#ifndef _IPATH_KERNEL_H #define _IPATH_KERNEL_H /* * Copyright (c) 2006, 2007 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 #include #include #include #include #include #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; /* 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 */ pid_t port_pid; pid_t 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; }; struct sk_buff; /* * control information for layered drivers */ struct _ipath_layer { void *l_arg; }; struct ipath_skbinfo { struct sk_buff *skb; dma_addr_t phys; }; /* * 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; /* * virtual address where port0 rcvhdrqtail updated for this unit. * only written to by the chip, not the driver. */ volatile __le64 *ipath_hdrqtailptr; /* 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); 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 */ /* 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; /* * 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; /* 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; /* interrupt number */ int ipath_irq; /* HT/PCI Vendor ID (here for NodeInfo) */ u16 ipath_vendorid; /* HT/PCI Device ID (here for NodeInfo) */ u16 ipath_deviceid; /* offset in HT config space of slave/primary interface block */ u8 ipath_ht_slave_off; /* for write combining settings */ unsigned long ipath_wc_cookie; unsigned long ipath_wc_base; unsigned long ipath_wc_len; /* ref count for each pkey */ atomic_t ipath_pkeyrefs[4]; /* shadow copy of struct page *'s for exp tid pages */ struct page **ipath_pageshadow; /* shadow copy of dma handles for exp tid pages */ dma_addr_t *ipath_physshadow; u64 __iomem *ipath_egrtidbase; /* lock to workaround chip bug 9437 and others */ spinlock_t ipath_kernel_tid_lock; spinlock_t ipath_tid_lock; spinlock_t ipath_sendctrl_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 class_device *user_class_dev; struct class_device *diag_class_dev; /* timer used to prevent stats overflow, error throttling, etc. */ struct timer_list ipath_stats_timer; void *ipath_dummy_hdrq; /* used after port close */ dma_addr_t ipath_dummy_hdrq_phys; unsigned long ipath_ureg_align; /* user register alignment */ /* 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]; /* 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; /* 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; unsigned long ipath_lastcancel; /* to not count armlaunch after cancel */ /* 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; /* 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[80]; 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; 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; /* 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; /* 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; /* status check work */ struct delayed_work status_work; /* * 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. */ u32 ipath_i_rcvavail_mask; u32 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. */ u16 ipath_gpio_sda_num; u16 ipath_gpio_scl_num; 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 */ }; /* 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 /* Private data for file operations */ struct ipath_filedata { struct ipath_portdata *pd; unsigned subport; unsigned tidcursor; }; 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 class_device **class_devp); void ipath_cdev_cleanup(struct cdev **cdevp, struct class_device **class_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(char *buf, size_t blen, ipath_err_t err); #if __IPATH_INFO || __IPATH_DBG extern const char *ipath_ibcstatus_str[]; #endif /* clean up any per-chip chip-specific stuff */ void ipath_chip_cleanup(struct ipath_devdata *); /* clean up any chip type-specific stuff */ void ipath_chip_done(void); /* check to see if we have to force ordering for write combining */ int ipath_unordered_wc(void); void ipath_disarm_piobufs(struct ipath_devdata *, unsigned first, unsigned cnt); void ipath_cancel_sends(struct ipath_devdata *, int); int ipath_create_rcvhdrq(struct ipath_devdata *, struct ipath_portdata *); void ipath_free_pddata(struct ipath_devdata *, struct ipath_portdata *); int ipath_parse_ushort(const char *str, unsigned short *valp); void