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Merge branch 'icarus-dev' into avalon-usbdev

nfactor-troky
Con Kolivas 11 years ago
parent
8595f3bd74 6c952105ed
commit
2d4a1db57e
1 changed files with 152 additions and 49 deletions
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  1. 201
      usbutils.c

201
usbutils.c
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@ -336,8 +336,28 @@ struct usb_in_use_list {
// List of in use devices // List of in use devices
static struct usb_in_use_list *in_use_head = NULL; static struct usb_in_use_list *in_use_head = NULL;
// Set this to 0 to remove stats processing
#define DO_USB_STATS 1
static bool stats_initialised = false; static bool stats_initialised = false;
#if DO_USB_STATS
// NONE must be 0 - calloced
#define MODE_NONE 0
#define MODE_CTRL_READ (1 << 0)
#define MODE_CTRL_WRITE (1 << 1)
#define MODE_BULK_READ (1 << 2)
#define MODE_BULK_WRITE (1 << 3)
#define MODE_SEP_STR "+"
#define MODE_NONE_STR "X"
#define MODE_CTRL_READ_STR "cr"
#define MODE_CTRL_WRITE_STR "cw"
#define MODE_BULK_READ_STR "br"
#define MODE_BULK_WRITE_STR "bw"
// One for each CMD, TIMEOUT, ERROR
struct cg_usb_stats_item { struct cg_usb_stats_item {
uint64_t count; uint64_t count;
double total_delay; double total_delay;
@ -351,11 +371,14 @@ struct cg_usb_stats_item {
#define CMD_TIMEOUT 1 #define CMD_TIMEOUT 1
#define CMD_ERROR 2 #define CMD_ERROR 2
// One for each C_CMD
struct cg_usb_stats_details { struct cg_usb_stats_details {
int seq; int seq;
uint32_t modes;
struct cg_usb_stats_item item[CMD_ERROR+1]; struct cg_usb_stats_item item[CMD_ERROR+1];
}; };
// One for each device
struct cg_usb_stats { struct cg_usb_stats {
char *name; char *name;
int device_id; int device_id;
@ -368,6 +391,17 @@ struct cg_usb_stats {
static struct cg_usb_stats *usb_stats = NULL; static struct cg_usb_stats *usb_stats = NULL;
static int next_stat = 0; static int next_stat = 0;
#define USB_STATS(sgpu, sta, fin, err, mode, cmd, seq) \
stats(cgpu, sta, fin, err, mode, cmd, seq)
#define STATS_TIMEVAL(tv) cgtime(tv)
#define USB_REJECT(sgpu, mode) rejected_inc(sgpu, mode)
#else
#define USB_STATS(sgpu, sta, fin, err, mode, cmd, seq)
#define STATS_TIMEVAL(tv)
#define USB_REJECT(sgpu, mode)
#endif // DO_USB_STATS
static const char **usb_commands; static const char **usb_commands;
static const char *C_REJECTED_S = "RejectedNoDevice"; static const char *C_REJECTED_S = "RejectedNoDevice";
@ -1783,15 +1817,45 @@ void usb_detect(struct device_drv *drv, bool (*device_detect)(struct libusb_devi
libusb_free_device_list(list, 1); libusb_free_device_list(list, 1);
} }
// Set this to 0 to remove stats processing
#define DO_USB_STATS 1
#if DO_USB_STATS #if DO_USB_STATS
#define USB_STATS(sgpu, sta, fin, err, cmd, seq) stats(cgpu, sta, fin, err, cmd, seq) static void modes_str(char *buf, uint32_t modes)
#define STATS_TIMEVAL(tv) cgtime(tv) {
#else bool first;
#define USB_STATS(sgpu, sta, fin, err, cmd, seq)
#define STATS_TIMEVAL(tv) *buf = '\0';
if (modes == MODE_NONE)
strcpy(buf, MODE_NONE_STR);
else {
first = true;
if (modes & MODE_CTRL_READ) {
strcpy(buf, MODE_CTRL_READ_STR);
first = false;
}
if (modes & MODE_CTRL_WRITE) {
