417 lines
12 KiB
C
417 lines
12 KiB
C
/*
|
|
* URB OHCI HCD (Host Controller Driver) for USB.
|
|
*
|
|
* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
|
|
* (C) Copyright 2000-2001 David Brownell <dbrownell@users.sourceforge.net>
|
|
*
|
|
* usb-ohci.h
|
|
*/
|
|
|
|
|
|
static int cc_to_error[16] = {
|
|
|
|
/* mapping of the OHCI CC status to error codes */
|
|
/* No Error */ 0,
|
|
/* CRC Error */ USB_ST_CRC_ERR,
|
|
/* Bit Stuff */ USB_ST_BIT_ERR,
|
|
/* Data Togg */ USB_ST_CRC_ERR,
|
|
/* Stall */ USB_ST_STALLED,
|
|
/* DevNotResp */ -1,
|
|
/* PIDCheck */ USB_ST_BIT_ERR,
|
|
/* UnExpPID */ USB_ST_BIT_ERR,
|
|
/* DataOver */ USB_ST_BUF_ERR,
|
|
/* DataUnder */ USB_ST_BUF_ERR,
|
|
/* reservd */ -1,
|
|
/* reservd */ -1,
|
|
/* BufferOver */ USB_ST_BUF_ERR,
|
|
/* BuffUnder */ USB_ST_BUF_ERR,
|
|
/* Not Access */ -1,
|
|
/* Not Access */ -1
|
|
};
|
|
|
|
/* ED States */
|
|
|
|
#define ED_NEW 0x00
|
|
#define ED_UNLINK 0x01
|
|
#define ED_OPER 0x02
|
|
#define ED_DEL 0x04
|
|
#define ED_URB_DEL 0x08
|
|
|
|
/* usb_ohci_ed */
|
|
struct ed {
|
|
__u32 hwINFO;
|
|
__u32 hwTailP;
|
|
__u32 hwHeadP;
|
|
__u32 hwNextED;
|
|
|
|
struct ed *ed_prev;
|
|
__u8 int_period;
|
|
__u8 int_branch;
|
|
__u8 int_load;
|
|
__u8 int_interval;
|
|
__u8 state;
|
|
__u8 type;
|
|
__u16 last_iso;
|
|
struct ed *ed_rm_list;
|
|
|
|
struct usb_device *usb_dev;
|
|
__u32 unused[3];
|
|
} __attribute((aligned(16)));
|
|
typedef struct ed ed_t;
|
|
|
|
|
|
/* TD info field */
|
|
#define TD_CC 0xf0000000
|
|
#define TD_CC_GET(td_p) ((td_p >>28) & 0x0f)
|
|
#define TD_CC_SET(td_p, cc) (td_p) = ((td_p) & 0x0fffffff) | (((cc) & 0x0f) << 28)
|
|
#define TD_EC 0x0C000000
|
|
#define TD_T 0x03000000
|
|
#define TD_T_DATA0 0x02000000
|
|
#define TD_T_DATA1 0x03000000
|
|
#define TD_T_TOGGLE 0x00000000
|
|
#define TD_R 0x00040000
|
|
#define TD_DI 0x00E00000
|
|
#define TD_DI_SET(X) (((X) & 0x07)<< 21)
|
|
#define TD_DP 0x00180000
|
|
#define TD_DP_SETUP 0x00000000
|
|
#define TD_DP_IN 0x00100000
|
|
#define TD_DP_OUT 0x00080000
|
|
|
|
#define TD_ISO 0x00010000
|
|
#define TD_DEL 0x00020000
|
|
|
|
/* CC Codes */
|
|
#define TD_CC_NOERROR 0x00
|
|
#define TD_CC_CRC 0x01
|
|
#define TD_CC_BITSTUFFING 0x02
|
|
#define TD_CC_DATATOGGLEM 0x03
|
|
#define TD_CC_STALL 0x04
|
|
#define TD_DEVNOTRESP 0x05
|
|
#define TD_PIDCHECKFAIL 0x06
|
|
#define TD_UNEXPECTEDPID 0x07
|
|
#define TD_DATAOVERRUN 0x08
|
|
#define TD_DATAUNDERRUN 0x09
|
|
#define TD_BUFFEROVERRUN 0x0C
|
|
#define TD_BUFFERUNDERRUN 0x0D
|
|
#define TD_NOTACCESSED 0x0F
|
|
|
|
|
|
#define MAXPSW 1
|
|
|
|
struct td {
|
|
__u32 hwINFO;
|
|
__u32 hwCBP; /* Current Buffer Pointer */
|
|
__u32 hwNextTD; /* Next TD Pointer */
|
|
__u32 hwBE; /* Memory Buffer End Pointer */
|
|
|
|
__u16 hwPSW[MAXPSW];
|
|
__u8 unused;
|
