3695 lines
94 KiB
C
3695 lines
94 KiB
C
/**
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* Copyright (c) 1997 by Simon Shapiro
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* All Rights Reserved
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/**
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* dpt_scsi.c: SCSI dependant code for the DPT driver
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*
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* credits: Assisted by Mike Neuffer in the early low level DPT code
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* Thanx to Mark Salyzyn of DPT for his assistance.
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* Special thanx to Justin Gibbs for invaluable help in
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* making this driver look and work like a FreeBSD component.
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* Last but not least, many thanx to UCB and the FreeBSD
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* team for creating and maintaining such a wonderful O/S.
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*
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* TODO: * Add EISA and ISA probe code.
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* * Add driver-level RSID-0. This will allow interoperability with
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* NiceTry, M$-Doze, Win-Dog, Slowlaris, etc. in recognizing RAID
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* arrays that span controllers (Wow!).
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*/
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/**
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* IMPORTANT:
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* There are two critical section "levels" used in this driver:
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* splcam() and splsoftcam(). Splcam() protects us from re-entrancy
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* from both our software and hardware interrupt handler. Splsoftcam()
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* protects us only from our software interrupt handler. The two
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* main data structures that need protection are the submitted and
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* completed queue.
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*
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* There are three places where the submitted queue is accessed:
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*
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* 1. dpt_run_queue inserts into the queue
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* 2. dpt_intr removes from the queue
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* 3 dpt_handle_timeouts potentially removes from the queue.
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*
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* There are three places where the the completed queue is accessed:
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* 1. dpt_intr() inserts into the queue
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* 2. dpt_sintr() removes from the queue
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* 3. dpt_handle_timeouts potentially inserts into the queue
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*/
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#ident "$Id: dpt_scsi.c,v 1.5 1998/03/11 00:30:08 julian Exp $"
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#define _DPT_C_
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#include "opt_dpt.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/buf.h>
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#include <sys/kernel.h>
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#include <machine/ipl.h>
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#include <scsi/scsiconf.h>
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#include <scsi/scsi_disk.h>
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#include <machine/clock.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <sys/dpt.h>
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#ifdef INLINE
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#undef INLINE
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#endif
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#define INLINE __inline
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#define INLINE_Q
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/* dpt_isa.c, dpt_eisa.c, and dpt_pci.c need this in a central place */
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int dpt_controllers_present = 0;
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/* Function Prototypes */
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static INLINE u_int32_t dpt_inl(dpt_softc_t * dpt, u_int32_t offset);
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static INLINE u_int8_t dpt_inb(dpt_softc_t * dpt, u_int32_t offset);
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static INLINE void
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dpt_outb(dpt_softc_t * dpt, u_int32_t offset,
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u_int8_t value);
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static INLINE void
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dpt_outl(dpt_softc_t * dpt, u_int32_t offset,
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u_int32_t value);
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static INLINE_Q void dpt_Qpush_free(dpt_softc_t * dpt, dpt_ccb_t * ccb);
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static INLINE_Q dpt_ccb_t *dpt_Qpop_free(dpt_softc_t * dpt);
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static INLINE_Q void dpt_Qadd_waiting(dpt_softc_t * dpt, dpt_ccb_t * ccb);
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static INLINE_Q void dpt_Qpush_waiting(dpt_softc_t * dpt, dpt_ccb_t * ccb);
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static INLINE_Q void
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dpt_Qremove_waiting(dpt_softc_t * dpt,
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dpt_ccb_t * ccb);
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static INLINE_Q void
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dpt_Qadd_submitted(dpt_softc_t * dpt,
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dpt_ccb_t * ccb);
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static INLINE_Q void
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dpt_Qremove_submitted(dpt_softc_t * dpt,
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dpt_ccb_t * ccb);
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static INLINE_Q void
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dpt_Qadd_completed(dpt_softc_t * dpt,
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dpt_ccb_t * ccb);
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static INLINE_Q void
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dpt_Qremove_completed(dpt_softc_t * dpt,
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dpt_ccb_t * ccb);
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static int
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dpt_send_eata_command(dpt_softc_t * dpt,
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eata_ccb_t * cmd_block,
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u_int8_t command,
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int32_t retries,
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u_int8_t ifc, u_int8_t code,