if (!first)
strcat(buf, MODE_SEP_STR);
strcat(buf, MODE_CTRL_WRITE_STR);
first = false;
}
if (modes & MODE_BULK_READ) {
if (!first)
strcat(buf, MODE_SEP_STR);
strcat(buf, MODE_BULK_READ_STR);
first = false;
}
if (modes & MODE_BULK_WRITE) {
if (!first)
strcat(buf, MODE_SEP_STR);
strcat(buf, MODE_BULK_WRITE_STR);
first = false;
}
}
}
#endif #endif
// The stat data can be spurious due to not locking it before copying it - // The stat data can be spurious due to not locking it before copying it -
@ -1806,6 +1870,7 @@ struct api_data *api_usb_stats(__maybe_unused int *count)
struct api_data *root = NULL; struct api_data *root = NULL;
int device; int device;
int cmdseq; int cmdseq;
char modes_s[32];
if (next_stat == 0) if (next_stat == 0)
return NULL; return NULL;
@ -1829,6 +1894,8 @@ struct api_data *api_usb_stats(__maybe_unused int *count)
root = api_add_int(root, "ID", &(sta->device_id), false); root = api_add_int(root, "ID", &(sta->device_id), false);
root = api_add_const(root, "Stat", usb_commands[cmdseq/2], false); root = api_add_const(root, "Stat", usb_commands[cmdseq/2], false);
root = api_add_int(root, "Seq", &(details->seq), true); root = api_add_int(root, "Seq", &(details->seq), true);
modes_str(modes_s, details->modes);
root = api_add_string(root, "Modes", modes_s, true);
root = api_add_uint64(root, "Count", root = api_add_uint64(root, "Count",
&(details->item[CMD_CMD].count), true); &(details->item[CMD_CMD].count), true);
root = api_add_double(root, "Total Delay", root = api_add_double(root, "Total Delay",
@ -1882,10 +1949,15 @@ static void newstats(struct cgpu_info *cgpu)
mutex_unlock(&cgusb_lock); mutex_unlock(&cgusb_lock);
usb_stats = realloc(usb_stats, sizeof(*usb_stats) * next_stat); usb_stats = realloc(usb_stats, sizeof(*usb_stats) * next_stat);
if (!usb_stats)
quit(1, "USB failed to realloc usb_stats %d", next_stat);
usb_stats[next_stat-1].name = cgpu->drv->name; usb_stats[next_stat-1].name = cgpu->drv->name;
usb_stats[next_stat-1].device_id = -1; usb_stats[next_stat-1].device_id = -1;
usb_stats[next_stat-1].details = calloc(1, sizeof(struct cg_usb_stats_details) * C_MAX * 2); usb_stats[next_stat-1].details = calloc(1, sizeof(struct cg_usb_stats_details) * C_MAX * 2);
if (!usb_stats[next_stat-1].details)
quit(1, "USB failed to calloc details for %d", next_stat);
for (i = 1; i < C_MAX * 2; i += 2) for (i = 1; i < C_MAX * 2; i += 2)
usb_stats[next_stat-1].details[i].seq = 1; usb_stats[next_stat-1].details[i].seq = 1;
} }
@ -1903,7 +1975,7 @@ void update_usb_stats(__maybe_unused struct cgpu_info *cgpu)
} }
#if DO_USB_STATS #if DO_USB_STATS
static void stats(struct cgpu_info *cgpu, struct timeval *tv_start, struct timeval *tv_finish, int err, enum usb_cmds cmd, int seq) static void stats(struct cgpu_info *cgpu, struct timeval *tv_start, struct timeval *tv_finish, int err, int mode, enum usb_cmds cmd, int seq)
{ {
struct cg_usb_stats_details *details; struct cg_usb_stats_details *details;
double diff; double diff;
@ -1913,6 +1985,7 @@ static void stats(struct cgpu_info *cgpu, struct timeval *tv_start, struct timev
newstats(cgpu); newstats(cgpu);