|
__u8 index;
|
|
struct ed *ed;
|
|
struct td *next_dl_td;
|
|
struct usb_device *usb_dev;
|
|
int transfer_len;
|
|
__u32 data;
|
|
|
|
__u32 unused2[2];
|
|
} __attribute((aligned(32)));
|
|
typedef struct td td_t;
|
|
|
|
#define OHCI_ED_SKIP (1 << 14)
|
|
|
|
/*
|
|
* The HCCA (Host Controller Communications Area) is a 256 byte
|
|
* structure defined in the OHCI spec. that the host controller is
|
|
* told the base address of. It must be 256-byte aligned.
|
|
*/
|
|
|
|
#define NUM_INTS 32 /* part of the OHCI standard */
|
|
struct ohci_hcca {
|
|
__u32 int_table[NUM_INTS]; /* Interrupt ED table */
|
|
__u16 frame_no; /* current frame number */
|
|
__u16 pad1; /* set to 0 on each frame_no change */
|
|
__u32 done_head; /* info returned for an interrupt */
|
|
u8 reserved_for_hc[116];
|
|
} __attribute((aligned(256)));
|
|
|
|
|
|
/*
|
|
* Maximum number of root hub ports.
|
|
*/
|
|
#define MAX_ROOT_PORTS 15 /* maximum OHCI root hub ports */
|
|
|
|
/*
|
|
* This is the structure of the OHCI controller's memory mapped I/O
|
|
* region. This is Memory Mapped I/O. You must use the readl() and
|
|
* writel() macros defined in asm/io.h to access these!!
|
|
*/
|
|
struct ohci_regs {
|
|
/* control and status registers */
|
|
__u32 revision;
|
|
__u32 control;
|
|
__u32 cmdstatus;
|
|
__u32 intrstatus;
|
|
__u32 intrenable;
|
|
__u32 intrdisable;
|
|
/* memory pointers */
|
|
__u32 hcca;
|
|
__u32 ed_periodcurrent;
|
|
__u32 ed_controlhead;
|
|
__u32 ed_controlcurrent;
|
|
__u32 ed_bulkhead;
|
|
__u32 ed_bulkcurrent;
|
|
__u32 donehead;
|
|
/* frame counters */
|
|
__u32 fminterval;
|
|
__u32 fmremaining;
|
|
__u32 fmnumber;
|
|
__u32 periodicstart;
|
|
__u32 lsthresh;
|
|
/* Root hub ports */
|
|
struct ohci_roothub_regs {
|
|
__u32 a;
|
|
__u32 b;
|
|
__u32 status;
|
|
__u32 portstatus[MAX_ROOT_PORTS];
|
|
} roothub;
|
|
} __attribute((aligned(32)));
|
|
|
|
|
|
/* OHCI CONTROL AND STATUS REGISTER MASKS */
|
|
|
|
/*
|
|
* HcControl (control) register masks
|
|
*/
|
|
#define OHCI_CTRL_CBSR (3 << 0) /* control/bulk service ratio */
|
|
#define OHCI_CTRL_PLE (1 << 2) /* periodic list enable */
|
|
#define OHCI_CTRL_IE (1 << 3) /* isochronous enable */
|
|
#define OHCI_CTRL_CLE (1 << 4) /* control list enable */
|
|
#define OHCI_CTRL_BLE (1 << 5) /* bulk list enable */
|
|
#define OHCI_CTRL_HCFS (3 << 6) /* host controller functional state */
|
|
#define OHCI_CTRL_IR (1 << 8) /* interrupt routing */
|
|
#define OHCI_CTRL_RWC (1 << 9) /* remote wakeup connected */
|
|
#define OHCI_CTRL_RWE (1 << 10) /* remote wakeup enable */
|
|
|
|
/* pre-shifted values for HCFS */
|
|
# define OHCI_USB_RESET (0 << 6)
|
|
# define OHCI_USB_RESUME (1 << 6)
|
|
# define OHCI_USB_OPER (2 << 6)
|
|
# define OHCI_USB_SUSPEND (3 << 6)
|
|
|
|
/*
|
|