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u_int8_t code2);
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static INLINE int
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dpt_send_immediate(dpt_softc_t * dpt,
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eata_ccb_t * cmd_block,
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u_int8_t ifc, u_int8_t code,
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u_int8_t code2);
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static INLINE int dpt_just_reset(dpt_softc_t * dpt);
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static INLINE int dpt_raid_busy(dpt_softc_t * dpt);
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static INLINE void dpt_sched_queue(dpt_softc_t * dpt);
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#ifdef DPT_MEASURE_PERFORMANCE
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static void
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dpt_IObySize(dpt_softc_t * dpt, dpt_ccb_t * ccb,
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int op, int index);
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#endif
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static void dpt_swi_register(void *);
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#ifdef DPT_HANDLE_TIMEOUTS
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static void dpt_handle_timeouts(dpt_softc_t * dpt);
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static void dpt_timeout(void *dpt);
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#endif
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#ifdef DPT_LOST_IRQ
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static void dpt_irq_timeout(void *dpt);
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#endif
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typedef struct scsi_inquiry_data s_inq_data_t;
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static int
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dpt_scatter_gather(dpt_softc_t * dpt, dpt_ccb_t * ccb,
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u_int32_t data_length,
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caddr_t data);
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static int dpt_alloc_freelist(dpt_softc_t * dpt);
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static void dpt_run_queue(dpt_softc_t * dpt, int requests);
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static void dpt_complete(dpt_softc_t * dpt);
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static int
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dpt_process_completion(dpt_softc_t * dpt,
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dpt_ccb_t * ccb);
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static void
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dpt_set_target(int redo, dpt_softc_t * dpt,
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u_int8_t bus, u_int8_t target, u_int8_t lun, int mode,
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u_int16_t length, u_int16_t offset, dpt_ccb_t * ccb);
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static void
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dpt_target_ccb(dpt_softc_t * dpt, int bus, u_int8_t target, u_int8_t lun,
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dpt_ccb_t * ccb, int mode, u_int8_t command,
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u_int16_t length, u_int16_t offset);
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static void dpt_target_done(dpt_softc_t * dpt, int bus, dpt_ccb_t * ccb);
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static void dpt_user_cmd_done(dpt_softc_t * dpt, int bus, dpt_ccb_t * ccb);
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u_int8_t dpt_blinking_led(dpt_softc_t * dpt);
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int
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dpt_user_cmd(dpt_softc_t * dpt, eata_pt_t * user_cmd,
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caddr_t cmdarg, int minor_no);
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void dpt_detect_cache(dpt_softc_t * dpt);
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void dpt_shutdown(int howto, void *dpt);
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static void hex_dump(u_int8_t * data, int length, char *name, int no);
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char *i2bin(unsigned int no, int length);
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dpt_conf_t *
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dpt_get_conf(dpt_softc_t * dpt, u_int8_t page, u_int8_t target,
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u_int8_t size, int extent);
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static dpt_inq_t *dpt_get_board_data(dpt_softc_t * dpt, u_int32_t target_id);
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int dpt_setup(dpt_softc_t * dpt, dpt_conf_t * conf);
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int dpt_attach(dpt_softc_t * dpt);
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static int32_t dpt_scsi_cmd(struct scsi_xfer * xs);
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static void dptminphys(struct buf * bp);
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static void dpt_sintr(void);
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void dpt_intr(void *arg);
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static char *scsi_cmd_name(u_int8_t cmd);
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dpt_rb_t
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dpt_register_buffer(int unit,
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u_int8_t channel,
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u_int8_t target,
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u_int8_t lun,
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u_int8_t mode,
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u_int16_t length,
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u_int16_t offset,
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dpt_rec_buff callback,
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dpt_rb_op_t op);
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int
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dpt_send_buffer(int unit,
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u_int8_t channel,
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u_int8_t target,
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u_int8_t lun,
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u_int8_t mode,
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u_int16_t length,
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u_int16_t offset,
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void *data,
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buff_wr_done callback);
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extern void (*ihandlers[32]) __P((void));
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u_long dpt_unit; /* This one is kernel-related, do not touch! */
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/* The linked list of softc structures */
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TAILQ_HEAD(, dpt_softc) dpt_softc_list = TAILQ_HEAD_INITIALIZER(dpt_softc_list);
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/*
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* These will have to be setup by parameters passed at boot/load time. For
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* perfromance reasons, we make them constants for the time being.
