+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define get_field(reg, mask) (((reg) & (mask)) / ((mask) & ~((mask) << 1)))
#define set_field(reg, mask, val) (((reg) & ~(mask)) | (((val) * ((mask) & ~((mask) << 1))) & (mask)))
+#define DTM_DMI_MAX_ADDRESS_LENGTH ((1<<DTM_DTMCS_ABITS_LENGTH)-1)
+#define DMI_SCAN_MAX_BIT_LENGTH (DTM_DMI_MAX_ADDRESS_LENGTH + DTM_DMI_DATA_LENGTH + DTM_DMI_OP_LENGTH)
+#define DMI_SCAN_BUF_SIZE (DIV_ROUND_UP(DMI_SCAN_MAX_BIT_LENGTH, 8))
+
static void dump_field(int idle, const struct scan_field *field);
struct riscv_batch *riscv_batch_alloc(struct target *target, size_t scans, size_t idle)
{
scans += 4;
struct riscv_batch *out = calloc(1, sizeof(*out));
+ if (!out)
+ goto error0;
out->target = target;
out->allocated_scans = scans;
out->idle_count = idle;
- out->data_out = malloc(sizeof(*out->data_out) * (scans) * sizeof(uint64_t));
- out->data_in = malloc(sizeof(*out->data_in) * (scans) * sizeof(uint64_t));
+ out->data_out = malloc(sizeof(*out->data_out) * (scans) * DMI_SCAN_BUF_SIZE);
+ if (!out->data_out)
+ goto error1;
+ out->data_in = malloc(sizeof(*out->data_in) * (scans) * DMI_SCAN_BUF_SIZE);
+ if (!out->data_in)
+ goto error2;
out->fields = malloc(sizeof(*out->fields) * (scans));
+ if (!out->fields)
+ goto error3;
+ if (bscan_tunnel_ir_width != 0) {
+ out->bscan_ctxt = malloc(sizeof(*out->bscan_ctxt) * (scans));
+ if (!out->bscan_ctxt)
+ goto error4;
+ }
out->last_scan = RISCV_SCAN_TYPE_INVALID;
out->read_keys = malloc(sizeof(*out->read_keys) * (scans));
+ if (!out->read_keys)
+ goto error5;
return out;
+
+error5:
+ free(out->bscan_ctxt);
+error4:
+ free(out->fields);
+error3:
+ free(out->data_in);
+error2:
+ free(out->data_out);
+error1:
+ free(out);
+error0:
+ return NULL;
}
void riscv_batch_free(struct riscv_batch *batch)
free(batch->data_in);
free(batch->data_out);
free(batch->fields);
+ free(batch->bscan_ctxt);
+ free(batch->read_keys);
free(batch);
}
riscv_batch_add_nop(batch);
for (size_t i = 0; i < batch->used_scans; ++i) {
- jtag_add_dr_scan(batch->target->tap, 1, batch->fields + i, TAP_IDLE);
+ if (bscan_tunnel_ir_width != 0)
+ riscv_add_bscan_tunneled_scan(batch->target, batch->fields+i, batch->bscan_ctxt+i);
+ else
+ jtag_add_dr_scan(batch->target->tap, 1, batch->fields + i, TAP_IDLE);
+
if (batch->idle_count > 0)
jtag_add_runtest(batch->idle_count, TAP_IDLE);
}
return ERROR_FAIL;
}
+ if (bscan_tunnel_ir_width != 0) {
+ /* need to right-shift "in" by one bit, because of clock skew between BSCAN TAP and DM TAP */
+ for (size_t i = 0; i < batch->used_scans; ++i)
+ buffer_shr((batch->fields + i)->in_value, DMI_SCAN_BUF_SIZE, 1);
+ }
+
for (size_t i = 0; i < batch->used_scans; ++i)
dump_field(batch->idle_count, batch->fields + i);
assert(batch->used_scans < batch->allocated_scans);
struct scan_field *field = batch->fields + batch->used_scans;
field->num_bits = riscv_dmi_write_u64_bits(batch->target);
- field->out_value = (void *)(batch->data_out + batch->used_scans * sizeof(uint64_t));
- field->in_value = (void *)(batch->data_in + batch->used_scans * sizeof(uint64_t));
+ field->out_value = (void *)(batch->data_out + batch->used_scans * DMI_SCAN_BUF_SIZE);
+ field->in_value = (void *)(batch->data_in + batch->used_scans * DMI_SCAN_BUF_SIZE);
riscv_fill_dmi_write_u64(batch->target, (char *)field->out_value, address, data);
riscv_fill_dmi_nop_u64(batch->target, (char *)field->in_value);
batch->last_scan = RISCV_SCAN_TYPE_WRITE;
assert(batch->used_scans < batch->allocated_scans);
struct scan_field *field = batch->fields + batch->used_scans;
field->num_bits = riscv_dmi_write_u64_bits(batch->target);
