#ifndef _IPATH_KERNEL_H
#define _IPATH_KERNEL_H
/*
- * Copyright (c) 2006 QLogic, Inc. All rights reserved.
+ * 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
*/
#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/mutex.h>
#include <asm/io.h>
+#include <rdma/ib_verbs.h>
#include "ipath_common.h"
#include "ipath_debug.h"
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;
/* rcvhdrq base, needs mmap before useful */
void *port_rcvhdrq;
/* kernel virtual address where hdrqtail is updated */
- volatile __le64 *port_rcvhdrtail_kvaddr;
+ void *port_rcvhdrtail_kvaddr;
/*
* temp buffer for expected send setup, allocated at open, instead
* of each setup call
dma_addr_t port_rcvhdrq_phys;
dma_addr_t port_rcvhdrqtailaddr_phys;
/*
- * number of opens on this instance (0 or 1; ignoring forks, dup,
- * etc. for now)
+ * number of opens (including slave subports) on this instance
+ * (ignoring forks, dup, etc. for now)
*/
int port_cnt;
/*
*/
/* 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_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_pionowait;
/* total number of rcvhdrqfull errors */
u32 port_hdrqfull;
+ /* 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;
/* same size as task_struct .comm[] */
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;
};
struct sk_buff;
void *l_arg;
};
-/* Verbs layer interface */
-struct _verbs_layer {
- void *l_arg;
- struct timer_list l_timer;
+struct ipath_skbinfo {
+ struct sk_buff *skb;
+ dma_addr_t phys;
};
struct ipath_devdata {
/* ipath_cfgports pointers */
struct ipath_portdata **ipath_pd;
/* sk_buffs used by port 0 eager receive queue */
- struct sk_buff **ipath_port0_skbs;
+ 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 (*ipath_f_setextled)(struct ipath_devdata *, u64, u64);
/* fill out chip-specific fields */
int (*ipath_f_get_base_info)(struct ipath_portdata *, void *);
- struct _verbs_layer verbs_layer;
+ /* free irq */
+ void (*ipath_f_free_irq)(struct ipath_devdata *);
+ 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) */
* limiting of hwerror reporting
*/
ipath_err_t ipath_lasthwerror;
- /*
- * errors masked because they occur too fast, also includes errors
- * that are always ignored (ipath_ignorederrs)
- */
+ /* errors masked because they occur too fast */
ipath_err_t ipath_maskederrs;
/* time in jiffies at which to re-enable maskederrs */
unsigned long ipath_unmasktime;
- /*
- * errors always ignored (masked), at least for a given
- * chip/device, because they are wrong or not useful
- */
- ipath_err_t ipath_ignorederrs;
/* count of egrfull errors, combined for all ports */
u64 ipath_last_tidfull;
/* for ipath_qcheck() */
u64 ipath_tidtemplate;
/* value to write to free TIDs */
u64 ipath_tidinvalid;
- /* PE-800 rcv interrupt setup */
+ /* IBA6120 rcv interrupt setup */
u64 ipath_rhdrhead_intr_off;
/* size of memory at ipath_kregbase */
u32 ipath_pioavregs;
/* IPATH_POLL, etc. */
u32 ipath_flags;
- /* ipath_flags sma is waiting for */
- u32 ipath_sma_state_wanted;
+ /* 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_pcibar0;
/* so we can rewrite it after a chip reset */
u32 ipath_pcibar1;
- /* sequential tries for SMA send and no bufs */
- u32 ipath_nosma_bufs;
- /* duration (seconds) ipath_nosma_bufs set */
- u32 ipath_nosma_secs;
+ /* interrupt number */
+ int ipath_irq;
/* HT/PCI Vendor ID (here for NodeInfo) */
u16 ipath_vendorid;
/* HT/PCI Device ID (here for NodeInfo) */
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 all exptids physaddr; used only by funcsim */
u64 *ipath_tidsimshadow;
/* 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;
/* lock to workaround chip bug 9437 */
spinlock_t ipath_tid_lock;
+ spinlock_t ipath_sendctrl_lock;
/*
* IPATH_STATUS_*,
struct class_device *diag_class_dev;
/* timer used to prevent stats overflow, error throttling, etc. */
struct timer_list ipath_stats_timer;
- /* check for stale messages in rcv queue */
- /* only allow one intr at a time. */
- unsigned long ipath_rcv_pending;
void *ipath_dummy_hdrq; /* used after port close */
dma_addr_t ipath_dummy_hdrq_phys;
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;
/*
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 */
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;
u32 ipath_cregbase;
/* shadow the control register contents */
u32 ipath_control;
- /* shadow the gpio output contents */
- u32 ipath_extctrl;
/* PCI revision register (HTC rev on FPGA) */
u32 ipath_pcirev;
u32 ipath_htwidth;
/* HT speed (200,400,800,1000) from HT config */
u32 ipath_htspeed;
- /* ports waiting for PIOavail intr */
- unsigned long ipath_portpiowait;
/*
* number of sequential ibcstatus change for polling active/quiet
* (i.e., link not coming up).
