firewire: fw-ohci: add option for remote debugging

This way firewire-ohci can be used for remote debugging like ohci1394.
Version with amendment from Fri, 11 Apr 2008 00:08:08 +0200.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Bernhard Kaindl <bk@suse.de>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c
index 07d6053ff57e..5da7c6715e1e 100644
--- a/drivers/firewire/fw-ohci.c
+++ b/drivers/firewire/fw-ohci.c
@@ -1097,6 +1097,11 @@ static void bus_reset_tasklet(unsigned long data)
                 reg_write(ohci, OHCI1394_ConfigROMhdr, ohci->next_header);
         }
 
+#ifdef CONFIG_FIREWIRE_OHCI_REMOTE_DMA
+        reg_write(ohci, OHCI1394_PhyReqFilterHiSet, ~0);
+        reg_write(ohci, OHCI1394_PhyReqFilterLoSet, ~0);
+#endif
+
         spin_unlock_irqrestore(&ohci->lock, flags);
 
         if (free_rom)
@@ -1435,6 +1440,9 @@ static int ohci_cancel_packet(struct fw_card *card, struct fw_packet *packet)
 static int
 ohci_enable_phys_dma(struct fw_card *card, int node_id, int generation)
 {
+#ifdef CONFIG_FIREWIRE_OHCI_REMOTE_DMA
+        return 0;
+#else
         struct fw_ohci *ohci = fw_ohci(card);
         unsigned long flags;
         int n, retval = 0;
@@ -1466,6 +1474,7 @@ ohci_enable_phys_dma(struct fw_card *card, int node_id, int generation)
  out:
         spin_unlock_irqrestore(&ohci->lock, flags);
         return retval;
+#endif /* CONFIG_FIREWIRE_OHCI_REMOTE_DMA */
 }
 
 static u64