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*/
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#define dpt_min_segs DPT_MAX_SEGS
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#define dpt_max_segs DPT_MAX_SEGS
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static struct scsi_adapter dpt_switch =
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{
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dpt_scsi_cmd,
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dptminphys,
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NULL,
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NULL,
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NULL,
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"dpt",
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{0, 0}
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};
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static struct scsi_device dpt_dev =
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{
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NULL, /* Use default error handler */
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NULL, /* have a queue, served by this */
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NULL, /* have no async handler */
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NULL, /* Use default 'done' routine */
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"dpt",
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0,
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{0, 0}
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};
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/* Software Interrupt Vector */
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static void
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dpt_swi_register(void *unused)
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{
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ihandlers[SWI_CAMBIO] = dpt_sintr;
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}
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SYSINIT(dpt_camswi, SI_SUB_DRIVERS, SI_ORDER_FIRST, dpt_swi_register, NULL)
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/* These functions allows us to do memory mapped I/O, if hardware supported. */
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static INLINE u_int8_t
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dpt_inb(dpt_softc_t * dpt, u_int32_t offset)
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{
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u_int8_t result;
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if (dpt->v_membase != NULL) {
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result = dpt->v_membase[offset];
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} else {
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result = inb(dpt->io_base + offset);
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}
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return (result);
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}
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static INLINE u_int32_t
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dpt_inl(dpt_softc_t * dpt, u_int32_t offset)
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{
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u_int32_t result;
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if (dpt->v_membase != NULL) {
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result = *(volatile u_int32_t *) (&dpt->v_membase[offset]);
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} else {
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result = inl(dpt->io_base + offset);
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}
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return (result);
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}
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static INLINE void
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dpt_outb(dpt_softc_t * dpt, u_int32_t offset, u_int8_t value)
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{
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if (dpt->v_membase != NULL) {
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dpt->v_membase[offset] = value;
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} else {
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outb(dpt->io_base + offset, value);
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}
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}
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static INLINE void
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dpt_outl(dpt_softc_t * dpt, u_int32_t offset, u_int32_t value)
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{
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if (dpt->v_membase != NULL) {
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*(volatile u_int32_t *) (&dpt->v_membase[offset]) = value;
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} else {
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outl(dpt->io_base + offset, value);
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}
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}
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static INLINE void
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dpt_sched_queue(dpt_softc_t * dpt)
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{
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if (dpt->state & DPT_HA_QUIET) {
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printf("dpt%d: Under Quiet Busses Condition. "
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"No Commands are submitted\n", dpt->unit);
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return;
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}
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setsoftcambio();
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}
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static INLINE int
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dpt_wait(dpt_softc_t * dpt, u_int8_t bits, u_int8_t state)
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{
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int i;
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u_int8_t c;
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for (i = 0; i < 20000; i++) { /* wait 20ms for not busy */
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c = dpt_inb(dpt, HA_RSTATUS) & bits;
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if (c == state)
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return (0);
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else
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DELAY(50);
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}
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return (-1);
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}
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static INLINE int
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dpt_just_reset(dpt_softc_t * dpt)
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{
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if ((dpt_inb(dpt, 2) == 'D')
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&& (dpt_inb(dpt, 3) == 'P')
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&& (dpt_inb(dpt, 4) == 'T')
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&& (dpt_inb(dpt, 5) == 'H'))
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return (1);
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else
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return (0);
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}
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static INLINE int
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dpt_raid_busy(dpt_softc_t * dpt)
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{
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if ((dpt_inb(dpt, 0) == 'D')
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&& (dpt_inb(dpt, 1) == 'P')
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&& (dpt_inb(dpt, 2) == 'T'))
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return (1);
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else
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return (0);
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}
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/**
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* Build a Command Block for target mode READ/WRITE BUFFER,
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* with the ``sync'' bit ON.
