/* SPDX-License-Identifier: GPL-2.0 */
/*
 * ISP116x register declarations and HCD data structures
 *
 * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee>
 * Portions:
 * Copyright (C) 2004 Lothar Wassmann
 * Copyright (C) 2004 Psion Teklogix
 * Copyright (C) 2004 David Brownell
 */

/* us of 1ms frame */
#define  MAX_LOAD_LIMIT         850

/* Full speed: max # of bytes to transfer for a single urb
   at a time must be < 1024 && must be multiple of 64.
   832 allows transferring 4kiB within 5 frames. */
#define MAX_TRANSFER_SIZE_FULLSPEED     832

/* Low speed: there is no reason to schedule in very big
   chunks; often the requested long transfers are for
   string descriptors containing short strings. */
#define MAX_TRANSFER_SIZE_LOWSPEED      64

/* Bytetime (us), a rough indication of how much time it
   would take to transfer a byte of useful data over USB */
#define BYTE_TIME_FULLSPEED     1
#define BYTE_TIME_LOWSPEED      20

/* Buffer sizes */
#define ISP116x_BUF_SIZE        4096
#define ISP116x_ITL_BUFSIZE     0
#define ISP116x_ATL_BUFSIZE     ((ISP116x_BUF_SIZE) - 2*(ISP116x_ITL_BUFSIZE))

