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#ifndef __LINUX_UHCI_H
#define __LINUX_UHCI_H
/*
$Id: usb-uhci.h,v 1.55 2000/05/13 12:50:30 acher Exp $
*/
#define MODNAME "usb-uhci"
#define UHCI_LATENCY_TIMER 0
static __inline__ void uhci_wait_ms(unsigned int ms)
{
if(!in_interrupt())
{
current->state = TASK_UNINTERRUPTIBLE;
schedule_timeout(1 + ms * HZ / 1000);
}
else
mdelay(ms);
}
/* Command register */
#define USBCMD 0
#define USBCMD_RS 0x0001 /* Run/Stop */
#define USBCMD_HCRESET 0x0002 /* Host reset */
#define USBCMD_GRESET 0x0004 /* Global reset */
#define USBCMD_EGSM 0x0008 /* Global Suspend Mode */
#define USBCMD_FGR 0x0010 /* Force Global Resume */
#define USBCMD_SWDBG 0x0020 /* SW Debug mode */
#define USBCMD_CF 0x0040 /* Config Flag (sw only) */
#define USBCMD_MAXP 0x0080 /* Max Packet (0 = 32, 1 = 64) */
/* Status register */
#define USBSTS 2
#define USBSTS_USBINT 0x0001 /* Interrupt due to IOC */
#define USBSTS_ERROR 0x0002 /* Interrupt due to error */
#define USBSTS_RD 0x0004 /* Resume Detect */
#define USBSTS_HSE 0x0008 /* Host System Error - basically PCI problems */
#define USBSTS_HCPE 0x0010 /* Host Controller Process Error - the scripts were buggy */
#define USBSTS_HCH 0x0020 /* HC Halted */
/* Interrupt enable register */
#define USBINTR 4
#define USBINTR_TIMEOUT 0x0001 /* Timeout/CRC error enable */
#define USBINTR_RESUME 0x0002 /* Resume interrupt enable */
#define USBINTR_IOC 0x0004 /* Interrupt On Complete enable */
#define USBINTR_SP 0x0008 /* Short packet interrupt enable */
#define USBFRNUM 6
#define USBFLBASEADD 8
#define USBSOF 12
/* USB port status and control registers */
#define USBPORTSC1 16
#define USBPORTSC2 18
#define USBPORTSC_CCS 0x0001 /* Current Connect Status ("device present") */
#define USBPORTSC_CSC 0x0002 /* Connect Status Change */
#define USBPORTSC_PE 0x0004 /* Port Enable */
#define USBPORTSC_PEC 0x0008 /* Port Enable Change */
#define USBPORTSC_LS 0x0030 /* Line Status */
#define USBPORTSC_RD 0x0040 /* Resume Detect */
#define USBPORTSC_LSDA 0x0100 /* Low Speed Device Attached */
#define USBPORTSC_PR 0x0200 /* Port Reset */
#define USBPORTSC_SUSP 0x1000 /* Suspend */
/* Legacy support register */
#define USBLEGSUP 0xc0
#define USBLEGSUP_DEFAULT 0x2000 /* only PIRQ enable set */
#define UHCI_NULL_DATA_SIZE 0x7ff /* for UHCI controller TD */
#define UHCI_PID 0xff /* PID MASK */
#define UHCI_PTR_BITS 0x000F
#define UHCI_PTR_TERM 0x0001
#define UHCI_PTR_QH 0x0002
#define UHCI_PTR_DEPTH 0x0004
#define UHCI_NUMFRAMES 1024 /* in the frame list [array] */
#define UHCI_MAX_SOF_NUMBER 2047 /* in an SOF packet */
#define CAN_SCHEDULE_FRAMES 1000 /* how far future frames can be scheduled */
/*
* for TD <status>:
*/
#define TD_CTRL_SPD (1 << 29) /* Short Packet Detect */
#define TD_CTRL_C_ERR_MASK (3 << 27) /* Error Counter bits */
#define TD_CTRL_LS (1 << 26) /* Low Speed Device */
#define TD_CTRL_IOS (1 << 25) /* Isochronous Select */
#define TD_CTRL_IOC (1 << 24) /* Interrupt on Complete */
#define TD_CTRL_ACTIVE (1 << 23) /* TD Active */
#define TD_CTRL_STALLED (1 << 22) /* TD Stalled */
#define TD_CTRL_DBUFERR (1 << 21) /* Data Buffer Error */
#define TD_CTRL_BABBLE (1 << 20) /* Babble Detected */
#define TD_CTRL_NAK (1 << 19) /* NAK Received */
#define TD_CTRL_CRCTIMEO (1 << 18) /* CRC/Time Out Error */
#define TD_CTRL_BITSTUFF (1 << 17) /* Bit Stuff Error */
#define TD_CTRL_ACTLEN_MASK 0x7ff /* actual length, encoded as n - 1 */
#define TD_CTRL_ANY_ERROR (TD_CTRL_STALLED | TD_CTRL_DBUFERR | \
TD_CTRL_BABBLE | TD_CTRL_CRCTIME | TD_CTRL_BITSTUFF)
#define uhci_status_bits(ctrl_sts) (ctrl_sts & 0xFE0000)
#define uhci_actual_length(ctrl_sts) ((ctrl_sts + 1) & TD_CTRL_ACTLEN_MASK) /* 1-based */
#define uhci_ptr_to_virt(x) bus_to_virt(x & ~UHCI_PTR_BITS)
/*
* for TD <flags>:
*/
#define UHCI_TD_REMOVE 0x0001 /* Remove when done */
/*
* for TD <info>: (a.k.a. Token)
*/
#define TD_TOKEN_TOGGLE 19
#define uhci_maxlen(token) ((token) >> 21)
#define uhci_toggle(token) (((token) >> TD_TOKEN_TOGGLE) & 1)
#define uhci_endpoint(token) (((token) >> 15) & 0xf)
#define uhci_devaddr(token) (((token) >> 8) & 0x7f)
