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authorStefan Richter <stefanr@s5r6.in-berlin.de>2007-06-18 19:44:12 +0200
committerStefan Richter <stefanr@s5r6.in-berlin.de>2007-07-10 00:07:43 +0200
commit24d40125f1f59a6de9d9e6e046676bd60532596c (patch)
tree312fb396c7b5987313ce20ca033947faf54a273c /drivers/firewire/fw-topology.c
parent25d83f583b334ac671fbb905c97c374ba34a597a (diff)
downloadblackbird-op-linux-24d40125f1f59a6de9d9e6e046676bd60532596c.tar.gz
blackbird-op-linux-24d40125f1f59a6de9d9e6e046676bd60532596c.zip
firewire: optimize gap count with 1394b leaf nodes
Table-based gap count optimization cannot be used if 1394b repeater PHYs are present. But it does work with 1394b leaf nodes. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Diffstat (limited to 'drivers/firewire/fw-topology.c')
-rw-r--r--drivers/firewire/fw-topology.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/firewire/fw-topology.c b/drivers/firewire/fw-topology.c
index 4e358506d913..77e3f8276007 100644
--- a/drivers/firewire/fw-topology.c
+++ b/drivers/firewire/fw-topology.c
@@ -172,7 +172,8 @@ static struct fw_node *build_tree(struct fw_card *card,
struct list_head stack, *h;
u32 *next_sid, *end, q;
int i, port_count, child_port_count, phy_id, parent_count, stack_depth;
- int gap_count, topology_type;
+ int gap_count;
+ bool beta_repeaters_present;
local_node = NULL;
node = NULL;
@@ -182,7 +183,7 @@ static struct fw_node *build_tree(struct fw_card *card,
phy_id = 0;
irm_node = NULL;
gap_count = SELF_ID_GAP_COUNT(*sid);
- topology_type = 0;
+ beta_repeaters_present = false;
while (sid < end) {
next_sid = count_ports(sid, &port_count, &child_port_count);
@@ -224,11 +225,6 @@ static struct fw_node *build_tree(struct fw_card *card,
if (SELF_ID_CONTENDER(q))
irm_node = node;
- if (node->phy_speed == SCODE_BETA)
- topology_type |= FW_TOPOLOGY_B;
- else
- topology_type |= FW_TOPOLOGY_A;
-
parent_count = 0;
for (i = 0; i < port_count; i++) {
@@ -278,6 +274,10 @@ static struct fw_node *build_tree(struct fw_card *card,
list_add_tail(&node->link, &stack);
stack_depth += 1 - child_port_count;
+ if (node->phy_speed == SCODE_BETA &&
+ parent_count + child_port_count > 1)
+ beta_repeaters_present = true;
+
/*
* If all PHYs does not report the same gap count
* setting, we fall back to 63 which will force a gap
@@ -295,7 +295,7 @@ static struct fw_node *build_tree(struct fw_card *card,
card->root_node = node;
card->irm_node = irm_node;
card->gap_count = gap_count;
- card->topology_type = topology_type;
+ card->beta_repeaters_present = beta_repeaters_present;
return local_node;
}
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