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| author | Michael Neuling <mikey@neuling.org> | 2017-11-14 22:23:03 +1100 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-11-15 02:29:38 -0600 |
| commit | 2dbbcddb43b7f14b879c5ab45d9d6abef8763922 (patch) | |
| tree | 3bec0c950a606478c95a698c937c35292a946ff3 /hw/npu2.c | |
| parent | 0a3df98b0a7ed3c4b61755fd26ab48c804a7c041 (diff) | |
| download | skiboot-2dbbcddb43b7f14b879c5ab45d9d6abef8763922.zip skiboot-2dbbcddb43b7f14b879c5ab45d9d6abef8763922.tar.gz skiboot-2dbbcddb43b7f14b879c5ab45d9d6abef8763922.tar.bz2 | |
npu2: Refactor BAR setting code
This refactors the BAR setting code to make it clearer and handle a
larger range of BAR addresses. This is needed as we are about to move
the GPU to a physical address that is currently not supported by this
code.
This change derives group and chip sections of the BAR from the base
address rather than the chip_id now. mem sel is also derived from the
base address, rather than assuming 0.
No functional change.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Reviewed-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
(cherry picked from commit 3c0408ded5a14e110c8a418be305ac20714cb32d)
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'hw/npu2.c')
| -rw-r--r-- | hw/npu2.c | 11 |
1 files changed, 6 insertions, 5 deletions
@@ -649,11 +649,12 @@ static int npu2_assign_gmb(struct npu2_dev *ndev) npu2_get_gpu_base(ndev, &base, &size); - /* Base address is in GB */ - base >>= 30; - val = SETFIELD(NPU2_MEM_BAR_SEL_MEM, 0ULL, 4); - val = SETFIELD(NPU2_MEM_BAR_NODE_ADDR, val, base); - val = SETFIELD(NPU2_MEM_BAR_GROUP | NPU2_MEM_BAR_CHIP, val, p->chip_id); + NPU2DBG(p, "Setting BAR region dt:%llx\n", base); + val = SETFIELD(NPU2_MEM_BAR_EN, 0ULL, 1); + val = SETFIELD(NPU2_MEM_BAR_SEL_MEM, val, base >> (63-14)); + val = SETFIELD(NPU2_MEM_BAR_GROUP, val, base >> (63-18)); + val = SETFIELD(NPU2_MEM_BAR_CHIP, val, base >> (63-21)); + val = SETFIELD(NPU2_MEM_BAR_NODE_ADDR, val, base >> (63-33)); val = SETFIELD(NPU2_MEM_BAR_POISON, val, 1); val = SETFIELD(NPU2_MEM_BAR_GRANULE, val, 0); |