IB/ipath: Deprecate ipath driver and move to staging.

It is now time for the ipath driver to begin to be phased out of the kernel.
This patch moves the ipath driver from the Infiniband sub tree to the staging
area where it will remain until the code is removed from the kernel in a few
releases.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 0 insertions, 1373 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h
deleted file mode 100644
index f0f947122779..000000000000
--- a/drivers/infiniband/hw/ipath/ipath_kernel.h
+++ /dev/null
@@ -1,1373 +0,0 @@
-#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 */
-	int wc_cookie;
-	/* 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);
-
-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_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 const 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 */