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android_kernel_xiaomi_sm8350/drivers/infiniband/hw/ipath/ipath_kernel.h
Dave Olson 3d0890985a IB/ipath: Add locking for interrupt use of ipath_pd contexts vs free 
Fixes timing race resulting in panic.  Not a performance sensitive path.

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-12-05 11:14:38 -08:00

1381 lines
44 KiB
C
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#ifndef _IPATH_KERNEL_H
#define _IPATH_KERNEL_H
/*
* Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved.
* Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*
* This header file is the base header file for infinipath kernel code
* ipath_user.h serves a similar purpose for user code.
*/
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/scatterlist.h>
#include <asm/io.h>
#include <rdma/ib_verbs.h>
#include "ipath_common.h"
#include "ipath_debug.h"
#include "ipath_registers.h"
/* only s/w major version of InfiniPath we can handle */
#define IPATH_CHIP_VERS_MAJ 2U
/* don't care about this except printing */
#define IPATH_CHIP_VERS_MIN 0U
/* temporary, maybe always */
extern struct infinipath_stats ipath_stats;
#define IPATH_CHIP_SWVERSION IPATH_CHIP_VERS_MAJ
/*
* First-cut critierion for "device is active" is
* two thousand dwords combined Tx, Rx traffic per
* 5-second interval. SMA packets are 64 dwords,
* and occur "a few per second", presumably each way.
*/
#define IPATH_TRAFFIC_ACTIVE_THRESHOLD (2000)
/*
* Struct used to indicate which errors are logged in each of the
* error-counters that are logged to EEPROM. A counter is incremented
* _once_ (saturating at 255) for each event with any bits set in
* the error or hwerror register masks below.
*/
#define IPATH_EEP_LOG_CNT (4)
struct ipath_eep_log_mask {
u64 errs_to_log;
u64 hwerrs_to_log;
};
struct ipath_portdata {
void **port_rcvegrbuf;
dma_addr_t *port_rcvegrbuf_phys;
/* rcvhdrq base, needs mmap before useful */
void *port_rcvhdrq;
/* kernel virtual address where hdrqtail is updated */
void *port_rcvhdrtail_kvaddr;
/*
* temp buffer for expected send setup, allocated at open, instead
* of each setup call
*/
void *port_tid_pg_list;
/* when waiting for rcv or pioavail */
wait_queue_head_t port_wait;
/*
* rcvegr bufs base, physical, must fit
* in 44 bits so 32 bit programs mmap64 44 bit works)
*/
dma_addr_t port_rcvegr_phys;
/* mmap of hdrq, must fit in 44 bits */
dma_addr_t port_rcvhdrq_phys;
dma_addr_t port_rcvhdrqtailaddr_phys;
/*
* number of opens (including slave subports) on this instance
* (ignoring forks, dup, etc. for now)
*/
int port_cnt;
/*
* how much space to leave at start of eager TID entries for
* protocol use, on each TID
*/
/* instead of calculating it */
unsigned port_port;
/* non-zero if port is being shared. */
u16 port_subport_cnt;
/* non-zero if port is being shared. */
u16 port_subport_id;
/* number of pio bufs for this port (all procs, if shared) */
u32 port_piocnt;
/* first pio buffer for this port */
u32 port_pio_base;
/* chip offset of PIO buffers for this port */
u32 port_piobufs;
/* how many alloc_pages() chunks in port_rcvegrbuf_pages */
u32 port_rcvegrbuf_chunks;
/* how many egrbufs per chunk */
u32 port_rcvegrbufs_perchunk;
/* order for port_rcvegrbuf_pages */
size_t port_rcvegrbuf_size;
/* rcvhdrq size (for freeing) */
size_t port_rcvhdrq_size;
/* next expected TID to check when looking for free */
u32 port_tidcursor;
/* next expected TID to check */
unsigned long port_flag;
/* what happened */
unsigned long int_flag;
/* WAIT_RCV that timed out, no interrupt */
u32 port_rcvwait_to;
/* WAIT_PIO that timed out, no interrupt */
u32 port_piowait_to;
/* WAIT_RCV already happened, no wait */
u32 port_rcvnowait;
/* WAIT_PIO already happened, no wait */
u32 port_pionowait;
/* total number of rcvhdrqfull errors */
u32 port_hdrqfull;
/*
* Used to suppress multiple instances of same
* port staying stuck at same point.
*/
u32 port_lastrcvhdrqtail;
/* saved total number of rcvhdrqfull errors for poll edge trigger */
u32 port_hdrqfull_poll;
/* total number of polled urgent packets */
u32 port_urgent;
/* saved total number of polled urgent packets for poll edge trigger */
u32 port_urgent_poll;
/* pid of process using this port */
struct pid *port_pid;
struct pid *port_subpid[INFINIPATH_MAX_SUBPORT];
/* same size as task_struct .comm[] */
char port_comm[16];
/* pkeys set by this use of this port */
u16 port_pkeys[4];
/* so file ops can get at unit */
struct ipath_devdata *port_dd;
/* A page of memory for rcvhdrhead, rcvegrhead, rcvegrtail * N */
void *subport_uregbase;
/* An array of pages for the eager receive buffers * N */
void *subport_rcvegrbuf;
/* An array of pages for the eager header queue entries * N */
void *subport_rcvhdr_base;
/* The version of the library which opened this port */
u32 userversion;
/* Bitmask of active slaves */
u32 active_slaves;
/* Type of packets or conditions we want to poll for */
u16 poll_type;
/* port rcvhdrq head offset */
u32 port_head;
/* receive packet sequence counter */
u32 port_seq_cnt;
};
struct sk_buff;
struct ipath_sge_state;
struct ipath_verbs_txreq;
/*
* control information for layered drivers
*/
struct _ipath_layer {
void *l_arg;
};
struct ipath_skbinfo {
struct sk_buff *skb;
dma_addr_t phys;
};
struct ipath_sdma_txreq {
int flags;
int sg_count;
union {
struct scatterlist *sg;
void *map_addr;
};
void (*callback)(void *, int);
void *callback_cookie;
int callback_status;
u16 start_idx; /* sdma private */
u16 next_descq_idx; /* sdma private */
struct list_head list; /* sdma private */
};
struct ipath_sdma_desc {
