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Commit 05c6c871 authored by Antonio Borneo's avatar Antonio Borneo Committed by Tomas Vanek
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drivers/stlink_usb: check error code returned by st-link 



Most of ST-Link commands return an error code, but this is almost
never checked.

Check for the error code for every command that returns it.

Change-Id: Ifc4e32f8c73196de23700ba0989bfdfe0f5b46e3
Signed-off-by: default avatarAntonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4825


Tested-by: jenkins
Reviewed-by: default avatarTomas Vanek <vanekt@fbl.cz>
parent d46b2898
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Inline Side-by-side
src/jtag/drivers/stlink_usb.c
View file @ 05c6c871
......@@ -644,8 +644,9 @@ static int stlink_usb_xfer_v1_get_sense(void *handle)
transfers block in cmdbuf
<size> indicates number of bytes in the following
data phase.
Ignore the (eventual) error code in the received packet.
*/
static int stlink_usb_xfer(void *handle, const uint8_t *buf, int size)
static int stlink_usb_xfer_noerrcheck(void *handle, const uint8_t *buf, int size)
{
int err, cmdsize = STLINK_CMD_SIZE_V2;
struct stlink_usb_handle_s *h = handle;
......@@ -766,6 +767,22 @@ static int stlink_usb_error_check(void *handle)
}
}
/*
* Wrapper around stlink_usb_xfer_noerrcheck()
* to check the error code in the received packet
*/
static int stlink_usb_xfer_errcheck(void *handle, const uint8_t *buf, int size)
{
int retval;
assert(size > 0);
retval = stlink_usb_xfer_noerrcheck(handle, buf, size);
if (retval != ERROR_OK)
return retval;
return stlink_usb_error_check(handle);
}
/** Issue an STLINK command via USB transfer, with retries on any wait status responses.
......@@ -782,7 +799,7 @@ static int stlink_cmd_allow_retry(void *handle, const uint8_t *buf, int size)
while (1) {
if ((h->transport != HL_TRANSPORT_SWIM) || !retries) {
res = stlink_usb_xfer(handle, buf, size);
res = stlink_usb_xfer_noerrcheck(handle, buf, size);
if (res != ERROR_OK)
return res;
}
......@@ -886,7 +903,7 @@ static int stlink_usb_version(void *handle)
h->cmdbuf[h->cmdidx++] = STLINK_GET_VERSION;
res = stlink_usb_xfer(handle, h->databuf, 6);
res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 6);
if (res != ERROR_OK)
return res;
......@@ -927,7 +944,7 @@ static int stlink_usb_version(void *handle)
h->cmdbuf[h->cmdidx++] = STLINK_APIV3_GET_VERSION_EX;
res = stlink_usb_xfer(handle, h->databuf, 12);
res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 12);
if (res != ERROR_OK)
return res;
......@@ -1035,7 +1052,7 @@ static int stlink_usb_check_voltage(void *handle, float *target_voltage)
h->cmdbuf[h->cmdidx++] = STLINK_GET_TARGET_VOLTAGE;
int result = stlink_usb_xfer(handle, h->databuf, 8);
int result = stlink_usb_xfer_noerrcheck(handle, h->databuf, 8);
if (result != ERROR_OK)
return result;
......@@ -1114,7 +1131,7 @@ static int stlink_usb_current_mode(void *handle, uint8_t *mode)
h->cmdbuf[h->cmdidx++] = STLINK_GET_CURRENT_MODE;
res = stlink_usb_xfer(handle, h->databuf, 2);
res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 2);
if (res != ERROR_OK)
return res;
......@@ -1202,7 +1219,7 @@ static int stlink_usb_mode_leave(void *handle, enum stlink_mode type)
return ERROR_FAIL;
}
res = stlink_usb_xfer(handle, 0, 0);
res = stlink_usb_xfer_noerrcheck(handle, 0, 0);
if (res != ERROR_OK)
return res;
......@@ -1348,7 +1365,8 @@ static int stlink_swim_status(void *handle)