* HcCommandStatus (cmdstatus) register masks
|
|
*/
|
|
#define OHCI_HCR (1 << 0) /* host controller reset */
|
|
#define OHCI_CLF (1 << 1) /* control list filled */
|
|
#define OHCI_BLF (1 << 2) /* bulk list filled */
|
|
#define OHCI_OCR (1 << 3) /* ownership change request */
|
|
#define OHCI_SOC (3 << 16) /* scheduling overrun count */
|
|
|
|
/*
|
|
* masks used with interrupt registers:
|
|
* HcInterruptStatus (intrstatus)
|
|
* HcInterruptEnable (intrenable)
|
|
* HcInterruptDisable (intrdisable)
|
|
*/
|
|
#define OHCI_INTR_SO (1 << 0) /* scheduling overrun */
|
|
#define OHCI_INTR_WDH (1 << 1) /* writeback of done_head */
|
|
#define OHCI_INTR_SF (1 << 2) /* start frame */
|
|
#define OHCI_INTR_RD (1 << 3) /* resume detect */
|
|
#define OHCI_INTR_UE (1 << 4) /* unrecoverable error */
|
|
#define OHCI_INTR_FNO (1 << 5) /* frame number overflow */
|
|
#define OHCI_INTR_RHSC (1 << 6) /* root hub status change */
|
|
#define OHCI_INTR_OC (1 << 30) /* ownership change */
|
|
#define OHCI_INTR_MIE (1 << 31) /* master interrupt enable */
|
|
|
|
|
|
/* Virtual Root HUB */
|
|
struct virt_root_hub {
|
|
int devnum; /* Address of Root Hub endpoint */
|
|
void *dev; /* was urb */
|
|
void *int_addr;
|
|
int send;
|
|
int interval;
|
|
};
|
|
|
|
/* USB HUB CONSTANTS (not OHCI-specific; see hub.h) */
|
|
|
|
/* 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
|
|
|
|
#define RH_ACK 0x01
|
|
#define RH_REQ_ERR -1
|
|
#define RH_NACK 0x00
|
|
|
|
|
|
/* OHCI ROOT HUB REGISTER MASKS */
|
|
|
|
/* roothub.portstatus [i] bits */
|
|
#define RH_PS_CCS 0x00000001 /* current connect status */
|
|
#define RH_PS_PES 0x00000002 /* port enable status*/
|
|
#define RH_PS_PSS 0x00000004 /* port suspend status */
|
|
#define RH_PS_POCI 0x00000008 /* port over current indicator */
|
|
#define RH_PS_PRS 0x00000010 /* port reset status */
|
|
#define RH_PS_PPS 0x00000100 /* port power status */
|
|
#define RH_PS_LSDA 0x00000200 /* low speed device attached */
|
|
#define RH_PS_CSC 0x00010000 /* connect status change */
|
|
#define RH_PS_PESC 0x00020000 /* port enable status change */
|
|
#define RH_PS_PSSC 0x00040000 /* port suspend status change */
|
|
#define RH_PS_OCIC 0x00080000 /* over current indicator change */
|
|
#define RH_PS_PRSC 0x00100000 /* port reset status change */
|
|
|
|
/* roothub.status bits */
|
|
#define RH_HS_LPS 0x00000001 /* local power status */
|
|
#define RH_HS_OCI 0x00000002 /* over current indicator */
|
|
#define RH_HS_DRWE 0x00008000 /* device remote wakeup enable */
|
|
#define RH_HS_LPSC 0x00010000 /* local power status change */
|
|
#define RH_HS_OCIC 0x00020000 /* over current indicator change */
|
|
#define RH_HS_CRWE 0x80000000 /* clear remote wakeup enable */
|
|
|
|
/* roothub.b masks */
|
|
#define RH_B_DR 0x0000ffff /* device removable flags */
