/* * 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_ */ /linux/net-next.git/commit/include/net/netns/generic.h?h=nds-private-remove&id=08d85f3ea99f1eeafc4e8507936190e86a16ee8c'>generic.h
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authorMarc Zyngier <marc.zyngier@arm.com>2017-01-17 16:00:48 +0000
committerThomas Gleixner <tglx@linutronix.de>2017-01-30 15:18:56 +0100
commit08d85f3ea99f1eeafc4e8507936190e86a16ee8c (patch)
tree410bb1acd0cd7dcfaad37ae7b63ff243b7fa4bee /include/net/netns/generic.h
parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
irqdomain: Avoid activating interrupts more than once
Since commit f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early"), we can end-up activating a PCI/MSI twice (once at allocation time, and once at startup time). This is normally of no consequences, except that there is some HW out there that may misbehave if activate is used more than once (the GICv3 ITS, for example, uses the activate callback to issue the MAPVI command, and the architecture spec says that "If there is an existing mapping for the EventID-DeviceID combination, behavior is UNPREDICTABLE"). While this could be worked around in each individual driver, it may make more sense to tackle the issue at the core level. In order to avoid getting in that situation, let's have a per-interrupt flag to remember if we have already activated that interrupt or not. Fixes: f3b0946d629c ("genirq/msi: Make sure PCI MSIs are activated early") Reported-and-tested-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1484668848-24361-1-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/net/netns/generic.h')