#ifndef _HFI1_KERNEL_H #define _HFI1_KERNEL_H /* * Copyright(c) 2015, 2016 Intel Corporation. * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * BSD LICENSE * * 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. * - Neither the name of Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "chip_registers.h" #include "common.h" #include "verbs.h" #include "pio.h" #include "chip.h" #include "mad.h" #include "qsfp.h" #include "platform.h" #include "affinity.h" /* bumped 1 from s/w major version of TrueScale */ #define HFI1_CHIP_VERS_MAJ 3U /* don't care about this except printing */ #define HFI1_CHIP_VERS_MIN 0U /* The Organization Unique Identifier (Mfg code), and its position in GUID */ #define HFI1_OUI 0x001175 #define HFI1_OUI_LSB 40 #define DROP_PACKET_OFF 0 #define DROP_PACKET_ON 1 extern unsigned long hfi1_cap_mask; #define HFI1_CAP_KGET_MASK(mask, cap) ((mask) & HFI1_CAP_##cap) #define HFI1_CAP_UGET_MASK(mask, cap) \ (((mask) >> HFI1_CAP_USER_SHIFT) & HFI1_CAP_##cap) #define HFI1_CAP_KGET(cap) (HFI1_CAP_KGET_MASK(hfi1_cap_mask, cap)) #define HFI1_CAP_UGET(cap) (HFI1_CAP_UGET_MASK(hfi1_cap_mask, cap)) #define HFI1_CAP_IS_KSET(cap) (!!HFI1_CAP_KGET(cap)) #define HFI1_CAP_IS_USET(cap) (!!HFI1_CAP_UGET(cap)) #define HFI1_MISC_GET() ((hfi1_cap_mask >> HFI1_CAP_MISC_SHIFT) & \ HFI1_CAP_MISC_MASK) /* Offline Disabled Reason is 4-bits */ #define HFI1_ODR_MASK(rsn) ((rsn) & OPA_PI_MASK_OFFLINE_REASON) /* * Control context is always 0 and handles the error packets. * It also handles the VL15 and multicast packets. */ #define HFI1_CTRL_CTXT 0 /* * Driver context will store software counters for each of the events * associated with these status registers */ #define NUM_CCE_ERR_STATUS_COUNTERS 41 #define NUM_RCV_ERR_STATUS_COUNTERS 64 #define NUM_MISC_ERR_STATUS_COUNTERS 13 #define NUM_SEND_PIO_ERR_STATUS_COUNTERS 36 #define NUM_SEND_DMA_ERR_STATUS_COUNTERS 4 #define NUM_SEND_EGRESS_ERR_STATUS_COUNTERS 64 #define NUM_SEND_ERR_STATUS_COUNTERS 3 #define NUM_SEND_CTXT_ERR_STATUS_COUNTERS 5 #define NUM_SEND_DMA_ENG_ERR_STATUS_COUNTERS 24 /* * per driver stats, either not device nor port-specific, or * summed over all of the devices and ports. * They are described by name via ipathfs filesystem, so layout * and number of elements can change without breaking compatibility. * If members are added or deleted hfi1_statnames[] in debugfs.c must * change to match. */ struct hfi1_ib_stats { __u64 sps_ints; /* number of interrupts handled */ __u64 sps_errints; /* number of error interrupts */ __u64 sps_txerrs; /* tx-related packet errors */ __u64 sps_rcverrs; /* non-crc rcv packet errors */ __u64 sps_hwerrs; /* hardware errors reported (parity, etc.) */ __u64 sps_nopiobufs; /* no pio bufs avail from kernel */ __u64 sps_ctxts; /* number of contexts currently open */ __u64 sps_lenerrs; /* number of kernel packets where RHF != LRH len */ __u64 sps_buffull; __u64 sps_hdrfull; }; extern struct hfi1_ib_stats hfi1_stats; extern const struct pci_error_handlers hfi1_pci_err_handler; /* * First-cut criterion 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 HFI1_TRAFFIC_ACTIVE_THRESHOLD (2000) /* * Below contains all data related to a single context (formerly called port). */ #ifdef CONFIG_DEBUG_FS struct hfi1_opcode_stats_perctx; #endif struct ctxt_eager_bufs { ssize_t size; /* total size of eager buffers */ u32 count; /* size of buffers array */ u32 numbufs; /* number of buffers allocated */ u32 alloced; /* number of rcvarray entries used */ u32 rcvtid_size; /* size of each eager rcv tid */ u32 threshold; /* head update threshold */ struct eager_buffer { void *addr; dma_addr_t phys; ssize_t len; } *buffers; struct { void *addr; dma_addr_t phys; } *rcvtids; }; struct exp_tid_set { struct list_head list; u32 count; }; struct hfi1_ctxtdata { /* shadow the ctxt's RcvCtrl register */ u64 rcvctrl; /* rcvhdrq base, needs mmap before useful */ void *rcvhdrq; /* kernel virtual address where hdrqtail is updated */ volatile __le64 *rcvhdrtail_kvaddr; /* * Shared page for kernel to signal user processes that send buffers * need disarming. The process should call HFI1_CMD_DISARM_BUFS * or HFI1_CMD_ACK_EVENT with IPATH_EVENT_DISARM_BUFS set. */ unsigned long *user_event_mask; /* when waiting for rcv or pioavail */ wait_queue_head_t wait; /* rcvhdrq size (for freeing) */ size_t rcvhdrq_size; /* number of rcvhdrq entries */ u16 rcvhdrq_cnt; /* size of each of the rcvhdrq entries */ u16 rcvhdrqentsize; /* mmap of hdrq, must fit in 44 bits */ dma_addr_t rcvhdrq_phys; dma_addr_t rcvhdrqtailaddr_phys; struct ctxt_eager_bufs egrbufs; /* this receive context's assigned PIO ACK send context */ struct send_context *sc; /* dynamic receive available interrupt timeout */ u32 rcvavail_timeout; /* * number of opens (including slave sub-contexts) on this instance * (ignoring forks, dup, etc. for now) */ int cnt; /* * how much space to leave at start of eager TID entries for * protocol use, on each TID */ /* instead of calculating it */ unsigned ctxt; /* non-zero if ctxt is being shared. */ u16 subctxt_cnt; /* non-zero if ctxt is being shared. */ u16 subctxt_id; u8 uuid[16]; /* job key */ u16 jkey; /* number of RcvArray groups for this context. */ u32 rcv_array_groups; /* index of first eager TID entry. */ u32 eager_base; /* number of expected TID entries */ u32 expected_count; /* index of first expected TID entry. */ u32 expected_base; struct exp_tid_set tid_group_list; struct exp_tid_set tid_used_list; struct exp_tid_set tid_full_list; /* lock protecting all Expected TID data */ struct mutex exp_lock; /* number of pio bufs for this ctxt (all procs, if shared) */ u32 piocnt; /* first pio buffer for this ctxt */ u32 pio_base; /* chip offset of PIO buffers for this ctxt */ u32 piobufs; /* per-context configuration flags */ u32 flags; /* per-context event flags for fileops/intr communication */ unsigned long event_flags; /* WAIT_RCV that timed out, no interrupt */ u32 rcvwait_to; /* WAIT_PIO that timed out, no interrupt */ u32 piowait_to; /* WAIT_RCV already happened, no wait */ u32 rcvnowait; /* WAIT_PIO already happened, no wait */ u32 pionowait; /* total number of polled urgent packets */ u32 urgent; /* saved total number of polled urgent packets for poll edge trigger */ u32 urgent_poll; /* pid of process using this ctxt */ pid_t pid; pid_t subpid[HFI1_MAX_SHARED_CTXTS]; /* same size as task_struct .comm[], command that opened context */ char comm[TASK_COMM_LEN]; /* so file ops can get at unit */ struct hfi1_devdata *dd; /* so functions that need physical port can get it easily */ struct hfi1_pportdata *ppd; /* A page of memory for rcvhdrhead, rcvegrhead, rcvegrtail * N */ void *subctxt_uregbase; /* An array of pages for the eager receive buffers * N */ void *subctxt_rcvegrbuf; /* An array of pages for the eager header queue entries * N */ void *subctxt_rcvhdr_base; /* The version