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path: root/drivers/ieee1394/ohci1394.c
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Diffstat (limited to 'drivers/ieee1394/ohci1394.c')
-rw-r--r--drivers/ieee1394/ohci1394.c69
1 files changed, 46 insertions, 23 deletions
diff --git a/drivers/ieee1394/ohci1394.c b/drivers/ieee1394/ohci1394.c
index 97ff364c0434..6cb0b586c297 100644
--- a/drivers/ieee1394/ohci1394.c
+++ b/drivers/ieee1394/ohci1394.c
@@ -539,10 +539,8 @@ static void ohci_initialize(struct ti_ohci *ohci)
initialize_dma_trm_ctx(&ohci->at_req_context);
initialize_dma_trm_ctx(&ohci->at_resp_context);
- /* Initialize IR Legacy DMA */
+ /* Initialize IR Legacy DMA channel mask */
ohci->ir_legacy_channels = 0;
- initialize_dma_rcv_ctx(&ohci->ir_legacy_context, 1);
- DBGMSG("ISO receive legacy context activated");
/*
* Accept AT requests from all nodes. This probably
@@ -1032,6 +1030,8 @@ static int ohci_devctl(struct hpsb_host *host, enum devctl_cmd cmd, int arg)
case ISO_LISTEN_CHANNEL:
{
u64 mask;
+ struct dma_rcv_ctx *d = &ohci->ir_legacy_context;
+ int ir_legacy_active;
if (arg<0 || arg>63) {
PRINT(KERN_ERR,
@@ -1052,9 +1052,37 @@ static int ohci_devctl(struct hpsb_host *host, enum devctl_cmd cmd, int arg)
return -EFAULT;
}
+ ir_legacy_active = ohci->ir_legacy_channels;
+
ohci->ISO_channel_usage |= mask;
ohci->ir_legacy_channels |= mask;
+ spin_unlock_irqrestore(&ohci->IR_channel_lock, flags);
+
+ if (!ir_legacy_active) {
+ if (ohci1394_register_iso_tasklet(ohci,
+ &ohci->ir_legacy_tasklet) < 0) {
+ PRINT(KERN_ERR, "No IR DMA context available");
+ return -EBUSY;
+ }
+
+ /* the IR context can be assigned to any DMA context
+ * by ohci1394_register_iso_tasklet */
+ d->ctx = ohci->ir_legacy_tasklet.context;
+ d->ctrlSet = OHCI1394_IsoRcvContextControlSet +
+ 32*d->ctx;
+ d->ctrlClear = OHCI1394_IsoRcvContextControlClear +
+ 32*d->ctx;
+ d->cmdPtr = OHCI1394_IsoRcvCommandPtr + 32*d->ctx;
+ d->ctxtMatch = OHCI1394_IsoRcvContextMatch + 32*d->ctx;
+
+ initialize_dma_rcv_ctx(&ohci->ir_legacy_context, 1);
+
+ PRINT(KERN_ERR, "IR legacy activated");
+ }
+
+ spin_lock_irqsave(&ohci->IR_channel_lock, flags);
+
if (arg>31)
reg_write(ohci, OHCI1394_IRMultiChanMaskHiSet,
1<<(arg-32));
@@ -1101,6 +1129,12 @@ static int ohci_devctl(struct hpsb_host *host, enum devctl_cmd cmd, int arg)
spin_unlock_irqrestore(&ohci->IR_channel_lock, flags);
DBGMSG("Listening disabled on channel %d", arg);
+
+ if (ohci->ir_legacy_channels == 0) {
+ stop_dma_rcv_ctx(&ohci->ir_legacy_context);
+ DBGMSG("ISO legacy receive context stopped");
+ }
+
break;
}
default:
@@ -1270,8 +1304,10 @@ static int ohci_iso_recv_init(struct hpsb_iso *iso)
OHCI_ISO_RECEIVE,
ohci_iso_recv_task, (unsigned long) iso);
- if (ohci1394_register_iso_tasklet(recv->ohci, &recv->task) < 0)
+ if (ohci1394_register_iso_tasklet(recv->ohci, &recv->task) < 0) {