stlink_usb_init_buffer(handle, h->rx_ep, 4);
h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
h->cmdbuf[h->cmdidx++] = STLINK_SWIM_READSTATUS;
res = stlink_usb_xfer(handle, h->databuf, 4);
/* error is checked by the caller */
res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 4);
if (res != ERROR_OK)
return res;
return ERROR_OK;
......@@ -1368,7 +1386,7 @@ static int stlink_swim_cap(void *handle, uint8_t *cap)
h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
h->cmdbuf[h->cmdidx++] = STLINK_SWIM_READ_CAP;
h->cmdbuf[h->cmdidx++] = 0x01;
res = stlink_usb_xfer(handle, h->databuf, 8);
res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 8);
if (res != ERROR_OK)
return res;
memcpy(cap, h->databuf, 8);
......@@ -1525,7 +1543,7 @@ static int stlink_swim_readbytes(void *handle, uint32_t addr, uint32_t len, uint
stlink_usb_init_buffer(handle, h->rx_ep, len);
h->cmdbuf[h->cmdidx++] = STLINK_SWIM_COMMAND;
h->cmdbuf[h->cmdidx++] = STLINK_SWIM_READBUF;
res = stlink_usb_xfer(handle, data, len);
res = stlink_usb_xfer_noerrcheck(handle, data, len);
if (res != ERROR_OK)
return res;
......@@ -1551,7 +1569,7 @@ static int stlink_usb_idcode(void *handle, uint32_t *idcode)
h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_READCOREID;
res = stlink_usb_xfer(handle, h->databuf, 4);
res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 4);
if (res != ERROR_OK)
return res;
......@@ -1621,7 +1639,7 @@ static int stlink_usb_trace_read(void *handle, uint8_t *buf, size_t *size)
h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_GET_TRACE_NB;
res = stlink_usb_xfer(handle, h->databuf, 2);
res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 2);
if (res != ERROR_OK)
return res;
......@@ -1698,7 +1716,7 @@ static enum target_state stlink_usb_state(void *handle)
h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_GETSTATUS;
res = stlink_usb_xfer(handle, h->databuf, 2);
res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 2);
if (res != ERROR_OK)
return TARGET_UNKNOWN;
......@@ -1749,7 +1767,7 @@ static void stlink_usb_trace_disable(void *handle)
stlink_usb_init_buffer(handle, h->rx_ep, 2);
h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_STOP_TRACE_RX;
res = stlink_usb_xfer(handle, h->databuf, 2);
res = stlink_usb_xfer_errcheck(handle, h->databuf, 2);
if (res == ERROR_OK)
h->trace.enabled = false;
......@@ -1774,7 +1792,7 @@ static int stlink_usb_trace_enable(void *handle)
h_u32_to_le(h->cmdbuf+h->cmdidx, h->trace.source_hz);
h->cmdidx += 4;
res = stlink_usb_xfer(handle, h->databuf, 2);
res = stlink_usb_xfer_errcheck(handle, h->databuf, 2);
if (res == ERROR_OK) {
h->trace.enabled = true;
......@@ -1901,11 +1919,11 @@ static int stlink_usb_read_regs(void *handle)
if (h->version.jtag_api == STLINK_JTAG_API_V1) {
h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV1_READALLREGS;
res = stlink_usb_xfer(handle, h->databuf, 84);
res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 84);
/* regs data from offset 0 */
} else {
h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_READALLREGS;
res = stlink_usb_xfer(handle, h->databuf, 88);
res = stlink_usb_xfer_errcheck(handle, h->databuf, 88);
/* status at offset 0, regs data from offset 4 */
}
......@@ -1930,7 +1948,7 @@ static int stlink_usb_read_reg(void *handle, int num, uint32_t *val)
h->cmdbuf[h->cmdidx++] = num;
if (h->version.jtag_api == STLINK_JTAG_API_V1) {
res = stlink_usb_xfer(handle, h->databuf, 4);
