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| author | Alex Elder <elder@linaro.org> | 2022-06-15 11:59:26 -0500 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-06-16 20:44:03 -0700 |
| commit | 8eec783195859e257164b81299bed1ab723b6c25 (patch) | |
| tree | d363851e7b144a8a7d25b766bc2a7c530548aa86 /drivers/net/ipa/gsi_trans.c | |
| parent | dd5a046cbbedbe9198bc9070516313a5f6002b8c (diff) | |
| download | linux-stable-8eec783195859e257164b81299bed1ab723b6c25.tar.gz linux-stable-8eec783195859e257164b81299bed1ab723b6c25.tar.bz2 linux-stable-8eec783195859e257164b81299bed1ab723b6c25.zip | |
net: ipa: don't pass channel when mapping transaction
Change gsi_channel_trans_map() so it derives the channel used from
the transaction. Pass the index of the *first* TRE used by the
transaction, and have the called function account for the fact that
the last one used is what's important.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ipa/gsi_trans.c')
| -rw-r--r-- | drivers/net/ipa/gsi_trans.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/net/ipa/gsi_trans.c b/drivers/net/ipa/gsi_trans.c index 54a2400cb560..cf646dc8e36a 100644 --- a/drivers/net/ipa/gsi_trans.c +++ b/drivers/net/ipa/gsi_trans.c @@ -214,10 +214,14 @@ void *gsi_trans_pool_alloc_dma(struct gsi_trans_pool *pool, dma_addr_t *addr) return pool->base + offset; } -/* Map a given ring entry index to the transaction associated with it */ -static void gsi_channel_trans_map(struct gsi_channel *channel, u32 index, - struct gsi_trans *trans) +/* Map a TRE ring entry index to the transaction it is associated with */ +static void gsi_trans_map(struct gsi_trans *trans, u32 index) { + struct gsi_channel *channel = &trans->gsi->channel[trans->channel_id]; + + /* The completion event will indicate the last TRE used */ + index += trans->used_count - 1; + /* Note: index *must* be used modulo the ring count here */ channel->trans_info.map[index % channel->tre_ring.count] = trans; } @@ -568,15 +572,15 @@ static void __gsi_trans_commit(struct gsi_trans *trans, bool ring_db) gsi_trans_tre_fill(dest_tre, addr, len, last_tre, bei, opcode); dest_tre++; } + /* Associate the TRE with the transaction */ + gsi_trans_map(trans, tre_ring->index); + tre_ring->index += trans->used_count; trans->len = byte_count; if (channel->toward_ipa) gsi_trans_tx_committed(trans); - /* Associate the last TRE with the transaction */ - gsi_channel_trans_map(channel, tre_ring->index - 1, trans); - gsi_trans_move_pending(trans); /* Ring doorbell if requested, or if all TREs are allocated */ |