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authorMika Westerberg <mika.westerberg@linux.intel.com>2021-01-08 17:25:39 +0300
committerMika Westerberg <mika.westerberg@linux.intel.com>2021-03-18 18:25:31 +0300
commit180b0689425c6fb2b35e69a3316ee38371a782df (patch)
treebbfac79fc08f79f6f5ce66a584ed6c1ae1a127af /drivers/thunderbolt/tb.h
parent5cfdd300b7b1e6f2390cf0d71040a8c26297bef7 (diff)
downloadlinux-180b0689425c6fb2b35e69a3316ee38371a782df.tar.xz
thunderbolt: Allow multiple DMA tunnels over a single XDomain connection
Currently we have had an artificial limitation of a single DMA tunnel per XDomain connection. However, hardware wise there is no such limit and software based connection manager can take advantage of all the DMA rings available on the host to establish tunnels. For this reason make the tb_xdomain_[enable|disable]_paths() to take the DMA ring and HopID as parameter instead of storing them in the struct tb_xdomain. We also add API functions to allocate input and output HopIDs of the XDomain connection that the service drivers can use instead of hard-coding. Also convert the two existing service drivers over to this API. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb.h')
-rw-r--r--drivers/thunderbolt/tb.h16
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
index 56f6a3f13678..9790e9f13d2b 100644
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -406,8 +406,12 @@ struct tb_cm_ops {
int (*challenge_switch_key)(struct tb *tb, struct tb_switch *sw,
const u8 *challenge, u8 *response);
int (*disconnect_pcie_paths)(struct tb *tb);
- int (*approve_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd);
- int (*disconnect_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd);
+ int (*approve_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd,
+ int transmit_path, int transmit_ring,
+ int receive_path, int receive_ring);
+ int (*disconnect_xdomain_paths)(struct tb *tb, struct tb_xdomain *xd,
+ int transmit_path, int transmit_ring,
+ int receive_path, int receive_ring);
int (*usb4_switch_op)(struct tb_switch *sw, u16 opcode, u32 *metadata,
u8 *status, const void *tx_data, size_t tx_data_len,
void *rx_data, size_t rx_data_len);
@@ -641,8 +645,12 @@ int tb_domain_approve_switch(struct tb *tb, struct tb_switch *sw);
int tb_domain_approve_switch_key(struct tb *tb, struct tb_switch *sw);
int tb_domain_challenge_switch_key(struct tb *tb, struct tb_switch *sw);
int tb_domain_disconnect_pcie_paths(struct tb *tb);
-int tb_domain_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd);
-int tb_domain_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd);
+int tb_domain_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
+ int transmit_path, int transmit_ring,
+ int receive_path, int receive_ring);
+int tb_domain_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
+ int transmit_path, int transmit_ring,
+ int receive_path, int receive_ring);
int tb_domain_disconnect_all_paths(struct tb *tb);
static inline struct tb *tb_domain_get(struct tb *tb)