/*
* Below is portion of IBA7220-specific bringup_serdes() that actually
* deals with registers and memory within the SerDes itself.
* Post IB uC code version 1.32.17, was_reset being 1 is not really
* informative, so we double-check.
*/
int qib_sd7220_init(struct qib_devdata *dd)
{
const struct firmware *fw;
int ret = 1; /* default to failure */
int first_reset, was_reset;
/* SERDES MPU reset recorded in D0 */
was_reset = (qib_read_kreg64(dd, kr_ibserdesctrl) & 1);
if (!was_reset) {
/* entered with reset not asserted, we need to do it */
qib_ibsd_reset(dd, 1);
qib_sd_trimdone_monitor(dd, "Driver-reload");
}
ret = request_firmware(&fw, SD7220_FW_NAME, &dd->pcidev->dev);
if (ret)
goto done;
/* Substitute our deduced value for was_reset */
ret = qib_ibsd_ucode_loaded(dd->pport, fw);
if (ret < 0)
goto bail;
first_reset = !ret; /* First reset if IBSD uCode not yet loaded */
/*
* Alter some regs per vendor latest doc, reset-defaults
* are not right for IB.
*/
ret = qib_sd_early(dd);
if (ret < 0) {
qib_dev_err(dd, "Failed to set IB SERDES early defaults\n");
goto bail;
}
/*
* Set DAC manual trim IB.
* We only do this once after chip has been reset (usually
* same as once per system boot).
*/
if (first_reset) {
ret = qib_sd_dactrim(dd);
if (ret < 0) {
qib_dev_err(dd, "Failed IB SERDES DAC trim\n");
goto bail;
}
}
/*
* Set various registers (DDS and RXEQ) that will be
* controlled by IBC (in 1.2 mode) to reasonable preset values
* Calling the "internal" version avoids the "check for needed"
* and "trimdone monitor" that might be counter-productive.
*/
ret = qib_internal_presets(dd);
if (ret < 0) {
qib_dev_err(dd, "Failed to set IB SERDES presets\n");
goto bail;
}
ret = qib_sd_trimself(dd, 0x80);
if (ret < 0) {
qib_dev_err(dd, "Failed to set IB SERDES TRIMSELF\n");
goto bail;
}
/* Load image, then try to verify */
ret = 0; /* Assume success */
if (first_reset) {
int vfy;
int trim_done;
ret = qib_sd7220_ib_load(dd, fw);
if (ret < 0) {
qib_dev_err(dd, "Failed to load IB SERDES image\n");
goto bail;
} else {
/* Loaded image, try to verify */
vfy = qib_sd7220_ib_vfy(dd, fw);
if (vfy != ret) {
qib_dev_err(dd, "SERDES PRAM VFY failed\n");
goto bail;
} /* end if verified */
} /* end if loaded */
/*
* Loaded and verified. Almost good...
* hold "success" in ret
*/
ret = 0;
/*
* Prev steps all worked, continue bringup
* De-assert RESET to uC, only in first reset, to allow
* trimming.
*
* Since our default setup sets START_EQ1 to
* PRESET, we need to clear that for this very first run.
*/
ret = ibsd_mod_allchnls(dd, START_EQ1(0), 0, 0x38);
if (ret < 0) {
qib_dev_err(dd, "Failed clearing START_EQ1\n");
goto bail;
}
qib_ibsd_reset(dd, 0);
/*
* If this is not the first reset, trimdone should be set
* already. We may need to check about this.
*/
trim_done = qib_sd_trimdone_poll(dd);
/*
* Whether or not trimdone succeeded, we need to put the
* uC back into reset to avoid a possible fight with the
* IBC state-machine.
*/
qib_ibsd_reset(dd, 1);
if (!trim_done) {
qib_dev_err(dd, "No TRIMDONE seen\n");
goto bail;
}
/*
* DEBUG: check each time we reset if trimdone bits have
* gotten cleared, and re-set them.
*/
qib_sd_trimdone_monitor(dd, "First-reset");
/* Remember so we do not re-do the load, dactrim, etc. */
dd->cspec->serdes_first_init_done = 1;
}
/*
* setup for channel training and load values for
* RxEq and DDS in tables used by IBC in IB1.2 mode
*/
ret = 0;
if (qib_sd_setvals(dd) >= 0)
goto done;
bail:
ret = 1;
done:
/* start relock timer regardless, but start at 1 second */
set_7220_relock_poll(dd, -1);
release_firmware(fw);
return ret;
}
int qib_sd7220_init(struct qib_devdata *dd)
{
const struct firmware *fw;
int ret = 1;
int first_reset, was_reset;
was_reset = (qib_read_kreg64(dd, kr_ibserdesctrl) & 1);
if (!was_reset) {
qib_ibsd_reset(dd, 1);
qib_sd_trimdone_monitor(dd, "Driver-reload");
}
ret = request_firmware(&fw, SD7220_FW_NAME, &dd->pcidev->dev);
if (ret) {
qib_dev_err(dd, "Failed to load IB SERDES image\n");
goto done;
}
ret = qib_ibsd_ucode_loaded(dd->pport, fw);
if (ret < 0)
goto bail;
first_reset = !ret;
ret = qib_sd_early(dd);
if (ret < 0) {
qib_dev_err(dd, "Failed to set IB SERDES early defaults\n");
goto bail;
}
if (first_reset) {
ret = qib_sd_dactrim(dd);
if (ret < 0) {
qib_dev_err(dd, "Failed IB SERDES DAC trim\n");
goto bail;
}
}
ret = qib_internal_presets(dd);
if (ret < 0) {
qib_dev_err(dd, "Failed to set IB SERDES presets\n");
goto bail;
}
ret = qib_sd_trimself(dd, 0x80);
if (ret < 0) {
qib_dev_err(dd, "Failed to set IB SERDES TRIMSELF\n");
goto bail;
}
ret = 0;
if (first_reset) {
int vfy;
int trim_done;
ret = qib_sd7220_ib_load(dd, fw);
if (ret < 0) {
qib_dev_err(dd, "Failed to load IB SERDES image\n");
goto bail;
} else {
vfy = qib_sd7220_ib_vfy(dd, fw);
if (vfy != ret) {
qib_dev_err(dd, "SERDES PRAM VFY failed\n");
goto bail;
}
}
ret = 0;
ret = ibsd_mod_allchnls(dd, START_EQ1(0), 0, 0x38);
if (ret < 0) {
qib_dev_err(dd, "Failed clearing START_EQ1\n");
goto bail;
}
qib_ibsd_reset(dd, 0);
trim_done = qib_sd_trimdone_poll(dd);
qib_ibsd_reset(dd, 1);
if (!trim_done) {
qib_dev_err(dd, "No TRIMDONE seen\n");
goto bail;
}
qib_sd_trimdone_monitor(dd, "First-reset");
dd->cspec->serdes_first_init_done = 1;
}
ret = 0;
if (qib_sd_setvals(dd) >= 0)
goto done;
bail:
ret = 1;
done:
set_7220_relock_poll(dd, -1);
release_firmware(fw);
return ret;
}
