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| author | Andrew Donnellan <ajd@linux.ibm.com> | 2020-01-28 18:19:56 +1100 |
|---|---|---|
| committer | Oliver O'Halloran <oohall@gmail.com> | 2020-01-29 13:51:35 +1100 |
| commit | bc72973d1321546a43f03367b5e73d8ff83a83bd (patch) | |
| tree | 3d30b8625c137e24acd7146c4aa1d6e9ee1c8352 /include | |
| parent | 8b9be4913366b02dbdb43bb8ddc7028a6e9129af (diff) | |
| download | skiboot-bc72973d1321546a43f03367b5e73d8ff83a83bd.zip skiboot-bc72973d1321546a43f03367b5e73d8ff83a83bd.tar.gz skiboot-bc72973d1321546a43f03367b5e73d8ff83a83bd.tar.bz2 | |
hw/npu2-opencapi: Support multiple LPC devices
Currently, we only have a single range for LPC memory per chip, and we only
allow a single device to use that range.
With upcoming Hostboot/SBE changes, we'll use the chip address extension
mask to give us multiple ranges by using the masked bits of the group ID.
Each device can now allocate a whole 4TB non-mirrored region. We still
don't do >4TB ranges.
If the extension mask is not set correctly, we'll fall back to only
permitting one device and printing an error suggesting a firmware upgrade.
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/npu2.h | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/include/npu2.h b/include/npu2.h index 309a7c7..85816a6 100644 --- a/include/npu2.h +++ b/include/npu2.h @@ -150,6 +150,8 @@ struct npu2_dev { uint64_t linux_pe; unsigned long train_start; unsigned long train_timeout; + uint64_t lpc_mem_base; + uint64_t lpc_mem_size; }; struct npu2 { @@ -184,11 +186,6 @@ struct npu2 { struct lock i2c_lock; uint8_t i2c_pin_mode; uint8_t i2c_pin_wr_state; - /* - * Which device currently has an LPC allocation. - * Temporary as long as we only support 1 LPC alloc per chip. - */ - struct npu2_dev *lpc_mem_allocated; }; static inline struct npu2 *phb_to_npu2_nvlink(struct phb *phb) |