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由 Ben Hutchings 提交于
We currently assume that the timer quantum for Siena is 5 us, the same as for Falcon. This is not correct; timer ticks are generated on a rota which takes a minimum of 768 cycles (each event delivery or other timer change will delay it by 3 cycles). The timer quantum should be 6.144 or 3.072 us depending on whether turbo mode is active. Replace EFX_IRQ_MOD_RESOLUTION with a timer_quantum_ns field in struct efx_nic, initialised by the efx_nic_type::probe function. While we're at it, replace EFX_IRQ_MOD_MAX with a timer_period_max field in struct efx_nic_type. Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
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