diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firewire/fw-ohci.c | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c index 4789300b8241..46660ac0dac5 100644 --- a/drivers/firewire/fw-ohci.c +++ b/drivers/firewire/fw-ohci.c @@ -240,24 +240,32 @@ static char ohci_driver_name[] = KBUILD_MODNAME; #ifdef CONFIG_FIREWIRE_OHCI_DEBUG -#define OHCI_PARAM_DEBUG_IRQS 1 +#define OHCI_PARAM_DEBUG_AT_AR 1 #define OHCI_PARAM_DEBUG_SELFIDS 2 -#define OHCI_PARAM_DEBUG_AT_AR 4 +#define OHCI_PARAM_DEBUG_IRQS 4 +#define OHCI_PARAM_DEBUG_BUSRESETS 8 /* only effective before chip init */ static int param_debug; module_param_named(debug, param_debug, int, 0644); MODULE_PARM_DESC(debug, "Verbose logging (default = 0" - ", IRQs = " __stringify(OHCI_PARAM_DEBUG_IRQS) - ", self-IDs = " __stringify(OHCI_PARAM_DEBUG_SELFIDS) ", AT/AR events = " __stringify(OHCI_PARAM_DEBUG_AT_AR) + ", self-IDs = " __stringify(OHCI_PARAM_DEBUG_SELFIDS) + ", IRQs = " __stringify(OHCI_PARAM_DEBUG_IRQS) + ", busReset events = " __stringify(OHCI_PARAM_DEBUG_BUSRESETS) ", or a combination, or all = -1)"); static void log_irqs(u32 evt) { - if (likely(!(param_debug & OHCI_PARAM_DEBUG_IRQS))) + if (likely(!(param_debug & + (OHCI_PARAM_DEBUG_IRQS | OHCI_PARAM_DEBUG_BUSRESETS)))) + return; + + if (!(param_debug & OHCI_PARAM_DEBUG_IRQS) && + !(evt & OHCI1394_busReset)) return; - printk(KERN_DEBUG KBUILD_MODNAME ": IRQ %08x%s%s%s%s%s%s%s%s%s%s%s%s\n", + printk(KERN_DEBUG KBUILD_MODNAME ": IRQ " + "%08x%s%s%s%s%s%s%s%s%s%s%s%s%s\n", evt, evt & OHCI1394_selfIDComplete ? " selfID" : "", evt & OHCI1394_RQPkt ? " AR_req" : "", @@ -270,12 +278,13 @@ static void log_irqs(u32 evt) evt & OHCI1394_cycleTooLong ? " cycleTooLong" : "", evt & OHCI1394_cycle64Seconds ? " cycle64Seconds" : "", evt & OHCI1394_regAccessFail ? " regAccessFail" : "", + evt & OHCI1394_busReset ? " busReset" : "", evt & ~(OHCI1394_selfIDComplete | OHCI1394_RQPkt | OHCI1394_RSPkt | OHCI1394_reqTxComplete | OHCI1394_respTxComplete | OHCI1394_isochRx | OHCI1394_isochTx | OHCI1394_postedWriteErr | OHCI1394_cycleTooLong | OHCI1394_cycle64Seconds | - OHCI1394_regAccessFail) + OHCI1394_regAccessFail | OHCI1394_busReset) ? " ?" : ""); } @@ -1328,7 +1337,8 @@ static irqreturn_t irq_handler(int irq, void *data) if (!event || !~event) return IRQ_NONE; - reg_write(ohci, OHCI1394_IntEventClear, event); + /* busReset must not be cleared yet, see OHCI 1.1 clause 7.2.3.2 */ + reg_write(ohci, OHCI1394_IntEventClear, event & ~OHCI1394_busReset); log_irqs(event); if (event & OHCI1394_selfIDComplete) @@ -1467,6 +1477,8 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length) OHCI1394_postedWriteErr | OHCI1394_cycleTooLong | OHCI1394_cycle64Seconds | OHCI1394_regAccessFail | OHCI1394_masterIntEnable); + if (param_debug & OHCI_PARAM_DEBUG_BUSRESETS) + reg_write(ohci, OHCI1394_IntMaskSet, OHCI1394_busReset); /* Activate link_on bit and contender bit in our self ID packets.*/ if (ohci_update_phy_reg(card, 4, 0, |