diff options
| author | Alex Elder <elder@linaro.org> | 2021-03-24 08:15:26 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-24 16:52:47 -0700 |
| commit | e6e49e435512c8bcf104e594d3cc34b8f3818492 (patch) | |
| tree | bb667c353bfa02c0e871b7986974e4e767326661 /drivers/net/ipa/ipa_mem.c | |
| parent | 647a05f3ae98ba98b87dc1177a54d205fbaa1b66 (diff) | |
| download | lwn-e6e49e435512c8bcf104e594d3cc34b8f3818492.tar.gz lwn-e6e49e435512c8bcf104e594d3cc34b8f3818492.zip | |
net: ipa: limit local processing context address
Not all of the bits of the LOCAL_PKT_PROC_CNTXT register are valid.
Until IPA v4.5, there are 17 valid bits (though the bottom three
must be zero). Starting with IPA v4.5, 18 bits are valid.
Introduce proc_cntxt_base_addr_encoded() to encode the base address
for use in the register using only the valid bits.
Shorten the name of the register (omit "_BASE") to avoid the need to
wrap the line in the one place it's used.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ipa/ipa_mem.c')
| -rw-r--r-- | drivers/net/ipa/ipa_mem.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/ipa/ipa_mem.c b/drivers/net/ipa/ipa_mem.c index f25029b9ec85..32907dde5dc6 100644 --- a/drivers/net/ipa/ipa_mem.c +++ b/drivers/net/ipa/ipa_mem.c @@ -61,6 +61,7 @@ int ipa_mem_setup(struct ipa *ipa) struct gsi_trans *trans; u32 offset; u16 size; + u32 val; /* Get a transaction to define the header memory region and to zero * the processing context and modem memory regions. @@ -89,8 +90,9 @@ int ipa_mem_setup(struct ipa *ipa) gsi_trans_commit_wait(trans); /* Tell the hardware where the processing context area is located */ - iowrite32(ipa->mem_offset + ipa->mem[IPA_MEM_MODEM_PROC_CTX].offset, - ipa->reg_virt + IPA_REG_LOCAL_PKT_PROC_CNTXT_BASE_OFFSET); + offset = ipa->mem_offset + ipa->mem[IPA_MEM_MODEM_PROC_CTX].offset; + val = proc_cntxt_base_addr_encoded(ipa->version, offset); + iowrite32(val, ipa->reg_virt + IPA_REG_LOCAL_PKT_PROC_CNTXT_OFFSET); return 0; } |