diff options
| author | Alex Elder | 2022-09-09 20:11:30 -0500 |
|---|---|---|
| committer | Jakub Kicinski | 2022-09-20 07:45:47 -0700 |
| commit | a14d593724c44098caf7fa5298ce4850af6ab9e0 (patch) | |
| tree | 61ef3162d7dd506967d6fe6165644e2cd367e00d /drivers/net/ipa | |
| parent | 9eefd2fb966da7034528ce9bfc8a7fc03869f589 (diff) | |
net: ipa: update sequencer definition constraints
Starting with IPA v4.5, replication is done differently from before,
and as a result the "replication" portion of the how the sequencer
is specified must be zero.
Add a check for the configuration data failing that requirement, and
only update the sesquencer type value when it's supported.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ipa')
| -rw-r--r-- | drivers/net/ipa/ipa_endpoint.c | 16 | ||||
| -rw-r--r-- | drivers/net/ipa/ipa_reg.h | 1 |
2 files changed, 14 insertions, 3 deletions
diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index eb68ce47698d..fe0eb882104e 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -182,6 +182,15 @@ static bool ipa_endpoint_data_valid_one(struct ipa *ipa, u32 count, return true; /* Nothing more to check for RX */ } + /* Starting with IPA v4.5 sequencer replication is obsolete */ + if (ipa->version >= IPA_VERSION_4_5) { + if (data->endpoint.config.tx.seq_rep_type) { + dev_err(dev, "no-zero seq_rep_type TX endpoint %u\n", + data->endpoint_id); + return false; + } + } + if (data->endpoint.config.status_enable) { other_name = data->endpoint.config.tx.status_endpoint; if (other_name >= count) { @@ -995,9 +1004,10 @@ static void ipa_endpoint_init_seq(struct ipa_endpoint *endpoint) /* Low-order byte configures primary packet processing */ val |= u32_encode_bits(endpoint->config.tx.seq_type, SEQ_TYPE_FMASK); - /* Second byte configures replicated packet processing */ - val |= u32_encode_bits(endpoint->config.tx.seq_rep_type, - SEQ_REP_TYPE_FMASK); + /* Second byte (if supported) configures replicated packet processing */ + if (endpoint->ipa->version < IPA_VERSION_4_5) + val |= u32_encode_bits(endpoint->config.tx.seq_rep_type, + SEQ_REP_TYPE_FMASK); iowrite32(val, endpoint->ipa->reg_virt + offset); } diff --git a/drivers/net/ipa/ipa_reg.h b/drivers/net/ipa/ipa_reg.h index 6f35438cda89..b7b7fb553c44 100644 --- a/drivers/net/ipa/ipa_reg.h +++ b/drivers/net/ipa/ipa_reg.h @@ -585,6 +585,7 @@ static inline u32 rsrc_grp_encoded(enum ipa_version version, u32 rsrc_grp) #define IPA_REG_ENDP_INIT_SEQ_N_OFFSET(txep) \ (0x0000083c + 0x0070 * (txep)) #define SEQ_TYPE_FMASK GENMASK(7, 0) +/* The next field must be zero for IPA v4.5+ */ #define SEQ_REP_TYPE_FMASK GENMASK(15, 8) /** |