Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 238 insertions, 0 deletions

diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h
new file mode 100644
index 000000000000..d114b847d56f
--- /dev/null
+++ b/drivers/usb/core/hub.h
@@ -0,0 +1,238 @@
+#ifndef __LINUX_HUB_H
+#define __LINUX_HUB_H
+
+/*
+ * Hub protocol and driver data structures.
+ *
+ * Some of these are known to the "virtual root hub" code
+ * in host controller drivers.
+ */
+
+#include <linux/list.h>
+#include <linux/workqueue.h>
+#include <linux/compiler.h>	/* likely()/unlikely() */
+
+/*
+ * Hub request types
+ */
+
+#define USB_RT_HUB	(USB_TYPE_CLASS | USB_RECIP_DEVICE)
+#define USB_RT_PORT	(USB_TYPE_CLASS | USB_RECIP_OTHER)
+
+/*
+ * Hub class requests
+ * See USB 2.0 spec Table 11-16
+ */
+#define HUB_CLEAR_TT_BUFFER	8
+#define HUB_RESET_TT		9
+#define HUB_GET_TT_STATE	10
+#define HUB_STOP_TT		11
+
+/*
+ * Hub Class feature numbers
+ * See USB 2.0 spec Table 11-17
+ */
+#define C_HUB_LOCAL_POWER	0
+#define C_HUB_OVER_CURRENT	1
+
+/*
+ * Port feature numbers
+ * See USB 2.0 spec Table 11-17
+ */
+#define USB_PORT_FEAT_CONNECTION	0
+#define USB_PORT_FEAT_ENABLE		1
+#define USB_PORT_FEAT_SUSPEND		2
+#define USB_PORT_FEAT_OVER_CURRENT	3
+#define USB_PORT_FEAT_RESET		4
+#define USB_PORT_FEAT_POWER		8
+#define USB_PORT_FEAT_LOWSPEED		9
+#define USB_PORT_FEAT_HIGHSPEED		10
+#define USB_PORT_FEAT_C_CONNECTION	16
+#define USB_PORT_FEAT_C_ENABLE		17
+#define USB_PORT_FEAT_C_SUSPEND		18
+#define USB_PORT_FEAT_C_OVER_CURRENT	19
+#define USB_PORT_FEAT_C_RESET		20
+#define USB_PORT_FEAT_TEST              21
+#define USB_PORT_FEAT_INDICATOR         22
+
+/* 
+ * Hub Status and Hub Change results
+ * See USB 2.0 spec Table 11-19 and Table 11-20
+ */
+struct usb_port_status {
+	__le16 wPortStatus;
+	__le16 wPortChange;	
+} __attribute__ ((packed));
+
+/* 
+ * wPortStatus bit field
+ * See USB 2.0 spec Table 11-21
+ */
+#define USB_PORT_STAT_CONNECTION	0x0001
+#define USB_PORT_STAT_ENABLE		0x0002
+#define USB_PORT_STAT_SUSPEND		0x0004
+#define USB_PORT_STAT_OVERCURRENT	0x0008
+#define USB_PORT_STAT_RESET		0x0010
+/* bits 5 to 7 are reserved */
+#define USB_PORT_STAT_POWER		0x0100
+#define USB_PORT_STAT_LOW_SPEED		0x0200
+#define USB_PORT_STAT_HIGH_SPEED        0x0400
+#define USB_PORT_STAT_TEST              0x0800
+#define USB_PORT_STAT_INDICATOR         0x1000
+/* bits 13 to 15 are reserved */
+
+/* 
+ * wPortChange bit field
+ * See USB 2.0 spec Table 11-22
+ * Bits 0 to 4 shown, bits 5 to 15 are reserved
+ */
+#define USB_PORT_STAT_C_CONNECTION	0x0001
+#define USB_PORT_STAT_C_ENABLE		0x0002
+#define USB_PORT_STAT_C_SUSPEND		0x0004
+#define USB_PORT_STAT_C_OVERCURRENT	0x0008
+#define USB_PORT_STAT_C_RESET		0x0010
+
+/*
+ * wHubCharacteristics (masks) 
+ * See USB 2.0 spec Table 11-13, offset 3
+ */
+#define HUB_CHAR_LPSM		0x0003 /* D1 .. D0 */
+#define HUB_CHAR_COMPOUND	0x0004 /* D2       */
+#define HUB_CHAR_OCPM		0x0018 /* D4 .. D3 */
+#define HUB_CHAR_TTTT           0x0060 /* D6 .. D5 */
+#define HUB_CHAR_PORTIND        0x0080 /* D7       */
+
+struct usb_hub_status {
+	__le16 wHubStatus;
+	__le16 wHubChange;
+} __attribute__ ((packed));
+
+/*
+ * Hub Status & Hub Change bit masks
+ * See USB 2.0 spec Table 11-19 and Table 11-20
+ * Bits 0 and 1 for wHubStatus and wHubChange
+ * Bits 2 to 15 are reserved for both
+ */
+#define HUB_STATUS_LOCAL_POWER	0x0001
+#define HUB_STATUS_OVERCURRENT	0x0002
+#define HUB_CHANGE_LOCAL_POWER	0x0001
+#define HUB_CHANGE_OVERCURRENT	0x0002
+
