diff options
Diffstat (limited to 'drivers/net/ipa/ipa_cmd.c')
| -rw-r--r-- | drivers/net/ipa/ipa_cmd.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/drivers/net/ipa/ipa_cmd.c b/drivers/net/ipa/ipa_cmd.c index d73b03a80ef8..2ac6dd8413de 100644 --- a/drivers/net/ipa/ipa_cmd.c +++ b/drivers/net/ipa/ipa_cmd.c @@ -71,13 +71,12 @@ struct ipa_cmd_hw_hdr_init_local { /* IPA_CMD_REGISTER_WRITE */ -/* For IPA v4.0+, this opcode gets modified with pipeline clear options */ - +/* For IPA v4.0+, the pipeline clear options are encoded in the opcode */ #define REGISTER_WRITE_OPCODE_SKIP_CLEAR_FMASK GENMASK(8, 8) #define REGISTER_WRITE_OPCODE_CLEAR_OPTION_FMASK GENMASK(10, 9) struct ipa_cmd_register_write { - __le16 flags; /* Unused/reserved for IPA v3.5.1 */ + __le16 flags; /* Unused/reserved prior to IPA v4.0 */ __le16 offset; __le32 value; __le32 value_mask; @@ -85,12 +84,12 @@ struct ipa_cmd_register_write { }; /* Field masks for ipa_cmd_register_write structure fields */ -/* The next field is present for IPA v4.0 and above */ +/* The next field is present for IPA v4.0+ */ #define REGISTER_WRITE_FLAGS_OFFSET_HIGH_FMASK GENMASK(14, 11) -/* The next field is present for IPA v3.5.1 only */ +/* The next field is not present for IPA v4.0+ */ #define REGISTER_WRITE_FLAGS_SKIP_CLEAR_FMASK GENMASK(15, 15) -/* The next field and its values are present for IPA v3.5.1 only */ +/* The next field and its values are not present for IPA v4.0+ */ #define REGISTER_WRITE_CLEAR_OPTIONS_FMASK GENMASK(1, 0) /* IPA_CMD_IP_PACKET_INIT */ @@ -123,7 +122,7 @@ struct ipa_cmd_hw_dma_mem_mem { /* Field masks for ipa_cmd_hw_dma_mem_mem structure fields */ #define DMA_SHARED_MEM_FLAGS_DIRECTION_FMASK GENMASK(0, 0) -/* The next two fields are present for IPA v3.5.1 only. */ +/* The next two fields are not present for IPA v4.0+ */ #define DMA_SHARED_MEM_FLAGS_SKIP_CLEAR_FMASK GENMASK(1, 1) #define DMA_SHARED_MEM_FLAGS_CLEAR_OPTIONS_FMASK GENMASK(3, 2) @@ -253,11 +252,12 @@ static bool ipa_cmd_register_write_offset_valid(struct ipa *ipa, u32 bit_count; /* The maximum offset in a register_write immediate command depends - * on the version of IPA. IPA v3.5.1 supports a 16 bit offset, but - * newer versions allow some additional high-order bits. + * on the version of IPA. A 16 bit offset is always supported, + * but starting with IPA v4.0 some additional high-order bits are + * allowed. */ bit_count = BITS_PER_BYTE * sizeof(payload->offset); - if (ipa->version != IPA_VERSION_3_5_1) + if (ipa->version >= IPA_VERSION_4_0) bit_count += hweight32(REGISTER_WRITE_FLAGS_OFFSET_HIGH_FMASK); BUILD_BUG_ON(bit_count > 32); offset_max = ~0U >> (32 - bit_count); @@ -456,7 +456,11 @@ void ipa_cmd_register_write_add(struct gsi_trans *trans, u32 offset, u32 value, /* pipeline_clear_src_grp is not used */ clear_option = clear_full ? pipeline_clear_full : pipeline_clear_hps; - if (ipa->version != IPA_VERSION_3_5_1) { + /* IPA v4.0+ represents the pipeline clear options in the opcode. It + * also supports a larger offset by encoding additional high-order + * bits in the payload flags field. + */ + if (ipa->version >= IPA_VERSION_4_0) { u16 offset_high; u32 val; |