diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_driver.c | 92 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_iba6110.c | 10 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_iba6120.c | 10 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_kernel.h | 19 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_sysfs.c | 19 |
5 files changed, 149 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c index e3a22320971..09759328658 100644 --- a/drivers/infiniband/hw/ipath/ipath_driver.c +++ b/drivers/infiniband/hw/ipath/ipath_driver.c @@ -1846,6 +1846,87 @@ void ipath_write_kreg_port(const struct ipath_devdata *dd, ipath_kreg regno, ipath_write_kreg(dd, where, value); } +/* + * Following deal with the "obviously simple" task of overriding the state + * of the LEDS, which normally indicate link physical and logical status. + * The complications arise in dealing with different hardware mappings + * and the board-dependent routine being called from interrupts. + * and then there's the requirement to _flash_ them. + */ +#define LED_OVER_FREQ_SHIFT 8 +#define LED_OVER_FREQ_MASK (0xFF<<LED_OVER_FREQ_SHIFT) +/* Below is "non-zero" to force override, but both actual LEDs are off */ +#define LED_OVER_BOTH_OFF (8) + +void ipath_run_led_override(unsigned long opaque) +{ + struct ipath_devdata *dd = (struct ipath_devdata *)opaque; + int timeoff; + int pidx; + u64 lstate, ltstate, val; + + if (!(dd->ipath_flags & IPATH_INITTED)) + return; + + pidx = dd->ipath_led_override_phase++ & 1; + dd->ipath_led_override = dd->ipath_led_override_vals[pidx]; + timeoff = dd->ipath_led_override_timeoff; + + /* + * below potentially restores the LED values per current status, + * should also possibly setup the traffic-blink register, + * but leave that to per-chip functions. + */ + val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_ibcstatus); + ltstate = (val >> INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) & + INFINIPATH_IBCS_LINKTRAININGSTATE_MASK; + lstate = (val >> INFINIPATH_IBCS_LINKSTATE_SHIFT) & + INFINIPATH_IBCS_LINKSTATE_MASK; + + dd->ipath_f_setextled(dd, lstate, ltstate); + mod_timer(&dd->ipath_led_override_timer, jiffies + timeoff); +} + +void ipath_set_led_override(struct ipath_devdata *dd, unsigned int val) +{ + int timeoff, freq; + + if (!(dd->ipath_flags & IPATH_INITTED)) + return; + + /* First check if we are blinking. If not, use 1HZ polling */ + timeoff = HZ; + freq = (val & LED_OVER_FREQ_MASK) >> LED_OVER_FREQ_SHIFT; + + if (freq) { + /* For blink, set each phase from one nybble of val */ + dd->ipath_led_override_vals[0] = val & 0xF; + dd->ipath_led_override_vals[1] = (val >> 4) & 0xF; + timeoff = (HZ << 4)/freq; + } else { + /* Non-blink set both phases the same. */ + dd->ipath_led_override_vals[0] = val & 0xF; + dd->ipath_led_override_vals[1] = val & 0xF; + } + dd->ipath_led_override_timeoff = timeoff; + + /* + * If the timer has not already been started, do so. Use a "quick" + * timeout so the function will be called soon, to look at our request. + */ + if (atomic_inc_return(&dd->ipath_led_override_timer_active) == 1) { + /* Need to start timer */ + init_timer(&dd->ipath_led_override_timer); + dd->ipath_led_override_timer.function = + ipath_run_led_override; + dd->ipath_led_override_timer.data = (unsigned long) dd; + dd->ipath_led_override_timer.expires = jiffies + 1; + add_timer(&dd->ipath_led_override_timer); + } else { + atomic_dec(&dd->ipath_led_override_timer_active); + } +} + /** * ipath_shutdown_device - shut down a device * @dd: the infinipath device @@ -1909,7 +1990,6 @@ void ipath_shutdown_device(struct ipath_devdata *dd) * Turn the LEDs off explictly for the same reason. */ dd->ipath_f_quiet_serdes(dd); - dd->ipath_f_setextled(dd, 0, 0); if (dd->ipath_stats_timer_active) { del_timer_sync(&dd->ipath_stats_timer); @@ -2085,6 +2165,16 @@ int ipath_reset_device(int unit) goto bail; } + if (atomic_read(&dd->ipath_led_override_timer_active)) { + /* Need to stop LED timer, _then_ shut off LEDs */ + del_timer_sync(&dd->ipath_led_override_timer); + atomic_set(&dd->ipath_led_override_timer_active, 0); + } + + /* Shut off LEDs after we are sure timer is not running */ + dd->ipath_led_override = LED_OVER_BOTH_OFF; + dd->ipath_f_setextled(dd, 0, 0); + dev_info(&dd->pcidev->dev, "Reset on unit %u requested\n", unit); if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT)) { diff --git a/drivers/infiniband/hw/ipath/ipath_iba6110.c b/drivers/infiniband/hw/ipath/ipath_iba6110.c index ba73dd0a06c..4372c6c50ff 100644 --- a/drivers/infiniband/hw/ipath/ipath_iba6110.c +++ b/drivers/infiniband/hw/ipath/ipath_iba6110.c @@ -1065,6 +1065,16 @@ static void ipath_setup_ht_setextled(struct ipath_devdata *dd, if (ipath_diag_inuse) return; + /* Allow override of LED display for, e.g. Locating system in rack */ + if (dd->ipath_led_override) { + ltst = (dd->ipath_led_override & IPATH_LED_PHYS) + ? INFINIPATH_IBCS_LT_STATE_LINKUP + : INFINIPATH_IBCS_LT_STATE_DISABLED; + lst = (dd->ipath_led_override & IPATH_LED_LOG) + ? INFINIPATH_IBCS_L_STATE_ACTIVE + : INFINIPATH_IBCS_L_STATE_DOWN; + } + /* * start by setting both LED control bits to off, then turn * on the appropriate bit(s). diff --git a/drivers/infiniband/hw/ipath/ipath_iba6120.c b/drivers/infiniband/hw/ipath/ipath_iba6120.c index 4e2e3dfeb2c..bcb70d67dbb 100644 --- a/drivers/infiniband/hw/ipath/ipath_iba6120.c +++ b/drivers/infiniband/hw/ipath/ipath_iba6120.c @@ -797,6 +797,16 @@ static void ipath_setup_pe_setextled(struct ipath_devdata *dd, u64 lst, if (ipath_diag_inuse) return; + /* Allow override of LED display for, e.g. Locating system in rack */ + if (dd->ipath_led_override) { + ltst = (dd->ipath_led_override & IPATH_LED_PHYS) + ? INFINIPATH_IBCS_LT_STATE_LINKUP + : INFINIPATH_IBCS_LT_STATE_DISABLED; + lst = (dd->ipath_led_override & IPATH_LED_LOG) + ? INFINIPATH_IBCS_L_STATE_ACTIVE + : INFINIPATH_IBCS_L_STATE_DOWN; + } + extctl = dd->ipath_extctrl & ~(INFINIPATH_EXTC_LED1PRIPORT_ON | INFINIPATH_EXTC_LED2PRIPORT_ON); diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h index 12194f3dd8c..2f39db7df31 100644 --- a/drivers/infiniband/hw/ipath/ipath_kernel.h +++ b/drivers/infiniband/hw/ipath/ipath_kernel.h @@ -575,6 +575,16 @@ struct ipath_devdata { u16 ipath_gpio_scl_num; u64 ipath_gpio_sda; u64 ipath_gpio_scl; + + /* used to override LED behavior */ + u8 ipath_led_override; /* Substituted for normal value, if non-zero */ + u16 ipath_led_override_timeoff; /* delta to next timer event */ + u8 ipath_led_override_vals[2]; /* Alternates per blink-frame */ + u8 ipath_led_override_phase; /* Just counts, LSB picks from vals[] */ + atomic_t ipath_led_override_timer_active; + /* Used to flash LEDs in override mode */ + struct timer_list ipath_led_override_timer; + }; /* Private data for file operations */ @@ -717,6 +727,15 @@ u64 ipath_snap_cntr(struct ipath_devdata *, ipath_creg); void ipath_disarm_senderrbufs(struct ipath_devdata *, int); /* + * Set LED override, only the two LSBs have "public" meaning, but + * any non-zero value substitutes them for the Link and LinkTrain + * LED states. + */ +#define IPATH_LED_PHYS 1 /* Physical (linktraining) GREEN LED */ +#define IPATH_LED_LOG 2 /* Logical (link) YELLOW LED */ +void ipath_set_led_override(struct ipath_devdata *dd, unsigned int val); + +/* * number of words used for protocol header if not set by ipath_userinit(); */ #define IPATH_DFLT_RCVHDRSIZE 9 diff --git a/drivers/infiniband/hw/ipath/ipath_sysfs.c b/drivers/infiniband/hw/ipath/ipath_sysfs.c index 4dc398d5e01..17ec1457172 100644 --- a/drivers/infiniband/hw/ipath/ipath_sysfs.c +++ b/drivers/infiniband/hw/ipath/ipath_sysfs.c @@ -596,6 +596,23 @@ bail: return ret; } +static ssize_t store_led_override(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct ipath_devdata *dd = dev_get_drvdata(dev); + int ret; + u16 val; + + ret = ipath_parse_ushort(buf, &val); + if (ret > 0) + ipath_set_led_override(dd, val); + else + ipath_dev_err(dd, "attempt to set invalid LED override\n"); + return ret; +} + static DRIVER_ATTR(num_units, S_IRUGO, show_num_units, NULL); static DRIVER_ATTR(version, S_IRUGO, show_version, NULL); @@ -625,6 +642,7 @@ static DEVICE_ATTR(status_str, S_IRUGO, show_status_str, NULL); static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL); static DEVICE_ATTR(unit, S_IRUGO, show_unit, NULL); static DEVICE_ATTR(rx_pol_inv, S_IWUSR, NULL, store_rx_pol_inv); +static DEVICE_ATTR(led_override, S_IWUSR, NULL, store_led_override); static struct attribute *dev_attributes[] = { &dev_attr_guid.attr, @@ -641,6 +659,7 @@ static struct attribute *dev_attributes[] = { &dev_attr_unit.attr, &dev_attr_enabled.attr, &dev_attr_rx_pol_inv.attr, + &dev_attr_led_override.attr, NULL }; |