- field->out_value = (void *)(batch->data_out + batch->used_scans * sizeof(uint64_t));
- field->in_value = (void *)(batch->data_in + batch->used_scans * sizeof(uint64_t));
+ field->out_value = (void *)(batch->data_out + batch->used_scans * DMI_SCAN_BUF_SIZE);
+ field->in_value = (void *)(batch->data_in + batch->used_scans * DMI_SCAN_BUF_SIZE);
riscv_fill_dmi_read_u64(batch->target, (char *)field->out_value, address);
riscv_fill_dmi_nop_u64(batch->target, (char *)field->in_value);
batch->last_scan = RISCV_SCAN_TYPE_READ;
batch->used_scans++;
- /* FIXME We get the read response back on the next scan. For now I'm
- * just sticking a NOP in there, but this should be coalesced away. */
- riscv_batch_add_nop(batch);
-
- batch->read_keys[batch->read_keys_used] = batch->used_scans - 1;
+ batch->read_keys[batch->read_keys_used] = batch->used_scans;
return batch->read_keys_used++;
}
-uint64_t riscv_batch_get_dmi_read(struct riscv_batch *batch, size_t key)
+unsigned riscv_batch_get_dmi_read_op(struct riscv_batch *batch, size_t key)
{
assert(key < batch->read_keys_used);
size_t index = batch->read_keys[key];
assert(index <= batch->used_scans);
- uint8_t *base = batch->data_in + 8 * index;
- return base[0] |
- ((uint64_t) base[1]) << 8 |
- ((uint64_t) base[2]) << 16 |
- ((uint64_t) base[3]) << 24 |
- ((uint64_t) base[4]) << 32 |
- ((uint64_t) base[5]) << 40 |
- ((uint64_t) base[6]) << 48 |
- ((uint64_t) base[7]) << 56;
+ uint8_t *base = batch->data_in + DMI_SCAN_BUF_SIZE * index;
+ /* extract "op" field from the DMI read result */
+ return (unsigned)buf_get_u32(base, DTM_DMI_OP_OFFSET, DTM_DMI_OP_LENGTH);
+}
+
+uint32_t riscv_batch_get_dmi_read_data(struct riscv_batch *batch, size_t key)
+{
+ assert(key < batch->read_keys_used);
+ size_t index = batch->read_keys[key];
+ assert(index <= batch->used_scans);
+ uint8_t *base = batch->data_in + DMI_SCAN_BUF_SIZE * index;
+ /* extract "data" field from the DMI read result */
+ return buf_get_u32(base, DTM_DMI_DATA_OFFSET, DTM_DMI_DATA_LENGTH);
}
void riscv_batch_add_nop(struct riscv_batch *batch)
assert(batch->used_scans < batch->allocated_scans);
struct scan_field *field = batch->fields + batch->used_scans;
field->num_bits = riscv_dmi_write_u64_bits(batch->target);
- field->out_value = (void *)(batch->data_out + batch->used_scans * sizeof(uint64_t));
- field->in_value = (void *)(batch->data_in + batch->used_scans * sizeof(uint64_t));
+ field->out_value = (void *)(batch->data_out + batch->used_scans * DMI_SCAN_BUF_SIZE);
+ field->in_value = (void *)(batch->data_in + batch->used_scans * DMI_SCAN_BUF_SIZE);
riscv_fill_dmi_nop_u64(batch->target, (char *)field->out_value);
riscv_fill_dmi_nop_u64(batch->target, (char *)field->in_value);
batch->last_scan = RISCV_SCAN_TYPE_NOP;
log_printf_lf(LOG_LVL_DEBUG,
__FILE__, __LINE__, __PRETTY_FUNCTION__,
- "%db %di %s %08x @%02x -> %s %08x @%02x",
- field->num_bits, idle,
- op_string[out_op], out_data, out_address,
- status_string[in_op], in_data, in_address);
+ "%db %s %08x @%02x -> %s %08x @%02x; %di",
+ field->num_bits, op_string[out_op], out_data, out_address,
+ status_string[in_op], in_data, in_address, idle);
} else {
log_printf_lf(LOG_LVL_DEBUG,
- __FILE__, __LINE__, __PRETTY_FUNCTION__, "%db %di %s %08x @%02x -> ?",
- field->num_bits, idle, op_string[out_op], out_data, out_address);
+ __FILE__, __LINE__, __PRETTY_FUNCTION__, "%db %s %08x @%02x -> ?; %di",
+ field->num_bits, op_string[out_op], out_data, out_address, idle);
}
}
+
+size_t riscv_batch_available_scans(struct riscv_batch *batch)
+{
+ return batch->allocated_scans - batch->used_scans - 4;
+}
Code Review / openocd.git / blobdiff