__le64 qw[2];
};
#define IPATH_SDMA_TXREQ_F_USELARGEBUF 0x1
#define IPATH_SDMA_TXREQ_F_HEADTOHOST 0x2
#define IPATH_SDMA_TXREQ_F_INTREQ 0x4
#define IPATH_SDMA_TXREQ_F_FREEBUF 0x8
#define IPATH_SDMA_TXREQ_F_FREEDESC 0x10
#define IPATH_SDMA_TXREQ_F_VL15 0x20
#define IPATH_SDMA_TXREQ_S_OK 0
#define IPATH_SDMA_TXREQ_S_SENDERROR 1
#define IPATH_SDMA_TXREQ_S_ABORTED 2
#define IPATH_SDMA_TXREQ_S_SHUTDOWN 3
#define IPATH_SDMA_STATUS_SCORE_BOARD_DRAIN_IN_PROG (1ull << 63)
#define IPATH_SDMA_STATUS_ABORT_IN_PROG (1ull << 62)
#define IPATH_SDMA_STATUS_INTERNAL_SDMA_ENABLE (1ull << 61)
#define IPATH_SDMA_STATUS_SCB_EMPTY (1ull << 30)
/* max dwords in small buffer packet */
#define IPATH_SMALLBUF_DWORDS (dd->ipath_piosize2k >> 2)
/*
* Possible IB config parameters for ipath_f_get/set_ib_cfg()
*/
#define IPATH_IB_CFG_LIDLMC 0 /* Get/set LID (LS16b) and Mask (MS16b) */
#define IPATH_IB_CFG_HRTBT 1 /* Get/set Heartbeat off/enable/auto */
#define IPATH_IB_HRTBT_ON 3 /* Heartbeat enabled, sent every 100msec */
#define IPATH_IB_HRTBT_OFF 0 /* Heartbeat off */
#define IPATH_IB_CFG_LWID_ENB 2 /* Get/set allowed Link-width */
#define IPATH_IB_CFG_LWID 3 /* Get currently active Link-width */
#define IPATH_IB_CFG_SPD_ENB 4 /* Get/set allowed Link speeds */
#define IPATH_IB_CFG_SPD 5 /* Get current Link spd */
#define IPATH_IB_CFG_RXPOL_ENB 6 /* Get/set Auto-RX-polarity enable */
#define IPATH_IB_CFG_LREV_ENB 7 /* Get/set Auto-Lane-reversal enable */
#define IPATH_IB_CFG_LINKLATENCY 8 /* Get Auto-Lane-reversal enable */
struct ipath_devdata {
struct list_head ipath_list;
struct ipath_kregs const *ipath_kregs;
struct ipath_cregs const *ipath_cregs;
/* mem-mapped pointer to base of chip regs */
u64 __iomem *ipath_kregbase;
/* end of mem-mapped chip space; range checking */
u64 __iomem *ipath_kregend;
/* physical address of chip for io_remap, etc. */
unsigned long ipath_physaddr;
/* base of memory alloced for ipath_kregbase, for free */
u64 *ipath_kregalloc;
/* ipath_cfgports pointers */
struct ipath_portdata **ipath_pd;
/* sk_buffs used by port 0 eager receive queue */
struct ipath_skbinfo *ipath_port0_skbinfo;
/* kvirt address of 1st 2k pio buffer */
void __iomem *ipath_pio2kbase;
/* kvirt address of 1st 4k pio buffer */
void __iomem *ipath_pio4kbase;
/*
* points to area where PIOavail registers will be DMA'ed.
* Has to be on a page of it's own, because the page will be
* mapped into user program space. This copy is *ONLY* ever
* written by DMA, not by the driver! Need a copy per device
* when we get to multiple devices
*/
volatile __le64 *ipath_pioavailregs_dma;
/* physical address where updates occur */
dma_addr_t ipath_pioavailregs_phys;
struct _ipath_layer ipath_layer;
/* setup intr */
int (*ipath_f_intrsetup)(struct ipath_devdata *);
/* fallback to alternate interrupt type if possible */
int (*ipath_f_intr_fallback)(struct ipath_devdata *);
/* setup on-chip bus config */
int (*ipath_f_bus)(struct ipath_devdata *, struct pci_dev *);
/* hard reset chip */
int (*ipath_f_reset)(struct ipath_devdata *);
int (*ipath_f_get_boardname)(struct ipath_devdata *, char *,
size_t);
void (*ipath_f_init_hwerrors)(struct ipath_devdata *);
void (*ipath_f_handle_hwerrors)(struct ipath_devdata *, char *,
size_t);
void (*ipath_f_quiet_serdes)(struct ipath_devdata *);
int (*ipath_f_bringup_serdes)(struct ipath_devdata *);
int (*ipath_f_early_init)(struct ipath_devdata *);
void (*ipath_f_clear_tids)(struct ipath_devdata *, unsigned);
void (*ipath_f_put_tid)(struct ipath_devdata *, u64 __iomem*,
u32, unsigned long);
void (*ipath_f_tidtemplate)(struct ipath_devdata *);
void (*ipath_f_cleanup)(struct ipath_devdata *);
void (*ipath_f_setextled)(struct ipath_devdata *, u64, u64);
/* fill out chip-specific fields */
int (*ipath_f_get_base_info)(struct ipath_portdata *, void *);
/* free irq */
void (*ipath_f_free_irq)(struct ipath_devdata *);
struct ipath_message_header *(*ipath_f_get_msgheader)
(struct ipath_devdata *, __le32 *);
void (*ipath_f_config_ports)(struct ipath_devdata *, ushort);
int (*ipath_f_get_ib_cfg)(struct ipath_devdata *, int);
int (*ipath_f_set_ib_cfg)(struct ipath_devdata *, int, u32);
void (*ipath_f_config_jint)(struct ipath_devdata *, u16 , u16);
void (*ipath_f_read_counters)(struct ipath_devdata *,
struct infinipath_counters *);
void (*ipath_f_xgxs_reset)(struct ipath_devdata *);
/* per chip actions needed for IB Link up/down changes */
int (*ipath_f_ib_updown)(struct ipath_devdata *, int, u64);
unsigned ipath_lastegr_idx;
struct ipath_ibdev *verbs_dev;
struct timer_list verbs_timer;
/* total dwords sent (summed from counter) */
u64 ipath_sword;
/* total dwords rcvd (summed from counter) */
u64 ipath_rword;
/* total packets sent (summed from counter) */
u64 ipath_spkts;
/* total packets rcvd (summed from counter) */
u64 ipath_rpkts;
/* ipath_statusp initially points to this. */
u64 _ipath_status;
/* GUID for this interface, in network order */
__be64 ipath_guid;
/*
* aggregrate of error bits reported since last cleared, for
* limiting of error reporting
*/
ipath_err_t ipath_lasterror;
/*
* aggregrate of error bits reported since last cleared, for
* limiting of hwerror reporting
*/
ipath_err_t ipath_lasthwerror;
/* errors masked because they occur too fast */
ipath_err_t ipath_maskederrs;
u64 ipath_lastlinkrecov; /* link recoveries at last ACTIVE */
/* these 5 fields are used to establish deltas for IB Symbol
* errors and linkrecovery errors. They can be reported on
* some chips during link negotiation prior to INIT, and with
* DDR when faking DDR negotiations with non-IBTA switches.
