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remarkable-linux/drivers/usb/host/isp116x.h
Greg Kroah-Hartman 1d896ceae4 USB: isp116x: remove dependency on CONFIG_USB_DEBUG 
Move all debugging messages in the driver to use the dynamic debug
subsystem, and not rely on CONFIG_USB_DEBUG to turn them on or off.

This lets debugging be enabled without having to rebuild the driver, an
important thing for users that can not do it.

It also removes the pointless IRQ_TEST() macro, as that was totally
useless and obviously never used.

Cc: Olav Kongas <ok@artecdesign.ee>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-23 16:35:17 -07:00

596 lines
18 KiB
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/*
* 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;
struct dentry *dentry;
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) */
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