[PATCH 01/14] powerpc/powernv: Add XICS emulation APIs
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2016-07-08 06:37:34
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
OPAL provides an emulated XICS interrupt controller to use as a fallback on newer processors that don't have a XICS. It's meant as a way to provide backward compatibility with future processors. Add the corresponding interfaces. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> --- arch/powerpc/include/asm/opal-api.h | 6 +++++- arch/powerpc/include/asm/opal.h | 5 +++++ arch/powerpc/platforms/powernv/opal-wrappers.S | 4 ++++ 3 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/opal-api.h b/arch/powerpc/include/asm/opal-api.h
index 72b5f27..170ba0c 100644
--- a/arch/powerpc/include/asm/opal-api.h
+++ b/arch/powerpc/include/asm/opal-api.h@@ -162,7 +162,11 @@ #define OPAL_PCI_GET_PRESENCE_STATE 119 #define OPAL_PCI_GET_POWER_STATE 120 #define OPAL_PCI_SET_POWER_STATE 121 -#define OPAL_LAST 121 +#define OPAL_INT_GET_XIRR 122 +#define OPAL_INT_SET_CPPR 123 +#define OPAL_INT_EOI 124 +#define OPAL_INT_SET_MFRR 125 +#define OPAL_LAST 125 /* Device tree flags */
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index 3b369e9..42f0c95 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h@@ -218,6 +218,11 @@ int64_t opal_pci_set_power_state(uint64_t async_token, uint64_t id, uint64_t data); int64_t opal_pci_poll2(uint64_t id, uint64_t data); +int64_t opal_int_get_xirr(uint32_t *out_xirr, bool just_poll); +int64_t opal_int_set_cppr(uint8_t cppr); +int64_t opal_int_eoi(uint32_t xirr); +int64_t opal_int_set_mfrr(uint32_t cpu, uint8_t mfrr); + /* Internal functions */ extern int early_init_dt_scan_opal(unsigned long node, const char *uname, int depth, void *data);
diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S
index 7979d6d..c7764f9 100644
--- a/arch/powerpc/platforms/powernv/opal-wrappers.S
+++ b/arch/powerpc/platforms/powernv/opal-wrappers.S@@ -307,3 +307,7 @@ OPAL_CALL(opal_get_device_tree, OPAL_GET_DEVICE_TREE); OPAL_CALL(opal_pci_get_presence_state, OPAL_PCI_GET_PRESENCE_STATE); OPAL_CALL(opal_pci_get_power_state, OPAL_PCI_GET_POWER_STATE); OPAL_CALL(opal_pci_set_power_state, OPAL_PCI_SET_POWER_STATE); +OPAL_CALL(opal_int_get_xirr, OPAL_INT_GET_XIRR); +OPAL_CALL(opal_int_set_cppr, OPAL_INT_SET_CPPR); +OPAL_CALL(opal_int_eoi, OPAL_INT_EOI); +OPAL_CALL(opal_int_set_mfrr, OPAL_INT_SET_MFRR);
--
2.7.4