* The chip counters are adjusted at driver unload if there is
* a non-zero delta.
*/
u64 ibdeltainprog;
u64 ibsymdelta;
u64 ibsymsnap;
u64 iblnkerrdelta;
u64 iblnkerrsnap;
/* time in jiffies at which to re-enable maskederrs */
unsigned long ipath_unmasktime;
/* count of egrfull errors, combined for all ports */
u64 ipath_last_tidfull;
/* for ipath_qcheck() */
u64 ipath_lastport0rcv_cnt;
/* template for writing TIDs */
u64 ipath_tidtemplate;
/* value to write to free TIDs */
u64 ipath_tidinvalid;
/* IBA6120 rcv interrupt setup */
u64 ipath_rhdrhead_intr_off;
/* size of memory at ipath_kregbase */
u32 ipath_kregsize;
/* number of registers used for pioavail */
u32 ipath_pioavregs;
/* IPATH_POLL, etc. */
u32 ipath_flags;
/* ipath_flags driver is waiting for */
u32 ipath_state_wanted;
/* last buffer for user use, first buf for kernel use is this
* index. */
u32 ipath_lastport_piobuf;
/* is a stats timer active */
u32 ipath_stats_timer_active;
/* number of interrupts for this device -- saturates... */
u32 ipath_int_counter;
/* dwords sent read from counter */
u32 ipath_lastsword;
/* dwords received read from counter */
u32 ipath_lastrword;
/* sent packets read from counter */
u32 ipath_lastspkts;
/* received packets read from counter */
u32 ipath_lastrpkts;
/* pio bufs allocated per port */
u32 ipath_pbufsport;
/* if remainder on bufs/port, ports < extrabuf get 1 extra */
u32 ipath_ports_extrabuf;
u32 ipath_pioupd_thresh; /* update threshold, some chips */
/*
* number of ports configured as max; zero is set to number chip
* supports, less gives more pio bufs/port, etc.
*/
u32 ipath_cfgports;
/* count of port 0 hdrqfull errors */
u32 ipath_p0_hdrqfull;
/* port 0 number of receive eager buffers */
u32 ipath_p0_rcvegrcnt;
/*
* index of last piobuffer we used. Speeds up searching, by
* starting at this point. Doesn't matter if multiple cpu's use and
* update, last updater is only write that matters. Whenever it
* wraps, we update shadow copies. Need a copy per device when we
* get to multiple devices
*/
u32 ipath_lastpioindex;
u32 ipath_lastpioindexl;
/* max length of freezemsg */
u32 ipath_freezelen;
/*
* consecutive times we wanted a PIO buffer but were unable to
* get one
*/
u32 ipath_consec_nopiobuf;
/*
* hint that we should update ipath_pioavailshadow before
* looking for a PIO buffer
*/
u32 ipath_upd_pio_shadow;
/* so we can rewrite it after a chip reset */
u32 ipath_pcibar0;
/* so we can rewrite it after a chip reset */
u32 ipath_pcibar1;
u32 ipath_x1_fix_tries;
u32 ipath_autoneg_tries;
u32 serdes_first_init_done;
struct ipath_relock {
atomic_t ipath_relock_timer_active;
struct timer_list ipath_relock_timer;
unsigned int ipath_relock_interval; /* in jiffies */
} ipath_relock_singleton;
/* interrupt number */
int ipath_irq;
/* HT/PCI Vendor ID (here for NodeInfo) */
u16 ipath_vendorid;
/* HT/PCI Device ID (here for NodeInfo) */
u16 ipath_deviceid;
/* offset in HT config space of slave/primary interface block */
u8 ipath_ht_slave_off;
/* for write combining settings */
unsigned long ipath_wc_cookie;
unsigned long ipath_wc_base;
unsigned long ipath_wc_len;
/* ref count for each pkey */
atomic_t ipath_pkeyrefs[4];
/* shadow copy of struct page *'s for exp tid pages */
struct page **ipath_pageshadow;
/* shadow copy of dma handles for exp tid pages */
dma_addr_t *ipath_physshadow;
u64 __iomem *ipath_egrtidbase;
/* lock to workaround chip bug 9437 and others */
spinlock_t ipath_kernel_tid_lock;
spinlock_t ipath_user_tid_lock;
spinlock_t ipath_sendctrl_lock;
/* around ipath_pd and (user ports) port_cnt use (intr vs free) */
spinlock_t ipath_uctxt_lock;
/*
* IPATH_STATUS_*,
* this address is mapped readonly into user processes so they can
* get status cheaply, whenever they want.
*/
u64 *ipath_statusp;
/* freeze msg if hw error put chip in freeze */
char *ipath_freezemsg;
/* pci access data structure */
struct pci_dev *pcidev;
struct cdev *user_cdev;
struct cdev *diag_cdev;
struct device *user_dev;
struct device *diag_dev;
/* timer used to prevent stats overflow, error throttling, etc. */
struct timer_list ipath_stats_timer;
/* timer to verify interrupts work, and fallback if possible */
struct timer_list ipath_intrchk_timer;
void *ipath_dummy_hdrq; /* used after port close */
dma_addr_t ipath_dummy_hdrq_phys;
/* SendDMA related entries */
spinlock_t ipath_sdma_lock;
unsigned long ipath_sdma_status;
unsigned long ipath_sdma_abort_jiffies;
unsigned long ipath_sdma_abort_intr_timeout;
unsigned long ipath_sdma_buf_jiffies;
struct ipath_sdma_desc *ipath_sdma_descq;
u64 ipath_sdma_descq_added;
u64 ipath_sdma_descq_removed;
int ipath_sdma_desc_nreserved;
u16 ipath_sdma_descq_cnt;
u16 ipath_sdma_descq_tail;
u16 ipath_sdma_descq_head;
u16 ipath_sdma_next_intr;
u16 ipath_sdma_reset_wait;
u8 ipath_sdma_generation;
struct tasklet_struct ipath_sdma_abort_task;
struct tasklet_struct ipath_sdma_notify_task;
struct list_head ipath_sdma_activelist;
struct list_head ipath_sdma_notifylist;
atomic_t ipath_sdma_vl15_count;
struct timer_list ipath_sdma_vl15_timer;
dma_addr_t ipath_sdma_descq_phys;
volatile __le64 *ipath_sdma_head_dma;
dma_addr_t ipath_sdma_head_phys;
unsigned long ipath_ureg_align; /* user register alignment */
struct delayed_work ipath_autoneg_work;
wait_queue_head_t ipath_autoneg_wait;
/* HoL blocking / user app forward-progress state */
unsigned ipath_hol_state;
unsigned ipath_hol_next;
struct timer_list ipath_hol_timer;
/*
* Shadow copies of registers; size indicates read access size.
