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ADIv5: use new DAP ops for DP read/write 

Make ADIv5 internals use the two new transport-neutral calls for reading
and writing DP registers.  Also,  bugfix some of their call sites to
handle the fault returns, instead of ignoring them.

Remove the old JTAG-specific calls, using their code as the bodies
of the JTAG-specific implementation for the new methods.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
This commit is contained in:
David Brownell 2010-03-02 22:46:38 -08:00
parent 24b1426a72
commit 61ee632dbc
1 changed files with 38 additions and 32 deletions
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70
src/target/arm_adi_v5.c
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@ -350,25 +350,6 @@ static int jtagdp_transaction_endcheck(struct swjdp_common *swjdp)
* *
***************************************************************************/
/* FIXME remove dap_dp_{read,write}_reg() ... these should become the
* bodies of the JTAG implementations of dap_queue_dp_{read,write}() and
* callers should switch over to the transport-neutral calls.
*/
static int dap_dp_write_reg(struct swjdp_common *swjdp,
uint32_t value, uint8_t reg_addr)
{
return adi_jtag_scan_inout_check_u32(swjdp, JTAG_DP_DPACC,
reg_addr, DPAP_WRITE, value, NULL);
}
static int dap_dp_read_reg(struct swjdp_common *swjdp,
uint32_t *value, uint8_t reg_addr)
{
return adi_jtag_scan_inout_check_u32(swjdp, JTAG_DP_DPACC,
reg_addr, DPAP_READ, 0, value);
}
/**
* Select one of the APs connected to the specified DAP. The
* selection is implicitly used with future AP transactions.
@ -403,7 +384,7 @@ static int dap_ap_bankselect(struct swjdp_common *swjdp, uint32_t ap_reg)
{
swjdp->ap_bank_value = select;
select |= swjdp->apsel;
return dap_dp_write_reg(swjdp, select, DP_SELECT);
return dap_queue_dp_write(swjdp, DP_SELECT, select);
} else
return ERROR_OK;
}
@ -1207,13 +1188,15 @@ static int jtag_idcode_q_read(struct swjdp_common *dap,
static int jtag_dp_q_read(struct swjdp_common *dap, unsigned reg,
uint32_t *data)
{
return dap_dp_read_reg(dap, data, reg);
return adi_jtag_scan_inout_check_u32(dap, JTAG_DP_DPACC,
reg, DPAP_READ, 0, data);
}
static int jtag_dp_q_write(struct swjdp_common *dap, unsigned reg,
uint32_t data)
{
return dap_dp_write_reg(dap, data, reg);
return adi_jtag_scan_inout_check_u32(dap, JTAG_DP_DPACC,
reg, DPAP_WRITE, data, NULL);
}
static int jtag_ap_q_bankselect(struct swjdp_common *dap, unsigned reg)
@ -1307,14 +1290,27 @@ int ahbap_debugport_init(struct swjdp_common *swjdp)
dap_ap_select(swjdp, 0);
/* DP initialization */
dap_dp_read_reg(swjdp, &dummy, DP_CTRL_STAT);
dap_dp_write_reg(swjdp, SSTICKYERR, DP_CTRL_STAT);
dap_dp_read_reg(swjdp, &dummy, DP_CTRL_STAT);
retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &dummy);
if (retval != ERROR_OK)
return retval;
retval = dap_queue_dp_write(swjdp, DP_CTRL_STAT, SSTICKYERR);
if (retval != ERROR_OK)
return retval;
retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &dummy);
if (retval != ERROR_OK)
return retval;
swjdp->dp_ctrl_stat = CDBGPWRUPREQ | CSYSPWRUPREQ;
retval = dap_queue_dp_write(swjdp, DP_CTRL_STAT, swjdp->dp_ctrl_stat);
if (retval != ERROR_OK)
return retval;
dap_dp_write_reg(swjdp, swjdp->dp_ctrl_stat, DP_CTRL_STAT);
dap_dp_read_reg(swjdp, &ctrlstat, DP_CTRL_STAT);
retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &ctrlstat);
if (retval != ERROR_OK)
return retval;
if ((retval = dap_run(swjdp)) != ERROR_OK)
return retval;
@ -1322,7 +1318,9 @@ int ahbap_debugport_init(struct swjdp_common *swjdp)
while (!(ctrlstat & CDBGPWRUPACK) && (cnt++ < 10))
{
LOG_DEBUG("DAP: wait CDBGPWRUPACK");
dap_dp_read_reg(swjdp, &ctrlstat, DP_CTRL_STAT);
retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &ctrlstat);
if (retval != ERROR_OK)
return retval;
if ((retval = dap_run(swjdp)) != ERROR_OK)
return retval;
alive_sleep(10);
@ -1331,17 +1329,25 @@ int ahbap_debugport_init(struct swjdp_common *swjdp)
while (!(ctrlstat & CSYSPWRUPACK) && (cnt++ < 10))
{
LOG_DEBUG("DAP: wait CSYSPWRUPACK");
dap_dp_read_reg(swjdp, &ctrlstat, DP_CTRL_STAT);
retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &ctrlstat);
if (retval != ERROR_OK)
return retval;
if ((retval = dap_run(swjdp)) != ERROR_OK)
return retval;
alive_sleep(10);
}
dap_dp_read_reg(swjdp, &dummy, DP_CTRL_STAT);
retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &dummy);
if (retval != ERROR_OK)
return retval;
/* With debug power on we can activate OVERRUN checking */
swjdp->dp_ctrl_stat = CDBGPWRUPREQ | CSYSPWRUPREQ | CORUNDETECT;
dap_dp_write_reg(swjdp, swjdp->dp_ctrl_stat, DP_CTRL_STAT);
dap_dp_read_reg(swjdp, &dummy, DP_CTRL_STAT);
retval = dap_queue_dp_write(swjdp, DP_CTRL_STAT, swjdp->dp_ctrl_stat);
if (retval != ERROR_OK)
return retval;
retval = dap_queue_dp_read(swjdp, DP_CTRL_STAT, &dummy);
if (retval != ERROR_OK)
return retval;
/*
* REVISIT this isn't actually *initializing* anything in an AP,