res = stlink_usb_xfer_noerrcheck(handle, h->databuf, 4);
if (res != ERROR_OK)
return res;
*val = le_to_h_u32(h->databuf);
......@@ -1967,7 +1985,6 @@ static int stlink_usb_write_reg(void *handle, int num, uint32_t val)
static int stlink_usb_get_rw_status(void *handle)
{
int res;
struct stlink_usb_handle_s *h = handle;
assert(handle != NULL);
......@@ -1980,18 +1997,11 @@ static int stlink_usb_get_rw_status(void *handle)
h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_COMMAND;
if (h->version.flags & STLINK_F_HAS_GETLASTRWSTATUS2) {
h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_GETLASTRWSTATUS2;
res = stlink_usb_xfer(handle, h->databuf, 12);
return stlink_usb_xfer_errcheck(handle, h->databuf, 12);
} else {
h->cmdbuf[h->cmdidx++] = STLINK_DEBUG_APIV2_GETLASTRWSTATUS;
res = stlink_usb_xfer(handle, h->databuf, 2);
return stlink_usb_xfer_errcheck(handle, h->databuf, 2);
}
if (res != ERROR_OK)
return res;
return stlink_usb_error_check(h);
}
/** */
......@@ -2023,7 +2033,7 @@ static int stlink_usb_read_mem8(void *handle, uint32_t addr, uint16_t len,
if (read_len == 1)
read_len++;
res = stlink_usb_xfer(handle, h->databuf, read_len);
res = stlink_usb_xfer_noerrcheck(handle, h->databuf, read_len);
if (res != ERROR_OK)
return res;
......@@ -2057,7 +2067,7 @@ static int stlink_usb_write_mem8(void *handle, uint32_t addr, uint16_t len,
h_u16_to_le(h->cmdbuf+h->cmdidx, len);
h->cmdidx += 2;
res = stlink_usb_xfer(handle, buffer, len);
res = stlink_usb_xfer_noerrcheck(handle, buffer, len);
if (res != ERROR_OK)
return res;
......@@ -2092,7 +2102,7 @@ static int stlink_usb_read_mem16(void *handle, uint32_t addr, uint16_t len,
h_u16_to_le(h->cmdbuf+h->cmdidx, len);
h->cmdidx += 2;
res = stlink_usb_xfer(handle, h->databuf, len);
res = stlink_usb_xfer_noerrcheck(handle, h->databuf, len);
if (res != ERROR_OK)
return res;
......@@ -2129,7 +2139,7 @@ static int stlink_usb_write_mem16(void *handle, uint32_t addr, uint16_t len,
h_u16_to_le(h->cmdbuf+h->cmdidx, len);
h->cmdidx += 2;
res = stlink_usb_xfer(handle, buffer, len);
res = stlink_usb_xfer_noerrcheck(handle, buffer, len);
if (res != ERROR_OK)
return res;
......@@ -2161,7 +2171,7 @@ static int stlink_usb_read_mem32(void *handle, uint32_t addr, uint16_t len,
h_u16_to_le(h->cmdbuf+h->cmdidx, len);
h->cmdidx += 2;
res = stlink_usb_xfer(handle, h->databuf, len);
res = stlink_usb_xfer_noerrcheck(handle, h->databuf, len);
if (res != ERROR_OK)
return res;
......@@ -2195,7 +2205,7 @@ static int stlink_usb_write_mem32(void *handle, uint32_t addr, uint16_t len,
h_u16_to_le(h->cmdbuf+h->cmdidx, len);
h->cmdidx += 2;
res = stlink_usb_xfer(handle, buffer, len);
res = stlink_usb_xfer_noerrcheck(handle, buffer, len);
if (res != ERROR_OK)
return res;
......@@ -2516,7 +2526,7 @@ static int stlink_get_com_freq(void *handle, bool is_jtag, struct speed_map *map
h->cmdbuf[h->cmdidx++] = STLINK_APIV3_GET_COM_FREQ;
h->cmdbuf[h->cmdidx++] = is_jtag ? 1 : 0;
int res = stlink_usb_xfer(handle, h->databuf, 52);
int res = stlink_usb_xfer_errcheck(handle, h->databuf, 52);
int size = h->databuf[8];
......@@ -2553,7 +2563,7 @@ static int stlink_set_com_freq(void *handle, bool is_jtag, unsigned int frequenc
h_u32_to_le(&h->cmdbuf[4], frequency);
return stlink_usb_xfer(handle, h->databuf, 8);
return stlink_usb_xfer_errcheck(handle, h->databuf, 8);
}
static int stlink_speed_v3(void *handle, bool is_jtag, int khz, bool query)
......
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