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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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staging/rdma/hfi1: Implement LED beaconing for maintenance
This patch implements LED beaconing for maintenance. A MAD packet with the LEDInfo attribute set to 1 will enable LED beaconing with a duty cycle of 2s on and 1.5s off. A MAD packet with the LEDInfo attribute set to 0 will disable beaconing and return the LED to normal operation. Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Easwar Hariharan <easwar.hariharan@intel.com> Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Signed-off-by: Jubin John <jubin.john@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Easwar Hariharan
Doug Ledford
parent
7b0b01aa8f
commit
91ab4ed334
@ -5,7 +5,7 @@
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2015 Intel Corporation.
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* Copyright(c) 2015, 2016 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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@ -18,7 +18,7 @@
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*
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* BSD LICENSE
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*
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* Copyright(c) 2015 Intel Corporation.
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* Copyright(c) 2015, 2016 Intel Corporation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -1172,63 +1172,64 @@ int hfi1_set_lid(struct hfi1_pportdata *ppd, u32 lid, u8 lmc)
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return 0;
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}
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/*
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* Following deal with the "obviously simple" task of overriding the state
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* of the LEDs, which normally indicate link physical and logical status.
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* The complications arise in dealing with different hardware mappings
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* and the board-dependent routine being called from interrupts.
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* and then there's the requirement to _flash_ them.
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*/
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#define LED_OVER_FREQ_SHIFT 8
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#define LED_OVER_FREQ_MASK (0xFF<<LED_OVER_FREQ_SHIFT)
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/* Below is "non-zero" to force override, but both actual LEDs are off */
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#define LED_OVER_BOTH_OFF (8)
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void shutdown_led_override(struct hfi1_pportdata *ppd)
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{
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struct hfi1_devdata *dd = ppd->dd;
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if (atomic_read(&ppd->led_override_timer_active)) {
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del_timer_sync(&ppd->led_override_timer);
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atomic_set(&ppd->led_override_timer_active, 0);
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}
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/* Shut off LEDs after we are sure timer is not running */
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setextled(dd, 0);
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}
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static void run_led_override(unsigned long opaque)
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{
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struct hfi1_pportdata *ppd = (struct hfi1_pportdata *)opaque;
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struct hfi1_devdata *dd = ppd->dd;
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int timeoff;
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int ph_idx;
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unsigned long timeout;
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int phase_idx;
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if (!(dd->flags & HFI1_INITTED))
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return;
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ph_idx = ppd->led_override_phase++ & 1;
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ppd->led_override = ppd->led_override_vals[ph_idx];
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timeoff = ppd->led_override_timeoff;
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phase_idx = ppd->led_override_phase & 1;
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setextled(dd, phase_idx);
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timeout = ppd->led_override_vals[phase_idx];
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/* Set up for next phase */
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ppd->led_override_phase = !ppd->led_override_phase;
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/*
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* don't re-fire the timer if user asked for it to be off; we let
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* it fire one more time after they turn it off to simplify
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*/
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if (ppd->led_override_vals[0] || ppd->led_override_vals[1])
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mod_timer(&ppd->led_override_timer, jiffies + timeoff);
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mod_timer(&ppd->led_override_timer, jiffies + timeout);
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else
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/* Hand control of the LED to the DC for normal operation */
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write_csr(dd, DCC_CFG_LED_CNTRL, 0);
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}
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void hfi1_set_led_override(struct hfi1_pportdata *ppd, unsigned int val)
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/*
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* To have the LED blink in a particular pattern, provide timeon and timeoff
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* in milliseconds. To turn off custom blinking and return to normal operation,
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* provide timeon = timeoff = 0.
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*/
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void hfi1_set_led_override(struct hfi1_pportdata *ppd, unsigned int timeon,
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unsigned int timeoff)
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{
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struct hfi1_devdata *dd = ppd->dd;
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int timeoff, freq;
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if (!(dd->flags & HFI1_INITTED))
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return;
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/* First check if we are blinking. If not, use 1HZ polling */
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timeoff = HZ;
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freq = (val & LED_OVER_FREQ_MASK) >> LED_OVER_FREQ_SHIFT;
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if (freq) {
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/* For blink, set each phase from one nybble of val */
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ppd->led_override_vals[0] = val & 0xF;
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ppd->led_override_vals[1] = (val >> 4) & 0xF;
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timeoff = (HZ << 4)/freq;
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} else {
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/* Non-blink set both phases the same. */
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ppd->led_override_vals[0] = val & 0xF;
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ppd->led_override_vals[1] = val & 0xF;
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}
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ppd->led_override_timeoff = timeoff;
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/* Convert to jiffies for direct use in timer */
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ppd->led_override_vals[0] = msecs_to_jiffies(timeoff);
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ppd->led_override_vals[1] = msecs_to_jiffies(timeon);
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ppd->led_override_phase = 1; /* Arbitrarily start from LED on phase */
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/*
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* If the timer has not already been started, do so. Use a "quick"
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@ -1293,14 +1294,8 @@ int hfi1_reset_device(int unit)
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for (pidx = 0; pidx < dd->num_pports; ++pidx) {
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ppd = dd->pport + pidx;
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if (atomic_read(&ppd->led_override_timer_active)) {
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/* Need to stop LED timer, _then_ shut off LEDs */
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del_timer_sync(&ppd->led_override_timer);
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atomic_set(&ppd->led_override_timer_active, 0);
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}
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/* Shut off LEDs after we are sure timer is not running */
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ppd->led_override = LED_OVER_BOTH_OFF;
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shutdown_led_override(ppd);
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}
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if (dd->flags & HFI1_HAS_SEND_DMA)
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sdma_exit(dd);
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@ -7,7 +7,7 @@
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2015 Intel Corporation.
