diff options
| 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/include/asm/opal.h | |
| parent | 2b74e2a9b39df40a2b489af2d24079617c61ee0e (diff) | |
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/include/asm/opal.h')
| -rw-r--r-- | arch/powerpc/include/asm/opal.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index 12e70fb58700..dde60089d0d4 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -204,6 +204,8 @@ int64_t opal_unregister_dump_region(uint32_t id); int64_t opal_slw_set_reg(uint64_t cpu_pir, uint64_t sprn, uint64_t val); int64_t opal_config_cpu_idle_state(uint64_t state, uint64_t flag); int64_t opal_pci_set_phb_cxl_mode(uint64_t phb_id, uint64_t mode, uint64_t pe_number); +int64_t opal_pci_get_pbcq_tunnel_bar(uint64_t phb_id, uint64_t *addr); +int64_t opal_pci_set_pbcq_tunnel_bar(uint64_t phb_id, uint64_t addr); int64_t opal_ipmi_send(uint64_t interface, struct opal_ipmi_msg *msg, uint64_t msg_len); int64_t opal_ipmi_recv(uint64_t interface, struct opal_ipmi_msg *msg, |