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hwstub: fix library to actually work and compile, still miss some functions

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Change-Id: I968dafb4dca7d674165a43e3a435762fe38ed37f
This commit is contained in:
Amaury Pouly 2014-08-04 20:26:48 +02:00
parent 12ce7fc2cc
commit 43ca127ebf
2 changed files with 53 additions and 6 deletions
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6
utils/hwstub/hwstub_protocol.h
View file

@ -47,8 +47,8 @@
*/
#define HWSTUB_CLASS 0xff
#define HWSTUB_SUBCLASS 0x57
#define HWSTUB_PROTOCOL 0x0b
#define HWSTUB_SUBCLASS 0xde
#define HWSTUB_PROTOCOL 0xad
/**
* Descriptors can be retrieved using configuration descriptor or individually
@ -184,6 +184,6 @@ struct hwstub_exec_req_t
{
uint32_t dAddress;
uint16_t bmFlags;
};
} __attribute__((packed));
#endif /* __HWSTUB_PROTOCOL__ */

53
utils/hwstub/lib/hwstub.c
View file

@ -101,7 +101,7 @@ struct hwstub_device_t *hwstub_open(libusb_device_handle *handle)
struct hwstub_layout_desc_t layout;
int sz = hwstub_get_desc(dev, HWSTUB_DT_LAYOUT, &layout, sizeof(layout));
if(sz == (int)sizeof(layout))
dev->buf_sz = layout->dBufferSize;
dev->buf_sz = layout.dBufferSize;
return dev;
Lerr:
@ -135,16 +135,59 @@ static int _hwstub_read(struct hwstub_device_t *dev, uint32_t addr, void *buf, s
read.dAddress = addr;
int size = libusb_control_transfer(dev->handle,
LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_INTERFACE | LIBUSB_ENDPOINT_OUT,
HWSTUB_READ, dev->id, dev->intf, &read, sizeof(read), 1000);
HWSTUB_READ, dev->id, dev->intf, (void *)&read, sizeof(read), 1000);
if(size != (int)sizeof(read))
return -1;
return libusb_control_transfer(dev->handle,
LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_INTERFACE | LIBUSB_ENDPOINT_IN,
HWSTUB_READ2, dev->id++, dev->intf, &read, sizeof(read), 1000);
HWSTUB_READ2, dev->id++, dev->intf, buf, sz, 1000);
}
static int _hwstub_write(struct hwstub_device_t *dev, uint32_t addr, void *buf, size_t sz)
{
size_t hdr_sz = sizeof(struct hwstub_write_req_t);
struct hwstub_write_req_t *req = malloc(sz + hdr_sz);
req->dAddress = addr;
memcpy(req + 1, buf, sz);
int size = libusb_control_transfer(dev->handle,
LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_INTERFACE | LIBUSB_ENDPOINT_OUT,
HWSTUB_WRITE, dev->id++, dev->intf, (void *)req, sz + hdr_sz, 1000);
free(req);
return size - hdr_sz;
}
/* Intermediate function which make sure we don't overflow the device buffer */
int hwstub_read(struct hwstub_device_t *dev, uint32_t addr, void *buf, size_t sz)
{
int cnt = 0;
while(sz > 0)
{
int xfer = _hwstub_read(dev, addr, buf, MIN(sz, dev->buf_sz));
if(xfer < 0)
return xfer;
sz -= xfer;
buf += xfer;
addr += xfer;
cnt += xfer;
}
return cnt;
}
/* Intermediate function which make sure we don't overflow the device buffer */
int hwstub_write(struct hwstub_device_t *dev, uint32_t addr, void *buf, size_t sz)
{
int cnt = 0;
while(sz > 0)
{
int xfer = _hwstub_write(dev, addr, buf, MIN(sz, dev->buf_sz - sizeof(struct hwstub_write_req_t)));
if(xfer < 0)
return xfer;
sz -= xfer;
buf += xfer;
addr += xfer;
cnt += xfer;
}
return cnt;
}
int hwstub_rw_mem(struct hwstub_device_t *dev, int read, uint32_t addr, void *buf, size_t sz)
@ -160,6 +203,8 @@ int hwstub_call(struct hwstub_device_t *dev, uint32_t addr)
LIBUSB_ENDPOINT_OUT, HWSTUB_CALL, addr & 0xffff, addr >> 16, NULL, 0,
1000);
#else
(void) dev;
(void) addr;
return -1;
#endif
}
@ -172,6 +217,8 @@ int hwstub_jump(struct hwstub_device_t *dev, uint32_t addr)
LIBUSB_ENDPOINT_OUT, HWSTUB_JUMP, addr & 0xffff, addr >> 16, NULL, 0,
1000);
#else
(void) dev;
(void) addr;
return -1;
#endif
}