From d6a90bb83b5084829558788ea5b8818c9be3da63 Mon Sep 17 00:00:00 2001 From: Philippe Bergheaud Date: Fri, 2 Mar 2018 10:56:11 +0100 Subject: 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 Reviewed-by: Frederic Barrat Reviewed-by: Christophe Lombard Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/opal-api.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'arch/powerpc/include/asm/opal-api.h') diff --git a/arch/powerpc/include/asm/opal-api.h b/arch/powerpc/include/asm/opal-api.h index 94bd1bf2c873..d886a5b7ff21 100644 --- a/arch/powerpc/include/asm/opal-api.h +++ b/arch/powerpc/include/asm/opal-api.h @@ -204,7 +204,9 @@ #define OPAL_NPU_SPA_SETUP 159 #define OPAL_NPU_SPA_CLEAR_CACHE 160 #define OPAL_NPU_TL_SET 161 -#define OPAL_LAST 161 +#define OPAL_PCI_GET_PBCQ_TUNNEL_BAR 164 +#define OPAL_PCI_SET_PBCQ_TUNNEL_BAR 165 +#define OPAL_LAST 165 /* Device tree flags */ -- cgit