#define uhci_devep(token) (((token) >> 8) & 0x7ff)
#define uhci_packetid(token) ((token) & 0xff)
#define uhci_packetout(token) (uhci_packetid(token) != USB_PID_IN)
#define uhci_packetin(token) (uhci_packetid(token) == USB_PID_IN)
/* ------------------------------------------------------------------------------------
New TD/QH-structures
------------------------------------------------------------------------------------ */
typedef enum {
TD_TYPE, QH_TYPE
} uhci_desc_type_t;
typedef struct {
__u32 link;
__u32 status;
__u32 info;
__u32 buffer;
} uhci_td_t, *puhci_td_t;
typedef struct {
__u32 head;
__u32 element; /* Queue element pointer */
} uhci_qh_t, *puhci_qh_t;
typedef struct {
union {
uhci_td_t td;
uhci_qh_t qh;
} hw;
uhci_desc_type_t type;
struct list_head horizontal;
struct list_head vertical;
struct list_head desc_list;
int last_used;
} uhci_desc_t, *puhci_desc_t;
typedef struct {
struct list_head desc_list; // list pointer to all corresponding TDs/QHs associated with this request
unsigned long started;
urb_t *next_queued_urb; // next queued urb for this EP
urb_t *prev_queued_urb;
uhci_desc_t *bottom_qh;
uhci_desc_t *next_qh; // next helper QH
char use_loop;
char flags;
} urb_priv_t, *purb_priv_t;
struct virt_root_hub {
int devnum; /* Address of Root Hub endpoint */
void *urb;
void *int_addr;
int send;
int interval;
int numports;
int c_p_r[8];
struct timer_list rh_int_timer;
};
typedef struct uhci {
int irq;
unsigned int io_addr;
unsigned int io_size;
unsigned int maxports;
int running;
int apm_state;
struct uhci *next; // chain of uhci device contexts
struct list_head urb_list; // list of all pending urbs
spinlock_t urb_list_lock; // lock to keep consistency
int unlink_urb_done;
atomic_t avoid_bulk;
struct usb_bus *bus; // our bus
__u32 *framelist;
uhci_desc_t **iso_td;
uhci_desc_t *int_chain[8];
uhci_desc_t *ls_control_chain;
uhci_desc_t *control_chain;
uhci_desc_t *bulk_chain;
uhci_desc_t *chain_end;
uhci_desc_t *td1ms;
uhci_desc_t *td32ms;
struct list_head free_desc;
spinlock_t qh_lock;
spinlock_t td_lock;
struct virt_root_hub rh; //private data of the virtual root hub
int loop_usage; // URBs using bandwidth reclamation
struct list_head urb_unlinked; // list of all unlinked urbs
long timeout_check;
int timeout_urbs;
struct pci_dev *uhci_pci;
} uhci_t, *puhci_t;
#define MAKE_TD_ADDR(a) (virt_to_bus(a)&~UHCI_PTR_QH)
#define MAKE_QH_ADDR(a) (virt_to_bus(a)|UHCI_PTR_QH)
#define UHCI_GET_CURRENT_FRAME(uhci) (inw ((uhci)->io_addr + USBFRNUM))
/* ------------------------------------------------------------------------------------
Virtual Root HUB
------------------------------------------------------------------------------------ */
/* destination of request */
#define RH_INTERFACE 0x01
#define RH_ENDPOINT 0x02
#define RH_OTHER 0x03
#define RH_CLASS 0x20
#define RH_VENDOR 0x40
/* Requests: bRequest << 8 | bmRequestType */
#define RH_GET_STATUS 0x0080
#define RH_CLEAR_FEATURE 0x0100
#define RH_SET_FEATURE 0x0300
#define RH_SET_ADDRESS 0x0500
#define RH_GET_DESCRIPTOR 0x0680
#define RH_SET_DESCRIPTOR 0x0700
#define RH_GET_CONFIGURATION 0x0880
#define RH_SET_CONFIGURATION 0x0900
#define RH_GET_STATE 0x0280
#define RH_GET_INTERFACE 0x0A80
#define RH_SET_INTERFACE 0x0B00
#define RH_SYNC_FRAME 0x0C80
/* Our Vendor Specific Request */
#define RH_SET_EP 0x2000
/* Hub port features */
#define RH_PORT_CONNECTION 0x00
#define RH_PORT_ENABLE 0x01
#define RH_PORT_SUSPEND 0x02
#define RH_PORT_OVER_CURRENT 0x03
#define RH_PORT_RESET 0x04
#define RH_PORT_POWER 0x08
#define RH_PORT_LOW_SPEED 0x09
#define RH_C_PORT_CONNECTION 0x10
#define RH_C_PORT_ENABLE 0x11
#define RH_C_PORT_SUSPEND 0x12
#define RH_C_PORT_OVER_CURRENT 0x13
#define RH_C_PORT_RESET 0x14
/* Hub features */
#define RH_C_HUB_LOCAL_POWER 0x00
#define RH_C_HUB_OVER_CURRENT 0x01
#define RH_DEVICE_REMOTE_WAKEUP 0x00
#define RH_ENDPOINT_STALL 0x01
/* Our Vendor Specific feature */
#define RH_REMOVE_EP 0x00
#define RH_ACK 0x01
#define RH_REQ_ERR -1
#define RH_NACK 0x00
#define min(a,b) (((a)<(b))?(a):(b))
#endif
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