jtag/drivers/libusb1_common: avoid device reset when reselecting configuration

[fw/openocd] / src / target / adi_v5_jtag.c

diff --git a/src/target/adi_v5_jtag.c b/src/target/adi_v5_jtag.c
index 9f37bd553d841080b8c416eceed2c553d2f1e524..1100b17d21cfa761de0476f99dbff85fb6b73b60 100644 (file)
--- a/src/target/adi_v5_jtag.c
+++ b/src/target/adi_v5_jtag.c
@@ -23,7 +23,7 @@
  *   You should have received a copy of the GNU General Public License
  *   along with this program; if not, write to the
  *   Free Software Foundation, Inc.,
- *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  ***************************************************************************/
 
 /**
@@ -50,6 +50,8 @@
 #define JTAG_ACK_OK_FAULT      0x2
 #define JTAG_ACK_WAIT          0x1
 
+static int jtag_ap_q_abort(struct adiv5_dap *dap, uint8_t *ack);
+
 /***************************************************************************
  *
  * DPACC and APACC scanchain access through JTAG-DP (or SWJ-DP)
@@ -75,10 +77,7 @@
  * @param ack points to where the three bit JTAG_ACK_* code will be stored
  */
 
-/* FIXME don't export ... this is a temporary workaround for the
- * mem_ap_read_buf_u32() mess, until it's no longer JTAG-specific.
- */
-int adi_jtag_dp_scan(struct adiv5_dap *dap,
+static int adi_jtag_dp_scan(struct adiv5_dap *dap,
                uint8_t instr, uint8_t reg_addr, uint8_t RnW,
                uint8_t *outvalue, uint8_t *invalue, uint8_t *ack)
 {
@@ -235,12 +234,16 @@ static int jtagdp_transaction_endcheck(struct adiv5_dap *dap)
                while (dap->ack != JTAG_ACK_OK_FAULT) {
                        if (dap->ack == JTAG_ACK_WAIT) {
                                if ((timeval_ms()-then) > 1000) {
-                                       /* NOTE:  this would be a good spot
-                                        * to use JTAG_DP_ABORT.
-                                        */
                                        LOG_WARNING("Timeout (1000ms) waiting "
                                                "for ACK=OK/FAULT "
-                                               "in JTAG-DP transaction");
+                                               "in JTAG-DP transaction - aborting");
+
+                                       uint8_t ack;
+                                       int abort_ret = jtag_ap_q_abort(dap, &ack);
+
+                                       if (abort_ret != 0)
+                                               LOG_WARNING("Abort failed : return=%d ack=%d", abort_ret, ack);
+
                                        return ERROR_JTAG_DEVICE_ERROR;
                                }
                        } else {
@@ -339,30 +342,6 @@ static int jtagdp_transaction_endcheck(struct adiv5_dap *dap)
 
 /*--------------------------------------------------------------------------*/
 
-static int jtag_idcode_q_read(struct adiv5_dap *dap,
-               uint8_t *ack, uint32_t *data)
-{
-       struct arm_jtag *jtag_info = dap->jtag_info;
-       int retval;
-       struct scan_field fields[1];
-
-       /* This is a standard JTAG operation -- no DAP tweakage */
-       retval = arm_jtag_set_instr(jtag_info, JTAG_DP_IDCODE, NULL, TAP_IDLE);
-       if (retval != ERROR_OK)
-               return retval;
-
-       fields[0].num_bits = 32;
-       fields[0].out_value = NULL;
-       fields[0].in_value = (void *) data;
-
-       jtag_add_dr_scan(jtag_info->tap, 1, fields, TAP_IDLE);
-
-       jtag_add_callback(arm_le_to_h_u32,
-                       (jtag_callback_data_t) data);
-
-       return ERROR_OK;
-}
-
 static int jtag_dp_q_read(struct adiv5_dap *dap, unsigned reg,
                uint32_t *data)
 {
@@ -433,13 +412,12 @@ static int jtag_dp_run(struct adiv5_dap *dap)
  * part of DAP setup
 */
 const struct dap_ops jtag_dp_ops = {
-       .queue_idcode_read =    jtag_idcode_q_read,
-       .queue_dp_read =        jtag_dp_q_read,
-       .queue_dp_write =       jtag_dp_q_write,
-       .queue_ap_read =        jtag_ap_q_read,
-       .queue_ap_write =       jtag_ap_q_write,
-       .queue_ap_abort =       jtag_ap_q_abort,
-       .run =                  jtag_dp_run,
+       .queue_dp_read       = jtag_dp_q_read,
+       .queue_dp_write      = jtag_dp_q_write,
+       .queue_ap_read       = jtag_ap_q_read,
+       .queue_ap_write      = jtag_ap_q_write,
+       .queue_ap_abort      = jtag_ap_q_abort,
+       .run                 = jtag_dp_run,
 };