diff options
author | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
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committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/tile/include/hv/hypervisor.h | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/tile/include/hv/hypervisor.h')
-rw-r--r-- | kernel/arch/tile/include/hv/hypervisor.h | 60 |
1 files changed, 59 insertions, 1 deletions
diff --git a/kernel/arch/tile/include/hv/hypervisor.h b/kernel/arch/tile/include/hv/hypervisor.h index e0e6af4e7..f10b332b3 100644 --- a/kernel/arch/tile/include/hv/hypervisor.h +++ b/kernel/arch/tile/include/hv/hypervisor.h @@ -321,8 +321,11 @@ /** hv_console_set_ipi */ #define HV_DISPATCH_CONSOLE_SET_IPI 63 +/** hv_send_nmi */ +#define HV_DISPATCH_SEND_NMI 65 + /** One more than the largest dispatch value */ -#define _HV_DISPATCH_END 64 +#define _HV_DISPATCH_END 66 #ifndef __ASSEMBLER__ @@ -1253,6 +1256,11 @@ void hv_downcall_dispatch(void); #define INT_DMATLB_ACCESS_DWNCL INT_DMA_CPL /** Device interrupt downcall interrupt vector */ #define INT_DEV_INTR_DWNCL INT_WORLD_ACCESS +/** NMI downcall interrupt vector */ +#define INT_NMI_DWNCL 64 + +#define HV_NMI_FLAG_FORCE 0x1 /**< Force an NMI downcall regardless of + the ICS bit of the client. */ #ifndef __ASSEMBLER__ @@ -1780,6 +1788,56 @@ int hv_dev_poll(int devhdl, __hv32 events, HV_IntArg intarg); int hv_dev_poll_cancel(int devhdl); +/** NMI information */ +typedef struct +{ + /** Result: negative error, or HV_NMI_RESULT_xxx. */ + int result; + + /** PC from interrupted remote core (if result != HV_NMI_RESULT_FAIL_HV). */ + HV_VirtAddr pc; + +} HV_NMI_Info; + +/** NMI issued successfully. */ +#define HV_NMI_RESULT_OK 0 + +/** NMI not issued: remote tile running at client PL with ICS set. */ +#define HV_NMI_RESULT_FAIL_ICS 1 + +/** NMI not issued: remote tile waiting in hypervisor. */ +#define HV_NMI_RESULT_FAIL_HV 2 + +/** Force an NMI downcall regardless of the ICS bit of the client. */ +#define HV_NMI_FLAG_FORCE 0x1 + +/** Send an NMI interrupt request to a particular tile. + * + * This will cause the NMI to be issued on the remote tile regardless + * of the state of the client interrupt mask. However, if the remote + * tile is in the hypervisor, it will not execute the NMI, and + * HV_NMI_RESULT_FAIL_HV will be returned. Similarly, if the remote + * tile is in a client interrupt critical section at the time of the + * NMI, it will not execute the NMI, and HV_NMI_RESULT_FAIL_ICS will + * be returned. In this second case, however, if HV_NMI_FLAG_FORCE + * is set in flags, then the remote tile will enter its NMI interrupt + * vector regardless. Forcing the NMI vector during an interrupt + * critical section will mean that the client can not safely continue + * execution after handling the interrupt. + * + * @param tile Tile to which the NMI request is sent. + * @param info NMI information which is defined by and interpreted by the + * supervisor, is passed to the specified tile, and is + * stored in the SPR register SYSTEM_SAVE_{CLIENT_PL}_2 on the + * specified tile when entering the NMI handler routine. + * Typically, this parameter stores the NMI type, or an aligned + * VA plus some special bits, etc. + * @param flags Flags (HV_NMI_FLAG_xxx). + * @return Information about the requested NMI. + */ +HV_NMI_Info hv_send_nmi(HV_Coord tile, unsigned long info, __hv64 flags); + + /** Scatter-gather list for preada/pwritea calls. */ typedef struct #if CHIP_VA_WIDTH() <= 32 |