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-rw-r--r--drivers/firewire/fw-ohci.c28
1 files changed, 20 insertions, 8 deletions
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c
index 4789300b824..46660ac0dac 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,