Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
new file mode 100644
index 0000000..6c625b3
--- /dev/null
+++ b/drivers/usb/core/hcd.h
@@ -0,0 +1,476 @@
+/*
+ * Copyright (c) 2001-2002 by David Brownell
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+#ifdef __KERNEL__
+
+/* This file contains declarations of usbcore internals that are mostly
+ * used or exposed by Host Controller Drivers.
+ */
+
+/*
+ * USB Packet IDs (PIDs)
+ */
+#define USB_PID_UNDEF_0 0xf0
+#define USB_PID_OUT 0xe1
+#define USB_PID_ACK 0xd2
+#define USB_PID_DATA0 0xc3
+#define USB_PID_PING 0xb4 /* USB 2.0 */
+#define USB_PID_SOF 0xa5
+#define USB_PID_NYET 0x96 /* USB 2.0 */
+#define USB_PID_DATA2 0x87 /* USB 2.0 */
+#define USB_PID_SPLIT 0x78 /* USB 2.0 */
+#define USB_PID_IN 0x69
+#define USB_PID_NAK 0x5a
+#define USB_PID_DATA1 0x4b
+#define USB_PID_PREAMBLE 0x3c /* Token mode */
+#define USB_PID_ERR 0x3c /* USB 2.0: handshake mode */
+#define USB_PID_SETUP 0x2d
+#define USB_PID_STALL 0x1e
+#define USB_PID_MDATA 0x0f /* USB 2.0 */
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * USB Host Controller Driver (usb_hcd) framework
+ *
+ * Since "struct usb_bus" is so thin, you can't share much code in it.
+ * This framework is a layer over that, and should be more sharable.
+ */
+
+/*-------------------------------------------------------------------------*/
+
+struct usb_hcd { /* usb_bus.hcpriv points to this */
+
+ /*
+ * housekeeping
+ */
+ struct usb_bus self; /* hcd is-a bus */
+
+ const char *product_desc; /* product/vendor string */
+ char irq_descr[24]; /* driver + bus # */
+
+ struct timer_list rh_timer; /* drives root hub */
+
+ /*
+ * hardware info/state
+ */
+ const struct hc_driver *driver; /* hw-specific hooks */
+ unsigned saw_irq : 1;
+ unsigned can_wakeup:1; /* hw supports wakeup? */
+ unsigned remote_wakeup:1;/* sw should use wakeup? */
+ unsigned rh_registered:1;/* is root hub registered? */
+
+ int irq; /* irq allocated */
+ void __iomem *regs; /* device memory/io */
+ u64 rsrc_start; /* memory/io resource start */
+ u64 rsrc_len; /* memory/io resource length */
+
+#define HCD_BUFFER_POOLS 4
+ struct dma_pool *pool [HCD_BUFFER_POOLS];
+
+ int state;
+# define __ACTIVE 0x01
+# define __SUSPEND 0x04
+# define __TRANSIENT 0x80
+
+# define HC_STATE_HALT 0
+# define HC_STATE_RUNNING (__ACTIVE)
+# define HC_STATE_QUIESCING (__SUSPEND|__TRANSIENT|__ACTIVE)
+# define HC_STATE_RESUMING (__SUSPEND|__TRANSIENT)
+# define HC_STATE_SUSPENDED (__SUSPEND)
+
+#define HC_IS_RUNNING(state) ((state) & __ACTIVE)
+#define HC_IS_SUSPENDED(state) ((state) & __SUSPEND)
+
+ /* more shared queuing code would be good; it should support
+ * smarter scheduling, handle transaction translators, etc;
+ * input size of periodic table to an interrupt scheduler.
+ * (ohci 32, uhci 1024, ehci 256/512/1024).
+ */
+
+ /* The HC driver's private data is stored at the end of
+ * this structure.
+ */
+ unsigned long hcd_priv[0]
+ __attribute__ ((aligned (sizeof(unsigned long))));
+};
+
+/* 2.4 does this a bit differently ... */
+static inline struct usb_bus *hcd_to_bus (struct usb_hcd *hcd)
+{
+ return &hcd->self;
+}
+
+
+// urb.hcpriv is really hardware-specific
+
+struct hcd_timeout { /* timeouts we allocate */
+ struct list_head timeout_list;
+ struct timer_list timer;
+};
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * FIXME usb_operations should vanish or become hc_driver,
+ * when usb_bus and usb_hcd become the same thing.
