/* * Copyright (C) ST-Ericsson AB 2010 * Author: Sjur Brendeland * License terms: GNU General Public License (GPL) version 2 */ #ifndef CFCTRL_H_ #define CFCTRL_H_ #include #include /* CAIF Control packet commands */ enum cfctrl_cmd { CFCTRL_CMD_LINK_SETUP = 0, CFCTRL_CMD_LINK_DESTROY = 1, CFCTRL_CMD_LINK_ERR = 2, CFCTRL_CMD_ENUM = 3, CFCTRL_CMD_SLEEP = 4, CFCTRL_CMD_WAKE = 5, CFCTRL_CMD_LINK_RECONF = 6, CFCTRL_CMD_START_REASON = 7, CFCTRL_CMD_RADIO_SET = 8, CFCTRL_CMD_MODEM_SET = 9, CFCTRL_CMD_MASK = 0xf }; /* Channel types */ enum cfctrl_srv { CFCTRL_SRV_DECM = 0, CFCTRL_SRV_VEI = 1, CFCTRL_SRV_VIDEO = 2, CFCTRL_SRV_DBG = 3, CFCTRL_SRV_DATAGRAM = 4, CFCTRL_SRV_RFM = 5, CFCTRL_SRV_UTIL = 6, CFCTRL_SRV_MASK = 0xf }; #define CFCTRL_RSP_BIT 0x20 #define CFCTRL_ERR_BIT 0x10 struct cfctrl_rsp { void (*linksetup_rsp)(struct cflayer *layer, u8 linkid, enum cfctrl_srv serv, u8 phyid, struct cflayer *adapt_layer); void (*linkdestroy_rsp)(struct cflayer *layer, u8 linkid); void (*linkerror_ind)(void); void (*enum_rsp)(void); void (*sleep_rsp)(void); void (*wake_rsp)(void); void (*restart_rsp)(void); void (*radioset_rsp)(void); void (*reject_rsp)(struct cflayer *layer, u8 linkid, struct cflayer *client_layer); }; /* Link Setup Parameters for CAIF-Links. */ struct cfctrl_link_param { enum cfctrl_srv linktype;/* (T3,T0) Type of Channel */ u8 priority; /* (P4,P0) Priority of the channel */ u8 phyid; /* (U2-U0) Physical interface to connect */ u8 endpoint; /* (E1,E0) Endpoint for data channels */ u8 chtype; /* (H1,H0) Channel-Type, applies to * VEI, DEBUG */ union { struct { u8 connid; /* (D7,D0) Video LinkId */ } video; struct { u32 connid; /* (N31,Ngit0) Connection ID used * for Datagram */ } datagram; struct { u32 connid; /* Connection ID used for RFM */ char volume[20]; /* Volume to mount for RFM */ } rfm; /* Configuration for RFM */ struct { u16 fifosize_kb; /* Psock FIFO size in KB */ u16 fifosize_bufs; /* Psock # signal buffers */ char name[16]; /* Name of the PSOCK service */ u8 params[255]; /* Link setup Parameters> */ u16 paramlen; /* Length of Link Setup * Parameters */ } utility; /* Configuration for Utility Links (Psock) */ } u; }; /* This structure is used internally in CFCTRL */ struct cfctrl_request_info { int sequence_no; enum cfctrl_cmd cmd; u8 channel_id; struct cfctrl_link_param param; struct cflayer *client_layer; struct list_head list; }; struct cfctrl { struct cfsrvl serv; struct cfctrl_rsp res; atomic_t req_seq_no; atomic_t rsp_seq_no; struct list_head list; /* Protects from simultaneous access to first_req list */ spinlock_t info_list_lock; #ifndef CAIF_NO_LOOP u8 loop_linkid; int loop_linkused[256]; /* Protects simultaneous access to loop_linkid and loop_linkused */ spinlock_t loop_linkid_lock; #endif }; void cfctrl_enum_req(struct cflayer *cfctrl, u8 physlinkid); int cfctrl_linkup_request(struct cflayer *cfctrl, struct cfctrl_link_param *param, struct cflayer *user_layer); int cfctrl_linkdown_req(struct cflayer *cfctrl, u8 linkid, struct cflayer *client); struct cflayer *cfctrl_create(void); struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer); int cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer); void cfctrl_remove(struct cflayer *layr); #endif /* CFCTRL_H_ */ t/commit/include/net/irda/irlmp.h?h=nds-private-remove&id=d7df2443cd5f67fc6ee7c05a88e4996e8177f91b'>irlmp.h
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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2017-02-03 17:10:28 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-08 23:36:29 +1100
commitd7df2443cd5f67fc6ee7c05a88e4996e8177f91b (patch)
tree098a7c0ca4fceb8a65cb1f693c9d71990388933d /include/net/irda/irlmp.h
parenta0615a16f7d0ceb5804d295203c302d496d8ee91 (diff)
powerpc/mm: Fix spurrious segfaults on radix with autonuma
When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it clears all the protection bits but leave the PTE valid. With the Radix MMU, an attempt at executing from such a PTE will take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G". It is thus incorrect to treat all such faults as errors. We should pass them to handle_mm_fault() for autonuma to deal with. The case of pages that are really not executable is handled by the existing test for VM_EXEC further down. That leaves us with catching the kernel attempts at executing user pages. We can catch that earlier, even before we do find_vma. It is never valid on powerpc for the kernel to take an exec fault to begin with. So fold that test with the existing test for the kernel faulting on kernel addresses to bail out early. Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'include/net/irda/irlmp.h')