ipath_kreceive(struct ipath_portdata *); int ipath_setrcvhdrsize(struct ipath_devdata *, unsigned); int ipath_reset_device(int); void ipath_get_faststats(unsigned long); int ipath_wait_linkstate(struct ipath_devdata *, u32, int); int ipath_set_linkstate(struct ipath_devdata *, u8); int ipath_set_mtu(struct ipath_devdata *, u16); int ipath_set_lid(struct ipath_devdata *, u32, u8); int ipath_set_rx_pol_inv(struct ipath_devdata *dd, u8 new_pol_inv); void ipath_enable_armlaunch(struct ipath_devdata *); void ipath_disable_armlaunch(struct ipath_devdata *); void ipath_hol_down(struct ipath_devdata *); void ipath_hol_up(struct ipath_devdata *); void ipath_hol_event(unsigned long); /* 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 /* * 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 /* 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 /* can miss port0 rx interrupts */ /* Interrupt register is 64 bits */ #define IPATH_INTREG_64 0x40000 #define IPATH_DISABLED 0x80000 /* administratively disabled */ /* Use GPIO interrupts for new counters */ #define IPATH_GPIO_ERRINTRS 0x100000 #define IPATH_SWAP_PIOBUFS 0x200000 /* Suppress heartbeat, even if turning off loopback */ #define IPATH_NO_HRTBT 0x1000000 #define IPATH_HAS_MULT_IB_SPEED 0x8000000 #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 *); void ipath_init_iba6120_funcs(struct ipath_devdata *); void ipath_init_iba6110_funcs(struct ipath_devdata *); void ipath_get_eeprom_info(struct ipath_devdata *); int ipath_update_eeprom_log(struct ipath_devdata *dd); void ipath_inc_eeprom_err(struct ipath_devdata *dd, u32 eidx, u32 incr); u64 ipath_snap_cntr(struct ipath_devdata *, ipath_creg); void 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); /* * 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); /* 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(), and none of the c-registers are writable, so no * ipath_write_creg(). */ /** * 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 u64 ipath_read_ireg(const struct ipath_devdata *dd, ipath_kreg r) { return (dd->ipath_flags & IPATH_INTREG_64) ? ipath_read_kreg64(dd, r) : ipath_read_kreg32(dd, r); } /* * from contents of IBCStatus (or a saved copy), return linkstate * Report ACTIVE_DEFER as ACTIVE, because we treat them the same * everywhere, anyway (and should be, for almost all purposes). */ static inline u32 ipath_ib_linkstate(struct ipath_devdata *dd, u64 ibcs) { u32 state = (u32)(ibcs >> dd->ibcs_ls_shift) & INFINIPATH_IBCS_LINKSTATE_MASK; if (state == INFINIPATH_IBCS_L_STATE_ACT_DEFER) state = INFINIPATH_IBCS_L_STATE_ACTIVE; return state; } /* from contents of IBCStatus (or a saved copy), return linktrainingstate */ static inline u32 ipath_ib_linktrstate(struct ipath_devdata *dd, u64 ibcs) { return (u32)(ibcs >> INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) & dd->ibcs_lts_mask; } /* * from contents of IBCStatus (or a saved copy), return logical link state * combination of link state and linktraining state (down, active, init, * arm, etc. */ static inline u32 ipath_ib_state(struct ipath_devdata *dd, u64 ibcs) { u32 ibs; ibs = (u32)(ibcs >> INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) & dd->ibcs_lts_mask; ibs |= (u32)(ibcs & (INFINIPATH_IBCS_LINKSTATE_MASK << dd->ibcs_ls_shift)); return ibs; } /* * sysfs interface. */ struct device_driver; extern const char ib_ipath_version[]; extern struct attribute_group *ipath_driver_attr_groups[]; int ipath_device_create_group(struct device *, struct ipath_devdata *); void ipath_device_remove_group(struct device *, struct ipath_devdata *); int ipath_expose_reset(struct device *); int ipath_init_ipathfs(void); void ipath_exit_ipathfs(void); int ipathfs_add_device(struct ipath_devdata *); int ipathfs_remove_device(struct ipath_devdata *); /* * dma_addr wrappers - all 0's invalid for hw */ dma_addr_t ipath_map_page(struct pci_dev *, struct page *, unsigned long, size_t, int); dma_addr_t ipath_map_single(struct pci_dev *, void *, size_t, int); /* * 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; #define IPATH_MAX_PARITY_ATTEMPTS 10000 /* max times to try recovery */ const char *ipath_get_unit_name(int unit); 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 */