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/hub.h b/drivers/usb/core/hub.h
new file mode 100644
index 0000000..d114b84
--- /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 */