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authorMika Westerberg <mika.westerberg@linux.intel.com>2020-11-10 11:34:07 +0300
committerMika Westerberg <mika.westerberg@linux.intel.com>2020-11-30 14:39:24 +0300
commit661b19473bf3ac0924560f0cbf84c15458b3c8de (patch)
tree32a36bb669b6a4bc3536f3386107a2853a01ec6e /drivers/thunderbolt/tb.h
parent463e48fa544826898791085508459de246fc4c09 (diff)
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thunderbolt: Perform USB4 router NVM upgrade in two phases
The currect code expects that the router returns back the status of the NVM authentication immediately. When tested against a real USB4 device what happens is that the router is reset and only after that the result is updated in the ROUTER_CS_26 register status field. This also seems to align better what the spec suggests. For this reason do the same what we already do with the Thunderbolt 3 devices and perform the NVM upgrade in two phases. First start the NVM_AUTH router operation and once the router is added back after the reset read the status in ROUTER_CS_26 and expose it to the userspace accordingly. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb.h')
-rw-r--r--drivers/thunderbolt/tb.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
index a21000649009..3885f2515aae 100644
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -972,6 +972,7 @@ int usb4_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf,
int usb4_switch_nvm_write(struct tb_switch *sw, unsigned int address,
const void *buf, size_t size);
int usb4_switch_nvm_authenticate(struct tb_switch *sw);
+int usb4_switch_nvm_authenticate_status(struct tb_switch *sw, u32 *status);
bool usb4_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in);
int usb4_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in);
int usb4_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in);