+ ret = -EBUSY;
goto err;
+ }
recv->task_active = 1;
@@ -1896,8 +1932,10 @@ static int ohci_iso_xmit_init(struct hpsb_iso *iso)
ohci1394_init_iso_tasklet(&xmit->task, OHCI_ISO_TRANSMIT,
ohci_iso_xmit_task, (unsigned long) iso);
- if (ohci1394_register_iso_tasklet(xmit->ohci, &xmit->task) < 0)
+ if (ohci1394_register_iso_tasklet(xmit->ohci, &xmit->task) < 0) {
+ ret = -EBUSY;
goto err;
+ }
xmit->task_active = 1;
@@ -2691,7 +2729,7 @@ static void dma_rcv_tasklet (unsigned long data)
(cond_le32_to_cpu(d->spb[length/4-1], ohci->no_swap_incoming)>>16)&0x1f,
(cond_le32_to_cpu(d->spb[length/4-1], ohci->no_swap_incoming)>>21)&0x3,
tcode, length, d->ctx,
- (cond_le32_to_cpu(d->spb[length/4-1], ohci->no_swap_incoming)>>10)&0x3f);
+ (cond_le32_to_cpu(d->spb[0], ohci->no_swap_incoming)>>10)&0x3f);
ack = (((cond_le32_to_cpu(d->spb[length/4-1], ohci->no_swap_incoming)>>16)&0x1f)
== 0x11) ? 1 : 0;
@@ -2754,7 +2792,7 @@ static void dma_trm_tasklet (unsigned long data)
d->ctx);
else
DBGMSG("Packet sent to node %d tcode=0x%X tLabel="
- "0x%02X ack=0x%X spd=%d dataLength=%d ctx=%d",
+ "%d ack=0x%X spd=%d dataLength=%d ctx=%d",
(le32_to_cpu(d->prg_cpu[d->sent_ind]->data[1])>>16)&0x3f,
(le32_to_cpu(d->prg_cpu[d->sent_ind]->data[0])>>4)&0xf,
(le32_to_cpu(d->prg_cpu[d->sent_ind]->data[0])>>10)&0x3f,
@@ -2763,7 +2801,7 @@ static void dma_trm_tasklet (unsigned long data)
d->ctx);
else
DBGMSG("Packet sent to node %d tcode=0x%X tLabel="
- "0x%02X ack=0x%X spd=%d data=0x%08X ctx=%d",
+ "%d ack=0x%X spd=%d data=0x%08X ctx=%d",
(le32_to_cpu(d->prg_cpu[d->sent_ind]->data[1])
>>16)&0x3f,
(le32_to_cpu(d->prg_cpu[d->sent_ind]->data[0])
@@ -2999,20 +3037,6 @@ alloc_dma_rcv_ctx(struct ti_ohci *ohci, struct dma_rcv_ctx *d,
ohci1394_init_iso_tasklet(&ohci->ir_legacy_tasklet,
OHCI_ISO_MULTICHANNEL_RECEIVE,
dma_rcv_tasklet, (unsigned long) d);
- if (ohci1394_register_iso_tasklet(ohci,
- &ohci->ir_legacy_tasklet) < 0) {
- PRINT(KERN_ERR, "No IR DMA context available");
- free_dma_rcv_ctx(d);
- return -EBUSY;
- }
-
- /* the IR context can be assigned to any DMA context
- * by ohci1394_register_iso_tasklet */
- d->ctx = ohci->ir_legacy_tasklet.context;
- d->ctrlSet = OHCI1394_IsoRcvContextControlSet + 32*d->ctx;
- d->ctrlClear = OHCI1394_IsoRcvContextControlClear + 32*d->ctx;
- d->cmdPtr = OHCI1394_IsoRcvCommandPtr + 32*d->ctx;
- d->ctxtMatch = OHCI1394_IsoRcvContextMatch + 32*d->ctx;
} else {
d->ctrlSet = context_base + OHCI1394_ContextControlSet;
d->ctrlClear = context_base + OHCI1394_ContextControlClear;
@@ -3413,7 +3437,6 @@ static void ohci1394_pci_remove(struct pci_dev *pdev)
switch (ohci->init_state) {
case OHCI_INIT_DONE:
- stop_dma_rcv_ctx(&ohci->ir_legacy_context);
hpsb_remove_host(ohci->host);
/* Clear out BUS Options */
generated by cgit v1.2.3 (git 2.0.4) at 2024-12-28 20:31:07 +0000