diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2020-12-10 16:07:59 +0200 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2021-06-01 10:48:59 +0300 |
| commit | 02c5e7c2db2bdfe227dd3e7f6febd732ccec5440 (patch) | |
| tree | cdf7d5d640ebc24500d27e388701103dcfe48bb3 /drivers/thunderbolt/tunnel.c | |
| parent | 1c561e4e659d59f1f2825dec42f09338eac1c774 (diff) | |
| download | linux-02c5e7c2db2bdfe227dd3e7f6febd732ccec5440.tar.gz | |
thunderbolt: Move nfc_credits field to struct tb_path_hop
With the USB4 buffer allocation the number of credits (and non-flow
credits) may be different depending on the router buffer allocation
preferences. To allow this move the nfc_credits field to struct
tb_path_hop.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tunnel.c')
| -rw-r--r-- | drivers/thunderbolt/tunnel.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/drivers/thunderbolt/tunnel.c b/drivers/thunderbolt/tunnel.c index e1979bed7146..5be0f31949f1 100644 --- a/drivers/thunderbolt/tunnel.c +++ b/drivers/thunderbolt/tunnel.c @@ -119,7 +119,6 @@ static void tb_pci_init_path(struct tb_path *path) path->priority = 3; path->weight = 1; path->drop_packages = 0; - path->nfc_credits = 0; path->hops[0].initial_credits = 7; if (path->path_length > 1) path->hops[1].initial_credits = @@ -616,7 +615,7 @@ static void tb_dp_init_aux_path(struct tb_path *path) static void tb_dp_init_video_path(struct tb_path *path, bool discover) { - u32 nfc_credits = path->hops[0].in_port->config.nfc_credits; + int i; path->egress_fc_enable = TB_PATH_NONE; path->egress_shared_buffer = TB_PATH_NONE; @@ -625,15 +624,20 @@ static void tb_dp_init_video_path(struct tb_path *path, bool discover) path->priority = 1; path->weight = 1; - if (discover) { - path->nfc_credits = nfc_credits & ADP_CS_4_NFC_BUFFERS_MASK; - } else { - u32 max_credits; + for (i = 0; i < path->path_length; i++) { + u32 nfc_credits = path->hops[i].in_port->config.nfc_credits; - max_credits = (nfc_credits & ADP_CS_4_TOTAL_BUFFERS_MASK) >> - ADP_CS_4_TOTAL_BUFFERS_SHIFT; - /* Leave some credits for AUX path */ - path->nfc_credits = min(max_credits - 2, 12U); + if (discover) { + path->hops[i].nfc_credits = + nfc_credits & ADP_CS_4_NFC_BUFFERS_MASK; + } else { + u32 max_credits; + + max_credits = (nfc_credits & ADP_CS_4_TOTAL_BUFFERS_MASK) >> + ADP_CS_4_TOTAL_BUFFERS_SHIFT; + /* Leave some credits for AUX path */ + path->hops[i].nfc_credits = min(max_credits - 2, 12U); + } } } @@ -1076,7 +1080,6 @@ static void tb_usb3_init_path(struct tb_path *path) path->priority = 3; path->weight = 3; path->drop_packages = 0; - path->nfc_credits = 0; path->hops[0].initial_credits = 7; if (path->path_length > 1) path->hops[1].initial_credits = |