diff options
Diffstat (limited to 'drivers/staging/rdma/ipath/ipath_kernel.h')
| -rw-r--r-- | drivers/staging/rdma/ipath/ipath_kernel.h | 1374 |
1 files changed, 0 insertions, 1374 deletions
diff --git a/drivers/staging/rdma/ipath/ipath_kernel.h b/drivers/staging/rdma/ipath/ipath_kernel.h deleted file mode 100644 index 66c934a5f839..000000000000 --- a/drivers/staging/rdma/ipath/ipath_kernel.h +++ /dev/null @@ -1,1374 +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 <linux/sched.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[TASK_COMM_LEN]; - /* 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 */ |