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*
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* Although the length and offset are 24 bit fields in the command, they cannot
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* exceed 8192 bytes, so we take them as short integers andcheck their range.
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* If they are sensless, we round them to zero offset, maximum length and complain.
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*/
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static void
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dpt_target_ccb(dpt_softc_t * dpt, int bus, u_int8_t target, u_int8_t lun,
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dpt_ccb_t * ccb, int mode, u_int8_t command,
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u_int16_t length, u_int16_t offset)
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{
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eata_ccb_t *cp;
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int ospl;
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if ((length + offset) > DPT_MAX_TARGET_MODE_BUFFER_SIZE) {
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printf("dpt%d: Length of %d, and offset of %d are wrong\n",
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dpt->unit, length, offset);
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length = DPT_MAX_TARGET_MODE_BUFFER_SIZE;
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offset = 0;
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}
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ccb->xs = NULL;
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ccb->flags = 0;
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ccb->state = DPT_CCB_STATE_NEW;
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ccb->std_callback = (ccb_callback) dpt_target_done;
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ccb->wrbuff_callback = NULL;
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cp = &ccb->eata_ccb;
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cp->CP_OpCode = EATA_CMD_DMA_SEND_CP;
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cp->SCSI_Reset = 0;
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cp->HBA_Init = 0;
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cp->Auto_Req_Sen = 1;
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cp->cp_id = target;
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cp->DataIn = 1;
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cp->DataOut = 0;
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cp->Interpret = 0;
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cp->reqlen = htonl(sizeof(struct scsi_sense_data));
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cp->cp_statDMA = htonl(vtophys(&cp->cp_statDMA));
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cp->cp_reqDMA = htonl(vtophys(&cp->cp_reqDMA));
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cp->cp_viraddr = (u_int32_t) & ccb;
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cp->cp_msg[0] = HA_IDENTIFY_MSG | HA_DISCO_RECO;
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cp->cp_scsi_cmd = command;
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cp->cp_cdb[1] = (u_int8_t) (mode & SCSI_TM_MODE_MASK);
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cp->cp_lun = lun; /* Order is important here! */
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cp->cp_cdb[2] = 0x00; /* Buffer Id, only 1 :-( */
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cp->cp_cdb[3] = (length >> 16) & 0xFF; /* Buffer offset MSB */
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cp->cp_cdb[4] = (length >> 8) & 0xFF;
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cp->cp_cdb[5] = length & 0xFF;
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cp->cp_cdb[6] = (length >> 16) & 0xFF; /* Length MSB */
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cp->cp_cdb[7] = (length >> 8) & 0xFF;
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cp->cp_cdb[8] = length & 0xFF; /* Length LSB */
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cp->cp_cdb[9] = 0; /* No sync, no match bits */
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/**
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* This could be optimized to live in dpt_register_buffer.
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* We keep it here, just in case the kernel decides to reallocate pages
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*/
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if (dpt_scatter_gather(dpt, ccb, DPT_RW_BUFFER_SIZE,
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dpt->rw_buffer[bus][target][lun])) {
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printf("dpt%d: Failed to setup Scatter/Gather for Target-Mode buffer\n",
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dpt->unit);
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}
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}
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/* Setup a target mode READ command */
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#define cmd_ct dpt->performance.command_count[(int)ccb->eata_ccb.cp_scsi_cmd];
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static void
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dpt_set_target(int redo, dpt_softc_t * dpt,
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u_int8_t bus, u_int8_t target, u_int8_t lun, int mode,
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u_int16_t length, u_int16_t offset, dpt_ccb_t * ccb)
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{
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int ospl;
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#ifdef DPT_MEASURE_PERFORMANCE
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struct timeval now;
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#endif
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|
|
if (dpt->target_mode_enabled) {
|
|
ospl = splcam();
|
|
|
|
if (!redo)
|
|
dpt_target_ccb(dpt, bus, target, lun, ccb, mode,
|
|
SCSI_TM_READ_BUFFER, length, offset);
|
|
|
|
ccb->transaction_id = ++dpt->commands_processed;
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
++cmd_ct;
|
|
microtime(&now);
|
|
ccb->command_started = now;
|
|
#endif
|
|
dpt_Qadd_waiting(dpt, ccb);
|
|
dpt_sched_queue(dpt);
|
|
|
|
splx(ospl);
|
|
} else {
|
|
printf("dpt%d: Target Mode Request, but Target Mode is OFF\n",
|
|
dpt->unit);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Schedule a buffer to be sent to another target.