details = &(usb_stats[cgpu->usbinfo.usbstat - 1].details[cmd * 2 + seq]); details = &(usb_stats[cgpu->usbinfo.usbstat - 1].details[cmd * 2 + seq]);
details->modes |= mode;
diff = tdiff(tv_finish, tv_start); diff = tdiff(tv_finish, tv_start);
@ -1942,7 +2015,7 @@ static void stats(struct cgpu_info *cgpu, struct timeval *tv_start, struct timev
details->item[item].count++; details->item[item].count++;
} }
static void rejected_inc(struct cgpu_info *cgpu) static void rejected_inc(struct cgpu_info *cgpu, uint32_t mode)
{ {
struct cg_usb_stats_details *details; struct cg_usb_stats_details *details;
int item = CMD_ERROR; int item = CMD_ERROR;
@ -1951,14 +2024,14 @@ static void rejected_inc(struct cgpu_info *cgpu)
newstats(cgpu); newstats(cgpu);
details = &(usb_stats[cgpu->usbinfo.usbstat - 1].details[C_REJECTED * 2 + 0]); details = &(usb_stats[cgpu->usbinfo.usbstat - 1].details[C_REJECTED * 2 + 0]);
details->modes |= mode;
details->item[item].count++; details->item[item].count++;
} }
#endif #endif
#define USB_MAX_READ 8192 #define USB_MAX_READ 8192
int _usb_read(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *processed, unsigned int timeout, const char *end, enum usb_cmds cmd, bool readonce) int _usb_read(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *processed, unsigned int timeout, const char *end, __maybe_unused enum usb_cmds cmd, bool readonce)
{ {
struct cg_usb_device *usbdev = cgpu->usbdev; struct cg_usb_device *usbdev = cgpu->usbdev;
bool ftdi = (usbdev->usb_type == USB_TYPE_FTDI); bool ftdi = (usbdev->usb_type == USB_TYPE_FTDI);
@ -1969,7 +2042,7 @@ int _usb_read(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *pro
unsigned int initial_timeout; unsigned int initial_timeout;
double max, done; double max, done;
int bufleft, err, got, tot; int bufleft, err, got, tot;
bool first = true; __maybe_unused bool first = true;
unsigned char *search; unsigned char *search;
int endlen; int endlen;
@ -1985,9 +2058,8 @@ int _usb_read(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *pro
if (cgpu->usbinfo.nodev) { if (cgpu->usbinfo.nodev) {
*buf = '\0'; *buf = '\0';
*processed = 0; *processed = 0;
#if DO_USB_STATS USB_REJECT(cgpu, MODE_BULK_READ);
rejected_inc(cgpu);
#endif
return LIBUSB_ERROR_NO_DEVICE; return LIBUSB_ERROR_NO_DEVICE;
} }
@ -2012,8 +2084,9 @@ int _usb_read(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *pro
err = libusb_bulk_transfer(usbdev->handle, err = libusb_bulk_transfer(usbdev->handle,
usbdev->found->eps[ep].ep, usbdev->found->eps[ep].ep,
ptr, usbbufread, &got, timeout); ptr, usbbufread, &got, timeout);
STATS_TIMEVAL(&tv_finish); cgtime(&tv_finish);
USB_STATS(cgpu, &tv_start, &tv_finish, err, cmd, first ? SEQ0 : SEQ1); USB_STATS(cgpu, &tv_start, &tv_finish, err,
MODE_BULK_READ, cmd, first ? SEQ0 : SEQ1);
ptr[got] = '\0'; ptr[got] = '\0';
USBDEBUG("USB debug: @_usb_read(%s (nodev=%s)) first=%s err=%d%s got=%d ptr='%s' usbbufread=%zu", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), bool_str(first), err, isnodev(err), got, (char *)str_text((char *)ptr), usbbufread); USBDEBUG("USB debug: @_usb_read(%s (nodev=%s)) first=%s err=%d%s got=%d ptr='%s' usbbufread=%zu", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), bool_str(first), err, isnodev(err), got, (char *)str_text((char *)ptr), usbbufread);