u8 ipath_pci_cacheline;
/* LID mask control */
u8 ipath_lmc;
+ /* 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;
+
+ /*
+ * 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;
+
+ /* 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];
};
+/* 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);
-extern u16 ipath_layer_rcv_opcode;
-extern int __ipath_layer_intr(struct ipath_devdata *, u32);
-extern int ipath_layer_intr(struct ipath_devdata *, u32);
-extern int __ipath_layer_rcv(struct ipath_devdata *, void *,
- struct sk_buff *);
-extern int __ipath_layer_rcv_lid(struct ipath_devdata *, void *);
-extern int __ipath_verbs_piobufavail(struct ipath_devdata *);
-extern int __ipath_verbs_rcv(struct ipath_devdata *, void *, void *, u32);
-
-void ipath_layer_add(struct ipath_devdata *);
-void ipath_layer_remove(struct ipath_devdata *);
-
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, u32 *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, struct file_operations *fops,
+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 *);
-void ipath_diag_bringup_link(struct ipath_devdata *);
-extern wait_queue_head_t ipath_sma_state_wait;
+extern wait_queue_head_t ipath_state_wait;
int ipath_user_add(struct ipath_devdata *dd);
void ipath_user_remove(struct ipath_devdata *dd);
extern int ipath_diag_inuse;
-irqreturn_t ipath_intr(int irq, void *devid, struct pt_regs *regs);
-void ipath_decode_err(char *buf, size_t blen, ipath_err_t err);
+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
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);
-int ipath_wait_linkstate(struct ipath_devdata *, u32, int);
-void ipath_set_ib_lstate(struct ipath_devdata *, int);
void ipath_kreceive(struct ipath_devdata *);
int ipath_setrcvhdrsize(struct ipath_devdata *, unsigned);
int ipath_reset_device(int);
void ipath_get_faststats(unsigned long);
+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);
/* for use in system calls, where we want to know device type, etc. */
-#define port_fp(fp) ((struct ipath_portdata *) (fp)->private_data)
+#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
#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
* are 64bit */
#define IPATH_32BITCOUNTERS 0x20000
/* can miss port0 rx interrupts */
-#define IPATH_POLL_RX_INTR 0x40000
#define IPATH_DISABLED 0x80000 /* administratively disabled */
+ /* Use GPIO interrupts for new counters */
+#define IPATH_GPIO_ERRINTRS 0x100000
+
+/* 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
- /* waiting for a PIO buffer to be available */
-#define IPATH_PORT_WAITING_PIO 3
+ /* 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);
int ipath_waitfor_mdio_cmdready(struct ipath_devdata *);
int ipath_waitfor_complete(struct ipath_devdata *, ipath_kreg, u64, u64 *);
u32 __iomem *ipath_getpiobuf(struct ipath_devdata *, u32 *);
-/* init PE-800-specific func */
-void ipath_init_pe800_funcs(struct ipath_devdata *);
-/* init HT-400-specific func */
-void ipath_init_ht400_funcs(struct ipath_devdata *);
+void ipath_init_iba6120_funcs(struct ipath_devdata *);
+void ipath_init_iba6110_funcs(struct ipath_devdata *);
void ipath_get_eeprom_info(struct ipath_devdata *);
+int ipath_update_eeprom_log(struct ipath_devdata *dd);
+void ipath_inc_eeprom_err(struct ipath_devdata *dd, u32 eidx, u32 incr);
u64 ipath_snap_cntr(struct ipath_devdata *, ipath_creg);
+void 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_MDIO_CTRL_8355_REG_10 0x1D
int ipath_get_user_pages(unsigned long, size_t, struct page **);
-int ipath_get_user_pages_nocopy(unsigned long, 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);
/* these are used for the registers that vary with port */
void ipath_write_kreg_port(const struct ipath_devdata *, ipath_kreg,
unsigned, u64);
-u64 ipath_read_kreg64_port(const struct ipath_devdata *, ipath_kreg,
- unsigned);
/*
* We could have a single register get/put routine, that takes a group type,
struct device_driver;
-extern const char ipath_core_version[];
+extern const char ib_ipath_version[];
-int ipath_driver_create_group(struct device_driver *);
-void ipath_driver_remove_group(struct device_driver *);
+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 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.
extern unsigned ipath_debug; /* debugging bit mask */
+#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 "ipath_core"
+#define IPATH_DRV_NAME "ib_ipath"
#define IPATH_MAJOR 233
#define IPATH_USER_MINOR_BASE 0
-#define IPATH_SMA_MINOR 128
+#define IPATH_DIAGPKT_MINOR 127
#define IPATH_DIAG_MINOR_BASE 129
#define IPATH_NMINORS 255
#endif /* _IPATH_DEBUGGING */
+/*
+ * this is used for formatting hw error messages...
+ */
+struct ipath_hwerror_msgs {
+ u64 mask;
+ const char *msg;
+};
+
+#define INFINIPATH_HWE_MSG(a, b) { .mask = INFINIPATH_HWE_##a, .msg = b }
+
+/* in ipath_intr.c... */
+void ipath_format_hwerrors(u64 hwerrs,
+ const struct ipath_hwerror_msgs *hwerrmsgs,
+ size_t nhwerrmsgs,
+ char *msg, size_t lmsg);
+
#endif /* _IPATH_KERNEL_H */
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