diff options
| author | Alistair Popple <alistair@popple.id.au> | 2016-12-14 13:36:51 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-01-30 20:24:33 +1100 |
| commit | 1d0761d2557d1540727723e4f05395d53321d555 (patch) | |
| tree | 1968b9aec5a02164d15655cd9a47e75c66e0d4ca /arch/powerpc/include/asm/opal.h | |
| parent | 2a8628d41602dc9f988af051a657eef648eec5c0 (diff) | |
| download | linux-1d0761d2557d1540727723e4f05395d53321d555.tar.bz2 | |
powerpc/powernv: Initialise nest mmu
POWER9 contains an off core mmu called the nest mmu (NMMU). This is
used by other hardware units on the chip to translate virtual
addresses into real addresses. The unit attempting an address
translation provides the majority of the context required for the
translation request except for the base address of the partition table
(ie. the PTCR) which needs to be programmed into the NMMU.
This patch adds a call to OPAL to set the PTCR for the nest mmu in
opal_init().
Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/opal.h')
| -rw-r--r-- | arch/powerpc/include/asm/opal.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index 5c7db0f1a708..08ddea966601 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -232,6 +232,7 @@ int64_t opal_pci_tce_kill(uint64_t phb_id, uint32_t kill_type, int64_t opal_rm_pci_tce_kill(uint64_t phb_id, uint32_t kill_type, uint32_t pe_num, uint32_t tce_size, uint64_t dma_addr, uint32_t npages); +int64_t opal_nmmu_set_ptcr(uint64_t chip_id, uint64_t ptcr); /* Internal functions */ extern int early_init_dt_scan_opal(unsigned long node, const char *uname, |