@ -2040,7 +2113,7 @@ int _usb_read(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *pro
first = false; first = false;
done = tdiff(&tv_finish, &read_start); done = tdiff(&tv_finish, &read_start);
// N.B. this is return LIBUSB_SUCCESS with whatever size has already been read // N.B. this is: return LIBUSB_SUCCESS with whatever size has already been read
if (unlikely(done >= max)) if (unlikely(done >= max))
break; break;
@ -2075,7 +2148,8 @@ int _usb_read(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *pro
usbdev->found->eps[ep].ep, usbdev->found->eps[ep].ep,
ptr, usbbufread, &got, timeout); ptr, usbbufread, &got, timeout);
cgtime(&tv_finish); cgtime(&tv_finish);
USB_STATS(cgpu, &tv_start, &tv_finish, err, cmd, first ? SEQ0 : SEQ1); USB_STATS(cgpu, &tv_start, &tv_finish, err,
MODE_BULK_READ, cmd, first ? SEQ0 : SEQ1);
ptr[got] = '\0'; ptr[got] = '\0';
USBDEBUG("USB debug: @_usb_read(%s (nodev=%s)) first=%s err=%d%s got=%d ptr='%s' usbbufread=%zu", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), bool_str(first), err, isnodev(err), got, (char *)str_text((char *)ptr), usbbufread); USBDEBUG("USB debug: @_usb_read(%s (nodev=%s)) first=%s err=%d%s got=%d ptr='%s' usbbufread=%zu", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), bool_str(first), err, isnodev(err), got, (char *)str_text((char *)ptr), usbbufread);
@ -2120,7 +2194,7 @@ int _usb_read(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *pro
first = false; first = false;
done = tdiff(&tv_finish, &read_start); done = tdiff(&tv_finish, &read_start);
// N.B. this is return LIBUSB_SUCCESS with whatever size has already been read // N.B. this is: return LIBUSB_SUCCESS with whatever size has already been read
if (unlikely(done >= max)) if (unlikely(done >= max))
break; break;
@ -2136,37 +2210,68 @@ int _usb_read(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *pro
return err; return err;
} }
int _usb_write(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *processed, unsigned int timeout, enum usb_cmds cmd) int _usb_write(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *processed, unsigned int timeout, __maybe_unused enum usb_cmds cmd)
{ {
struct cg_usb_device *usbdev = cgpu->usbdev; struct cg_usb_device *usbdev = cgpu->usbdev;
#if DO_USB_STATS #if DO_USB_STATS
struct timeval tv_start, tv_finish; struct timeval tv_start;
#endif #endif
int err, sent; struct timeval read_start, tv_finish;
unsigned int initial_timeout;
double max, done;
__maybe_unused bool first = true;
int err, sent, tot;
USBDEBUG("USB debug: _usb_write(%s (nodev=%s),ep=%d,buf='%s',bufsiz=%zu,proc=%p,timeout=%u,cmd=%s)", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), ep, (char *)str_text(buf), bufsiz, processed, timeout, usb_cmdname(cmd)); USBDEBUG("USB debug: _usb_write(%s (nodev=%s),ep=%d,buf='%s',bufsiz=%zu,proc=%p,timeout=%u,cmd=%s)", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), ep, (char *)str_text(buf), bufsiz, processed, timeout, usb_cmdname(cmd));
*processed = 0;
if (cgpu->usbinfo.nodev) { if (cgpu->usbinfo.nodev) {
