diff options
| author | Bartlomiej Dudek <bartlomiej.dudek@intel.com> | 2018-02-01 10:52:20 -0800 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-02-01 15:43:30 -0700 |
| commit | 6391214f4d80e32caf622bacab64ed99ed43e1eb (patch) | |
| tree | 15f30d65646aa9ccfe380219f72229ddfd6bc700 /drivers/infiniband/hw/hfi1/pcie.c | |
| parent | aca7f4fc320b5a507da4a41454582440f65cde4c (diff) | |
| download | linux-6391214f4d80e32caf622bacab64ed99ed43e1eb.tar.bz2 | |
IB/hfi1: Do not override given pcie_pset value
During PCIe Gen 3 transistion, pcie_pset is read and might be overridden
to a default value(i.e. 255) in do_pcie_gen3_transition() routine.
If the pcie_pset value is overridden then this new value will be used
during initialization of next adapter on a different card.
Introducing a new local variable to avoid modification of pcie_pset
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Bartlomiej Dudek <bartlomiej.dudek@intel.com>
Signed-off-by: Patel Jay P <jay.p.patel@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1/pcie.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/pcie.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/drivers/infiniband/hw/hfi1/pcie.c b/drivers/infiniband/hw/hfi1/pcie.c index 8c7e7a60b715..83d66e862207 100644 --- a/drivers/infiniband/hw/hfi1/pcie.c +++ b/drivers/infiniband/hw/hfi1/pcie.c @@ -1034,6 +1034,7 @@ int do_pcie_gen3_transition(struct hfi1_devdata *dd) int do_retry, retry_count = 0; int intnum = 0; uint default_pset; + uint pset = pcie_pset; u16 target_vector, target_speed; u16 lnkctl2, vendor; u8 div; @@ -1201,16 +1202,16 @@ retry: * * Set Gen3EqPsetReqVec, leave other fields 0. */ - if (pcie_pset == UNSET_PSET) - pcie_pset = default_pset; - if (pcie_pset > 10) { /* valid range is 0-10, inclusive */ + if (pset == UNSET_PSET) + pset = default_pset; + if (pset > 10) { /* valid range is 0-10, inclusive */ dd_dev_err(dd, "%s: Invalid Eq Pset %u, setting to %d\n", - __func__, pcie_pset, default_pset); - pcie_pset = default_pset; + __func__, pset, default_pset); + pset = default_pset; } - dd_dev_info(dd, "%s: using EQ Pset %u\n", __func__, pcie_pset); + dd_dev_info(dd, "%s: using EQ Pset %u\n", __func__, pset); pci_write_config_dword(dd->pcidev, PCIE_CFG_REG_PL106, - ((1 << pcie_pset) << + ((1 << pset) << PCIE_CFG_REG_PL106_GEN3_EQ_PSET_REQ_VEC_SHIFT) | PCIE_CFG_REG_PL106_GEN3_EQ_EVAL2MS_DISABLE_SMASK | PCIE_CFG_REG_PL106_GEN3_EQ_PHASE23_EXIT_MODE_SMASK); @@ -1240,10 +1241,10 @@ retry: /* apply static CTLE tunings */ u8 pcie_dc, pcie_lf, pcie_hf, pcie_bw; - pcie_dc = ctle_tunings[pcie_pset][0]; - pcie_lf = ctle_tunings[pcie_pset][1]; - pcie_hf = ctle_tunings[pcie_pset][2]; - pcie_bw = ctle_tunings[pcie_pset][3]; + pcie_dc = ctle_tunings[pset][0]; + pcie_lf = ctle_tunings[pset][1]; + pcie_hf = ctle_tunings[pset][2]; + pcie_bw = ctle_tunings[pset][3]; write_gasket_interrupt(dd, intnum++, 0x0026, 0x0200 | pcie_dc); write_gasket_interrupt(dd, intnum++, 0x0026, 0x0100 | pcie_lf); write_gasket_interrupt(dd, intnum++, 0x0026, 0x0000 | pcie_hf); |