev(u)	((u)->udev)
#define usbhsh_uep_to_ep(u)	((u)->ep)

#define usbhsh_urb_to_ureq(u)	((u)->hcpriv)
#define usbhsh_urb_to_usbv(u)	((u)->dev)

#define usbhsh_usbv_to_udev(d)	dev_get_drvdata(&(d)->dev)

#define usbhsh_udev_to_usbv(h)	((h)->usbv)
#define usbhsh_udev_is_used(h)	usbhsh_udev_to_usbv(h)

#define usbhsh_pipe_to_uep(p)	((p)->mod_private)

#define usbhsh_device_parent(d)		(usbhsh_usbv_to_udev((d)->usbv->parent))
#define usbhsh_device_hubport(d)	((d)->usbv->portnum)
#define usbhsh_device_number(h, d)	((int)((d) - (h)->udev))
#define usbhsh_device_nth(h, d)		((h)->udev + d)
#define usbhsh_device0(h)		usbhsh_device_nth(h, 0)

#define usbhsh_port_stat_init(h)	((h)->port_stat = 0)
#define usbhsh_port_stat_set(h, s)	((h)->port_stat |= (s))
#define usbhsh_port_stat_clear(h, s)	((h)->port_stat &= ~(s))
#define usbhsh_port_stat_get(h)		((h)->port_stat)

#define usbhsh_pkt_to_ureq(p)	\
	container_of((void *)p, struct usbhsh_request, pkt)

/*
 *		req alloc/free

Annotation

Implementation Notes