|
|
* The work will be scheduled and the callback provided will be called when the work is
|
|
* actually done.
|
|
*
|
|
* Please NOTE: ``Anyone'' can send a buffer, but only registered clients get notified
|
|
of receipt of buffers.
|
|
*/
|
|
|
|
int
|
|
dpt_send_buffer(int unit,
|
|
u_int8_t channel,
|
|
u_int8_t target,
|
|
u_int8_t lun,
|
|
u_int8_t mode,
|
|
u_int16_t length,
|
|
u_int16_t offset,
|
|
void *data,
|
|
buff_wr_done callback)
|
|
{
|
|
dpt_softc_t *dpt;
|
|
dpt_ccb_t *ccb = NULL;
|
|
int ospl;
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
struct timeval now;
|
|
#endif
|
|
|
|
/* This is an external call. Be a bit paranoid */
|
|
for (dpt = TAILQ_FIRST(&dpt_softc_list);
|
|
dpt != NULL;
|
|
dpt = TAILQ_NEXT(dpt, links)) {
|
|
if (dpt->unit == unit)
|
|
goto valid_unit;
|
|
}
|
|
|
|
return (INVALID_UNIT);
|
|
|
|
valid_unit:
|
|
|
|
if (dpt->target_mode_enabled) {
|
|
if ((channel >= dpt->channels) || (target > dpt->max_id) ||
|
|
(lun > dpt->max_lun)) {
|
|
return (INVALID_SENDER);
|
|
}
|
|
if ((dpt->rw_buffer[channel][target][lun] == NULL) ||
|
|
(dpt->buffer_receiver[channel][target][lun] == NULL))
|
|
return (NOT_REGISTERED);
|
|
|
|
ospl = splsoftcam();
|
|
/* Process the free list */
|
|
if ((TAILQ_EMPTY(&dpt->free_ccbs)) && dpt_alloc_freelist(dpt)) {
|
|
printf("dpt%d ERROR: Cannot allocate any more free CCB's.\n"
|
|
" Please try later\n",
|
|
dpt->unit);
|
|
splx(ospl);
|
|
return (NO_RESOURCES);
|
|
}
|
|
/* Now grab the newest CCB */
|
|
if ((ccb = dpt_Qpop_free(dpt)) == NULL) {
|
|
splx(ospl);
|
|
panic("dpt%d: Got a NULL CCB from pop_free()\n", dpt->unit);
|
|
}
|
|
splx(ospl);
|
|
|
|
bcopy(dpt->rw_buffer[channel][target][lun] + offset, data, length);
|
|
dpt_target_ccb(dpt, channel, target, lun, ccb, mode, SCSI_TM_WRITE_BUFFER,
|
|
length, offset);
|
|
ccb->std_callback = (ccb_callback) callback; /* A hack. Potential
|
|
* trouble */
|
|
|
|
ospl = splcam();
|
|
ccb->transaction_id = ++dpt->commands_processed;
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
++cmd_ct;
|
|
microtime(&now);
|
|
ccb->command_started = now;
|
|
#endif
|
|
dpt_Qadd_waiting(dpt, ccb);
|
|
dpt_sched_queue(dpt);
|
|
|
|
splx(ospl);
|
|
return (0);
|
|
}
|
|
return (DRIVER_DOWN);
|
|
}
|
|
|
|
static void
|
|
dpt_target_done(dpt_softc_t * dpt, int bus, dpt_ccb_t * ccb)
|
|
{
|
|
int ospl = splsoftcam();
|
|
eata_ccb_t *cp;
|
|
|
|
cp = &ccb->eata_ccb;
|
|
|
|
/**
|
|
* Remove the CCB from the waiting queue.