|
|
#define RH_B_PPCM 0xffff0000 /* port power control mask */
|
|
|
|
/* roothub.a masks */
|
|
#define RH_A_NDP (0xff << 0) /* number of downstream ports */
|
|
#define RH_A_PSM (1 << 8) /* power switching mode */
|
|
#define RH_A_NPS (1 << 9) /* no power switching */
|
|
#define RH_A_DT (1 << 10) /* device type (mbz) */
|
|
#define RH_A_OCPM (1 << 11) /* over current protection mode */
|
|
#define RH_A_NOCP (1 << 12) /* no over current protection */
|
|
#define RH_A_POTPGT (0xff << 24) /* power on to power good time */
|
|
|
|
/* urb */
|
|
#define N_URB_TD 48
|
|
typedef struct
|
|
{
|
|
ed_t *ed;
|
|
__u16 length; /* number of tds associated with this request */
|
|
__u16 td_cnt; /* number of tds already serviced */
|
|
int state;
|
|
unsigned long pipe;
|
|
int actual_length;
|
|
td_t *td[N_URB_TD]; /* list pointer to all corresponding TDs associated with this request */
|
|
} urb_priv_t;
|
|
#define URB_DEL 1
|
|
|
|
/*
|
|
* This is the full ohci controller description
|
|
*
|
|
* Note how the "proper" USB information is just
|
|
* a subset of what the full implementation needs. (Linus)
|
|
*/
|
|
|
|
|
|
typedef struct ohci {
|
|
struct ohci_hcca *hcca; /* hcca */
|
|
/*dma_addr_t hcca_dma;*/
|
|
|
|
int irq;
|
|
int disabled; /* e.g. got a UE, we're hung */
|
|
int sleeping;
|
|
unsigned long flags; /* for HC bugs */
|
|
|
|
struct ohci_regs *regs; /* OHCI controller's memory */
|
|
|
|
ed_t *ed_rm_list[2]; /* lists of all endpoints to be removed */
|
|
ed_t *ed_bulktail; /* last endpoint of bulk list */
|
|
ed_t *ed_controltail; /* last endpoint of control list */
|
|
int intrstatus;
|
|
__u32 hc_control; /* copy of the hc control reg */
|
|
struct usb_device *dev[32];
|
|
struct virt_root_hub rh;
|
|
|
|
const char *slot_name;
|
|
} ohci_t;
|
|
|
|
#define NUM_EDS 8 /* num of preallocated endpoint descriptors */
|
|
|
|
struct ohci_device {
|
|
ed_t ed[NUM_EDS];
|
|
int ed_cnt;
|
|
};
|
|
|
|
/* hcd */
|
|
/* endpoint */
|
|
static int ep_link(ohci_t * ohci, ed_t * ed);
|
|
static int ep_unlink(ohci_t * ohci, ed_t * ed);
|
|
static ed_t * ep_add_ed(struct usb_device * usb_dev, unsigned long pipe);
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
/* we need more TDs than EDs */
|
|
#define NUM_TD 64
|
|
|
|
/* +1 so we can align the storage */
|
|
td_t gtd[NUM_TD+1];
|
|
/* pointers to aligned storage */
|
|
td_t *ptd;
|
|
|
|
/* TDs ... */
|
|
static inline struct td *
|
|
td_alloc (struct usb_device *usb_dev)
|
|
{
|
|
int i;
|
|
struct td *td;
|
|
|
|
td = NULL;
|
|
for (i = 0; i < NUM_TD; i++) {
|
|
if (ptd[i].usb_dev == NULL) {
|
|
td = &ptd[i];
|
|
td->usb_dev = usb_dev;
|
|
break;
|
|
}
|
|
}
|
|
return td;
|
|
}
|
|
|
|
static inline void
|
|
ed_free (struct ed *ed)
|
|
{
|
|
ed->usb_dev = NULL;
|
|
}
|