* Most of them are readonly, but some are write-only register,
* where we manipulate the bits in the shadow copy, and then write
* the shadow copy to infinipath.
*
* We deliberately make most of these 32 bits, since they have
* restricted range. For any that we read, we won't to generate 32
* bit accesses, since Opteron will generate 2 separate 32 bit HT
* transactions for a 64 bit read, and we want to avoid unnecessary
* HT transactions.
*/
/* This is the 64 bit group */
/*
* shadow of pioavail, check to be sure it's large enough at
* init time.
*/
unsigned long ipath_pioavailshadow[8];
/* bitmap of send buffers available for the kernel to use with PIO. */
unsigned long ipath_pioavailkernel[8];
/* shadow of kr_gpio_out, for rmw ops */
u64 ipath_gpio_out;
/* shadow the gpio mask register */
u64 ipath_gpio_mask;
/* shadow the gpio output enable, etc... */
u64 ipath_extctrl;
/* kr_revision shadow */
u64 ipath_revision;
/*
* shadow of ibcctrl, for interrupt handling of link changes,
* etc.
*/
u64 ipath_ibcctrl;
/*
* last ibcstatus, to suppress "duplicate" status change messages,
* mostly from 2 to 3
*/
u64 ipath_lastibcstat;
/* hwerrmask shadow */
ipath_err_t ipath_hwerrmask;
ipath_err_t ipath_errormask; /* errormask shadow */
/* interrupt config reg shadow */
u64 ipath_intconfig;
/* kr_sendpiobufbase value */
u64 ipath_piobufbase;
/* kr_ibcddrctrl shadow */
u64 ipath_ibcddrctrl;
/* these are the "32 bit" regs */
/*
* number of GUIDs in the flash for this interface; may need some
* rethinking for setting on other ifaces
*/
u32 ipath_nguid;
/*
* the following two are 32-bit bitmasks, but {test,clear,set}_bit
* all expect bit fields to be "unsigned long"
*/
/* shadow kr_rcvctrl */
unsigned long ipath_rcvctrl;
/* shadow kr_sendctrl */
unsigned long ipath_sendctrl;
/* to not count armlaunch after cancel */
unsigned long ipath_lastcancel;
/* count cases where special trigger was needed (double write) */
unsigned long ipath_spectriggerhit;
/* value we put in kr_rcvhdrcnt */
u32 ipath_rcvhdrcnt;
/* value we put in kr_rcvhdrsize */
u32 ipath_rcvhdrsize;
/* value we put in kr_rcvhdrentsize */
u32 ipath_rcvhdrentsize;
/* offset of last entry in rcvhdrq */
u32 ipath_hdrqlast;
/* kr_portcnt value */
u32 ipath_portcnt;
/* kr_pagealign value */
u32 ipath_palign;
/* number of "2KB" PIO buffers */
u32 ipath_piobcnt2k;
/* size in bytes of "2KB" PIO buffers */
u32 ipath_piosize2k;
/* number of "4KB" PIO buffers */
u32 ipath_piobcnt4k;
/* size in bytes of "4KB" PIO buffers */
u32 ipath_piosize4k;
u32 ipath_pioreserved; /* reserved special-inkernel; */
/* kr_rcvegrbase value */
u32 ipath_rcvegrbase;
/* kr_rcvegrcnt value */
u32 ipath_rcvegrcnt;
/* kr_rcvtidbase value */
u32 ipath_rcvtidbase;
/* kr_rcvtidcnt value */
u32 ipath_rcvtidcnt;
/* kr_sendregbase */
u32 ipath_sregbase;
/* kr_userregbase */
u32 ipath_uregbase;
/* kr_counterregbase */
u32 ipath_cregbase;
/* shadow the control register contents */
u32 ipath_control;
/* PCI revision register (HTC rev on FPGA) */
u32 ipath_pcirev;
/* chip address space used by 4k pio buffers */
u32 ipath_4kalign;
/* The MTU programmed for this unit */
u32 ipath_ibmtu;
/*
* The max size IB packet, included IB headers that we can send.
* Starts same as ipath_piosize, but is affected when ibmtu is
* changed, or by size of eager buffers
*/
u32 ipath_ibmaxlen;
/*
* ibmaxlen at init time, limited by chip and by receive buffer
* size. Not changed after init.
*/
u32 ipath_init_ibmaxlen;
/* size of each rcvegrbuffer */
u32 ipath_rcvegrbufsize;
/* localbus width (1, 2,4,8,16,32) from config space */
u32 ipath_lbus_width;
/* localbus speed (HT: 200,400,800,1000; PCIe 2500) */
u32 ipath_lbus_speed;
/*
* number of sequential ibcstatus change for polling active/quiet
* (i.e., link not coming up).
*/
u32 ipath_ibpollcnt;
/* low and high portions of MSI capability/vector */
u32 ipath_msi_lo;
/* saved after PCIe init for restore after reset */
u32 ipath_msi_hi;
/* MSI data (vector) saved for restore */
u16 ipath_msi_data;
/* MLID programmed for this instance */
u16 ipath_mlid;
/* LID programmed for this instance */
u16 ipath_lid;
/* list of pkeys programmed; 0 if not set */
u16 ipath_pkeys[4];
/*
* ASCII serial number, from flash, large enough for original
* all digit strings, and longer QLogic serial number format
*/
u8 ipath_serial[16];
/* human readable board version */
u8 ipath_boardversion[96];
u8 ipath_lbus_info[32]; /* human readable localbus info */
/* chip major rev, from ipath_revision */
u8 ipath_majrev;
/* chip minor rev, from ipath_revision */
u8 ipath_minrev;
/* board rev, from ipath_revision */
u8 ipath_boardrev;
/* saved for restore after reset */
u8 ipath_pci_cacheline;
/* LID mask control */
u8 ipath_lmc;
/* link width supported */
u8 ipath_link_width_supported;
/* link speed supported */
u8 ipath_link_speed_supported;
u8 ipath_link_width_enabled;
u8 ipath_link_speed_enabled;
u8 ipath_link_width_active;
u8 ipath_link_speed_active;
/* Rx Polarity inversion (compensate for ~tx on partner) */
u8 ipath_rx_pol_inv;
u8 ipath_r_portenable_shift;
u8 ipath_r_intravail_shift;
u8 ipath_r_tailupd_shift;
u8 ipath_r_portcfg_shift;
/* unit # of this chip, if present */
int ipath_unit;
/* local link integrity counter */
u32 ipath_lli_counter;
/* local link integrity errors */
u32 ipath_lli_errors;
/*
* Above counts only cases where _successive_ LocalLinkIntegrity
* errors were seen in the receive headers of kern-packets.
