tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/powerpc/linux.git next-test head: 4fead715c62a5196fa57218a1992e5eb8437dd8a commit: b4d37a7b6934c0c16930c73f43c08e9a6af22f1a [188/234] powerpc/powernv: Remove unused pnv_npu_try_dma_set_bypass() function config: powerpc-skiroot_defconfig (attached as .config) compiler: powerpc64le-linux-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout b4d37a7b6934c0c16930c73f43c08e9a6af22f1a # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=powerpc
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <l...@intel.com>
All errors (new ones prefixed by >>):
>> arch/powerpc/platforms/powernv/npu-dma.c:126:13: error: 'pnv_npu_set_window'
>> defined but not used [-Werror=unused-function]
static long pnv_npu_set_window(struct iommu_table_group *table_group, int
num,
^~~~~~~~~~~~~~~~~~
>> arch/powerpc/platforms/powernv/npu-dma.c:96:28: error:
>> 'get_gpu_pci_dev_and_pe' defined but not used [-Werror=unused-function]
static struct pnv_ioda_pe *get_gpu_pci_dev_and_pe(struct pnv_ioda_pe *npe,
^~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
vim +/pnv_npu_set_window +126 arch/powerpc/platforms/powernv/npu-dma.c
5d2aa710e69724 Alistair Popple 2015-12-17 91
5d2aa710e69724 Alistair Popple 2015-12-17 92 /*
5d2aa710e69724 Alistair Popple 2015-12-17 93 * Returns the PE
assoicated with the PCI device of the given
5d2aa710e69724 Alistair Popple 2015-12-17 94 * NPU. Returns the linked
pci device if pci_dev != NULL.
5d2aa710e69724 Alistair Popple 2015-12-17 95 */
5d2aa710e69724 Alistair Popple 2015-12-17 @96 static struct pnv_ioda_pe
*get_gpu_pci_dev_and_pe(struct pnv_ioda_pe *npe,
5d2aa710e69724 Alistair Popple 2015-12-17 97
struct pci_dev **gpdev)
5d2aa710e69724 Alistair Popple 2015-12-17 98 {
5d2aa710e69724 Alistair Popple 2015-12-17 99 struct pnv_phb *phb;
5d2aa710e69724 Alistair Popple 2015-12-17 100 struct pci_controller
*hose;
5d2aa710e69724 Alistair Popple 2015-12-17 101 struct pci_dev *pdev;
5d2aa710e69724 Alistair Popple 2015-12-17 102 struct pnv_ioda_pe *pe;
5d2aa710e69724 Alistair Popple 2015-12-17 103 struct pci_dn *pdn;
5d2aa710e69724 Alistair Popple 2015-12-17 104
5d2aa710e69724 Alistair Popple 2015-12-17 105 pdev =
pnv_pci_get_gpu_dev(npe->pdev);
5d2aa710e69724 Alistair Popple 2015-12-17 106 if (!pdev)
5d2aa710e69724 Alistair Popple 2015-12-17 107 return NULL;
5d2aa710e69724 Alistair Popple 2015-12-17 108
5d2aa710e69724 Alistair Popple 2015-12-17 109 pdn = pci_get_pdn(pdev);
5d2aa710e69724 Alistair Popple 2015-12-17 110 if (WARN_ON(!pdn ||
pdn->pe_number == IODA_INVALID_PE))
5d2aa710e69724 Alistair Popple 2015-12-17 111 return NULL;
5d2aa710e69724 Alistair Popple 2015-12-17 112
5d2aa710e69724 Alistair Popple 2015-12-17 113 hose =
pci_bus_to_host(pdev->bus);
5d2aa710e69724 Alistair Popple 2015-12-17 114 phb =
hose->private_data;
5d2aa710e69724 Alistair Popple 2015-12-17 115 pe =
&phb->ioda.pe_array[pdn->pe_number];
5d2aa710e69724 Alistair Popple 2015-12-17 116
5d2aa710e69724 Alistair Popple 2015-12-17 117 if (gpdev)
5d2aa710e69724 Alistair Popple 2015-12-17 118 *gpdev = pdev;
5d2aa710e69724 Alistair Popple 2015-12-17 119
5d2aa710e69724 Alistair Popple 2015-12-17 120 return pe;
5d2aa710e69724 Alistair Popple 2015-12-17 121 }
5d2aa710e69724 Alistair Popple 2015-12-17 122
83fb8ccf975138 Alexey Kardashevskiy 2018-12-19 123 static long
pnv_npu_unset_window(struct iommu_table_group *table_group,
83fb8ccf975138 Alexey Kardashevskiy 2018-12-19 124 int num);
83fb8ccf975138 Alexey Kardashevskiy 2018-12-19 125
83fb8ccf975138 Alexey Kardashevskiy 2018-12-19 @126 static long
pnv_npu_set_window(struct iommu_table_group *table_group, int num,