#define ISP116x_WRITE_OFFSET    0x80

/*------------ ISP116x registers/bits ------------*/
#define HCREVISION      0x00
#define HCCONTROL       0x01
#define         HCCONTROL_HCFS  (3 << 6)        /* host controller
                                                   functional state */
#define         HCCONTROL_USB_RESET     (0 << 6)
#define         HCCONTROL_USB_RESUME    (1 << 6)
#define         HCCONTROL_USB_OPER      (2 << 6)
#define         HCCONTROL_USB_SUSPEND   (3 << 6)
#define         HCCONTROL_RWC   (1 << 9)        /* remote wakeup connected */
#define         HCCONTROL_RWE   (1 << 10)       /* remote wakeup enable */
#define HCCMDSTAT       0x02
#define         HCCMDSTAT_HCR   (1 << 0)        /* host controller reset */
#define         HCCMDSTAT_SOC   (3 << 16)       /* scheduling overrun count */
#define HCINTSTAT       0x03
#define         HCINT_SO        (1 << 0)        /* scheduling overrun */
#define         HCINT_WDH       (1 << 1)        /* writeback of done_head */
#define         HCINT_SF        (1 << 2)        /* start frame */
#define         HCINT_RD        (1 << 3)        /* resume detect */
#define         HCINT_UE        (1 << 4)        /* unrecoverable error */
#define         HCINT_FNO       (1 << 5)        /* frame number overflow */
#define         HCINT_RHSC      (1 << 6)        /* root hub status change */
#define         HCINT_OC        (1 << 30)       /* ownership change */
#define         HCINT_MIE       (1 << 31)       /* master interrupt enable */
#define HCINTENB        0x04
#define HCINTDIS        0x05
#define HCFMINTVL       0x0d
#define HCFMREM         0x0e
#define HCFMNUM         0x0f
#define HCLSTHRESH      0x11
#define HCRHDESCA       0x12
#define         RH_A_NDP        (0x3 << 0)      /* # 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)       /* overcurrent protection
                                                   mode */
#define         RH_A_NOCP       (1 << 12)       /* no overcurrent protection */
#define         RH_A_POTPGT     (0xff << 24)    /* power on -> power good
                                                   time */
#define HCRHDESCB       0x13
#define         RH_B_DR         (0xffff << 0)   /* device removable flags */
#define         RH_B_PPCM       (0xffff << 16)  /* port power control mask */
#define HCRHSTATUS      0x14
#define         RH_HS_LPS       (1 << 0)        /* local power status */
#define         RH_HS_OCI       (1 << 1)        /* over current indicator */
#define         RH_HS_DRWE      (1 << 15)       /* device remote wakeup
                                                   enable */
#define         RH_HS_LPSC      (1 << 16)       /* local power status change */
#define         RH_HS_OCIC      (1 << 17)       /* over current indicator
                                                   change */
#define         RH_HS_CRWE      (1 << 31)       /* clear remote wakeup
                                                   enable */
#define HCRHPORT1       0x15
#define         RH_PS_CCS       (1 << 0)        /* current connect status */
#define         RH_PS_PES       (1 << 1)        /* port enable status */
#define         RH_PS_PSS       (1 << 2)        /* port suspend status */
#define         RH_PS_POCI      (1 << 3)        /* port over current
                                                   indicator */
#define         RH_PS_PRS       (1 << 4)        /* port reset status */
#define         RH_PS_PPS       (1 << 8)        /* port power status */
#define         RH_PS_LSDA      (1 << 9)        /* low speed device attached */
#define         RH_PS_CSC       (1 << 16)       /* connect status change */
#define         RH_PS_PESC      (1 << 17)       /* port enable status change */
#define         RH_PS_PSSC      (1 << 18)       /* port suspend status
                                                   change */
#define         RH_PS_OCIC      (1 << 19)       /* over current indicator
                                                   change */
#define         RH_PS_PRSC      (1 << 20)       /* port reset status change */
#define         HCRHPORT_CLRMASK        (0x1f << 16)
#define HCRHPORT2       0x16
#define HCHWCFG         0x20
#define         HCHWCFG_15KRSEL         (1 << 12)
#define         HCHWCFG_CLKNOTSTOP      (1 << 11)
#define         HCHWCFG_ANALOG_OC       (1 << 10)
#define         HCHWCFG_DACK_MODE       (1 << 8)
#define         HCHWCFG_EOT_POL         (1 << 7)
#define         HCHWCFG_DACK_POL        (1 << 6)
#define         HCHWCFG_DREQ_POL        (1 << 5)
#define         HCHWCFG_DBWIDTH_MASK    (0x03 << 3)
#define         HCHWCFG_DBWIDTH(n)      (((n) << 3) & HCHWCFG_DBWIDTH_MASK)
#define         HCHWCFG_INT_POL         (1 << 2)
#define         HCHWCFG_INT_TRIGGER     (1 << 1)
#define         HCHWCFG_INT_ENABLE      (1 << 0)
#define HCDMACFG        0x21
#define         HCDMACFG_BURST_LEN_MASK (0x03 << 5)
#define         HCDMACFG_BURST_LEN(n)   (((n) << 5) & HCDMACFG_BURST_LEN_MASK)
#define         HCDMACFG_BURST_LEN_1    HCDMACFG_BURST_LEN(0)
#define         HCDMACFG_BURST_LEN_4    HCDMACFG_BURST_LEN(1)
#define         HCDMACFG_BURST_LEN_8    HCDMACFG_BURST_LEN(2)
#define         HCDMACFG_DMA_ENABLE     (1 << 4)
#define         HCDMACFG_BUF_TYPE_MASK  (0x07 << 1)
#define         HCDMACFG_CTR_SEL        (1 << 2)
#define         HCDMACFG_ITLATL_SEL     (1 << 1)
#define         HCDMACFG_DMA_RW_SELECT  (1 << 0)
#define HCXFERCTR       0x22
#define HCuPINT         0x24
#define         HCuPINT_SOF             (1 << 0)
#define         HCuPINT_ATL             (1 << 1)
#define         HCuPINT_AIIEOT          (1 << 2)
#define         HCuPINT_OPR             (1 << 4)
#define         HCuPINT_SUSP            (1 << 5)
#define         HCuPINT_CLKRDY          (1 << 6)
#define HCuPINTENB      0x25
#define HCCHIPID        0x27
#define         HCCHIPID_MASK           0xff00
#define         HCCHIPID_MAGIC          0x6100
#define HCSCRATCH       0x28
#define HCSWRES         0x29
#define         HCSWRES_MAGIC           0x00f6
#define HCITLBUFLEN     0x2a
#define HCATLBUFLEN     0x2b
#define HCBUFSTAT       0x2c
#define         HCBUFSTAT_ITL0_FULL     (1 << 0)
#define         HCBUFSTAT_ITL1_FULL     (1 << 1)
#define         HCBUFSTAT_ATL_FULL      (1 << 2)
#define         HCBUFSTAT_ITL0_DONE     (1 << 3)
#define         HCBUFSTAT_ITL1_DONE     (1 << 4)
#define         HCBUFSTAT_ATL_DONE      (1 << 5)
#define HCRDITL0LEN     0x2d
#define HCRDITL1LEN     0x2e
#define HCITLPORT       0x40
#define HCATLPORT       0x41

