| #ifndef __USB_UHCI_H |
| #define __USB_UHCI_H |
| |
| // usb-uhci.c |
| void uhci_init(struct pci_device *pci, int busid); |
| struct usb_pipe; |
| void uhci_free_pipe(struct usb_pipe *p); |
| struct usb_pipe *uhci_alloc_control_pipe(struct usb_pipe *dummy); |
| int uhci_control(struct usb_pipe *p, int dir, const void *cmd, int cmdsize |
| , void *data, int datasize); |
| struct usb_pipe *uhci_alloc_bulk_pipe(struct usb_pipe *dummy); |
| int uhci_send_bulk(struct usb_pipe *p, int dir, void *data, int datasize); |
| struct usb_pipe *uhci_alloc_intr_pipe(struct usb_pipe *dummy, int frameexp); |
| int uhci_poll_intr(struct usb_pipe *p, void *data); |
| |
| |
| /**************************************************************** |
| * uhci structs and flags |
| ****************************************************************/ |
| |
| /* 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_DPLUS 0x0010 /* D+ high (line status) */ |
| #define USBPORTSC_DMINUS 0x0020 /* D- high (line status) */ |
| #define USBPORTSC_RD 0x0040 /* Resume Detect */ |
| #define USBPORTSC_RES1 0x0080 /* reserved, always 1 */ |
| #define USBPORTSC_LSDA 0x0100 /* Low Speed Device Attached */ |
| #define USBPORTSC_PR 0x0200 /* Port Reset */ |
| |
| /* Legacy support register */ |
| #define USBLEGSUP 0xc0 |
| #define USBLEGSUP_RWC 0x8f00 /* the R/WC bits */ |
| |
| /* 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: PCI problems */ |
| #define USBSTS_HCPE 0x0010 /* Host Controller Process Error: |
| * the schedule is 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 |
| #define USBSOF_DEFAULT 64 /* Frame length is exactly 1 ms */ |
| |
| struct uhci_framelist { |
| u32 links[1024]; |
| } PACKED; |
| |
| #define TD_CTRL_SPD (1 << 29) /* Short Packet Detect */ |
| #define TD_CTRL_C_ERR_MASK (3 << 27) /* Error Counter bits */ |
| #define TD_CTRL_C_ERR_SHIFT 27 |
| #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_CRCTIMEO | \ |
| TD_CTRL_BITSTUFF) |
| #define uhci_maxerr(err) ((err) << TD_CTRL_C_ERR_SHIFT) |
| |
| #define TD_TOKEN_DEVADDR_SHIFT 8 |
| #define TD_TOKEN_TOGGLE_SHIFT 19 |
| #define TD_TOKEN_TOGGLE (1 << 19) |
| #define TD_TOKEN_EXPLEN_SHIFT 21 |
| #define TD_TOKEN_EXPLEN_MASK 0x7FF /* expected length, encoded as n-1 */ |
| #define TD_TOKEN_PID_MASK 0xFF |
| |
| #define uhci_explen(len) ((((len) - 1) & TD_TOKEN_EXPLEN_MASK) << \ |
| TD_TOKEN_EXPLEN_SHIFT) |
| |
| #define uhci_expected_length(token) ((((token) >> TD_TOKEN_EXPLEN_SHIFT) + \ |
| 1) & TD_TOKEN_EXPLEN_MASK) |
| |
| struct uhci_td { |
| u32 link; |
| u32 status; |
| u32 token; |
| void *buffer; |
| } PACKED; |
| |
| struct uhci_qh { |
| u32 link; |
| u32 element; |
| } PACKED; |
| |
| #define UHCI_PTR_BITS 0x000F |
| #define UHCI_PTR_TERM 0x0001 |
| #define UHCI_PTR_QH 0x0002 |
| #define UHCI_PTR_DEPTH 0x0004 |
| #define UHCI_PTR_BREADTH 0x0000 |
| |
| #endif // usb-uhci.h |