+ */
+
+struct usb_operations {
+ int (*get_frame_number) (struct usb_device *usb_dev);
+ int (*submit_urb) (struct urb *urb, int mem_flags);
+ int (*unlink_urb) (struct urb *urb, int status);
+
+ /* allocate dma-consistent buffer for URB_DMA_NOMAPPING */
+ void *(*buffer_alloc)(struct usb_bus *bus, size_t size,
+ int mem_flags,
+ dma_addr_t *dma);
+ void (*buffer_free)(struct usb_bus *bus, size_t size,
+ void *addr, dma_addr_t dma);
+
+ void (*disable)(struct usb_device *udev,
+ struct usb_host_endpoint *ep);
+
+ /* global suspend/resume of bus */
+ int (*hub_suspend)(struct usb_bus *);
+ int (*hub_resume)(struct usb_bus *);
+};
+
+/* each driver provides one of these, and hardware init support */
+
+struct pt_regs;
+
+struct hc_driver {
+ const char *description; /* "ehci-hcd" etc */
+ const char *product_desc; /* product/vendor string */
+ size_t hcd_priv_size; /* size of private data */
+
+ /* irq handler */
+ irqreturn_t (*irq) (struct usb_hcd *hcd, struct pt_regs *regs);
+
+ int flags;
+#define HCD_MEMORY 0x0001 /* HC regs use memory (else I/O) */
+#define HCD_USB11 0x0010 /* USB 1.1 */
+#define HCD_USB2 0x0020 /* USB 2.0 */
+
+ /* called to init HCD and root hub */
+ int (*reset) (struct usb_hcd *hcd);
+ int (*start) (struct usb_hcd *hcd);
+
+ /* NOTE: these suspend/resume calls relate to the HC as
+ * a whole, not just the root hub; they're for bus glue.
+ */
+ /* called after all devices were suspended */
+ int (*suspend) (struct usb_hcd *hcd, u32 state);
+
+ /* called before any devices get resumed */
+ int (*resume) (struct usb_hcd *hcd);
+
+ /* cleanly make HCD stop writing memory and doing I/O */
+ void (*stop) (struct usb_hcd *hcd);
+
+ /* return current frame number */
+ int (*get_frame_number) (struct usb_hcd *hcd);
+
+ /* manage i/o requests, device state */
+ int (*urb_enqueue) (struct usb_hcd *hcd,
+ struct usb_host_endpoint *ep,
+ struct urb *urb,
+ int mem_flags);
+ int (*urb_dequeue) (struct usb_hcd *hcd, struct urb *urb);
+
+ /* hw synch, freeing endpoint resources that urb_dequeue can't */
+ void (*endpoint_disable)(struct usb_hcd *hcd,
+ struct usb_host_endpoint *ep);
+
+ /* root hub support */
+ int (*hub_status_data) (struct usb_hcd *hcd, char *buf);
+ int (*hub_control) (struct usb_hcd *hcd,
+ u16 typeReq, u16 wValue, u16 wIndex,
+ char *buf, u16 wLength);
+ int (*hub_suspend)(struct usb_hcd *);
+ int (*hub_resume)(struct usb_hcd *);
+ int (*start_port_reset)(struct usb_hcd *, unsigned port_num);
+};
+
+extern void usb_hcd_giveback_urb (struct usb_hcd *hcd, struct urb *urb, struct pt_regs *regs);
+
+extern struct usb_hcd *usb_create_hcd (const struct hc_driver *driver,
+ struct device *dev, char *bus_name);
+extern void usb_put_hcd (struct usb_hcd *hcd);
+extern int usb_add_hcd(struct usb_hcd *hcd,
+ unsigned int irqnum, unsigned long irqflags);
+extern void usb_remove_hcd(struct usb_hcd *hcd);
+
+#ifdef CONFIG_PCI
+struct pci_dev;
+struct pci_device_id;
+extern int usb_hcd_pci_probe (struct pci_dev *dev,
+ const struct pci_device_id *id);
+extern void usb_hcd_pci_remove (struct pci_dev *dev);
+
+#ifdef CONFIG_PM
+extern int usb_hcd_pci_suspend (struct pci_dev *dev, u32 state);
+extern int usb_hcd_pci_resume (struct pci_dev *dev);
+#endif /* CONFIG_PM */
+
+#endif /* CONFIG_PCI */
+
+/* pci-ish (pdev null is ok) buffer alloc/mapping support */
+int hcd_buffer_create (struct usb_hcd *hcd);
+void hcd_buffer_destroy (struct usb_hcd *hcd);
+
+void *hcd_buffer_alloc (struct usb_bus *bus, size_t size,
+ int mem_flags, dma_addr_t *dma);
+void hcd_buffer_free (struct usb_bus *bus, size_t size,
+ void *addr, dma_addr_t dma);
+
+/* generic bus glue, needed for host controllers that don't use PCI */
+extern irqreturn_t usb_hcd_irq (int irq, void *__hcd, struct pt_regs *r);
