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| author | Reza Arbab <arbab@linux.vnet.ibm.com> | 2017-11-27 18:10:52 -0600 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-11-28 15:00:51 -0600 |
| commit | e6b5867adb7fa18f9f04bfc4c4dde3b7769bf0e4 (patch) | |
| tree | 2aa709b66722bf159641969ea52390d5c8ba2f3a /hw/npu2-hw-procedures.c | |
| parent | 2be4422dace9960b56f27cc611644ca5fdd292d9 (diff) | |
| download | skiboot-e6b5867adb7fa18f9f04bfc4c4dde3b7769bf0e4.zip skiboot-e6b5867adb7fa18f9f04bfc4c4dde3b7769bf0e4.tar.gz skiboot-e6b5867adb7fa18f9f04bfc4c4dde3b7769bf0e4.tar.bz2 | |
npu2: hw-procedures: Add obus_brick_index()
We have code in reset_ntl() which finds the index number of our brick
within its obus chiplet. Move that logic to a separate function for
reuse.
No functional change.
Signed-off-by: Reza Arbab <arbab@linux.vnet.ibm.com>
Acked-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'hw/npu2-hw-procedures.c')
| -rw-r--r-- | hw/npu2-hw-procedures.c | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/hw/npu2-hw-procedures.c b/hw/npu2-hw-procedures.c index bb8534b..4c9d843 100644 --- a/hw/npu2-hw-procedures.c +++ b/hw/npu2-hw-procedures.c @@ -191,6 +191,18 @@ static uint32_t nop(struct npu2_dev *npu_dev __unused) } DEFINE_PROCEDURE(nop); +/* Return the brick number (0-2) within an obus chiplet */ +static int obus_brick_index(struct npu2_dev *ndev) +{ + int index = ndev->index % 3; + + /* On the second obus chiplet, index is reversed */ + if ((ndev->pl_xscom_base & 0x3F000000) != 0x09000000) + return 2 - index; + + return index; +} + static bool poll_fence_status(struct npu2_dev *ndev, uint64_t val) { uint64_t fs; @@ -212,22 +224,7 @@ static uint32_t reset_ntl(struct npu2_dev *ndev) uint64_t val; /* Write PRI */ - if ((ndev->pl_xscom_base & 0xFFFFFFFF) == 0x9010C3F) - val = SETFIELD(PPC_BITMASK(0,1), 0ull, ndev->index % 3); - else { - switch (ndev->index % 3) { - case 0: - val = SETFIELD(PPC_BITMASK(0,1), 0ull, 2); - break; - case 1: - val = SETFIELD(PPC_BITMASK(0,1), 0ull, 1); - break; - case 2: - val = SETFIELD(PPC_BITMASK(0,1), 0ull, 0); - break; - } - } - + val = SETFIELD(PPC_BITMASK(0,1), 0ull, obus_brick_index(ndev)); npu2_write_mask(ndev->npu, NPU2_NTL_PRI_CFG(ndev), val, -1ULL); /* NTL Reset */ |