of the library which opened this ctxt */ u32 userversion; /* Bitmask of active slaves */ u32 active_slaves; /* Type of packets or conditions we want to poll for */ u16 poll_type; /* receive packet sequence counter */ u8 seq_cnt; u8 redirect_seq_cnt; /* ctxt rcvhdrq head offset */ u32 head; u32 pkt_count; /* QPs waiting for context processing */ struct list_head qp_wait_list; /* interrupt handling */ u64 imask; /* clear interrupt mask */ int ireg; /* clear interrupt register */ unsigned numa_id; /* numa node of this context */ /* verbs stats per CTX */ struct hfi1_opcode_stats_perctx *opstats; /* * This is the kernel thread that will keep making * progress on the user sdma requests behind the scenes. * There is one per context (shared contexts use the master's). */ struct task_struct *progress; struct list_head sdma_queues; /* protect sdma queues */ spinlock_t sdma_qlock; /* Is ASPM interrupt supported for this context */ bool aspm_intr_supported; /* ASPM state (enabled/disabled) for this context */ bool aspm_enabled; /* Timer for re-enabling ASPM if interrupt activity quietens down */ struct timer_list aspm_timer; /* Lock to serialize between intr, timer intr and user threads */ spinlock_t aspm_lock; /* Is ASPM processing enabled for this context (in intr context) */ bool aspm_intr_enable; /* Last interrupt timestamp */ ktime_t aspm_ts_last_intr; /* Last timestamp at which we scheduled a timer for this context */ ktime_t aspm_ts_timer_sched; /* * The interrupt handler for a particular receive context can vary * throughout it's lifetime. This is not a lock protected data member so * it must be updated atomically and the prev and new value must always * be valid. Worst case is we process an extra interrupt and up to 64 * packets with the wrong interrupt handler. */ int (*do_interrupt)(struct hfi1_ctxtdata *rcd, int threaded); }; /* * Represents a single packet at a high level. Put commonly computed things in * here so we do not have to keep doing them over and over. The rule of thumb is * if something is used one time to derive some value, store that something in * here. If it is used multiple times, then store the result of that derivation * in here. */ struct hfi1_packet { void *ebuf; void *hdr; struct hfi1_ctxtdata *rcd; __le32 *rhf_addr; struct rvt_qp *qp; struct hfi1_other_headers *ohdr; u64 rhf; u32 maxcnt; u32 rhqoff; u32 hdrqtail; int numpkt; u16 tlen; u16 hlen; s16 etail; u16 rsize; u8 updegr; u8 rcv_flags; u8 etype; }; static inline bool has_sc4_bit(struct hfi1_packet *p) { return !!rhf_dc_info(p->rhf); } /* * Private data for snoop/capture support. */ struct hfi1_snoop_data { int mode_flag; struct cdev cdev; struct device *class_dev; /* protect snoop data */ spinlock_t snoop_lock; struct list_head queue; wait_queue_head_t waitq; void *filter_value; int (*filter_callback)(void *hdr, void *data, void *value); u64 dcc_cfg; /* saved value of DCC Cfg register */ }; /* snoop mode_flag values */ #define HFI1_PORT_SNOOP_MODE 1U #define HFI1_PORT_CAPTURE_MODE 2U struct rvt_sge_state; /* * Get/Set IB link-level config parameters for f_get/set_ib_cfg() * Mostly for MADs that set or query link parameters, also ipath * config interfaces */ #define HFI1_IB_CFG_LIDLMC 0 /* LID (LS16b) and Mask (MS16b) */ #define HFI1_IB_CFG_LWID_DG_ENB 1 /* allowed Link-width downgrade */ #define HFI1_IB_CFG_LWID_ENB 2 /* allowed Link-width */ #define HFI1_IB_CFG_LWID 3 /* currently active Link-width */ #define HFI1_IB_CFG_SPD_ENB 4 /* allowed Link speeds */ #define HFI1_IB_CFG_SPD 5 /* current Link spd */ #define HFI1_IB_CFG_RXPOL_ENB 6 /* Auto-RX-polarity enable */ #define HFI1_IB_CFG_LREV_ENB 7 /* Auto-Lane-reversal enable */ #define HFI1_IB_CFG_LINKLATENCY 8 /* Link Latency (IB1.2 only) */ #define HFI1_IB_CFG_HRTBT 9 /* IB heartbeat off/enable/auto; DDR/QDR only */ #define HFI1_IB_CFG_OP_VLS 10 /* operational VLs */ #define HFI1_IB_CFG_VL_HIGH_CAP 11 /* num of VL high priority weights */ #define HFI1_IB_CFG_VL_LOW_CAP 12 /* num of VL low priority weights */ #define HFI1_IB_CFG_OVERRUN_THRESH 13 /* IB overrun threshold */ #define HFI1_IB_CFG_PHYERR_THRESH 14 /* IB PHY error threshold */ #define HFI1_IB_CFG_LINKDEFAULT 15 /* IB link default (sleep/poll) */ #define HFI1_IB_CFG_PKEYS 16 /* update partition keys */ #define HFI1_IB_CFG_MTU 17 /* update MTU in IBC */ #define HFI1_IB_CFG_VL_HIGH_LIMIT 19 #define HFI1_IB_CFG_PMA_TICKS 20 /* PMA sample tick resolution */ #define HFI1_IB_CFG_PORT 21 /* switch port we are connected to */ /* * HFI or Host Link States * * These describe the states the driver thinks the logical and physical * states are in. Used as an argument to set_link_state(). Implemented * as bits for easy multi-state checking. The actual state can only be * one. */ #define __HLS_UP_INIT_BP 0 #define __HLS_UP_ARMED_BP 1 #define __HLS_UP_ACTIVE_BP 2 #define __HLS_DN_DOWNDEF_BP 3 /* link down default */ #define __HLS_DN_POLL_BP 4 #define __HLS_DN_DISABLE_BP 5 #define __HLS_DN_OFFLINE_BP 6 #define __HLS_VERIFY_CAP_BP 7 #define __HLS_GOING_UP_BP 8 #define __HLS_GOING_OFFLINE_BP 9 #define __HLS_LINK_COOLDOWN_BP 10 #define HLS_UP_INIT BIT(__HLS_UP_INIT_BP) #define HLS_UP_ARMED BIT(__HLS_UP_ARMED_BP) #define HLS_UP_ACTIVE BIT(__HLS_UP_ACTIVE_BP) #define HLS_DN_DOWNDEF BIT(__HLS_DN_DOWNDEF_BP) /* link down default */ #define HLS_DN_POLL BIT(__HLS_DN_POLL_BP) #define HLS_DN_DISABLE BIT(__HLS_DN_DISABLE_BP) #define HLS_DN_OFFLINE BIT(__HLS_DN_OFFLINE_BP) #define HLS_VERIFY_CAP BIT(__HLS_VERIFY_CAP_BP) #define HLS_GOING_UP BIT(__HLS_GOING_UP_BP) #define HLS_GOING_OFFLINE BIT(__HLS_GOING_OFFLINE_BP) #define HLS_LINK_COOLDOWN BIT(__HLS_LINK_COOLDOWN_BP) #define HLS_UP (HLS_UP_INIT | HLS_UP_ARMED | HLS_UP_ACTIVE) #define HLS_DOWN ~(HLS_UP) /* use this MTU size if none other is given */ #define HFI1_DEFAULT_ACTIVE_MTU 10240 /* use this MTU size as the default maximum */ #define HFI1_DEFAULT_MAX_MTU 10240 /* default partition key */ #define DEFAULT_PKEY 0xffff /* * Possible fabric manager config parameters for fm_{get,set}_table() */ #define FM_TBL_VL_HIGH_ARB 1 /* Get/set VL high prio weights */ #define FM_TBL_VL_LOW_ARB 2 /* Get/set VL low prio weights */ #define FM_TBL_BUFFER_CONTROL 3 /* Get/set Buffer Control */ #define FM_TBL_SC2VLNT 4 /* Get/set SC->VLnt */ #define FM_TBL_VL_PREEMPT_ELEMS 5 /* Get (no set) VL preempt elems */ #define FM_TBL_VL_PREEMPT_MATRIX 6 /* Get (no set) VL preempt matrix */ /* * Possible "operations" for f_rcvctrl(ppd, op, ctxt) * these are bits so they can be combined, e.g. * HFI1_RCVCTRL_INTRAVAIL_ENB | HFI1_RCVCTRL_CTXT_ENB */ #define HFI1_RCVCTRL_TAILUPD_ENB 0x01 #define HFI1_RCVCTRL_TAILUPD_DIS 0x02 #define HFI1_RCVCTRL_CTXT_ENB 0x04 #define HFI1_RCVCTRL_CTXT_DIS 0x08 #define HFI1_RCVCTRL_INTRAVAIL_ENB 0x10 #define HFI1_RCVCTRL_INTRAVAIL_DIS 0x20 #define HFI1_RCVCTRL_PKEY_ENB 0x40 /* Note, default is enabled */ #define