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| author | Russell Currey <ruscur@russell.cc> | 2018-02-05 15:00:08 +1100 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2018-02-20 00:09:22 -0600 |
| commit | 08b1929052f8dfa1cc6b0ab3a9df77c9b5493914 (patch) | |
| tree | 641ffdba280e694275b72b907bc570d062af1699 | |
| parent | ac8a62b09c6343b9f992450dffa448e3bb416c53 (diff) | |
| download | skiboot-08b1929052f8dfa1cc6b0ab3a9df77c9b5493914.zip skiboot-08b1929052f8dfa1cc6b0ab3a9df77c9b5493914.tar.gz skiboot-08b1929052f8dfa1cc6b0ab3a9df77c9b5493914.tar.bz2 | |
phb3/phb4/p7ioc: Document supported TCE sizes in DT
Add a new property, "ibm,supported-tce-sizes", to advertise to Linux how
big the available TCE sizes are. Each value is a bit shift, from
smallest to largest.
Signed-off-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
| -rw-r--r-- | hw/p7ioc-phb.c | 5 | ||||
| -rw-r--r-- | hw/phb3.c | 5 | ||||
| -rw-r--r-- | hw/phb4.c | 5 |
3 files changed, 15 insertions, 0 deletions
diff --git a/hw/p7ioc-phb.c b/hw/p7ioc-phb.c index 6c07451..b0a26e8 100644 --- a/hw/p7ioc-phb.c +++ b/hw/p7ioc-phb.c @@ -2596,6 +2596,11 @@ static void p7ioc_pcie_add_node(struct p7ioc_phb *p) tkill = reg[0] + PHB_TCE_KILL; dt_add_property_cells(np, "ibm,opal-tce-kill", hi32(tkill), lo32(tkill)); + dt_add_property_cells(np, "ibm,supported-tce-sizes", + 12, // 4K + 16, // 64K + 24, // 16M + 34); // 16G /* * Linux may use this property to allocate the diag data buffer, which @@ -4469,6 +4469,11 @@ static void phb3_add_properties(struct phb3 *p) tkill = reg + PHB_TCE_KILL; dt_add_property_cells(np, "ibm,opal-tce-kill", hi32(tkill), lo32(tkill)); + dt_add_property_cells(np, "ibm,supported-tce-sizes", + 12, // 4K + 16, // 64K + 24, // 16M + 28); // 256M /* * Indicate to Linux that the architected IODA2 MSI EOI method @@ -4708,6 +4708,11 @@ static void phb4_add_properties(struct phb4 *p) /* M64 ranges start at 1 as MBT0 is used for M32 */ dt_add_property_cells(np, "ibm,opal-available-m64-ranges", 1, p->mbt_size - 1); + dt_add_property_cells(np, "ibm,supported-tce-sizes", + 12, // 4K + 16, // 64K + 21, // 2M + 30); // 1G /* Tell Linux about alignment limits for segment splits. * |