*processed = 0; USB_REJECT(cgpu, MODE_BULK_WRITE);
#if DO_USB_STATS
rejected_inc(cgpu);
#endif
return LIBUSB_ERROR_NO_DEVICE; return LIBUSB_ERROR_NO_DEVICE;
} }
sent = 0; if (timeout == DEVTIMEOUT)
STATS_TIMEVAL(&tv_start); timeout = usbdev->found->timeout;
err = libusb_bulk_transfer(usbdev->handle,
usbdev->found->eps[ep].ep, tot = 0;
(unsigned char *)buf, err = LIBUSB_SUCCESS;
bufsiz, &sent, initial_timeout = timeout;
timeout == DEVTIMEOUT ? usbdev->found->timeout : timeout); max = ((double)timeout) / 1000.0;
STATS_TIMEVAL(&tv_finish); cgtime(&read_start);
USB_STATS(cgpu, &tv_start, &tv_finish, err, cmd, SEQ0); while (bufsiz > 0) {
sent = 0;
STATS_TIMEVAL(&tv_start);
err = libusb_bulk_transfer(usbdev->handle,
usbdev->found->eps[ep].ep,
(unsigned char *)buf,
bufsiz, &sent, timeout);
cgtime(&tv_finish);
USB_STATS(cgpu, &tv_start, &tv_finish, err,
MODE_BULK_WRITE, cmd, first ? SEQ0 : SEQ1);
USBDEBUG("USB debug: @_usb_write(%s (nodev=%s)) err=%d%s sent=%d", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), err, isnodev(err), sent); USBDEBUG("USB debug: @_usb_write(%s (nodev=%s)) err=%d%s sent=%d", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), err, isnodev(err), sent);
*processed = sent; tot += sent;
if (err)
break;
buf += sent;
bufsiz -= sent;
first = false;
done = tdiff(&tv_finish, &read_start);
// N.B. this is: return LIBUSB_SUCCESS with whatever size was written
if (unlikely(done >= max))
break;
timeout = initial_timeout - (done * 1000);
}
*processed = tot;
if (NODEV(err)) if (NODEV(err))
release_cgpu(cgpu); release_cgpu(cgpu);
@ -2174,7 +2279,7 @@ int _usb_write(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *pr
return err; return err;
} }
int _usb_transfer(struct cgpu_info *cgpu, uint8_t request_type, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint32_t *data, int siz, unsigned int timeout, enum usb_cmds cmd) int _usb_transfer(struct cgpu_info *cgpu, uint8_t request_type, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint32_t *data, int siz, unsigned int timeout, __maybe_unused enum usb_cmds cmd)
{ {
struct cg_usb_device *usbdev = cgpu->usbdev; struct cg_usb_device *usbdev = cgpu->usbdev;
#if DO_USB_STATS #if DO_USB_STATS
@ -2186,9 +2291,8 @@ int _usb_transfer(struct cgpu_info *cgpu, uint8_t request_type, uint8_t bRequest
USBDEBUG("USB debug: _usb_transfer(%s (nodev=%s),type=%"PRIu8",req=%"PRIu8",value=%"PRIu16",index=%"PRIu16",siz=%d,timeout=%u,cmd=%s)", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), request_type, bRequest, wValue, wIndex, siz, timeout, usb_cmdname(cmd)); USBDEBUG("USB debug: _usb_transfer(%s (nodev=%s),type=%"PRIu8",req=%"PRIu8",value=%"PRIu16",index=%"PRIu16",siz=%d,timeout=%u,cmd=%s)", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), request_type, bRequest, wValue, wIndex, siz, timeout, usb_cmdname(cmd));
if (cgpu->usbinfo.nodev) { if (cgpu->usbinfo.nodev) {
#if DO_USB_STATS USB_REJECT(cgpu, MODE_CTRL_WRITE);
rejected_inc(cgpu);
#endif
return LIBUSB_ERROR_NO_DEVICE; return LIBUSB_ERROR_NO_DEVICE;
} }
@ -2213,7 +2317,7 @@ int _usb_transfer(struct cgpu_info *cgpu, uint8_t request_type, uint8_t bRequest
