---

yaml
---
r: 185096
b: refs/heads/master
c: 168cf9a
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4a9bde9b8ab55a2bb51b57cad215a97bcf80bae2
+refs/heads/master: 168cf9af699e87d5a6f44b684583714ecabb8e71

trunk/drivers/firewire/core-cdev.c

@@ -1018,7 +1018,7 @@ static int ioctl_get_cycle_timer(struct client *client, void *buffer)
 
 	local_irq_disable();
 
-	cycle_time = card->driver->get_bus_time(card);
+	cycle_time = card->driver->get_cycle_time(card);
 	do_gettimeofday(&tv);
 
 	local_irq_enable();

trunk/drivers/firewire/core-transaction.c

@@ -921,23 +921,15 @@ static void handle_registers(struct fw_card *card, struct fw_request *request,
 		void *payload, size_t length, void *callback_data)
 {
 	int reg = offset & ~CSR_REGISTER_BASE;
-	unsigned long long bus_time;
 	__be32 *data = payload;
 	int rcode = RCODE_COMPLETE;
 
 	switch (reg) {
 	case CSR_CYCLE_TIME:
-	case CSR_BUS_TIME:
-		if (!TCODE_IS_READ_REQUEST(tcode) || length != 4) {
-			rcode = RCODE_TYPE_ERROR;
-			break;
-		}
-
-		bus_time = card->driver->get_bus_time(card);
-		if (reg == CSR_CYCLE_TIME)
-			*data = cpu_to_be32(bus_time);
+		if (TCODE_IS_READ_REQUEST(tcode) && length == 4)
+			*data = cpu_to_be32(card->driver->get_cycle_time(card));
 		else
-			*data = cpu_to_be32(bus_time >> 25);
+			rcode = RCODE_TYPE_ERROR;
 		break;
 
 	case CSR_BROADCAST_CHANNEL:
@@ -968,6 +960,9 @@ static void handle_registers(struct fw_card *card, struct fw_request *request,
 	case CSR_BUSY_TIMEOUT:
 		/* FIXME: Implement this. */
 
+	case CSR_BUS_TIME:
+		/* Useless without initialization by the bus manager. */
+
 	default:
 		rcode = RCODE_ADDRESS_ERROR;
 		break;

trunk/drivers/firewire/core.h

@@ -70,7 +70,7 @@ struct fw_card_driver {
 	int (*enable_phys_dma)(struct fw_card *card,
 			       int node_id, int generation);
 
-	u64 (*get_bus_time)(struct fw_card *card);
+	u32 (*get_cycle_time)(struct fw_card *card);
 
 	struct fw_iso_context *
 	(*allocate_iso_context)(struct fw_card *card,

trunk/drivers/firewire/ohci.c

@@ -38,7 +38,6 @@
 #include <linux/spinlock.h>
 #include <linux/string.h>
 
-#include <asm/atomic.h>
 #include <asm/byteorder.h>
 #include <asm/page.h>
 #include <asm/system.h>
@@ -187,7 +186,6 @@ struct fw_ohci {
 	int node_id;
 	int generation;
 	int request_generation;	/* for timestamping incoming requests */
-	atomic_t bus_seconds;
 
 	bool use_dualbuffer;
 	bool old_uninorth;
@@ -276,7 +274,7 @@ static void log_irqs(u32 evt)
 	    !(evt & OHCI1394_busReset))
 		return;
 
-	fw_notify("IRQ %08x%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n", evt,
+	fw_notify("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"		: "",
 	    evt & OHCI1394_RSPkt		? " AR_resp"		: "",
@@ -286,16 +284,14 @@ static void log_irqs(u32 evt)
 	    evt & OHCI1394_isochTx		? " IT"			: "",
 	    evt & OHCI1394_postedWriteErr	? " postedWriteErr"	: "",
 	    evt & OHCI1394_cycleTooLong		? " cycleTooLong"	: "",
-	    evt & OHCI1394_cycle64Seconds	? " cycle64Seconds"	: "",
 	    evt & OHCI1394_cycleInconsistent	? " cycleInconsistent"	: "",
 	    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_cycleInconsistent |
+		    OHCI1394_cycleTooLong | OHCI1394_cycleInconsistent |
 		    OHCI1394_regAccessFail | OHCI1394_busReset)
 						? " ?"			: "");
 }
@@ -1385,7 +1381,7 @@ static void bus_reset_tasklet(unsigned long data)
 static irqreturn_t irq_handler(int irq, void *data)
 {
 	struct fw_ohci *ohci = data;
-	u32 event, iso_event, cycle_time;
+	u32 event, iso_event;
 	int i;
 
 	event = reg_read(ohci, OHCI1394_IntEventClear);
@@ -1455,12 +1451,6 @@ static irqreturn_t irq_handler(int irq, void *data)
 			fw_notify("isochronous cycle inconsistent\n");
 	}
 
-	if (event & OHCI1394_cycle64Seconds) {
-		cycle_time = reg_read(ohci, OHCI1394_IsochronousCycleTimer);
-		if ((cycle_time & 0x80000000) == 0)
-			atomic_inc(&ohci->bus_seconds);
-	}
-
 	return IRQ_HANDLED;
 }
 
@@ -1554,8 +1544,7 @@ static int ohci_enable(struct fw_card *card,
 		  OHCI1394_reqTxComplete | OHCI1394_respTxComplete |
 		  OHCI1394_isochRx | OHCI1394_isochTx |
 		  OHCI1394_postedWriteErr | OHCI1394_cycleTooLong |
-		  OHCI1394_cycleInconsistent |
-		  OHCI1394_cycle64Seconds | OHCI1394_regAccessFail |
+		  OHCI1394_cycleInconsistent | OHCI1394_regAccessFail |
 		  OHCI1394_masterIntEnable);
 	if (param_debug & OHCI_PARAM_DEBUG_BUSRESETS)
 		reg_write(ohci, OHCI1394_IntMaskSet, OHCI1394_busReset);
@@ -1821,7 +1810,7 @@ static u32 cycle_timer_ticks(u32 cycle_timer)
  * error.  (A PCI read should take at least 20 ticks of the 24.576 MHz timer to
  * execute, so we have enough precision to compute the ratio of the differences.)
  */
-static u64 ohci_get_bus_time(struct fw_card *card)
+static u32 ohci_get_cycle_time(struct fw_card *card)
 {
 	struct fw_ohci *ohci = fw_ohci(card);
 	u32 c0, c1, c2;
@@ -1849,7 +1838,7 @@ static u64 ohci_get_bus_time(struct fw_card *card)
 			 && i++ < 20);
 	}
 
-	return ((u64)atomic_read(&ohci->bus_seconds) << 32) | c2;
+	return c2;
 }
 
 static void copy_iso_headers(struct iso_context *ctx, void *p)
@@ -2426,7 +2415,7 @@ static const struct fw_card_driver ohci_driver = {
 	.send_response		= ohci_send_response,
 	.cancel_packet		= ohci_cancel_packet,
 	.enable_phys_dma	= ohci_enable_phys_dma,
-	.get_bus_time		= ohci_get_bus_time,
+	.get_cycle_time		= ohci_get_cycle_time,
 
 	.allocate_iso_context	= ohci_allocate_iso_context,
 	.free_iso_context	= ohci_free_iso_context,