+extern void usb_hc_died (struct usb_hcd *hcd);
+
+/* -------------------------------------------------------------------------- */
+
+/* Enumeration is only for the hub driver, or HCD virtual root hubs */
+extern struct usb_device *usb_alloc_dev(struct usb_device *parent,
+ struct usb_bus *, unsigned port);
+extern int usb_new_device(struct usb_device *dev);
+extern void usb_disconnect(struct usb_device **);
+
+extern int usb_get_configuration(struct usb_device *dev);
+extern void usb_destroy_configuration(struct usb_device *dev);
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * HCD Root Hub support
+ */
+
+#include "hub.h"
+
+/* (shifted) direction/type/recipient from the USB 2.0 spec, table 9.2 */
+#define DeviceRequest \
+ ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
+#define DeviceOutRequest \
+ ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)
+
+#define InterfaceRequest \
+ ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
+
+#define EndpointRequest \
+ ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
+#define EndpointOutRequest \
+ ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)
+
+/* class requests from the USB 2.0 hub spec, table 11-15 */
+/* GetBusState and SetHubDescriptor are optional, omitted */
+#define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE)
+#define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE)
+#define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR)
+#define GetHubStatus (0xa000 | USB_REQ_GET_STATUS)
+#define GetPortStatus (0xa300 | USB_REQ_GET_STATUS)
+#define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE)
+#define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE)
+
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Generic bandwidth allocation constants/support
+ */
+#define FRAME_TIME_USECS 1000L
+#define BitTime(bytecount) (7 * 8 * bytecount / 6) /* with integer truncation */
+ /* Trying not to use worst-case bit-stuffing
+ of (7/6 * 8 * bytecount) = 9.33 * bytecount */
+ /* bytecount = data payload byte count */
+
+#define NS_TO_US(ns) ((ns + 500L) / 1000L)
+ /* convert & round nanoseconds to microseconds */
+
+extern void usb_claim_bandwidth (struct usb_device *dev, struct urb *urb,
+ int bustime, int isoc);
+extern void usb_release_bandwidth (struct usb_device *dev, struct urb *urb,
+ int isoc);
+
+/*
+ * Full/low speed bandwidth allocation constants/support.
+ */
+#define BW_HOST_DELAY 1000L /* nanoseconds */
+#define BW_HUB_LS_SETUP 333L /* nanoseconds */
+ /* 4 full-speed bit times (est.) */
+
+#define FRAME_TIME_BITS 12000L /* frame = 1 millisecond */
+#define FRAME_TIME_MAX_BITS_ALLOC (90L * FRAME_TIME_BITS / 100L)
+#define FRAME_TIME_MAX_USECS_ALLOC (90L * FRAME_TIME_USECS / 100L)
+
+extern int usb_check_bandwidth (struct usb_device *dev, struct urb *urb);
+
+/*
+ * Ceiling microseconds (typical) for that many bytes at high speed
+ * ISO is a bit less, no ACK ... from USB 2.0 spec, 5.11.3 (and needed
+ * to preallocate bandwidth)
+ */
+#define USB2_HOST_DELAY 5 /* nsec, guess */
+#define HS_USECS(bytes) NS_TO_US ( ((55 * 8 * 2083)/1000) \
+ + ((2083UL * (3167 + BitTime (bytes)))/1000) \
+ + USB2_HOST_DELAY)
+#define HS_USECS_ISO(bytes) NS_TO_US ( ((38 * 8 * 2083)/1000) \
+ + ((2083UL * (3167 + BitTime (bytes)))/1000) \
+ + USB2_HOST_DELAY)
+
+extern long usb_calc_bus_time (int speed, int is_input,
+ int isoc, int bytecount);
+
+/*-------------------------------------------------------------------------*/
+
+extern struct usb_bus *usb_alloc_bus (struct usb_operations *);
+
+extern int usb_hcd_register_root_hub (struct usb_device *usb_dev,
+ struct usb_hcd *hcd);
+
+extern void usb_hcd_resume_root_hub (struct usb_hcd *hcd);
+