HFI1_RCVCTRL_PKEY_DIS 0x80 #define HFI1_RCVCTRL_TIDFLOW_ENB 0x0400 #define HFI1_RCVCTRL_TIDFLOW_DIS 0x0800 #define HFI1_RCVCTRL_ONE_PKT_EGR_ENB 0x1000 #define HFI1_RCVCTRL_ONE_PKT_EGR_DIS 0x2000 #define HFI1_RCVCTRL_NO_RHQ_DROP_ENB 0x4000 #define HFI1_RCVCTRL_NO_RHQ_DROP_DIS 0x8000 #define HFI1_RCVCTRL_NO_EGR_DROP_ENB 0x10000 #define HFI1_RCVCTRL_NO_EGR_DROP_DIS 0x20000 /* partition enforcement flags */ #define HFI1_PART_ENFORCE_IN 0x1 #define HFI1_PART_ENFORCE_OUT 0x2 /* how often we check for synthetic counter wrap around */ #define SYNTH_CNT_TIME 2 /* Counter flags */ #define CNTR_NORMAL 0x0 /* Normal counters, just read register */ #define CNTR_SYNTH 0x1 /* Synthetic counters, saturate at all 1s */ #define CNTR_DISABLED 0x2 /* Disable this counter */ #define CNTR_32BIT 0x4 /* Simulate 64 bits for this counter */ #define CNTR_VL 0x8 /* Per VL counter */ #define CNTR_SDMA 0x10 #define CNTR_INVALID_VL -1 /* Specifies invalid VL */ #define CNTR_MODE_W 0x0 #define CNTR_MODE_R 0x1 /* VLs Supported/Operational */ #define HFI1_MIN_VLS_SUPPORTED 1 #define HFI1_MAX_VLS_SUPPORTED 8 static inline void incr_cntr64(u64 *cntr) { if (*cntr < (u64)-1LL) (*cntr)++; } static inline void incr_cntr32(u32 *cntr) { if (*cntr < (u32)-1LL) (*cntr)++; } #define MAX_NAME_SIZE 64 struct hfi1_msix_entry { enum irq_type type; struct msix_entry msix; void *arg; char name[MAX_NAME_SIZE]; cpumask_t mask; }; /* per-SL CCA information */ struct cca_timer { struct hrtimer hrtimer; struct hfi1_pportdata *ppd; /* read-only */ int sl; /* read-only */ u16 ccti; /* read/write - current value of CCTI */ }; struct link_down_reason { /* * SMA-facing value. Should be set from .latest when * HLS_UP_* -> HLS_DN_* transition actually occurs. */ u8 sma; u8 latest; }; enum { LO_PRIO_TABLE, HI_PRIO_TABLE, MAX_PRIO_TABLE }; struct vl_arb_cache { /* protect vl arb cache */ spinlock_t lock; struct ib_vl_weight_elem table[VL_ARB_TABLE_SIZE]; }; /* * The structure below encapsulates data relevant to a physical IB Port. * Current chips support only one such port, but the separation * clarifies things a bit. Note that to conform to IB conventions, * port-numbers are one-based. The first or only port is port1. */ struct hfi1_pportdata { struct hfi1_ibport ibport_data; struct hfi1_devdata *dd; struct kobject pport_cc_kobj; struct kobject sc2vl_kobj; struct kobject sl2sc_kobj; struct kobject vl2mtu_kobj; /* PHY support */ u32 port_type; struct qsfp_data qsfp_info; /* GUID for this interface, in host order */ u64 guid; /* GUID for peer interface, in host order */ u64 neighbor_guid; /* up or down physical link state */ u32 linkup; /* * this address is mapped read-only into user processes so they can * get status cheaply, whenever they want. One qword of status per port */ u64 *statusp; /* SendDMA related entries */ struct workqueue_struct *hfi1_wq; /* move out of interrupt context */ struct work_struct link_vc_work; struct work_struct link_up_work; struct work_struct link_down_work; struct work_struct sma_message_work; struct work_struct freeze_work; struct work_struct link_downgrade_work; struct work_struct link_bounce_work; /* host link state variables */ struct mutex hls_lock; u32 host_link_state; spinlock_t sdma_alllock ____cacheline_aligned_in_smp; u32 lstate; /* logical link state */ /* these are the "32 bit" regs */ u32 ibmtu; /* The MTU programmed for this unit */ /* * Current max size IB packet (in bytes) including IB headers, that * we can send. Changes when ibmtu changes. */ u32 ibmaxlen; u32 current_egress_rate; /* units [10^6 bits/sec] */ /* LID programmed for this instance */ u16 lid; /* list of pkeys programmed; 0 if not set */ u16 pkeys[MAX_PKEY_VALUES]; u16 link_width_supported; u16 link_width_downgrade_supported; u16 link_speed_supported; u16 link_width_enabled; u16 link_width_downgrade_enabled; u16 link_speed_enabled; u16 link_width_active; u16 link_width_downgrade_tx_active; u16 link_width_downgrade_rx_active; u16 link_speed_active; u8 vls_supported; u8 vls_operational; u8 actual_vls_operational; /* LID mask control */ u8 lmc; /* Rx Polarity inversion (compensate for ~tx on partner) */ u8 rx_pol_inv; u8 hw_pidx; /* physical port index */ u8 port; /* IB port number and index into dd->pports - 1 */ /* type of neighbor node */ u8 neighbor_type; u8 neighbor_normal; u8 neighbor_fm_security; /* 1 if firmware checking is disabled */ u8 neighbor_port_number; u8 is_sm_config_started; u8 offline_disabled_reason; u8 is_active_optimize_enabled; u8 driver_link_ready; /* driver ready for active link */ u8 link_enabled; /* link enabled? */ u8 linkinit_reason; u8 local_tx_rate; /* rate given to 8051 firmware */ u8 last_pstate; /* info only */ /* placeholders for IB MAD packet settings */ u8 overrun_threshold; u8 phy_error_threshold; /* Used to override LED behavior for things like maintenance beaconing*/ /* * Alternates per phase of blink * [0] holds LED off duration, [1] holds LED on duration */ unsigned long led_override_vals[2]; u8 led_override_phase; /* LSB picks from vals[] */ atomic_t led_override_timer_active; /* Used to flash LEDs in override mode */ struct timer_list led_override_timer; u32 sm_trap_qp; u32 sa_qp; /* * cca_timer_lock protects access to the per-SL cca_timer * structures (specifically the ccti member). */ spinlock_t cca_timer_lock ____cacheline_aligned_in_smp; struct cca_timer cca_timer[OPA_MAX_SLS]; /* List of congestion control table entries */ struct ib_cc_table_entry_shadow ccti_entries[CC_TABLE_SHADOW_MAX]; /* congestion entries, each entry corresponding to a SL */ struct opa_congestion_setting_entry_shadow congestion_entries[OPA_MAX_SLS]; /* * cc_state_lock protects (write) access to the per-port * struct cc_state. */ spinlock_t cc_state_lock ____cacheline_aligned_in_smp; struct cc_state __rcu *cc_state; /* Total number of congestion control table entries */ u16 total_cct_entry; /* Bit map identifying service level */ u32 cc_sl_control_map; /* CA's max number of 64 entry units in the congestion control table */ u8 cc_max_table_entries; /* * begin congestion log related entries * cc_log_lock protects all congestion log related data */ spinlock_t cc_log_lock ____cacheline_aligned_in_smp; u8 threshold_cong_event_map[OPA_MAX_SLS / 8]; u16 threshold_event_counter; struct opa_hfi1_cong_log_event_internal cc_events[OPA_CONG_LOG_ELEMS]; int cc_log_idx; /* index for logging events */ int cc_mad_idx; /* index for reporting events */ /* end congestion log related entries */ struct vl_arb_cache vl_arb_cache[MAX_PRIO_TABLE]; /* port relative counter buffer */ u64 *cntrs; /* port relative synthetic counter buffer */ u64 *scntrs; /* port_xmit_discards are synthesized from different egress errors */ u64 port_xmit_discards; u64 port_xmit_discards_vl[C_VL_COUNT]; u64 port_xmit_constraint_errors; u64 port_rcv_constraint_errors; /* count of 'link_err' interrupts from DC */ u64 link_downed; /* number of times link retrained successfully */ u64 link_up; /* number of times a link unknown frame was reported */ u64 unknown_frame_count; /* port_ltp_crc_mode is returned in 'portinfo' MADs */ u16 port_ltp_crc_mode; /* port_crc_mode_enabled is the crc we support */ u8 port_crc_mode_enabled; /* mgmt_allowed is also returned in 'portinfo' MADs */ u8 mgmt_allowed; u8 part_enforce; /* partition enforcement flags */ struct link_down_reason local_link_down_reason; struct link_down_reason neigh_link_down_reason; /* Value to be sent to link peer on LinkDown .