diff options
| author |   Dirk van der Merwe <dirk.vandermerwe@netronome.com> | 2019-09-11 16:21:18 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-09-12 00:01:00 +0100 |
| commit | 421bceb270e21b6db92988923445460c2e498888 (patch) | |
| tree | 5e33d143c6379d3b25a7f9813baceedd46a86ff3 /drivers/net | |
| parent | tcp: force a PSH flag on TSO packets (diff) | |
| download | linux-dev-421bceb270e21b6db92988923445460c2e498888.tar.xz linux-dev-421bceb270e21b6db92988923445460c2e498888.zip | |
nfp: read chip model from the PluDevice register
The PluDevice register provides the authoritative chip model/revision.
Since the model number is purely used for reporting purposes, follow
the hardware team convention of subtracting 0x10 from the PluDevice
register to obtain the chip model/revision number.
Suggested-by: Francois H. Theron <francois.theron@netronome.com>
Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cpplib.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cpplib.c b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cpplib.c index 3cfecf105bde..85734c6badf5 100644 --- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cpplib.c +++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cpplib.c @@ -24,8 +24,9 @@ /* NFP6000 PL */ #define NFP_PL_DEVICE_ID 0x00000004 #define NFP_PL_DEVICE_ID_MASK GENMASK(7, 0) - -#define NFP6000_ARM_GCSR_SOFTMODEL0 0x00400144 +#define NFP_PL_DEVICE_PART_MASK GENMASK(31, 16) +#define NFP_PL_DEVICE_MODEL_MASK (NFP_PL_DEVICE_PART_MASK | \ + NFP_PL_DEVICE_ID_MASK) /** * nfp_cpp_readl() - Read a u32 word from a CPP location @@ -120,22 +121,17 @@ int nfp_cpp_writeq(struct nfp_cpp *cpp, u32 cpp_id, */ int nfp_cpp_model_autodetect(struct nfp_cpp *cpp, u32 *model) { - const u32 arm_id = NFP_CPP_ID(NFP_CPP_TARGET_ARM, 0, 0); u32 reg; int err; - err = nfp_cpp_readl(cpp, arm_id, NFP6000_ARM_GCSR_SOFTMODEL0, model); - if (err < 0) - return err; - - /* The PL's PluDeviceID revision code is authoratative */ - *model &= ~0xff; err = nfp_xpb_readl(cpp, NFP_XPB_DEVICE(1, 1, 16) + NFP_PL_DEVICE_ID, ®); if (err < 0) return err; - *model |= (NFP_PL_DEVICE_ID_MASK & reg) - 0x10; + *model = reg & NFP_PL_DEVICE_MODEL_MASK; + if (*model & NFP_PL_DEVICE_ID_MASK) + *model -= 0x10; return 0; } |