mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 05:48:40 +00:00
thunderbolt: Use dedicated flow control for DMA tunnels
The USB4 inter-domain service spec recommends using dedicated flow control scheme so update the driver accordingly. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
parent
46b494f286
commit
e5876559b5
1 changed files with 4 additions and 16 deletions
|
@ -794,24 +794,14 @@ static u32 tb_dma_credits(struct tb_port *nhi)
|
|||
return min(max_credits, 13U);
|
||||
}
|
||||
|
||||
static int tb_dma_activate(struct tb_tunnel *tunnel, bool active)
|
||||
{
|
||||
struct tb_port *nhi = tunnel->src_port;
|
||||
u32 credits;
|
||||
|
||||
credits = active ? tb_dma_credits(nhi) : 0;
|
||||
return tb_port_set_initial_credits(nhi, credits);
|
||||
}
|
||||
|
||||
static void tb_dma_init_path(struct tb_path *path, unsigned int isb,
|
||||
unsigned int efc, u32 credits)
|
||||
static void tb_dma_init_path(struct tb_path *path, unsigned int efc, u32 credits)
|
||||
{
|
||||
int i;
|
||||
|
||||
path->egress_fc_enable = efc;
|
||||
path->ingress_fc_enable = TB_PATH_ALL;
|
||||
path->egress_shared_buffer = TB_PATH_NONE;
|
||||
path->ingress_shared_buffer = isb;
|
||||
path->ingress_shared_buffer = TB_PATH_NONE;
|
||||
path->priority = 5;
|
||||
path->weight = 1;
|
||||
path->clear_fc = true;
|
||||
|
@ -856,7 +846,6 @@ struct tb_tunnel *tb_tunnel_alloc_dma(struct tb *tb, struct tb_port *nhi,
|
|||
if (!tunnel)
|
||||
return NULL;
|
||||
|
||||
tunnel->activate = tb_dma_activate;
|
||||
tunnel->src_port = nhi;
|
||||
tunnel->dst_port = dst;
|
||||
|
||||
|
@ -869,8 +858,7 @@ struct tb_tunnel *tb_tunnel_alloc_dma(struct tb *tb, struct tb_port *nhi,
|
|||
tb_tunnel_free(tunnel);
|
||||
return NULL;
|
||||
}
|
||||
tb_dma_init_path(path, TB_PATH_NONE, TB_PATH_SOURCE | TB_PATH_INTERNAL,
|
||||
credits);
|
||||
tb_dma_init_path(path, TB_PATH_SOURCE | TB_PATH_INTERNAL, credits);
|
||||
tunnel->paths[i++] = path;
|
||||
}
|
||||
|
||||
|
@ -881,7 +869,7 @@ struct tb_tunnel *tb_tunnel_alloc_dma(struct tb *tb, struct tb_port *nhi,
|
|||
tb_tunnel_free(tunnel);
|
||||
return NULL;
|
||||
}
|
||||
tb_dma_init_path(path, TB_PATH_SOURCE, TB_PATH_ALL, credits);
|
||||
tb_dma_init_path(path, TB_PATH_ALL, credits);
|
||||
tunnel->paths[i++] = path;
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in a new issue