/* Philips transfer descriptor */
struct ptd {
        u16 count;
#define PTD_COUNT_MSK   (0x3ff << 0)
#define PTD_TOGGLE_MSK  (1 << 10)
#define PTD_ACTIVE_MSK  (1 << 11)
#define PTD_CC_MSK      (0xf << 12)
        u16 mps;
#define PTD_MPS_MSK     (0x3ff << 0)
#define PTD_SPD_MSK     (1 << 10)
#define PTD_LAST_MSK    (1 << 11)
#define PTD_EP_MSK      (0xf << 12)
        u16 len;
#define PTD_LEN_MSK     (0x3ff << 0)
#define PTD_DIR_MSK     (3 << 10)
#define PTD_DIR_SETUP   (0)
#define PTD_DIR_OUT     (1)
#define PTD_DIR_IN      (2)
#define PTD_B5_5_MSK    (1 << 13)
        u16 faddr;
#define PTD_FA_MSK      (0x7f << 0)
#define PTD_FMT_MSK     (1 << 7)
} __attribute__ ((packed, aligned(2)));

/* PTD accessor macros. */
#define PTD_GET_COUNT(p)        (((p)->count & PTD_COUNT_MSK) >> 0)
#define PTD_COUNT(v)            (((v) << 0) & PTD_COUNT_MSK)
#define PTD_GET_TOGGLE(p)       (((p)->count & PTD_TOGGLE_MSK) >> 10)
#define PTD_TOGGLE(v)           (((v) << 10) & PTD_TOGGLE_MSK)
#define PTD_GET_ACTIVE(p)       (((p)->count & PTD_ACTIVE_MSK) >> 11)
#define PTD_ACTIVE(v)           (((v) << 11) & PTD_ACTIVE_MSK)
#define PTD_GET_CC(p)           (((p)->count & PTD_CC_MSK) >> 12)
#define PTD_CC(v)               (((v) << 12) & PTD_CC_MSK)
#define PTD_GET_MPS(p)          (((p)->mps & PTD_MPS_MSK) >> 0)
#define PTD_MPS(v)              (((v) << 0) & PTD_MPS_MSK)
#define PTD_GET_SPD(p)          (((p)->mps & PTD_SPD_MSK) >> 10)
#define PTD_SPD(v)              (((v) << 10) & PTD_SPD_MSK)
#define PTD_GET_LAST(p)         (((p)->mps & PTD_LAST_MSK) >> 11)
#define PTD_LAST(v)             (((v) << 11) & PTD_LAST_MSK)
#define PTD_GET_EP(p)           (((p)->mps & PTD_EP_MSK) >> 12)
#define PTD_EP(v)               (((v) << 12) & PTD_EP_MSK)
#define PTD_GET_LEN(p)          (((p)->len & PTD_LEN_MSK) >> 0)
#define PTD_LEN(v)              (((v) << 0) & PTD_LEN_MSK)
#define PTD_GET_DIR(p)          (((p)->len & PTD_DIR_MSK) >> 10)
#define PTD_DIR(v)              (((v) << 10) & PTD_DIR_MSK)
#define PTD_GET_B5_5(p)         (((p)->len & PTD_B5_5_MSK) >> 13)
#define PTD_B5_5(v)             (((v) << 13) & PTD_B5_5_MSK)
#define PTD_GET_FA(p)           (((p)->faddr & PTD_FA_MSK) >> 0)
#define PTD_FA(v)               (((v) << 0) & PTD_FA_MSK)
#define PTD_GET_FMT(p)          (((p)->faddr & PTD_FMT_MSK) >> 7)
#define PTD_FMT(v)              (((v) << 7) & PTD_FMT_MSK)

/*  Hardware transfer status codes -- CC from ptd->count */
#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
    /* 0x0A, 0x0B reserved for hardware */
#define TD_BUFFEROVERRUN   0x0C
#define TD_BUFFERUNDERRUN  0x0D
    /* 0x0E, 0x0F reserved for HCD */
#define TD_NOTACCESSED     0x0F

/* map PTD status codes (CC) to errno values */
static const int cc_to_error[16] = {
        /* No  Error  */ 0,
        /* CRC Error  */ -EILSEQ,
        /* Bit Stuff  */ -EPROTO,
        /* Data Togg  */ -EILSEQ,
        /* Stall      */ -EPIPE,
        /* DevNotResp */ -ETIME,
        /* PIDCheck   */ -EPROTO,
        /* UnExpPID   */ -EPROTO,
        /* DataOver   */ -EOVERFLOW,
        /* DataUnder  */ -EREMOTEIO,
        /* (for hw)   */ -EIO,
        /* (for hw)   */ -EIO,
        /* BufferOver */ -ECOMM,
        /* BuffUnder  */ -ENOSR,
        /* (for HCD)  */ -EALREADY,
        /* (for HCD)  */ -EALREADY
};

