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| author |  Alex Elder <elder@linaro.org>
| 2021-03-25 09:44:37 -0500 |
|---|---|---|
| committer |  David S. Miller <davem@davemloft.net>
| 2021-03-25 17:22:30 -0700 |
| commit | 2ad6f03b59332cd875d20c52ab18bb6a927a3213 (patch) | |
| tree | 99d37e0838ecad8fde6cbc37ceccd61a032f9480 /drivers/net/ipa/gsi_reg.h | |
| parent | net: ipa: update GSI ring size registers (diff) | |
| download | linux-2ad6f03b59332cd875d20c52ab18bb6a927a3213.tar.gz linux-2ad6f03b59332cd875d20c52ab18bb6a927a3213.tar.bz2 linux-2ad6f03b59332cd875d20c52ab18bb6a927a3213.zip | |
net: ipa: expand GSI channel types
IPA v4.5 (GSI v2.5) supports a larger set of channel protocols, and
adds an additional field to hold the most-significant bits of the
protocol identifier on a channel.
Add an inline function that encodes the protocol (including the
extra bits for newer versions of IPA), and define some additional
protocols. At this point we still use only GPI protocol.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ipa/gsi_reg.h')
| -rw-r--r-- | drivers/net/ipa/gsi_reg.h | 38 |
1 files changed, 31 insertions, 7 deletions
diff --git a/drivers/net/ipa/gsi_reg.h b/drivers/net/ipa/gsi_reg.h index d964015a4409..b4ac0258d6e1 100644 --- a/drivers/net/ipa/gsi_reg.h +++ b/drivers/net/ipa/gsi_reg.h @@ -64,6 +64,21 @@ (0x0000c01c + 0x1000 * (ee)) /* All other register offsets are relative to gsi->virt */ + +/** enum gsi_channel_type - CHTYPE_PROTOCOL field values in CH_C_CNTXT_0 */ +enum gsi_channel_type { + GSI_CHANNEL_TYPE_MHI = 0x0, + GSI_CHANNEL_TYPE_XHCI = 0x1, + GSI_CHANNEL_TYPE_GPI = 0x2, + GSI_CHANNEL_TYPE_XDCI = 0x3, + GSI_CHANNEL_TYPE_WDI2 = 0x4, + GSI_CHANNEL_TYPE_GCI = 0x5, + GSI_CHANNEL_TYPE_WDI3 = 0x6, + GSI_CHANNEL_TYPE_MHIP = 0x7, + GSI_CHANNEL_TYPE_AQC = 0x8, + GSI_CHANNEL_TYPE_11AD = 0x9, +}; + #define GSI_CH_C_CNTXT_0_OFFSET(ch) \ GSI_EE_N_CH_C_CNTXT_0_OFFSET((ch), GSI_EE_AP) #define GSI_EE_N_CH_C_CNTXT_0_OFFSET(ch, ee) \ @@ -78,13 +93,22 @@ #define CHSTATE_FMASK GENMASK(23, 20) #define ELEMENT_SIZE_FMASK GENMASK(31, 24) -/** enum gsi_channel_type - CHTYPE_PROTOCOL field values in CH_C_CNTXT_0 */ -enum gsi_channel_type { - GSI_CHANNEL_TYPE_MHI = 0x0, - GSI_CHANNEL_TYPE_XHCI = 0x1, - GSI_CHANNEL_TYPE_GPI = 0x2, - GSI_CHANNEL_TYPE_XDCI = 0x3, -}; +/* Encoded value for CH_C_CNTXT_0 register channel protocol fields */ +static inline u32 +chtype_protocol_encoded(enum ipa_version version, enum gsi_channel_type type) +{ + u32 val; + + val = u32_encode_bits(type, CHTYPE_PROTOCOL_FMASK); + if (version < IPA_VERSION_4_5) + return val; + + /* Encode upper bit(s) as well */ + type >>= hweight32(CHTYPE_PROTOCOL_FMASK); + val |= u32_encode_bits(type, CHTYPE_PROTOCOL_MSB_FMASK); + + return val; +} #define GSI_CH_C_CNTXT_1_OFFSET(ch) \ GSI_EE_N_CH_C_CNTXT_1_OFFSET((ch), GSI_EE_AP) |