diff options
| author | Alex Elder <elder@linaro.org> | 2022-02-03 11:09:21 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-02-04 10:16:08 +0000 |
| commit | b9dbabc5ca84087862cc3ea21bb718d2ef99fa2f (patch) | |
| tree | 1325a7ec3af509687ce02d6a68271f7db30c2e47 /drivers | |
| parent | 4b22d841954929485ffa79e3980eb46657f918dd (diff) | |
| download | linux-stable-b9dbabc5ca84087862cc3ea21bb718d2ef99fa2f.tar.gz linux-stable-b9dbabc5ca84087862cc3ea21bb718d2ef99fa2f.tar.bz2 linux-stable-b9dbabc5ca84087862cc3ea21bb718d2ef99fa2f.zip | |
net: ipa: decide on doorbell in replenish loop
Decide whether the doorbell should be signaled when committing a
replenish transaction in the main replenish loop, rather than in
ipa_endpoint_replenish_one(). This is a step to facilitate the
next patch.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ipa/ipa_endpoint.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index 060a025d70ec..274cf1c30b59 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -1036,10 +1036,10 @@ static void ipa_endpoint_status(struct ipa_endpoint *endpoint) iowrite32(val, ipa->reg_virt + offset); } -static int ipa_endpoint_replenish_one(struct ipa_endpoint *endpoint) +static int +ipa_endpoint_replenish_one(struct ipa_endpoint *endpoint, bool doorbell) { struct gsi_trans *trans; - bool doorbell = false; struct page *page; u32 buffer_size; u32 offset; @@ -1064,11 +1064,6 @@ static int ipa_endpoint_replenish_one(struct ipa_endpoint *endpoint) goto err_free_pages; trans->data = page; /* transaction owns page now */ - if (++endpoint->replenish_ready == IPA_REPLENISH_BATCH) { - doorbell = true; - endpoint->replenish_ready = 0; - } - gsi_trans_commit(trans, doorbell); return 0; @@ -1104,9 +1099,17 @@ static void ipa_endpoint_replenish(struct ipa_endpoint *endpoint) if (test_and_set_bit(IPA_REPLENISH_ACTIVE, endpoint->replenish_flags)) return; - while (atomic_dec_not_zero(&endpoint->replenish_backlog)) - if (ipa_endpoint_replenish_one(endpoint)) + while (atomic_dec_not_zero(&endpoint->replenish_backlog)) { + bool doorbell; + + if (++endpoint->replenish_ready == IPA_REPLENISH_BATCH) + endpoint->replenish_ready = 0; + + /* Ring the doorbell if we've got a full batch */ + doorbell = !endpoint->replenish_ready; + if (ipa_endpoint_replenish_one(endpoint, doorbell)) goto try_again_later; + } clear_bit(IPA_REPLENISH_ACTIVE, endpoint->replenish_flags); |