/*--------------------------------------------------------------*/

#define LOG2_PERIODIC_SIZE      5       /* arbitrary; this matches OHCI */
#define PERIODIC_SIZE           (1 << LOG2_PERIODIC_SIZE)

struct isp116x {
        spinlock_t lock;

        void __iomem *addr_reg;
        void __iomem *data_reg;

        struct isp116x_platform_data *board;

        unsigned long stat1, stat2, stat4, stat8, stat16;

        /* HC registers */
        u32 intenb;             /* "OHCI" interrupts */
        u16 irqenb;             /* uP interrupts */

        /* Root hub registers */
        u32 rhdesca;
        u32 rhdescb;
        u32 rhstatus;

        /* async schedule: control, bulk */
        struct list_head async;

        /* periodic schedule: int */
        u16 load[PERIODIC_SIZE];
        struct isp116x_ep *periodic[PERIODIC_SIZE];
        unsigned periodic_count;
        u16 fmindex;

        /* Schedule for the current frame */
        struct isp116x_ep *atl_active;
        int atl_buflen;
        int atl_bufshrt;
        int atl_last_dir;
        atomic_t atl_finishing;
};

static inline struct isp116x *hcd_to_isp116x(struct usb_hcd *hcd)
{
        return (struct isp116x *)(hcd->hcd_priv);
}

static inline struct usb_hcd *isp116x_to_hcd(struct isp116x *isp116x)
{
        return container_of((void *)isp116x, struct usb_hcd, hcd_priv);
}

struct isp116x_ep {
        struct usb_host_endpoint *hep;
        struct usb_device *udev;
        struct ptd ptd;

        u8 maxpacket;
        u8 epnum;
        u8 nextpid;
        u16 error_count;
        u16 length;             /* of current packet */
        unsigned char *data;    /* to databuf */
        /* queue of active EP's (the ones scheduled for the
           current frame) */
        struct isp116x_ep *active;

        /* periodic schedule */
        u16 period;
        u16 branch;
        u16 load;
        struct isp116x_ep *next;

        /* async schedule */
        struct list_head schedule;
};

/*-------------------------------------------------------------------------*/

#define DBG(stuff...)           pr_debug("116x: " stuff)

#ifdef VERBOSE
#    define VDBG                DBG
#else
#    define VDBG(stuff...)      do{}while(0)
#endif

#define ERR(stuff...)           printk(KERN_ERR "116x: " stuff)
#define WARNING(stuff...)       printk(KERN_WARNING "116x: " stuff)
#define INFO(stuff...)          printk(KERN_INFO "116x: " stuff)

/* ------------------------------------------------- */

#if defined(USE_PLATFORM_DELAY)
#if defined(USE_NDELAY)
#error USE_PLATFORM_DELAY and USE_NDELAY simultaneously defined.
#endif
#define isp116x_delay(h,d)      (h)->board->delay(      \
                                isp116x_to_hcd(h)->self.controller,d)
#define isp116x_check_platform_delay(h) ((h)->board->delay == NULL)
#elif defined(USE_NDELAY)
#define isp116x_delay(h,d)      ndelay(d)
#define isp116x_check_platform_delay(h) 0
#else
#define isp116x_delay(h,d)      do{}while(0)
#define isp116x_check_platform_delay(h) 0
#endif

static inline void isp116x_write_addr(struct isp116x *isp116x, unsigned reg)
{
        writew(reg & 0xff, isp116x->addr_reg);
        isp116x_delay(isp116x, 300);
}

static inline void isp116x_write_data16(struct isp116x *isp116x, u16 val)
{
        writew(val, isp116x->data_reg);
        isp116x_delay(isp116x, 150);
}

static inline void isp116x_raw_write_data16(struct isp116x *isp116x, u16 val)
{
        __raw_writew(val, isp116x->data_reg);
        isp116x_delay(isp116x, 150);
}

static inline u16 isp116x_read_data16(struct isp116x *isp116x)
{
        u16 val;