* Below are the three (monotonically increasing) counters
* maintained via GPIO interrupts on iba6120-rev2.
*/
u32 ipath_rxfc_unsupvl_errs;
u32 ipath_overrun_thresh_errs;
u32 ipath_lli_errs;
/*
* Not all devices managed by a driver instance are the same
* type, so these fields must be per-device.
*/
u64 ipath_i_bitsextant;
ipath_err_t ipath_e_bitsextant;
ipath_err_t ipath_hwe_bitsextant;
/*
* Below should be computable from number of ports,
* since they are never modified.
*/
u64 ipath_i_rcvavail_mask;
u64 ipath_i_rcvurg_mask;
u16 ipath_i_rcvurg_shift;
u16 ipath_i_rcvavail_shift;
/*
* Register bits for selecting i2c direction and values, used for
* I2C serial flash.
*/
u8 ipath_gpio_sda_num;
u8 ipath_gpio_scl_num;
u8 ipath_i2c_chain_type;
u64 ipath_gpio_sda;
u64 ipath_gpio_scl;
/* lock for doing RMW of shadows/regs for ExtCtrl and GPIO */
spinlock_t ipath_gpio_lock;
/*
* IB link and linktraining states and masks that vary per chip in
* some way. Set at init, to avoid each IB status change interrupt
*/
u8 ibcs_ls_shift;
u8 ibcs_lts_mask;
u32 ibcs_mask;
u32 ib_init;
u32 ib_arm;
u32 ib_active;
u16 ipath_rhf_offset; /* offset of RHF within receive header entry */
/*
* shift/mask for linkcmd, linkinitcmd, maxpktlen in ibccontol
* reg. Changes for IBA7220
*/
u8 ibcc_lic_mask; /* LinkInitCmd */
u8 ibcc_lc_shift; /* LinkCmd */
u8 ibcc_mpl_shift; /* Maxpktlen */
u8 delay_mult;
/* used to override LED behavior */
u8 ipath_led_override; /* Substituted for normal value, if non-zero */
u16 ipath_led_override_timeoff; /* delta to next timer event */
u8 ipath_led_override_vals[2]; /* Alternates per blink-frame */
u8 ipath_led_override_phase; /* Just counts, LSB picks from vals[] */
atomic_t ipath_led_override_timer_active;
/* Used to flash LEDs in override mode */
struct timer_list ipath_led_override_timer;
/* Support (including locks) for EEPROM logging of errors and time */
/* control access to actual counters, timer */
spinlock_t ipath_eep_st_lock;
/* control high-level access to EEPROM */
struct mutex ipath_eep_lock;
/* Below inc'd by ipath_snap_cntrs(), locked by ipath_eep_st_lock */
uint64_t ipath_traffic_wds;
/* active time is kept in seconds, but logged in hours */
atomic_t ipath_active_time;
/* Below are nominal shadow of EEPROM, new since last EEPROM update */
uint8_t ipath_eep_st_errs[IPATH_EEP_LOG_CNT];
uint8_t ipath_eep_st_new_errs[IPATH_EEP_LOG_CNT];
uint16_t ipath_eep_hrs;
/*
* masks for which bits of errs, hwerrs that cause
* each of the counters to increment.
*/
struct ipath_eep_log_mask ipath_eep_st_masks[IPATH_EEP_LOG_CNT];
/* interrupt mitigation reload register info */
u16 ipath_jint_idle_ticks; /* idle clock ticks */
u16 ipath_jint_max_packets; /* max packets across all ports */
/*
* lock for access to SerDes, and flags to sequence preset
* versus steady-state. 7220-only at the moment.
*/
spinlock_t ipath_sdepb_lock;
u8 ipath_presets_needed; /* Set if presets to be restored next DOWN */
};
/* ipath_hol_state values (stopping/starting user proc, send flushing) */
#define IPATH_HOL_UP 0
#define IPATH_HOL_DOWN 1
/* ipath_hol_next toggle values, used when hol_state IPATH_HOL_DOWN */
#define IPATH_HOL_DOWNSTOP 0
#define IPATH_HOL_DOWNCONT 1
/* bit positions for sdma_status */
#define IPATH_SDMA_ABORTING 0
#define IPATH_SDMA_DISARMED 1
#define IPATH_SDMA_DISABLED 2
#define IPATH_SDMA_LAYERBUF 3
#define IPATH_SDMA_RUNNING 30
#define IPATH_SDMA_SHUTDOWN 31
/* bit combinations that correspond to abort states */
#define IPATH_SDMA_ABORT_NONE 0
#define IPATH_SDMA_ABORT_ABORTING (1UL << IPATH_SDMA_ABORTING)
#define IPATH_SDMA_ABORT_DISARMED ((1UL << IPATH_SDMA_ABORTING) | \
(1UL << IPATH_SDMA_DISARMED))
#define IPATH_SDMA_ABORT_DISABLED ((1UL << IPATH_SDMA_ABORTING) | \
(1UL << IPATH_SDMA_DISABLED))
#define IPATH_SDMA_ABORT_ABORTED ((1UL << IPATH_SDMA_ABORTING) | \
(1UL << IPATH_SDMA_DISARMED) | (1UL << IPATH_SDMA_DISABLED))
#define IPATH_SDMA_ABORT_MASK ((1UL<<IPATH_SDMA_ABORTING) | \
(1UL << IPATH_SDMA_DISARMED) | (1UL << IPATH_SDMA_DISABLED))
#define IPATH_SDMA_BUF_NONE 0
#define IPATH_SDMA_BUF_MASK (1UL<<IPATH_SDMA_LAYERBUF)
/* Private data for file operations */
struct ipath_filedata {
struct ipath_portdata *pd;
unsigned subport;
unsigned tidcursor;
struct ipath_user_sdma_queue *pq;
};
extern struct list_head ipath_dev_list;
extern spinlock_t ipath_devs_lock;
extern struct ipath_devdata *ipath_lookup(int unit);
int ipath_init_chip(struct ipath_devdata *, int);
int ipath_enable_wc(struct ipath_devdata *dd);
void ipath_disable_wc(struct ipath_devdata *dd);
int ipath_count_units(int *npresentp, int *nupp, int *maxportsp);
void ipath_shutdown_device(struct ipath_devdata *);
void ipath_clear_freeze(struct ipath_devdata *);
struct file_operations;
int ipath_cdev_init(int minor, char *name, const struct file_operations *fops,
struct cdev **cdevp, struct device **devp);
void ipath_cdev_cleanup(struct cdev **cdevp,
struct device **devp);
int ipath_diag_add(struct ipath_devdata *);
void ipath_diag_remove(struct ipath_devdata *);
extern wait_queue_head_t ipath_state_wait;
int ipath_user_add(struct ipath_devdata *dd);
void ipath_user_remove(struct ipath_devdata *dd);
struct sk_buff *ipath_alloc_skb(struct ipath_devdata *dd, gfp_t);
extern int ipath_diag_inuse;
irqreturn_t ipath_intr(int irq, void *devid);
int ipath_decode_err(struct ipath_devdata *dd, char *buf, size_t blen,
ipath_err_t err);
#if __IPATH_INFO || __IPATH_DBG
extern const char *ipath_ibcstatus_str[];
#endif
/* clean up any per-chip chip-specific stuff */