*/ u8 remote_link_down_reason; /* Error events that will cause a port bounce. */ u32 port_error_action; struct work_struct linkstate_active_work; /* Does this port need to prescan for FECNs */ bool cc_prescan; }; typedef int (*rhf_rcv_function_ptr)(struct hfi1_packet *packet); typedef void (*opcode_handler)(struct hfi1_packet *packet); /* return values for the RHF receive functions */ #define RHF_RCV_CONTINUE 0 /* keep going */ #define RHF_RCV_DONE 1 /* stop, this packet processed */ #define RHF_RCV_REPROCESS 2 /* stop. retain this packet */ struct rcv_array_data { u8 group_size; u16 ngroups; u16 nctxt_extra; }; struct per_vl_data { u16 mtu; struct send_context *sc; }; /* 16 to directly index */ #define PER_VL_SEND_CONTEXTS 16 struct err_info_rcvport { u8 status_and_code; u64 packet_flit1; u64 packet_flit2; }; struct err_info_constraint { u8 status; u16 pkey; u32 slid; }; struct hfi1_temp { unsigned int curr; /* current temperature */ unsigned int lo_lim; /* low temperature limit */ unsigned int hi_lim; /* high temperature limit */ unsigned int crit_lim; /* critical temperature limit */ u8 triggers; /* temperature triggers */ }; /* common data between shared ASIC HFIs */ struct hfi1_asic_data { struct hfi1_devdata *dds[2]; /* back pointers */ struct mutex asic_resource_mutex; }; /* device data struct now contains only "general per-device" info. * fields related to a physical IB port are in a hfi1_pportdata struct. */ struct sdma_engine; struct sdma_vl_map; #define BOARD_VERS_MAX 96 /* how long the version string can be */ #define SERIAL_MAX 16 /* length of the serial number */ typedef int (*send_routine)(struct rvt_qp *, struct hfi1_pkt_state *, u64); struct hfi1_devdata { struct hfi1_ibdev verbs_dev; /* must be first */ struct list_head list; /* pointers to related structs for this device */ /* pci access data structure */ struct pci_dev *pcidev; struct cdev user_cdev; struct cdev diag_cdev; struct cdev ui_cdev; struct device *user_device; struct device *diag_device; struct device *ui_device; /* mem-mapped pointer to base of chip regs */ u8 __iomem *kregbase; /* end of mem-mapped chip space excluding sendbuf and user regs */ u8 __iomem *kregend; /* physical address of chip for io_remap, etc. */ resource_size_t physaddr; /* receive context data */ struct hfi1_ctxtdata **rcd; /* send context data */ struct send_context_info *send_contexts; /* map hardware send contexts to software index */ u8 *hw_to_sw; /* spinlock for allocating and releasing send context resources */ spinlock_t sc_lock; /* Per VL data. Enough for all VLs but not all elements are set/used. */ struct per_vl_data vld[PER_VL_SEND_CONTEXTS]; /* lock for pio_map */ spinlock_t pio_map_lock; /* array of kernel send contexts */ struct send_context **kernel_send_context; /* array of vl maps */ struct pio_vl_map __rcu *pio_map; /* seqlock for sc2vl */ seqlock_t sc2vl_lock; u64 sc2vl[4]; /* Send Context initialization lock. */ spinlock_t sc_init_lock; /* fields common to all SDMA engines */ /* default flags to last descriptor */ u64 default_desc1; volatile __le64 *sdma_heads_dma; /* DMA'ed by chip */ dma_addr_t sdma_heads_phys; void *sdma_pad_dma; /* DMA'ed by chip */ dma_addr_t sdma_pad_phys; /* for deallocation */ size_t sdma_heads_size; /* number from the chip */ u32 chip_sdma_engines; /* num used */ u32 num_sdma; /* lock for sdma_map */ spinlock_t sde_map_lock; /* array of engines sized by num_sdma */ struct sdma_engine *per_sdma; /* array of vl maps */ struct sdma_vl_map __rcu *sdma_map; /* SPC freeze waitqueue and variable */ wait_queue_head_t sdma_unfreeze_wq; atomic_t sdma_unfreeze_count; /* common data between shared ASIC HFIs in this OS */ struct hfi1_asic_data *asic_data; /* hfi1_pportdata, points to array of (physical) port-specific * data structs, indexed by pidx (0..n-1) */ struct hfi1_pportdata *pport; /* mem-mapped pointer to base of PIO buffers */ void __iomem *piobase; /* * write-combining mem-mapped pointer to base of RcvArray * memory. */ void __iomem *rcvarray_wc; /* * credit return base - a per-NUMA range of DMA address that * the chip will use to update the per-context free counter */ struct credit_return_base *cr_base; /* send context numbers and sizes for each type */ struct sc_config_sizes sc_sizes[SC_MAX]; u32 lcb_access_count; /* count of LCB users */ char *boardname; /* human readable board info */ /* device (not port) flags, basically device capabilities */ u32 flags; /* reset value */ u64 z_int_counter; u64 z_rcv_limit; u64 z_send_schedule; /* percpu int_counter */ u64 __percpu *int_counter; u64 __percpu *rcv_limit; u64 __percpu *send_schedule; /* number of receive contexts in use by the driver */ u32 num_rcv_contexts; /* number of pio send contexts in use by the driver */ u32 num_send_contexts; /* * number of ctxts available for PSM open */ u32 freectxts; /* total number of available user/PSM contexts */ u32 num_user_contexts; /* base receive interrupt timeout, in CSR units */ u32 rcv_intr_timeout_csr; u64 __iomem *egrtidbase; spinlock_t sendctrl_lock; /* protect changes to SendCtrl */ spinlock_t rcvctrl_lock; /* protect changes to RcvCtrl */ /* around rcd and (user ctxts) ctxt_cnt use (intr vs free) */ spinlock_t uctxt_lock; /* rcd and user context changes */ /* exclusive access to 8051 */ spinlock_t dc8051_lock; /* exclusive access to 8051 memory */ spinlock_t dc8051_memlock; int dc8051_timed_out; /* remember if the 8051 timed out */ /* * A page that will hold event notification bitmaps for all * contexts. This page will be mapped into all processes. */ unsigned long *events; /* * per unit status, see also portdata statusp * mapped read-only into user processes so they can get unit and * IB link status cheaply */ struct hfi1_status *status; u32 freezelen; /* max length of freezemsg */ /* revision register shadow */ u64 revision; /* Base GUID for device (network order) */ u64 base_guid; /* these are the "32 bit" regs */ /* value we put in kr_rcvhdrsize */ u32 rcvhdrsize; /* number of receive contexts the chip supports */ u32 chip_rcv_contexts; /* number of receive array entries */ u32 chip_rcv_array_count; /* number of PIO send contexts the chip supports */ u32 chip_send_contexts; /* number of bytes in the PIO memory buffer */ u32 chip_pio_mem_size; /* number of bytes in the SDMA memory buffer */ u32 chip_sdma_mem_size; /* size of each rcvegrbuffer */ u32 rcvegrbufsize; /* log2 of above */ u16 rcvegrbufsize_shift; /* both sides of the PCIe link are gen3 capable */ u8 link_gen3_capable; /* localbus width (1, 2,4,8,16,32) from config space */ u32 lbus_width; /* localbus speed in MHz */ u32 lbus_speed; int unit; /* unit # of this chip */ int node; /* home node of this chip */ /* save these PCI fields to restore after a reset */ u32 pcibar0; u32 pcibar1; u32 pci_rom; u16 pci_command; u16 pcie_devctl; u16 pcie_lnkctl; u16 pcie_devctl2; u32 pci_msix0; u32 pci_lnkctl3; u32 pci_tph2; /* * ASCII serial number, from flash, large enough for original * all digit strings, and longer serial number format */ u8 serial[SERIAL_MAX]; /* human readable board version */ u8 boardversion[BOARD_VERS_MAX]; u8 lbus_info[32]; /* human readable localbus info */ /* chip major rev, from CceRevision */ u8 majrev; /* chip minor rev, from CceRevision */ u8 minrev; /* hardware ID */ u8 hfi1_id; /* implementation code */ u8 icode; /* default link down value (poll/sleep) */ u8 link_default; /* vAU of this device */ u8 vau; /* vCU of this device */ u8 vcu; /* link credits of this device */ u16 link_credits; /* initial vl15 credits to use */ u16 vl15_init; /* Misc small ints */ /* Number of physical ports available */ u8 num_pports; /* Lowest context number which can be used by user processes */ u8 first_user_ctxt; u8 n_krcv_queues; u8 qos_shift; u8 qpn_mask; u16 rhf_offset; /* offset of RHF within receive header entry */ u16 irev; /* implementation revision */ u16 dc8051_ver; /* 8051 firmware version */ struct platform_config platform_config; struct platform_config_cache pcfg_cache; struct diag_client *diag_client; spinlock_t hfi1_diag_trans_lock; /* protect diag observer ops */ u8 psxmitwait_supported; /* cycle length of PS* counters in HW (in picoseconds) */ u16 psxmitwait_check_rate; /* high volume overflow errors deferred to tasklet */ struct tasklet_struct error_tasklet; /* MSI-X information */ struct hfi1_msix_entry *msix_entries; u32 num_msix_entries; /* INTx information */ u32 requested_intx_irq; /* did we request one? */ char intx_name[MAX_NAME_SIZE]; /* INTx name */ /* general interrupt: mask of handled interrupts */ u64 gi_mask[CCE_NUM_INT_CSRS]; struct rcv_array_data rcv_entries; /* * 64 bit synthetic counters */ struct timer_list synth_stats_timer; /* * device counters */ char *cntrnames; size_t cntrnameslen; size_t ndevcntrs; u64 *cntrs; u64 *scntrs; /* * remembered values for synthetic counters */ u64 last_tx; u64 last_rx; /* * per-port counters */ size_t nportcntrs; char *portcntrnames; size_t portcntrnameslen; struct hfi1_snoop_data hfi1_snoop; struct err_info_rcvport err_info_rcvport; struct err_info_constraint err_info_rcv_constraint; struct err_info_constraint err_info_xmit_constraint; u8 err_info_uncorrectable; u8 err_info_fmconfig; atomic_t drop_packet; u8 do_drop; /* * Software counters for the status bits defined by the * associated error status registers */ u64 cce_err_status_cnt[NUM_CCE_ERR_STATUS_COUNTERS]; u64 rcv_err_status_cnt[NUM_RCV_ERR_STATUS_COUNTERS]; u64 misc_err_status_cnt[NUM_MISC_ERR_STATUS_COUNTERS]; u64 send_pio_err_status_cnt[NUM_SEND_PIO_ERR_STATUS_COUNTERS]; u64 send_dma_err_status_cnt[NUM_SEND_DMA_ERR_STATUS_COUNTERS]; u64 send_egress_err_status_cnt[NUM_SEND_EGRESS_ERR_STATUS_COUNTERS]; u64 send_err_status_cnt[NUM_SEND_ERR_STATUS_COUNTERS]; /* Software counter that spans all contexts */ u64 sw_ctxt_err_status_cnt[NUM_SEND_CTXT_ERR_STATUS_COUNTERS]; /* Software counter that spans all DMA engines */ u64 sw_send_dma_eng_err_status_cnt[ NUM_SEND_DMA_ENG_ERR_STATUS_COUNTERS]; /* Software counter that aggregates all cce_err_status errors */ u64 sw_cce_err_status_aggregate; /* receive interrupt functions */ rhf_rcv_function_ptr *rhf_rcv_function_map; rhf_rcv_function_ptr normal_rhf_rcv_functions[8]; /* * Handlers for outgoing data so that snoop/capture does not * have to have its hooks in the send path */ send_routine process_pio_send; send_routine process_dma_send; void (*pio_inline_send)(struct hfi1_devdata *dd, struct pio_buf *pbuf, u64 pbc, const void *from, size_t count); /* OUI comes from the HW. Used everywhere as 3 separate bytes. */ u8 oui1; u8 oui2; u8 oui3; /* Timer and counter used to detect RcvBufOvflCnt changes */ struct timer_list rcverr_timer; u32 rcv_ovfl_cnt; wait_queue_head_t event_queue; /* Save the enabled LCB error bits */ u64 lcb_err_en; u8 dc_shutdown; /* receive context tail dummy address */ __le64 *rcvhdrtail_dummy_kvaddr; dma_addr_t rcvhdrtail_dummy_physaddr; bool eprom_available; /* true if EPROM is available for this device */ bool aspm_supported; /* Does HW support ASPM */ bool aspm_enabled; /* ASPM state: enabled/disabled */ /* Serialize ASPM enable/disable between multiple verbs contexts */ spinlock_t aspm_lock; /* Number of verbs contexts which have disabled ASPM */ atomic_t aspm_disabled_cnt; struct hfi1_affinity *affinity; struct kobject kobj; }; /* 8051 firmware version helper */ #define dc8051_ver(a, b) ((a) << 8 | (b)) /* f_put_tid types */ #define PT_EXPECTED 0 #define PT_EAGER 1 #define PT_INVALID 2 struct tid_rb_node; struct mmu_rb_node; /* Private data for file operations */ struct hfi1_filedata { struct hfi1_ctxtdata *uctxt; unsigned subctxt; struct hfi1_user_sdma_comp_q *cq; struct hfi1_user_sdma_pkt_q *pq; /* for cpu affinity; -1 if none */ int rec_cpu_num; u32 tid_n_pinned; struct rb_root tid_rb_root; struct tid_rb_node **entry_to_rb; spinlock_t tid_lock; /* protect tid_[limit,used] counters */ u32 tid_limit; u32 tid_used; u32 *invalid_tids; u32 invalid_tid_idx; /* protect invalid_tids array and invalid_tid_idx */ spinlock_t invalid_lock; }; extern struct list_head hfi1_dev_list; extern spinlock_t hfi1_devs_lock; struct hfi1_devdata *hfi1_lookup(int unit); extern u32 hfi1_cpulist_count; extern unsigned long *hfi1_cpulist; extern unsigned int snoop_drop_send; extern unsigned int snoop_force_capture; int hfi1_init(struct hfi1_devdata *, int); int hfi1_count_units(int *npresentp, int *nupp); int hfi1_count_active_units(void); int hfi1_diag_add(struct hfi1_devdata *); void hfi1_diag_remove(struct hfi1_devdata *); void handle_linkup_change(struct hfi1_devdata *dd, u32 linkup); void handle_user_interrupt(struct hfi1_ctxtdata *rcd); int hfi1_create_rcvhdrq(struct hfi1_devdata *, struct hfi1_ctxtdata *); int hfi1_setup_eagerbufs(struct hfi1_ctxtdata *); int hfi1_create_ctxts(struct hfi1_devdata *dd); struct hfi1_ctxtdata *hfi1_create_ctxtdata(struct hfi1_pportdata *, u32, int); void hfi1_init_pportdata(struct pci_dev *, struct hfi1_pportdata *, struct hfi1_devdata *, u8, u8); void hfi1_free_ctxtdata(struct hfi1_devdata *, struct hfi1_ctxtdata *); int handle_receive_interrupt(struct hfi1_ctxtdata *, int); int handle_receive_interrupt_nodma_rtail(struct hfi1_ctxtdata *, int); int handle_receive_interrupt_dma_rtail(struct hfi1_ctxtdata *, int); void set_all_slowpath(struct hfi1_devdata *dd); /* receive packet handler dispositions */ #define RCV_PKT_OK 0x0 /* keep going */ #define RCV_PKT_LIMIT 0x1 /* stop, hit limit, start thread */ #define RCV_PKT_DONE 0x2 /* stop, no more packets detected */ /* calculate the current RHF address */ static inline __le32 *get_rhf_addr(struct hfi1_ctxtdata *rcd) { return (__le32 *)rcd->rcvhdrq + rcd->head + rcd->dd->rhf_offset; } int hfi1_reset_device(int); /* return the driver's idea of the logical OPA port state */ static inline u32 driver_lstate(struct hfi1_pportdata *ppd) { return ppd->lstate; /* use the cached value */ } void receive_interrupt_work(struct work_struct *work); /* extract service channel from header and rhf */ static inline int hdr2sc(struct hfi1_message_header *hdr, u64 rhf) { return ((be16_to_cpu(hdr->lrh[0]) >> 12) & 0xf) | ((!!