+extern void usb_set_device_state(struct usb_device *udev,
+ enum usb_device_state new_state);
+
+/*-------------------------------------------------------------------------*/
+
+/* exported only within usbcore */
+
+extern struct list_head usb_bus_list;
+extern struct semaphore usb_bus_list_lock;
+extern wait_queue_head_t usb_kill_urb_queue;
+
+extern struct usb_bus *usb_bus_get (struct usb_bus *bus);
+extern void usb_bus_put (struct usb_bus *bus);
+
+extern int usb_find_interface_driver (struct usb_device *dev,
+ struct usb_interface *interface);
+
+#define usb_endpoint_out(ep_dir) (!((ep_dir) & USB_DIR_IN))
+
+/*
+ * USB device fs stuff
+ */
+
+#ifdef CONFIG_USB_DEVICEFS
+
+/*
+ * these are expected to be called from the USB core/hub thread
+ * with the kernel lock held
+ */
+extern void usbfs_add_bus(struct usb_bus *bus);
+extern void usbfs_remove_bus(struct usb_bus *bus);
+extern void usbfs_add_device(struct usb_device *dev);
+extern void usbfs_remove_device(struct usb_device *dev);
+extern void usbfs_update_special (void);
+
+extern int usbfs_init(void);
+extern void usbfs_cleanup(void);
+
+#else /* CONFIG_USB_DEVICEFS */
+
+static inline void usbfs_add_bus(struct usb_bus *bus) {}
+static inline void usbfs_remove_bus(struct usb_bus *bus) {}
+static inline void usbfs_add_device(struct usb_device *dev) {}
+static inline void usbfs_remove_device(struct usb_device *dev) {}
+static inline void usbfs_update_special (void) {}
+
+static inline int usbfs_init(void) { return 0; }
+static inline void usbfs_cleanup(void) { }
+
+#endif /* CONFIG_USB_DEVICEFS */
+
+/*-------------------------------------------------------------------------*/
+
+#if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE)
+
+struct usb_mon_operations {
+ void (*urb_submit)(struct usb_bus *bus, struct urb *urb);
+ void (*urb_submit_error)(struct usb_bus *bus, struct urb *urb, int err);
+ void (*urb_complete)(struct usb_bus *bus, struct urb *urb);
+ /* void (*urb_unlink)(struct usb_bus *bus, struct urb *urb); */
+ void (*bus_add)(struct usb_bus *bus);
+ void (*bus_remove)(struct usb_bus *bus);
+};
+
+extern struct usb_mon_operations *mon_ops;
+
+static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb)
+{
+ if (bus->monitored)
+ (*mon_ops->urb_submit)(bus, urb);
+}
+
+static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb,
+ int error)
+{
+ if (bus->monitored)
+ (*mon_ops->urb_submit_error)(bus, urb, error);
+}
+
+static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb)
+{
+ if (bus->monitored)
+ (*mon_ops->urb_complete)(bus, urb);
+}
+
+static inline void usbmon_notify_bus_add(struct usb_bus *bus)
+{
+ if (mon_ops)
+ (*mon_ops->bus_add)(bus);
+}
+
+static inline void usbmon_notify_bus_remove(struct usb_bus *bus)
+{
+ if (mon_ops)
+ (*mon_ops->bus_remove)(bus);
+}
+
+int usb_mon_register(struct usb_mon_operations *ops);
+void usb_mon_deregister(void);
+
+#else
+
+static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb) {}
+static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb,
+ int error) {}
+static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb) {}
+static inline void usbmon_notify_bus_add(struct usb_bus *bus) {}
+static inline void usbmon_notify_bus_remove(struct usb_bus *bus) {}
+
+#endif /* CONFIG_USB_MON */
+
+/*-------------------------------------------------------------------------*/
+
+/* hub.h ... DeviceRemovable in 2.4.2-ac11, gone in 2.4.10 */
+// bleech -- resurfaced in 2.4.11 or 2.4.12
+#define bitmap DeviceRemovable
+
+
+/*-------------------------------------------------------------------------*/
+
+/* random stuff */
+
+#define RUN_CONTEXT (in_irq () ? "in_irq" \
+ : (in_interrupt () ? "in_interrupt" : "can sleep"))
+
+
+#endif /* __KERNEL__ */
+