service: attempt a reset when no SDB can be found. #50
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service/ioc-start.sh
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| synthesis="$(decode-reg build_info -q --slot ${devslot})" | ||
| if [ -z "$synthesis" ]; then | ||
| decode-reg reset --slot ${devslot} | ||
| synthesis="$(decode-reg build_info -q --slot ${devslot})" | ||
| fi | ||
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| case "$(decode-reg build_info -q --slot ${devslot})" in |
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Did you intend to use $synthesis in the case argument?
In some conditions, reading from BAR4 will return only 1s, so the SDB can't even be accessed in order to be decoded. For some of these situations, resetting the PCIe interface via BAR0 restores BAR4 functionality. The effects of this reset aren't fully understood, but, since any further steps to restore communication with the board would include removing the PCIe slot or restarting the board, any side-effects are considered benign.
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In some conditions, reading from BAR4 will return only 1s, so the SDB can't even be accessed in order to be decoded. For some of these situations, resetting the PCIe interface via BAR0 restores BAR4 functionality.
The effects of this reset aren't fully understood, but, since any further steps to restore communication with the board would include removing the PCIe slot or restarting the board, any side-effects are considered benign.