(rhf & RHF_DC_INFO_SMASK)) << 4); } static inline u16 generate_jkey(kuid_t uid) { return from_kuid(current_user_ns(), uid) & 0xffff; } /* * active_egress_rate * * returns the active egress rate in units of [10^6 bits/sec] */ static inline u32 active_egress_rate(struct hfi1_pportdata *ppd) { u16 link_speed = ppd->link_speed_active; u16 link_width = ppd->link_width_active; u32 egress_rate; if (link_speed == OPA_LINK_SPEED_25G) egress_rate = 25000; else /* assume OPA_LINK_SPEED_12_5G */ egress_rate = 12500; switch (link_width) { case OPA_LINK_WIDTH_4X: egress_rate *= 4; break; case OPA_LINK_WIDTH_3X: egress_rate *= 3; break; case OPA_LINK_WIDTH_2X: egress_rate *= 2; break; default: /* assume IB_WIDTH_1X */ break; } return egress_rate; } /* * egress_cycles * * Returns the number of 'fabric clock cycles' to egress a packet * of length 'len' bytes, at 'rate' Mbit/s. Since the fabric clock * rate is (approximately) 805 MHz, the units of the returned value * are (1/805 MHz). */ static inline u32 egress_cycles(u32 len, u32 rate) { u32 cycles; /* * cycles is: * * (length) [bits] / (rate) [bits/sec] * --------------------------------------------------- * fabric_clock_period == 1 /(805 * 10^6) [cycles/sec] */ cycles = len * 8; /* bits */ cycles *= 805; cycles /= rate; return cycles; } void set_link_ipg(struct hfi1_pportdata *ppd); void process_becn(struct hfi1_pportdata *ppd, u8 sl, u16 rlid, u32 lqpn, u32 rqpn, u8 svc_type); void return_cnp(struct hfi1_ibport *ibp, struct rvt_qp *qp, u32 remote_qpn, u32 pkey, u32 slid, u32 dlid, u8 sc5, const struct ib_grh *old_grh); #define PKEY_CHECK_INVALID -1 int egress_pkey_check(struct hfi1_pportdata *ppd, __be16 *lrh, __be32 *bth, u8 sc5, int8_t s_pkey_index); #define PACKET_EGRESS_TIMEOUT 350 static inline void pause_for_credit_return(struct hfi1_devdata *dd) { /* Pause at least 1us, to ensure chip returns all credits */ u32 usec = cclock_to_ns(dd, PACKET_EGRESS_TIMEOUT) / 1000; udelay(usec ? usec : 1); } /** * sc_to_vlt() reverse lookup sc to vl * @dd - devdata * @sc5 - 5 bit sc */ static inline u8 sc_to_vlt(struct hfi1_devdata *dd, u8 sc5) { unsigned seq; u8 rval; if (sc5 >= OPA_MAX_SCS) return (u8)(0xff); do { seq = read_seqbegin(&dd->sc2vl_lock); rval = *(((u8 *)dd->sc2vl) + sc5); } while (read_seqretry(&dd->sc2vl_lock, seq)); return rval; } #define PKEY_MEMBER_MASK 0x8000 #define PKEY_LOW_15_MASK 0x7fff /* * ingress_pkey_matches_entry - return 1 if the pkey matches ent (ent * being an entry from the ingress partition key table), return 0 * otherwise. Use the matching criteria for ingress partition keys * specified in the OPAv1 spec., section 9.10.14. */ static inline int ingress_pkey_matches_entry(u16 pkey, u16 ent) { u16 mkey = pkey & PKEY_LOW_15_MASK; u16 ment = ent & PKEY_LOW_15_MASK; if (mkey == ment) { /* * If pkey[15] is clear (limited partition member), * is bit 15 in the corresponding table element * clear (limited member)? */ if (!(pkey & PKEY_MEMBER_MASK)) return !!(ent & PKEY_MEMBER_MASK); return 1; } return 0; } /* * ingress_pkey_table_search - search the entire pkey table for * an entry which matches 'pkey'. return 0 if a match is found, * and 1 otherwise. */ static int ingress_pkey_table_search(struct hfi1_pportdata *ppd, u16 pkey) { int i; for (i = 0; i < MAX_PKEY_VALUES; i++) { if (ingress_pkey_matches_entry(pkey, ppd->pkeys[i])) return 0; } return 1; } /* * ingress_pkey_table_fail - record a failure of ingress pkey validation, * i.e., increment port_rcv_constraint_errors for the port, and record * the 'error info' for this failure. */ static void ingress_pkey_table_fail(struct hfi1_pportdata *ppd, u16 pkey, u16 slid) { struct hfi1_devdata *dd = ppd->dd; incr_cntr64(&ppd->port_rcv_constraint_errors); if (!(dd->err_info_rcv_constraint.status & OPA_EI_STATUS_SMASK)) { dd->err_info_rcv_constraint.status |= OPA_EI_STATUS_SMASK; dd->err_info_rcv_constraint.slid = slid; dd->err_info_rcv_constraint.pkey = pkey; } } /* * ingress_pkey_check - Return 0 if the ingress pkey is valid, return 1 * otherwise. Use the criteria in the OPAv1 spec, section 9.10.14. idx * is a hint as to the best place in the partition key table to begin * searching. This function should not be called on the data path because * of performance reasons. On datapath pkey check is expected to be done * by HW and rcv_pkey_check function should be called instead. */ static inline int ingress_pkey_check(struct hfi1_pportdata *ppd, u16 pkey, u8 sc5, u8 idx, u16 slid) { if (!(ppd->part_enforce & HFI1_PART_ENFORCE_IN)) return 0; /* If SC15, pkey[0:14] must be 0x7fff */ if ((sc5 == 0xf) && ((pkey & PKEY_LOW_15_MASK) != PKEY_LOW_15_MASK)) goto bad; /* Is the pkey = 0x0, or 0x8000? */ if ((pkey & PKEY_LOW_15_MASK) == 0) goto bad; /* The most likely matching pkey has index 'idx' */ if (ingress_pkey_matches_entry(pkey, ppd->pkeys[idx])) return 0; /* no match - try the whole table */ if (!ingress_pkey_table_search(ppd, pkey)) return 0; bad: ingress_pkey_table_fail(ppd, pkey, slid); return 1; } /* * rcv_pkey_check - Return 0 if the ingress pkey is valid, return 1 * otherwise. It only ensures pkey is vlid for QP0. This function * should be called on the data path instead of ingress_pkey_check * as on data path, pkey check is done by HW (except for QP0). */ static inline int rcv_pkey_check(struct hfi1_pportdata *ppd, u16 pkey, u8 sc5, u16 slid) { if (!