ea9ee35583
This adds the ability for a guest OS to send Set / Get Feature, Temperature Threshold commands. The implementation assumes a constant temperature and will generate an Asynchronous Event Notification if the specified threshold is above/below this value. Although the specification allows 9 temperature values, this implementation only implements the Composite Temperature. While in the neighborhood, move the clear of the CSTS register in the reset function after all other cleanup. This avoids a race with the guest thinking the reset is complete (i.e. CSTS.RDY = 0) before the NVMe emulation is actually complete with the reset. Fixes UNH IOL 16.0 Test 1.7, cases 1, 2, and 4. Tested by: jason@tubnor.net MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D33572
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