        val = readw(isp116x->data_reg);
        isp116x_delay(isp116x, 150);
        return val;
}

static inline u16 isp116x_raw_read_data16(struct isp116x *isp116x)
{
        u16 val;

        val = __raw_readw(isp116x->data_reg);
        isp116x_delay(isp116x, 150);
        return val;
}

static inline void isp116x_write_data32(struct isp116x *isp116x, u32 val)
{
        writew(val & 0xffff, isp116x->data_reg);
        isp116x_delay(isp116x, 150);
        writew(val >> 16, isp116x->data_reg);
        isp116x_delay(isp116x, 150);
}

static inline u32 isp116x_read_data32(struct isp116x *isp116x)
{
        u32 val;

        val = (u32) readw(isp116x->data_reg);
        isp116x_delay(isp116x, 150);
        val |= ((u32) readw(isp116x->data_reg)) << 16;
        isp116x_delay(isp116x, 150);
        return val;
}

/* Let's keep register access functions out of line. Hint:
   we wait at least 150 ns at every access.
*/
static u16 isp116x_read_reg16(struct isp116x *isp116x, unsigned reg)
{
        isp116x_write_addr(isp116x, reg);
        return isp116x_read_data16(isp116x);
}

static u32 isp116x_read_reg32(struct isp116x *isp116x, unsigned reg)
{
        isp116x_write_addr(isp116x, reg);
        return isp116x_read_data32(isp116x);
}

static void isp116x_write_reg16(struct isp116x *isp116x, unsigned reg,
                                unsigned val)
{
        isp116x_write_addr(isp116x, reg | ISP116x_WRITE_OFFSET);
        isp116x_write_data16(isp116x, (u16) (val & 0xffff));
}

static void isp116x_write_reg32(struct isp116x *isp116x, unsigned reg,
                                unsigned val)
{
        isp116x_write_addr(isp116x, reg | ISP116x_WRITE_OFFSET);
        isp116x_write_data32(isp116x, (u32) val);
}

#define isp116x_show_reg_log(d,r,s) {                           \
        if ((r) < 0x20) {                                       \
                DBG("%-12s[%02x]: %08x\n", #r,                  \
                        r, isp116x_read_reg32(d, r));           \
        } else {                                                \
                DBG("%-12s[%02x]:     %04x\n", #r,              \
                        r, isp116x_read_reg16(d, r));           \
        }                                                       \
}
#define isp116x_show_reg_seq(d,r,s) {                           \
        if ((r) < 0x20) {                                       \
                seq_printf(s, "%-12s[%02x]: %08x\n", #r,        \
                        r, isp116x_read_reg32(d, r));           \
        } else {                                                \
                seq_printf(s, "%-12s[%02x]:     %04x\n", #r,    \
                        r, isp116x_read_reg16(d, r));           \
        }                                                       \
}

#define isp116x_show_regs(d,type,s) {                   \
        isp116x_show_reg_##type(d, HCREVISION, s);      \
        isp116x_show_reg_##type(d, HCCONTROL, s);       \
        isp116x_show_reg_##type(d, HCCMDSTAT, s);       \
        isp116x_show_reg_##type(d, HCINTSTAT, s);       \
        isp116x_show_reg_##type(d, HCINTENB, s);        \
        isp116x_show_reg_##type(d, HCFMINTVL, s);       \
        isp116x_show_reg_##type(d, HCFMREM, s);         \
        isp116x_show_reg_##type(d, HCFMNUM, s);         \
        isp116x_show_reg_##type(d, HCLSTHRESH, s);      \
        isp116x_show_reg_##type(d, HCRHDESCA, s);       \
        isp116x_show_reg_##type(d, HCRHDESCB, s);       \
        isp116x_show_reg_##type(d, HCRHSTATUS, s);      \
        isp116x_show_reg_##type(d, HCRHPORT1, s);       \
        isp116x_show_reg_##type(d, HCRHPORT2, s);       \
        isp116x_show_reg_##type(d, HCHWCFG, s);         \
        isp116x_show_reg_##type(d, HCDMACFG, s);        \
        isp116x_show_reg_##type(d, HCXFERCTR, s);       \
        isp116x_show_reg_##type(d, HCuPINT, s);         \
        isp116x_show_reg_##type(d, HCuPINTENB, s);      \
        isp116x_show_reg_##type(d, HCCHIPID, s);        \
        isp116x_show_reg_##type(d, HCSCRATCH, s);       \
        isp116x_show_reg_##type(d, HCITLBUFLEN, s);     \
        isp116x_show_reg_##type(d, HCATLBUFLEN, s);     \
        isp116x_show_reg_##type(d, HCBUFSTAT, s);       \
        isp116x_show_reg_##type(d, HCRDITL0LEN, s);     \
        isp116x_show_reg_##type(d, HCRDITL1LEN, s);     \
}

