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| author | Philippe Bergheaud <felix@linux.vnet.ibm.com> | 2018-03-02 10:56:11 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-03-13 15:50:30 +1100 |
| commit | d6a90bb83b5084829558788ea5b8818c9be3da63 (patch) | |
| tree | bbd573a1c9fcf7d7157f451d00614b0e7f3b20f0 /arch/powerpc/platforms/powernv/opal-wrappers.S | |
| parent | 2b74e2a9b39df40a2b489af2d24079617c61ee0e (diff) | |
| download | lwn-d6a90bb83b5084829558788ea5b8818c9be3da63.tar.gz lwn-d6a90bb83b5084829558788ea5b8818c9be3da63.zip | |
powerpc/powernv: Enable tunneled operations
P9 supports PCI tunneled operations (atomics and as_notify). This
patch adds support for tunneled operations on powernv, with a new
API, to be called by device drivers:
pnv_pci_enable_tunnel()
Enable tunnel operations, tell driver the 16-bit ASN indication
used by kernel.
pnv_pci_disable_tunnel()
Disable tunnel operations.
pnv_pci_set_tunnel_bar()
Tell kernel the Tunnel BAR Response address used by driver.
This function uses two new OPAL calls, as the PBCQ Tunnel BAR
register is configured by skiboot.
pnv_pci_get_as_notify_info()
Return the ASN info of the thread to be woken up.
Signed-off-by: Philippe Bergheaud <felix@linux.vnet.ibm.com>
Reviewed-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Reviewed-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms/powernv/opal-wrappers.S')
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal-wrappers.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S index 1b2936ba6040..3da30c2f26b4 100644 --- a/arch/powerpc/platforms/powernv/opal-wrappers.S +++ b/arch/powerpc/platforms/powernv/opal-wrappers.S @@ -323,3 +323,5 @@ OPAL_CALL(opal_sensor_group_clear, OPAL_SENSOR_GROUP_CLEAR); OPAL_CALL(opal_npu_spa_setup, OPAL_NPU_SPA_SETUP); OPAL_CALL(opal_npu_spa_clear_cache, OPAL_NPU_SPA_CLEAR_CACHE); OPAL_CALL(opal_npu_tl_set, OPAL_NPU_TL_SET); +OPAL_CALL(opal_pci_get_pbcq_tunnel_bar, OPAL_PCI_GET_PBCQ_TUNNEL_BAR); +OPAL_CALL(opal_pci_set_pbcq_tunnel_bar, OPAL_PCI_SET_PBCQ_TUNNEL_BAR); |