void ipath_chip_cleanup(struct ipath_devdata *);
/* clean up any chip type-specific stuff */
void ipath_chip_done(void);
/* check to see if we have to force ordering for write combining */
int ipath_unordered_wc(void);
void ipath_disarm_piobufs(struct ipath_devdata *, unsigned first,
unsigned cnt);
void ipath_cancel_sends(struct ipath_devdata *, int);
int ipath_create_rcvhdrq(struct ipath_devdata *, struct ipath_portdata *);
void ipath_free_pddata(struct ipath_devdata *, struct ipath_portdata *);
int ipath_parse_ushort(const char *str, unsigned short *valp);
void ipath_kreceive(struct ipath_portdata *);
int ipath_setrcvhdrsize(struct ipath_devdata *, unsigned);
int ipath_reset_device(int);
void ipath_get_faststats(unsigned long);
int ipath_wait_linkstate(struct ipath_devdata *, u32, int);
int ipath_set_linkstate(struct ipath_devdata *, u8);
int ipath_set_mtu(struct ipath_devdata *, u16);
int ipath_set_lid(struct ipath_devdata *, u32, u8);
int ipath_set_rx_pol_inv(struct ipath_devdata *dd, u8 new_pol_inv);
void ipath_enable_armlaunch(struct ipath_devdata *);
void ipath_disable_armlaunch(struct ipath_devdata *);
void ipath_hol_down(struct ipath_devdata *);
void ipath_hol_up(struct ipath_devdata *);
void ipath_hol_event(unsigned long);
void ipath_toggle_rclkrls(struct ipath_devdata *);
void ipath_sd7220_clr_ibpar(struct ipath_devdata *);
void ipath_set_relock_poll(struct ipath_devdata *, int);
void ipath_shutdown_relock_poll(struct ipath_devdata *);
/* for use in system calls, where we want to know device type, etc. */
#define port_fp(fp) ((struct ipath_filedata *)(fp)->private_data)->pd
#define subport_fp(fp) \
((struct ipath_filedata *)(fp)->private_data)->subport
#define tidcursor_fp(fp) \
((struct ipath_filedata *)(fp)->private_data)->tidcursor
#define user_sdma_queue_fp(fp) \
((struct ipath_filedata *)(fp)->private_data)->pq
/*
* values for ipath_flags
*/
/* chip can report link latency (IB 1.2) */
#define IPATH_HAS_LINK_LATENCY 0x1
/* The chip is up and initted */
#define IPATH_INITTED 0x2
/* set if any user code has set kr_rcvhdrsize */
#define IPATH_RCVHDRSZ_SET 0x4
/* The chip is present and valid for accesses */
#define IPATH_PRESENT 0x8
/* HT link0 is only 8 bits wide, ignore upper byte crc
* errors, etc. */
#define IPATH_8BIT_IN_HT0 0x10
/* HT link1 is only 8 bits wide, ignore upper byte crc
* errors, etc. */
#define IPATH_8BIT_IN_HT1 0x20
/* The link is down */
#define IPATH_LINKDOWN 0x40
/* The link level is up (0x11) */
#define IPATH_LINKINIT 0x80
/* The link is in the armed (0x21) state */
#define IPATH_LINKARMED 0x100
/* The link is in the active (0x31) state */
#define IPATH_LINKACTIVE 0x200
/* link current state is unknown */
#define IPATH_LINKUNK 0x400
/* Write combining flush needed for PIO */
#define IPATH_PIO_FLUSH_WC 0x1000
/* DMA Receive tail pointer */
#define IPATH_NODMA_RTAIL 0x2000
/* no IB cable, or no device on IB cable */
#define IPATH_NOCABLE 0x4000
/* Supports port zero per packet receive interrupts via
* GPIO */
#define IPATH_GPIO_INTR 0x8000
/* uses the coded 4byte TID, not 8 byte */
#define IPATH_4BYTE_TID 0x10000
/* packet/word counters are 32 bit, else those 4 counters
* are 64bit */
#define IPATH_32BITCOUNTERS 0x20000
/* Interrupt register is 64 bits */
#define IPATH_INTREG_64 0x40000
/* can miss port0 rx interrupts */
#define IPATH_DISABLED 0x80000 /* administratively disabled */
/* Use GPIO interrupts for new counters */
#define IPATH_GPIO_ERRINTRS 0x100000
#define IPATH_SWAP_PIOBUFS 0x200000
/* Supports Send DMA */
#define IPATH_HAS_SEND_DMA 0x400000
/* Supports Send Count (not just word count) in PBC */
#define IPATH_HAS_PBC_CNT 0x800000
/* Suppress heartbeat, even if turning off loopback */
#define IPATH_NO_HRTBT 0x1000000
#define IPATH_HAS_THRESH_UPDATE 0x4000000
#define IPATH_HAS_MULT_IB_SPEED 0x8000000
#define IPATH_IB_AUTONEG_INPROG 0x10000000
#define IPATH_IB_AUTONEG_FAILED 0x20000000
/* Linkdown-disable intentionally, Do not attempt to bring up */
#define IPATH_IB_LINK_DISABLED 0x40000000
#define IPATH_IB_FORCE_NOTIFY 0x80000000 /* force notify on next ib change */
/* Bits in GPIO for the added interrupts */
#define IPATH_GPIO_PORT0_BIT 2
#define IPATH_GPIO_RXUVL_BIT 3
#define IPATH_GPIO_OVRUN_BIT 4
#define IPATH_GPIO_LLI_BIT 5
#define IPATH_GPIO_ERRINTR_MASK 0x38
/* portdata flag bit offsets */
/* waiting for a packet to arrive */
#define IPATH_PORT_WAITING_RCV 2
/* master has not finished initializing */
#define IPATH_PORT_MASTER_UNINIT 4
/* waiting for an urgent packet to arrive */
#define IPATH_PORT_WAITING_URG 5
/* free up any allocated data at closes */
void ipath_free_data(struct ipath_portdata *dd);
u32 __iomem *ipath_getpiobuf(struct ipath_devdata *, u32, u32 *);
void ipath_chg_pioavailkernel(struct ipath_devdata *dd, unsigned start,
unsigned len, int avail);
void ipath_init_iba7220_funcs(struct ipath_devdata *);
void ipath_init_iba6120_funcs(struct ipath_devdata *);
void ipath_init_iba6110_funcs(struct ipath_devdata *);
void ipath_get_eeprom_info(struct ipath_devdata *);
int ipath_update_eeprom_log(struct ipath_devdata *dd);
void ipath_inc_eeprom_err(struct ipath_devdata *dd, u32 eidx, u32 incr);
u64 ipath_snap_cntr(struct ipath_devdata *, ipath_creg);
void ipath_disarm_senderrbufs(struct ipath_devdata *);
void ipath_force_pio_avail_update(struct ipath_devdata *);
void signal_ib_event(struct ipath_devdata *dd, enum ib_event_type ev);
/*
* Set LED override, only the two LSBs have "public" meaning, but
* any non-zero value substitutes them for the Link and LinkTrain
* LED states.