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 127 struct
iommu_table *tbl)
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 128 {
83fb8ccf975138 Alexey Kardashevskiy 2018-12-19 129 struct pnv_ioda_pe *npe
= container_of(table_group, struct pnv_ioda_pe,
83fb8ccf975138 Alexey Kardashevskiy 2018-12-19 130
table_group);
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 131 struct pnv_phb *phb =
npe->phb;
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 132 int64_t rc;
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 133 const unsigned long
size = tbl->it_indirect_levels ?
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 134
tbl->it_level_size : tbl->it_size;
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 135 const __u64 start_addr
= tbl->it_offset << tbl->it_page_shift;
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 136 const __u64 win_size =
tbl->it_size << tbl->it_page_shift;
b04149c2dd85ac Alexey Kardashevskiy 2018-12-19 137 int num2 = (num == 0) ?
1 : 0;
b04149c2dd85ac Alexey Kardashevskiy 2018-12-19 138
b04149c2dd85ac Alexey Kardashevskiy 2018-12-19 139 /* NPU has just one TVE
so if there is another table, remove it first */
b04149c2dd85ac Alexey Kardashevskiy 2018-12-19 140 if
(npe->table_group.tables[num2])
83fb8ccf975138 Alexey Kardashevskiy 2018-12-19 141
pnv_npu_unset_window(&npe->table_group, num2);
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 142
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 143 pe_info(npe, "Setting
up window %llx..%llx pg=%lx\n",
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 144
start_addr, start_addr + win_size - 1,
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 145
IOMMU_PAGE_SIZE(tbl));
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 146
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 147 rc =
opal_pci_map_pe_dma_window(phb->opal_id,
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 148
npe->pe_number,
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 149
npe->pe_number,
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 150
tbl->it_indirect_levels + 1,
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 151
__pa(tbl->it_base),
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 152 size <<
3,
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 153
IOMMU_PAGE_SIZE(tbl));
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 154 if (rc) {
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 155 pe_err(npe,
"Failed to configure TCE table, err %lld\n", rc);
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 156 return rc;
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 157 }
6b3d12a948d279 Alistair Popple 2017-05-03 158
pnv_pci_ioda2_tce_invalidate_entire(phb, false);
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 159
85674868cecebd Alexey Kardashevskiy 2016-04-29 160 /* Add the table to the
list so its TCE cache will get invalidated */
b5cb9ab1a00b11 Alexey Kardashevskiy 2016-04-29 161
pnv_pci_link_table_and_group(phb->hose->node, num,
85674868cecebd Alexey Kardashevskiy 2016-04-29 162 tbl,
&npe->table_group);
85674868cecebd Alexey Kardashevskiy 2016-04-29 163
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 164 return 0;
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 165 }
b575c731fe58c1 Alexey Kardashevskiy 2016-04-29 166
:::::: The code at line 126 was first introduced by commit
:::::: 83fb8ccf975138283c7f6d3685d9c5e2292381dd powerpc/powernv/npu: Convert
NPU IOMMU helpers to iommu_table_group_ops
:::::: TO: Alexey Kardashevskiy <a...@ozlabs.ru>
:::::: CC: Michael Ellerman <m...@ellerman.id.au>
---
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