+
+/* 
+ * Hub descriptor 
+ * See USB 2.0 spec Table 11-13
+ */
+
+#define USB_DT_HUB			(USB_TYPE_CLASS | 0x09)
+#define USB_DT_HUB_NONVAR_SIZE		7
+
+struct usb_hub_descriptor {
+	__u8  bDescLength;
+	__u8  bDescriptorType;
+	__u8  bNbrPorts;
+	__u16 wHubCharacteristics;
+	__u8  bPwrOn2PwrGood;
+	__u8  bHubContrCurrent;
+	    	/* add 1 bit for hub status change; round to bytes */
+	__u8  DeviceRemovable[(USB_MAXCHILDREN + 1 + 7) / 8];
+	__u8  PortPwrCtrlMask[(USB_MAXCHILDREN + 1 + 7) / 8];
+} __attribute__ ((packed));
+
+
+/* port indicator status selectors, tables 11-7 and 11-25 */
+#define HUB_LED_AUTO	0
+#define HUB_LED_AMBER	1
+#define HUB_LED_GREEN	2
+#define HUB_LED_OFF	3
+
+enum hub_led_mode {
+	INDICATOR_AUTO = 0,
+	INDICATOR_CYCLE,
+	/* software blinks for attention:  software, hardware, reserved */
+	INDICATOR_GREEN_BLINK, INDICATOR_GREEN_BLINK_OFF,
+	INDICATOR_AMBER_BLINK, INDICATOR_AMBER_BLINK_OFF,
+	INDICATOR_ALT_BLINK, INDICATOR_ALT_BLINK_OFF
+} __attribute__ ((packed));
+
+struct usb_device;
+
+/*
+ * As of USB 2.0, full/low speed devices are segregated into trees.
+ * One type grows from USB 1.1 host controllers (OHCI, UHCI etc).
+ * The other type grows from high speed hubs when they connect to
+ * full/low speed devices using "Transaction Translators" (TTs).
+ *
+ * TTs should only be known to the hub driver, and high speed bus
+ * drivers (only EHCI for now).  They affect periodic scheduling and
+ * sometimes control/bulk error recovery.
+ */
+struct usb_tt {
+	struct usb_device	*hub;	/* upstream highspeed hub */
+	int			multi;	/* true means one TT per port */
+
+	/* for control/bulk error recovery (CLEAR_TT_BUFFER) */
+	spinlock_t		lock;
+	struct list_head	clear_list;	/* of usb_tt_clear */
+	struct work_struct			kevent;
+};
+
+struct usb_tt_clear {
+	struct list_head	clear_list;
+	unsigned		tt;
+	u16			devinfo;
+};
+
+extern void usb_hub_tt_clear_buffer (struct usb_device *dev, int pipe);
+
+struct usb_hub {
+	struct device		*intfdev;	/* the "interface" device */
+	struct usb_device	*hdev;
+	struct urb		*urb;		/* for interrupt polling pipe */
+
+	/* buffer for urb ... with extra space in case of babble */
+	char			(*buffer)[8];
+	dma_addr_t		buffer_dma;	/* DMA address for buffer */
+	union {
+		struct usb_hub_status	hub;
+		struct usb_port_status	port;
+	}			*status;	/* buffer for status reports */
+
+	int			error;		/* last reported error */
+	int			nerrors;	/* track consecutive errors */
+
+	struct list_head	event_list;	/* hubs w/data or errs ready */
+	unsigned long		event_bits[1];	/* status change bitmask */
+	unsigned long		change_bits[1];	/* ports with logical connect
+							status change */
+	unsigned long		busy_bits[1];	/* ports being reset */
+#if USB_MAXCHILDREN > 31 /* 8*sizeof(unsigned long) - 1 */
+#error event_bits[] is too short!
+#endif
+
+	struct usb_hub_descriptor *descriptor;	/* class descriptor */
+	struct usb_tt		tt;		/* Transaction Translator */
+
+	u8			power_budget;	/* in 2mA units; or zero */
+
+	unsigned		quiescing:1;
+	unsigned		activating:1;
+	unsigned		resume_root_hub:1;
+
+	unsigned		has_indicators:1;
+	enum hub_led_mode	indicator[USB_MAXCHILDREN];
+	struct work_struct	leds;
+};
+
+/* use this for low-powered root hubs */
+static inline void
+hub_set_power_budget (struct usb_device *hubdev, unsigned mA)
+{
+	struct usb_hub	*hub;
+
+	hub = (struct usb_hub *)
+		usb_get_intfdata (hubdev->actconfig->interface[0]);
+	hub->power_budget = min(mA,(unsigned)500)/2;
+}
+
+#endif /* __LINUX_HUB_H */