(ppd->part_enforce & HFI1_PART_ENFORCE_IN)) return 0; /* If SC15, pkey[0:14] must be 0x7fff */ if ((sc5 == 0xf) && ((pkey & PKEY_LOW_15_MASK) != PKEY_LOW_15_MASK)) goto bad; return 0; bad: ingress_pkey_table_fail(ppd, pkey, slid); return 1; } /* MTU handling */ /* MTU enumeration, 256-4k match IB */ #define OPA_MTU_0 0 #define OPA_MTU_256 1 #define OPA_MTU_512 2 #define OPA_MTU_1024 3 #define OPA_MTU_2048 4 #define OPA_MTU_4096 5 u32 lrh_max_header_bytes(struct hfi1_devdata *dd); int mtu_to_enum(u32 mtu, int default_if_bad); u16 enum_to_mtu(int); static inline int valid_ib_mtu(unsigned int mtu) { return mtu == 256 || mtu == 512 || mtu == 1024 || mtu == 2048 || mtu == 4096; } static inline int valid_opa_max_mtu(unsigned int mtu) { return mtu >= 2048 && (valid_ib_mtu(mtu) || mtu == 8192 || mtu == 10240); } int set_mtu(struct hfi1_pportdata *); int hfi1_set_lid(struct hfi1_pportdata *, u32, u8); void hfi1_disable_after_error(struct hfi1_devdata *); int hfi1_set_uevent_bits(struct hfi1_pportdata *, const int); int hfi1_rcvbuf_validate(u32, u8, u16 *); int fm_get_table(struct hfi1_pportdata *, int, void *); int fm_set_table(struct hfi1_pportdata *, int, void *); void set_up_vl15(struct hfi1_devdata *dd, u8 vau, u16 vl15buf); void reset_link_credits(struct hfi1_devdata *dd); void assign_remote_cm_au_table(struct hfi1_devdata *dd, u8 vcu); int snoop_recv_handler(struct hfi1_packet *packet); int snoop_send_dma_handler(struct rvt_qp *qp, struct hfi1_pkt_state *ps, u64 pbc); int snoop_send_pio_handler(struct rvt_qp *qp, struct hfi1_pkt_state *ps, u64 pbc); void snoop_inline_pio_send(struct hfi1_devdata *dd, struct pio_buf *pbuf, u64 pbc, const void *from, size_t count); int set_buffer_control(struct hfi1_pportdata *ppd, struct buffer_control *bc); static inline struct hfi1_devdata *dd_from_ppd(struct hfi1_pportdata *ppd) { return ppd->dd; } static inline struct hfi1_devdata *dd_from_dev(struct hfi1_ibdev *dev) { return container_of(dev, struct hfi1_devdata, verbs_dev); } static inline struct hfi1_devdata *dd_from_ibdev(struct ib_device *ibdev) { return dd_from_dev(to_idev(ibdev)); } static inline struct hfi1_pportdata *ppd_from_ibp(struct hfi1_ibport *ibp) { return container_of(ibp, struct hfi1_pportdata, ibport_data); } static inline struct hfi1_ibdev *dev_from_rdi(struct rvt_dev_info *rdi) { return container_of(rdi, struct hfi1_ibdev, rdi); } static inline struct hfi1_ibport *to_iport(struct ib_device *ibdev, u8 port) { struct hfi1_devdata *dd = dd_from_ibdev(ibdev); unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ WARN_ON(pidx >= dd->num_pports); return &dd->pport[pidx].ibport_data; } /* * Return the indexed PKEY from the port PKEY table. */ static inline u16 hfi1_get_pkey(struct hfi1_ibport *ibp, unsigned index) { struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); u16 ret; if (index >= ARRAY_SIZE(ppd->pkeys)) ret = 0; else ret = ppd->pkeys[index]; return ret; } /* * Readers of cc_state must call get_cc_state() under rcu_read_lock(). * Writers of cc_state must call get_cc_state() under cc_state_lock. */ static inline struct cc_state *get_cc_state(struct hfi1_pportdata *ppd) { return rcu_dereference(ppd->cc_state); } /* * values for dd->flags (_device_ related flags) */ #define HFI1_INITTED 0x1 /* chip and driver up and initted */ #define HFI1_PRESENT 0x2 /* chip accesses can be done */ #define HFI1_FROZEN 0x4 /* chip in SPC freeze */ #define HFI1_HAS_SDMA_TIMEOUT 0x8 #define HFI1_HAS_SEND_DMA 0x10 /* Supports Send DMA */ #define HFI1_FORCED_FREEZE 0x80 /* driver forced freeze mode */ /* IB dword length mask in PBC (lower 11 bits); same for all chips */ #define HFI1_PBC_LENGTH_MASK ((1 << 11) - 1) /* ctxt_flag bit offsets */ /* context has been setup */ #define HFI1_CTXT_SETUP_DONE 1 /* waiting for a packet to arrive */ #define HFI1_CTXT_WAITING_RCV 2 /* master has not finished initializing */ #define HFI1_CTXT_MASTER_UNINIT 4 /* waiting for an urgent packet to arrive */ #define HFI1_CTXT_WAITING_URG 5 /* free up any allocated data at closes */ struct hfi1_devdata *hfi1_init_dd(struct pci_dev *, const struct pci_device_id *); void hfi1_free_devdata(struct hfi1_devdata *); void cc_state_reclaim(struct rcu_head *rcu); struct hfi1_devdata *hfi1_alloc_devdata(struct pci_dev *pdev, size_t extra); /* LED beaconing functions */ void hfi1_start_led_override(struct hfi1_pportdata *ppd, unsigned int timeon, unsigned int timeoff); void shutdown_led_override(struct hfi1_pportdata *ppd); #define HFI1_CREDIT_RETURN_RATE (100) /* * The number of words for the KDETH protocol field. If this is * larger then the actual field used, then part of the payload * will be in the header. * * Optimally, we want this sized so that a typical case will * use full cache lines. The typical local KDETH header would * be: * * Bytes Field * 8 LRH * 12 BHT * ?? KDETH * 8 RHF * --- * 28 + KDETH * * For a 64-byte cache line, KDETH would need to be 36 bytes or 9 DWORDS */ #define DEFAULT_RCVHDRSIZE 9 /* * Maximal header byte count: * * Bytes Field * 8 LRH * 40 GRH (optional) * 12 BTH * ?? KDETH * 8 RHF * --- * 68 + KDETH * * We also want to maintain a cache line alignment to assist DMA'ing * of the header bytes. Round up to a good size. */ #define DEFAULT_RCVHDR_ENTSIZE 32 bool hfi1_can_pin_pages(struct hfi1_devdata *, u32, u32); int hfi1_acquire_user_pages(unsigned long, size_t, bool, struct page **); void hfi1_release_user_pages(struct mm_struct *, struct page **, size_t, bool); static inline void clear_rcvhdrtail(const struct hfi1_ctxtdata *rcd) { *((u64 *)rcd->rcvhdrtail_kvaddr) = 0ULL; } static inline u32 get_rcvhdrtail(const struct hfi1_ctxtdata *rcd) { /* * volatile because it's a DMA target from the chip, routine is * inlined, and don't want register caching or reordering. */ return (u32)le64_to_cpu(*rcd->rcvhdrtail_kvaddr); } /* * sysfs interface. */ extern const char ib_hfi1_version[]; int hfi1_device_create(struct hfi1_devdata *); void hfi1_device_remove(struct hfi1_devdata *); int hfi1_create_port_files(struct ib_device *ibdev, u8 port_num, struct kobject *kobj); int hfi1_verbs_register_sysfs(struct hfi1_devdata *); void hfi1_verbs_unregister_sysfs(struct hfi1_devdata *); /* Hook for sysfs read of QSFP */ int qsfp_dump(struct hfi1_pportdata *ppd, char *buf, int len); int hfi1_pcie_init(struct pci_dev *, const struct pci_device_id *); void hfi1_pcie_cleanup(struct pci_dev *); int hfi1_pcie_ddinit(struct hfi1_devdata *, struct pci_dev *, const struct pci_device_id *); void hfi1_pcie_ddcleanup(struct hfi1_devdata *); void hfi1_pcie_flr(struct hfi1_devdata *); int pcie_speeds(struct hfi1_devdata *); void request_msix(struct hfi1_devdata *, u32 *, struct hfi1_msix_entry *); void hfi1_enable_intx(struct pci_dev *); void restore_pci_variables(struct hfi1_devdata *dd); int do_pcie_gen3_transition(struct hfi1_devdata *dd); int parse_platform_config(struct hfi1_devdata *dd); int get_platform_config_field(struct hfi1_devdata *dd, enum platform_config_table_type_encoding table_type, int table_index, int field_index, u32 *data, u32 len); const char *get_unit_name(int unit); const char *get_card_name(struct rvt_dev_info *rdi); struct pci_dev *get_pci_dev(struct rvt_dev_info *rdi); /* * Flush write combining store buffers (if present) and perform a write * barrier. */ static inline void flush_wc(void) { asm volatile("sfence" : : : "memory"); } void handle_eflags(struct hfi1_packet *packet); int process_receive_ib(struct hfi1_packet *packet); int