*/
#define IPATH_LED_PHYS 1 /* Physical (linktraining) GREEN LED */
#define IPATH_LED_LOG 2 /* Logical (link) YELLOW LED */
void ipath_set_led_override(struct ipath_devdata *dd, unsigned int val);
/* send dma routines */
int setup_sdma(struct ipath_devdata *);
void teardown_sdma(struct ipath_devdata *);
void ipath_restart_sdma(struct ipath_devdata *);
void ipath_sdma_intr(struct ipath_devdata *);
int ipath_sdma_verbs_send(struct ipath_devdata *, struct ipath_sge_state *,
u32, struct ipath_verbs_txreq *);
/* ipath_sdma_lock should be locked before calling this. */
int ipath_sdma_make_progress(struct ipath_devdata *dd);
/* must be called under ipath_sdma_lock */
static inline u16 ipath_sdma_descq_freecnt(const struct ipath_devdata *dd)
{
return dd->ipath_sdma_descq_cnt -
(dd->ipath_sdma_descq_added - dd->ipath_sdma_descq_removed) -
1 - dd->ipath_sdma_desc_nreserved;
}
static inline void ipath_sdma_desc_reserve(struct ipath_devdata *dd, u16 cnt)
{
dd->ipath_sdma_desc_nreserved += cnt;
}
static inline void ipath_sdma_desc_unreserve(struct ipath_devdata *dd, u16 cnt)
{
dd->ipath_sdma_desc_nreserved -= cnt;
}
/*
* number of words used for protocol header if not set by ipath_userinit();
*/
#define IPATH_DFLT_RCVHDRSIZE 9
int ipath_get_user_pages(unsigned long, size_t, struct page **);
void ipath_release_user_pages(struct page **, size_t);
void ipath_release_user_pages_on_close(struct page **, size_t);
int ipath_eeprom_read(struct ipath_devdata *, u8, void *, int);
int ipath_eeprom_write(struct ipath_devdata *, u8, const void *, int);
int ipath_tempsense_read(struct ipath_devdata *, u8 regnum);
int ipath_tempsense_write(struct ipath_devdata *, u8 regnum, u8 data);
/* these are used for the registers that vary with port */
void ipath_write_kreg_port(const struct ipath_devdata *, ipath_kreg,
unsigned, u64);
/*
* We could have a single register get/put routine, that takes a group type,
* but this is somewhat clearer and cleaner. It also gives us some error
* checking. 64 bit register reads should always work, but are inefficient
* on opteron (the northbridge always generates 2 separate HT 32 bit reads),
* so we use kreg32 wherever possible. User register and counter register
* reads are always 32 bit reads, so only one form of those routines.
*/
/*
* At the moment, none of the s-registers are writable, so no
* ipath_write_sreg().
*/
/**
* ipath_read_ureg32 - read 32-bit virtualized per-port register
* @dd: device
* @regno: register number
* @port: port number
*
* Return the contents of a register that is virtualized to be per port.
* Returns -1 on errors (not distinguishable from valid contents at
* runtime; we may add a separate error variable at some point).
*/
static inline u32 ipath_read_ureg32(const struct ipath_devdata *dd,
ipath_ureg regno, int port)
{
if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
return 0;
return readl(regno + (u64 __iomem *)
(dd->ipath_uregbase +
(char __iomem *)dd->ipath_kregbase +
dd->ipath_ureg_align * port));
}
/**
* ipath_write_ureg - write 32-bit virtualized per-port register
* @dd: device
* @regno: register number
* @value: value
* @port: port
*
* Write the contents of a register that is virtualized to be per port.