/*
   Dump registers for debugfs.
*/
static inline void isp116x_show_regs_seq(struct isp116x *isp116x,
                                          struct seq_file *s)
{
        isp116x_show_regs(isp116x, seq, s);
}

/*
   Dump registers to syslog.
*/
static inline void isp116x_show_regs_log(struct isp116x *isp116x)
{
        isp116x_show_regs(isp116x, log, NULL);
}

#if defined(URB_TRACE)

#define PIPETYPE(pipe)  ({ char *__s;                   \
        if (usb_pipecontrol(pipe))      __s = "ctrl";   \
        else if (usb_pipeint(pipe))     __s = "int";    \
        else if (usb_pipebulk(pipe))    __s = "bulk";   \
        else                            __s = "iso";    \
        __s;})
#define PIPEDIR(pipe)   ({ usb_pipein(pipe) ? "in" : "out"; })
#define URB_NOTSHORT(urb) ({ (urb)->transfer_flags & URB_SHORT_NOT_OK ? \
        "short_not_ok" : ""; })

/* print debug info about the URB */
static void urb_dbg(struct urb *urb, char *msg)
{
        unsigned int pipe;

        if (!urb) {
                DBG("%s: zero urb\n", msg);
                return;
        }
        pipe = urb->pipe;
        DBG("%s: FA %d ep%d%s %s: len %d/%d %s\n", msg,
            usb_pipedevice(pipe), usb_pipeendpoint(pipe),
            PIPEDIR(pipe), PIPETYPE(pipe),
            urb->transfer_buffer_length, urb->actual_length, URB_NOTSHORT(urb));
}

#else

#define  urb_dbg(urb,msg)   do{}while(0)

#endif                          /* ! defined(URB_TRACE) */

#if defined(PTD_TRACE)

#define PTD_DIR_STR(ptd)  ({char __c;           \
        switch(PTD_GET_DIR(ptd)){               \
        case 0:  __c = 's'; break;              \
        case 1:  __c = 'o'; break;              \
        default: __c = 'i'; break;              \
        }; __c;})

/*
  Dump PTD info. The code documents the format
  perfectly, right :)
*/
static inline void dump_ptd(struct ptd *ptd)
{
        printk(KERN_WARNING "td: %x %d%c%d %d,%d,%d  %x %x%x%x\n",
               PTD_GET_CC(ptd), PTD_GET_FA(ptd),
               PTD_DIR_STR(ptd), PTD_GET_EP(ptd),
               PTD_GET_COUNT(ptd), PTD_GET_LEN(ptd), PTD_GET_MPS(ptd),
               PTD_GET_TOGGLE(ptd), PTD_GET_ACTIVE(ptd),
               PTD_GET_SPD(ptd), PTD_GET_LAST(ptd));
}

static inline void dump_ptd_out_data(struct ptd *ptd, u8 * buf)
{
        int k;

        if (PTD_GET_DIR(ptd) != PTD_DIR_IN && PTD_GET_LEN(ptd)) {
                printk(KERN_WARNING "-> ");
                for (k = 0; k < PTD_GET_LEN(ptd); ++k)
                        printk("%02x ", ((u8 *) buf)[k]);
                printk("\n");
        }
}

static inline void dump_ptd_in_data(struct ptd *ptd, u8 * buf)
{
        int k;

        if (PTD_GET_DIR(ptd) == PTD_DIR_IN && PTD_GET_COUNT(ptd)) {
                printk(KERN_WARNING "<- ");
                for (k = 0; k < PTD_GET_COUNT(ptd); ++k)
                        printk("%02x ", ((u8 *) buf)[k]);
                printk("\n");
        }
        if (PTD_GET_LAST(ptd))
                printk(KERN_WARNING "-\n");
}

#else

#define dump_ptd(ptd)               do{}while(0)
#define dump_ptd_in_data(ptd,buf)   do{}while(0)
#define dump_ptd_out_data(ptd,buf)  do{}while(0)

#endif                          /* ! defined(PTD_TRACE) */