process_receive_bypass(struct hfi1_packet *packet); int process_receive_error(struct hfi1_packet *packet); int kdeth_process_expected(struct hfi1_packet *packet); int kdeth_process_eager(struct hfi1_packet *packet); int process_receive_invalid(struct hfi1_packet *packet); extern rhf_rcv_function_ptr snoop_rhf_rcv_functions[8]; void update_sge(struct rvt_sge_state *ss, u32 length); /* global module parameter variables */ extern unsigned int hfi1_max_mtu; extern unsigned int hfi1_cu; extern unsigned int user_credit_return_threshold; extern int num_user_contexts; extern unsigned n_krcvqs; extern uint krcvqs[]; extern int krcvqsset; extern uint kdeth_qp; extern uint loopback; extern uint quick_linkup; extern uint rcv_intr_timeout; extern uint rcv_intr_count; extern uint rcv_intr_dynamic; extern ushort link_crc_mask; extern struct mutex hfi1_mutex; /* Number of seconds before our card status check... */ #define STATUS_TIMEOUT 60 #define DRIVER_NAME "hfi1" #define HFI1_USER_MINOR_BASE 0 #define HFI1_TRACE_MINOR 127 #define HFI1_DIAGPKT_MINOR 128 #define HFI1_DIAG_MINOR_BASE 129 #define HFI1_SNOOP_CAPTURE_BASE 200 #define HFI1_NMINORS 255 #define PCI_VENDOR_ID_INTEL 0x8086 #define PCI_DEVICE_ID_INTEL0 0x24f0 #define PCI_DEVICE_ID_INTEL1 0x24f1 #define HFI1_PKT_USER_SC_INTEGRITY \ (SEND_CTXT_CHECK_ENABLE_DISALLOW_NON_KDETH_PACKETS_SMASK \ | SEND_CTXT_CHECK_ENABLE_DISALLOW_KDETH_PACKETS_SMASK \ | SEND_CTXT_CHECK_ENABLE_DISALLOW_BYPASS_SMASK \ | SEND_CTXT_CHECK_ENABLE_DISALLOW_GRH_SMASK) #define HFI1_PKT_KERNEL_SC_INTEGRITY \ (SEND_CTXT_CHECK_ENABLE_DISALLOW_KDETH_PACKETS_SMASK) static inline u64 hfi1_pkt_default_send_ctxt_mask(struct hfi1_devdata *dd, u16 ctxt_type) { u64 base_sc_integrity = SEND_CTXT_CHECK_ENABLE_DISALLOW_BYPASS_BAD_PKT_LEN_SMASK | SEND_CTXT_CHECK_ENABLE_DISALLOW_PBC_STATIC_RATE_CONTROL_SMASK | SEND_CTXT_CHECK_ENABLE_DISALLOW_TOO_LONG_BYPASS_PACKETS_SMASK | SEND_CTXT_CHECK_ENABLE_DISALLOW_TOO_LONG_IB_PACKETS_SMASK | SEND_CTXT_CHECK_ENABLE_DISALLOW_BAD_PKT_LEN_SMASK | SEND_CTXT_CHECK_ENABLE_DISALLOW_PBC_TEST_SMASK | SEND_CTXT_CHECK_ENABLE_DISALLOW_TOO_SMALL_BYPASS_PACKETS_SMASK | SEND_CTXT_CHECK_ENABLE_DISALLOW_TOO_SMALL_IB_PACKETS_SMASK | SEND_CTXT_CHECK_ENABLE_DISALLOW_RAW_IPV6_SMASK | SEND_CTXT_CHECK_ENABLE_DISALLOW_RAW_SMASK | SEND_CTXT_CHECK_ENABLE_CHECK_BYPASS_VL_MAPPING_SMASK | SEND_CTXT_CHECK_ENABLE_CHECK_VL_MAPPING_SMASK | SEND_CTXT_CHECK_ENABLE_CHECK_OPCODE_SMASK | SEND_CTXT_CHECK_ENABLE_CHECK_SLID_SMASK | SEND_CTXT_CHECK_ENABLE_CHECK_JOB_KEY_SMASK | SEND_CTXT_CHECK_ENABLE_CHECK_VL_SMASK | SEND_CTXT_CHECK_ENABLE_CHECK_ENABLE_SMASK; if (ctxt_type == SC_USER) base_sc_integrity |= HFI1_PKT_USER_SC_INTEGRITY; else base_sc_integrity |= HFI1_PKT_KERNEL_SC_INTEGRITY; if (is_ax(dd)) /* turn off send-side job key checks - A0 */ return base_sc_integrity & ~SEND_CTXT_CHECK_ENABLE_CHECK_JOB_KEY_SMASK; return base_sc_integrity; } static inline u64 hfi1_pkt_base_sdma_integrity(struct hfi1_devdata *dd) { u64 base_sdma_integrity = SEND_DMA_CHECK_ENABLE_DISALLOW_BYPASS_BAD_PKT_LEN_SMASK | SEND_DMA_CHECK_ENABLE_DISALLOW_PBC_STATIC_RATE_CONTROL_SMASK | SEND_DMA_CHECK_ENABLE_DISALLOW_TOO_LONG_BYPASS_PACKETS_SMASK | SEND_DMA_CHECK_ENABLE_DISALLOW_TOO_LONG_IB_PACKETS_SMASK | SEND_DMA_CHECK_ENABLE_DISALLOW_BAD_PKT_LEN_SMASK | SEND_DMA_CHECK_ENABLE_DISALLOW_TOO_SMALL_BYPASS_PACKETS_SMASK | SEND_DMA_CHECK_ENABLE_DISALLOW_TOO_SMALL_IB_PACKETS_SMASK | SEND_DMA_CHECK_ENABLE_DISALLOW_RAW_IPV6_SMASK | SEND_DMA_CHECK_ENABLE_DISALLOW_RAW_SMASK | SEND_DMA_CHECK_ENABLE_CHECK_BYPASS_VL_MAPPING_SMASK | SEND_DMA_CHECK_ENABLE_CHECK_VL_MAPPING_SMASK | SEND_DMA_CHECK_ENABLE_CHECK_OPCODE_SMASK | SEND_DMA_CHECK_ENABLE_CHECK_SLID_SMASK | SEND_DMA_CHECK_ENABLE_CHECK_JOB_KEY_SMASK | SEND_DMA_CHECK_ENABLE_CHECK_VL_SMASK | SEND_DMA_CHECK_ENABLE_CHECK_ENABLE_SMASK; if (is_ax(dd)) /* turn off send-side job key checks - A0 */ return base_sdma_integrity & ~SEND_DMA_CHECK_ENABLE_CHECK_JOB_KEY_SMASK; return base_sdma_integrity; } /* * hfi1_early_err is used (only!) to print early errors before devdata is * allocated, or when dd->pcidev may not be valid, and at the tail end of * cleanup when devdata may have been freed, etc. hfi1_dev_porterr is * the same as dd_dev_err, but is used when the message really needs * the IB port# to be definitive as to what's happening.. */ #define hfi1_early_err(dev, fmt, ...) \ dev_err(dev, fmt, ##__VA_ARGS__) #define hfi1_early_info(dev, fmt, ...) \ dev_info(dev, fmt, ##__VA_ARGS__) #define dd_dev_emerg(dd, fmt, ...) \ dev_emerg(&(dd)->pcidev->dev, "%s: " fmt, \ get_unit_name((dd)->unit), ##__VA_ARGS__) #define dd_dev_err(dd, fmt, ...) \ dev_err(&(dd)->pcidev->dev, "%s: " fmt, \ get_unit_name((dd)->unit), ##__VA_ARGS__) #define dd_dev_warn(dd, fmt, ...) \ dev_warn(&(dd)->pcidev->dev, "%s: " fmt, \ get_unit_name((dd)->unit), ##__VA_ARGS__) #define dd_dev_warn_ratelimited(dd, fmt, ...) \ dev_warn_ratelimited(&(dd)->pcidev->dev, "%s: " fmt, \ get_unit_name((dd)->unit), ##__VA_ARGS__) #define dd_dev_info(dd, fmt, ...) \ dev_info(&(dd)->pcidev->dev, "%s: " fmt, \ get_unit_name((dd)->unit), ##__VA_ARGS__) #define dd_dev_dbg(dd, fmt, ...) \ dev_dbg(&(dd)->pcidev->dev, "%s: " fmt, \ get_unit_name((dd)->unit), ##__VA_ARGS__) #define hfi1_dev_porterr(dd, port, fmt, ...) \ dev_err(&(dd)->pcidev->dev, "%s: port %u: " fmt, \ get_unit_name((dd)->unit), (port), ##__VA_ARGS__) /* * this is used for formatting hw error messages... */ struct hfi1_hwerror_msgs { u64 mask; const char *msg; size_t sz; }; /* in intr.c... */ void hfi1_format_hwerrors(u64 hwerrs, const struct hfi1_hwerror_msgs *hwerrmsgs, size_t nhwerrmsgs, char *msg, size_t lmsg); #define USER_OPCODE_CHECK_VAL 0xC0 #define USER_OPCODE_CHECK_MASK 0xC0 #define OPCODE_CHECK_VAL_DISABLED 0x0 #define OPCODE_CHECK_MASK_DISABLED 0x0 static inline void hfi1_reset_cpu_counters(struct hfi1_devdata *dd) { struct hfi1_pportdata *ppd; int i; dd->z_int_counter = get_all_cpu_total(dd->int_counter); dd->z_rcv_limit = get_all_cpu_total(dd->rcv_limit); dd->z_send_schedule = get_all_cpu_total(dd->send_schedule); ppd = (struct hfi1_pportdata *)(dd + 1); for (i = 0; i < dd->num_pports; i++, ppd++) { ppd->ibport_data.rvp.z_rc_acks = get_all_cpu_total(ppd->ibport_data.rvp.rc_acks); ppd->ibport_data.rvp.z_rc_qacks = get_all_cpu_total(ppd->ibport_data.rvp.rc_qacks); } } /* Control LED state */ static inline void setextled(struct hfi1_devdata *dd, u32 on) { if (on) write_csr(dd, DCC_CFG_LED_CNTRL, 0x1F); else write_csr(dd, DCC_CFG_LED_CNTRL, 0x10); } /* return the i2c resource given the target */ static inline u32 i2c_target(u32 target) { return target ? CR_I2C2 : CR_I2C1; } /* return the i2c chain chip resource that this HFI uses for QSFP */ static inline u32 qsfp_resource(struct hfi1_devdata *dd) { return i2c_target(dd->hfi1_id); } int hfi1_tempsense_rd(struct hfi1_devdata *dd, struct hfi1_temp *temp); #endif /* _HFI1_KERNEL_H */