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* Copyright(c) 2015, 2016 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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@ -20,7 +20,7 @@
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*
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* BSD LICENSE
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*
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* Copyright(c) 2015 Intel Corporation.
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* Copyright(c) 2015, 2016 Intel Corporation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -669,14 +669,17 @@ struct hfi1_pportdata {
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u8 overrun_threshold;
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u8 phy_error_threshold;
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/* used to override LED behavior */
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u8 led_override; /* Substituted for normal value, if non-zero */
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u16 led_override_timeoff; /* delta to next timer event */
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u8 led_override_vals[2]; /* Alternates per blink-frame */
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u8 led_override_phase; /* Just counts, LSB picks from vals[] */
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/* Used to override LED behavior for things like maintenance beaconing*/
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/*
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* Alternates per phase of blink
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* [0] holds LED off duration, [1] holds LED on duration
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*/
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unsigned long led_override_vals[2];
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u8 led_override_phase; /* LSB picks from vals[] */
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atomic_t led_override_timer_active;
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/* Used to flash LEDs in override mode */
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struct timer_list led_override_timer;
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u32 sm_trap_qp;
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u32 sa_qp;
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@ -1599,14 +1602,14 @@ void hfi1_free_devdata(struct hfi1_devdata *);
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void cc_state_reclaim(struct rcu_head *rcu);
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struct hfi1_devdata *hfi1_alloc_devdata(struct pci_dev *pdev, size_t extra);
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void hfi1_set_led_override(struct hfi1_pportdata *ppd, unsigned int timeon,
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unsigned int timeoff);
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/*
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* Set LED override, only the two LSBs have "public" meaning, but
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* any non-zero value substitutes them for the Link and LinkTrain
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* LED states.
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* Only to be used for driver unload or device reset where we cannot allow
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* the timer to fire even the one extra time, else use hfi1_set_led_override
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* with timeon = timeoff = 0
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*/
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#define HFI1_LED_PHYS 1 /* Physical (linktraining) GREEN LED */
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#define HFI1_LED_LOG 2 /* Logical (link) YELLOW LED */
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void hfi1_set_led_override(struct hfi1_pportdata *ppd, unsigned int val);
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void shutdown_led_override(struct hfi1_pportdata *ppd);
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#define HFI1_CREDIT_RETURN_RATE (100)
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@ -5,7 +5,7 @@
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2015 Intel Corporation.
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* Copyright(c) 2015, 2016 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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@ -18,7 +18,7 @@
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*
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* BSD LICENSE
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*
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* Copyright(c) 2015 Intel Corporation.
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* Copyright(c) 2015, 2016 Intel Corporation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -908,6 +908,8 @@ static void shutdown_device(struct hfi1_devdata *dd)
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/* disable the send device */
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pio_send_control(dd, PSC_GLOBAL_DISABLE);
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shutdown_led_override(ppd);
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/*
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* Clear SerdesEnable.
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* We can't count on interrupts since we are stopping.
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@ -5,7 +5,7 @@
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2015 Intel Corporation.
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* Copyright(c) 2015, 2016 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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@ -18,7 +18,7 @@
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*
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* BSD LICENSE
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*
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* Copyright(c) 2015 Intel Corporation.
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* Copyright(c) 2015, 2016 Intel Corporation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -3449,7 +3449,10 @@ static int __subn_set_opa_led_info(struct opa_smp *smp, u32 am, u8 *data,
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return reply((struct ib_mad_hdr *)smp);
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}
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setextled(dd, on);
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if (on)
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hfi1_set_led_override(dd->pport, 2000, 1500);
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else
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hfi1_set_led_override(dd->pport, 0, 0);
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return __subn_get_opa_led_info(smp, am, data, ibdev, port, resp_len);
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}
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