*/
static inline void ipath_write_ureg(const struct ipath_devdata *dd,
ipath_ureg regno, u64 value, int port)
{
u64 __iomem *ubase = (u64 __iomem *)
(dd->ipath_uregbase + (char __iomem *) dd->ipath_kregbase +
dd->ipath_ureg_align * port);
if (dd->ipath_kregbase)
writeq(value, &ubase[regno]);
}
static inline u32 ipath_read_kreg32(const struct ipath_devdata *dd,
ipath_kreg regno)
{
if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
return -1;
return readl((u32 __iomem *) & dd->ipath_kregbase[regno]);
}
static inline u64 ipath_read_kreg64(const struct ipath_devdata *dd,
ipath_kreg regno)
{
if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
return -1;
return readq(&dd->ipath_kregbase[regno]);
}
static inline void ipath_write_kreg(const struct ipath_devdata *dd,
ipath_kreg regno, u64 value)
{
if (dd->ipath_kregbase)
writeq(value, &dd->ipath_kregbase[regno]);
}
static inline u64 ipath_read_creg(const struct ipath_devdata *dd,
ipath_sreg regno)
{
if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
return 0;
return readq(regno + (u64 __iomem *)
(dd->ipath_cregbase +
(char __iomem *)dd->ipath_kregbase));
}
static inline u32 ipath_read_creg32(const struct ipath_devdata *dd,
ipath_sreg regno)
{
if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
return 0;
return readl(regno + (u64 __iomem *)
(dd->ipath_cregbase +
(char __iomem *)dd->ipath_kregbase));
}
static inline void ipath_write_creg(const struct ipath_devdata *dd,
ipath_creg regno, u64 value)
{
if (dd->ipath_kregbase)
writeq(value, regno + (u64 __iomem *)
(dd->ipath_cregbase +
(char __iomem *)dd->ipath_kregbase));
}
static inline void ipath_clear_rcvhdrtail(const struct ipath_portdata *pd)
{
*((u64 *) pd->port_rcvhdrtail_kvaddr) = 0ULL;
}
static inline u32 ipath_get_rcvhdrtail(const struct ipath_portdata *pd)
{
return (u32) le64_to_cpu(*((volatile __le64 *)
pd->port_rcvhdrtail_kvaddr));
}
static inline u32 ipath_get_hdrqtail(const struct ipath_portdata *pd)
{
const struct ipath_devdata *dd = pd->port_dd;
u32 hdrqtail;
if (dd->ipath_flags & IPATH_NODMA_RTAIL) {
__le32 *rhf_addr;
u32 seq;
rhf_addr = (__le32 *) pd->port_rcvhdrq +
pd->port_head + dd->ipath_rhf_offset;
seq = ipath_hdrget_seq(rhf_addr);
hdrqtail = pd->port_head;
if (seq == pd->port_seq_cnt)
hdrqtail++;
} else
hdrqtail = ipath_get_rcvhdrtail(pd);
return hdrqtail;
}
static inline u64 ipath_read_ireg(const struct ipath_devdata *dd, ipath_kreg r)
{
return (dd->ipath_flags & IPATH_INTREG_64) ?
ipath_read_kreg64(dd, r) : ipath_read_kreg32(dd, r);
}
/*
* from contents of IBCStatus (or a saved copy), return linkstate
* Report ACTIVE_DEFER as ACTIVE, because we treat them the same
* everywhere, anyway (and should be, for almost all purposes).
*/
static inline u32 ipath_ib_linkstate(struct ipath_devdata *dd, u64 ibcs)
{
u32 state = (u32)(ibcs >> dd->ibcs_ls_shift) &
INFINIPATH_IBCS_LINKSTATE_MASK;
if (state == INFINIPATH_IBCS_L_STATE_ACT_DEFER)
state = INFINIPATH_IBCS_L_STATE_ACTIVE;
return state;
}
/* from contents of IBCStatus (or a saved copy), return linktrainingstate */
static inline u32 ipath_ib_linktrstate(struct ipath_devdata *dd, u64 ibcs)
{
return (u32)(ibcs >> INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) &
dd->ibcs_lts_mask;
}
/*
* from contents of IBCStatus (or a saved copy), return logical link state
* combination of link state and linktraining state (down, active, init,
* arm, etc.
*/
static inline u32 ipath_ib_state(struct ipath_devdata *dd, u64 ibcs)
{
u32 ibs;
ibs = (u32)(ibcs >> INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) &
dd->ibcs_lts_mask;
ibs |= (u32)(ibcs &
(INFINIPATH_IBCS_LINKSTATE_MASK << dd->ibcs_ls_shift));
return ibs;
}
/*
* sysfs interface.
*/
struct device_driver;
extern const char ib_ipath_version[];
extern struct attribute_group *ipath_driver_attr_groups[];
int ipath_device_create_group(struct device *, struct ipath_devdata *);
void ipath_device_remove_group(struct device *, struct ipath_devdata *);
int ipath_expose_reset(struct device *);
int ipath_init_ipathfs(void);
void ipath_exit_ipathfs(void);
int ipathfs_add_device(struct ipath_devdata *);
int ipathfs_remove_device(struct ipath_devdata *);
/*
* dma_addr wrappers - all 0's invalid for hw
*/
dma_addr_t ipath_map_page(struct pci_dev *, struct page *, unsigned long,
size_t, int);
dma_addr_t ipath_map_single(struct pci_dev *, void *, size_t, int);
const char *ipath_get_unit_name(int unit);
/*
* Flush write combining store buffers (if present) and perform a write
* barrier.
*/
#if defined(CONFIG_X86_64)
#define ipath_flush_wc() asm volatile("sfence" ::: "memory")
#else
#define ipath_flush_wc() wmb()
#endif
extern unsigned ipath_debug; /* debugging bit mask */
extern unsigned ipath_linkrecovery;
extern unsigned ipath_mtu4096;
extern struct mutex ipath_mutex;
#define IPATH_DRV_NAME "ib_ipath"
#define IPATH_MAJOR 233
#define IPATH_USER_MINOR_BASE 0
#define IPATH_DIAGPKT_MINOR 127
#define IPATH_DIAG_MINOR_BASE 129
#define IPATH_NMINORS 255
#define ipath_dev_err(dd,fmt,...) \
do { \
const struct ipath_devdata *__dd = (dd); \
if (__dd->pcidev) \
dev_err(&__dd->pcidev->dev, "%s: " fmt, \
ipath_get_unit_name(__dd->ipath_unit), \
##__VA_ARGS__); \
else \
printk(KERN_ERR IPATH_DRV_NAME ": %s: " fmt, \
ipath_get_unit_name(__dd->ipath_unit), \
##__VA_ARGS__); \
} while (0)
#if _IPATH_DEBUGGING
# define __IPATH_DBG_WHICH(which,fmt,...) \
do { \
if (unlikely(ipath_debug & (which))) \
printk(KERN_DEBUG IPATH_DRV_NAME ": %s: " fmt, \
__func__,##__VA_ARGS__); \
} while(0)
# define ipath_dbg(fmt,...) \
__IPATH_DBG_WHICH(__IPATH_DBG,fmt,##__VA_ARGS__)
# define ipath_cdbg(which,fmt,...) \
__IPATH_DBG_WHICH(__IPATH_##which##DBG,fmt,##__VA_ARGS__)
#else /* ! _IPATH_DEBUGGING */
# define ipath_dbg(fmt,...)
# define ipath_cdbg(which,fmt,...)
#endif /* _IPATH_DEBUGGING */
/*
* this is used for formatting hw error messages...
*/
struct ipath_hwerror_msgs {
u64 mask;
const char *msg;
};
#define INFINIPATH_HWE_MSG(a, b) { .mask = INFINIPATH_HWE_##a, .msg = b }
/* in ipath_intr.c... */
void ipath_format_hwerrors(u64 hwerrs,
const struct ipath_hwerror_msgs *hwerrmsgs,
size_t nhwerrmsgs,
char *msg, size_t lmsg);
#endif /* _IPATH_KERNEL_H */
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