(unsigned char *)buf, (uint16_t)siz, (unsigned char *)buf, (uint16_t)siz,
timeout == DEVTIMEOUT ? usbdev->found->timeout : timeout); timeout == DEVTIMEOUT ? usbdev->found->timeout : timeout);
STATS_TIMEVAL(&tv_finish); STATS_TIMEVAL(&tv_finish);
USB_STATS(cgpu, &tv_start, &tv_finish, err, cmd, SEQ0); USB_STATS(cgpu, &tv_start, &tv_finish, err, MODE_CTRL_WRITE, cmd, SEQ0);
USBDEBUG("USB debug: @_usb_transfer(%s (nodev=%s)) err=%d%s", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), err, isnodev(err)); USBDEBUG("USB debug: @_usb_transfer(%s (nodev=%s)) err=%d%s", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), err, isnodev(err));
@ -2226,7 +2330,7 @@ int _usb_transfer(struct cgpu_info *cgpu, uint8_t request_type, uint8_t bRequest
return err; return err;
} }
int _usb_transfer_read(struct cgpu_info *cgpu, uint8_t request_type, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, char *buf, int bufsiz, int *amount, unsigned int timeout, enum usb_cmds cmd) int _usb_transfer_read(struct cgpu_info *cgpu, uint8_t request_type, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, char *buf, int bufsiz, int *amount, unsigned int timeout, __maybe_unused enum usb_cmds cmd)
{ {
struct cg_usb_device *usbdev = cgpu->usbdev; struct cg_usb_device *usbdev = cgpu->usbdev;
#if DO_USB_STATS #if DO_USB_STATS
@ -2237,9 +2341,8 @@ int _usb_transfer_read(struct cgpu_info *cgpu, uint8_t request_type, uint8_t bRe
USBDEBUG("USB debug: _usb_transfer_read(%s (nodev=%s),type=%"PRIu8",req=%"PRIu8",value=%"PRIu16",index=%"PRIu16",bufsiz=%d,timeout=%u,cmd=%s)", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), request_type, bRequest, wValue, wIndex, bufsiz, timeout, usb_cmdname(cmd)); USBDEBUG("USB debug: _usb_transfer_read(%s (nodev=%s),type=%"PRIu8",req=%"PRIu8",value=%"PRIu16",index=%"PRIu16",bufsiz=%d,timeout=%u,cmd=%s)", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), request_type, bRequest, wValue, wIndex, bufsiz, timeout, usb_cmdname(cmd));
if (cgpu->usbinfo.nodev) { if (cgpu->usbinfo.nodev) {
#if DO_USB_STATS USB_REJECT(cgpu, MODE_CTRL_READ);
rejected_inc(cgpu);
#endif
return LIBUSB_ERROR_NO_DEVICE; return LIBUSB_ERROR_NO_DEVICE;
} }
@ -2251,7 +2354,7 @@ int _usb_transfer_read(struct cgpu_info *cgpu, uint8_t request_type, uint8_t bRe
(unsigned char *)buf, (uint16_t)bufsiz, (unsigned char *)buf, (uint16_t)bufsiz,
timeout == DEVTIMEOUT ? usbdev->found->timeout : timeout); timeout == DEVTIMEOUT ? usbdev->found->timeout : timeout);
STATS_TIMEVAL(&tv_finish); STATS_TIMEVAL(&tv_finish);
USB_STATS(cgpu, &tv_start, &tv_finish, err, cmd, SEQ0); USB_STATS(cgpu, &tv_start, &tv_finish, err, MODE_CTRL_READ, cmd, SEQ0);
USBDEBUG("USB debug: @_usb_transfer_read(%s (nodev=%s)) amt/err=%d%s%s%s", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), err, isnodev(err), err > 0 ? " = " : BLANK, err > 0 ? bin2hex((unsigned char *)buf, (size_t)err) : BLANK); USBDEBUG("USB debug: @_usb_transfer_read(%s (nodev=%s)) amt/err=%d%s%s%s", cgpu->drv->name, bool_str(cgpu->usbinfo.nodev), err, isnodev(err), err > 0 ? " = " : BLANK, err > 0 ? bin2hex((unsigned char *)buf, (size_t)err) : BLANK);

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