|
|
* We do NOT put it back on the free, etc., queues as it is a special
|
|
* ccb, owned by the dpt_softc of this unit.
|
|
*/
|
|
ospl = splsoftcam();
|
|
dpt_Qremove_completed(dpt, ccb);
|
|
splx(ospl);
|
|
|
|
#define br_channel (ccb->eata_ccb.cp_channel)
|
|
#define br_target (ccb->eata_ccb.cp_id)
|
|
#define br_lun (ccb->eata_ccb.cp_LUN)
|
|
#define br_index [br_channel][br_target][br_lun]
|
|
#define read_buffer_callback (dpt->buffer_receiver br_index )
|
|
#define read_buffer (dpt->rw_buffer[br_channel][br_target][br_lun])
|
|
#define cb(offset) (ccb->eata_ccb.cp_cdb[offset])
|
|
#define br_offset ((cb(3) << 16) | (cb(4) << 8) | cb(5))
|
|
#define br_length ((cb(6) << 16) | (cb(7) << 8) | cb(8))
|
|
|
|
/* Different reasons for being here, you know... */
|
|
switch (ccb->eata_ccb.cp_scsi_cmd) {
|
|
case SCSI_TM_READ_BUFFER:
|
|
if (read_buffer_callback != NULL) {
|
|
/* This is a buffer generated by a kernel process */
|
|
read_buffer_callback(dpt->unit, br_channel,
|
|
br_target, br_lun,
|
|
read_buffer,
|
|
br_offset, br_length);
|
|
} else {
|
|
/*
|
|
* This is a buffer waited for by a user (sleeping)
|
|
* command
|
|
*/
|
|
wakeup(ccb);
|
|
}
|
|
|
|
/* We ALWAYS re-issue the same command; args are don't-care */
|
|
dpt_set_target(1, 0, 0, 0, 0, 0, 0, 0, 0);
|
|
break;
|
|
|
|
case SCSI_TM_WRITE_BUFFER:
|
|
(ccb->wrbuff_callback) (dpt->unit, br_channel, br_target,
|
|
br_offset, br_length,
|
|
br_lun, ccb->status_packet.hba_stat);
|
|
break;
|
|
default:
|
|
printf("dpt%d: %s is an unsupported command for target mode\n",
|
|
dpt->unit, scsi_cmd_name(ccb->eata_ccb.cp_scsi_cmd));
|
|
}
|
|
ospl = splsoftcam();
|
|
dpt->target_ccb[br_channel][br_target][br_lun] = NULL;
|
|
dpt_Qpush_free(dpt, ccb);
|
|
splx(ospl);
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Use this function to register a client for a buffer read target operation.
|
|
* The function you register will be called every time a buffer is received
|
|
* by the target mode code.
|
|
*/
|
|
|
|
dpt_rb_t
|
|
dpt_register_buffer(int unit,
|
|
u_int8_t channel,
|
|
u_int8_t target,
|
|
u_int8_t lun,
|
|
u_int8_t mode,
|
|
u_int16_t length,
|
|
u_int16_t offset,
|
|
dpt_rec_buff callback,
|
|
dpt_rb_op_t op)
|
|
{
|
|
dpt_softc_t *dpt;
|
|
dpt_ccb_t *ccb = NULL;
|
|
int ospl;
|
|
|
|
for (dpt = TAILQ_FIRST(&dpt_softc_list);
|
|
dpt != NULL;
|
|
dpt = TAILQ_NEXT(dpt, links)) {
|
|
if (dpt->unit == unit)
|
|
goto valid_unit;
|
|
}
|
|
|
|
return (INVALID_UNIT);
|
|
|
|
valid_unit:
|
|
|
|
if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE)
|
|
return (DRIVER_DOWN);
|
|
|
|
if ((channel > (dpt->channels - 1)) || (target > (dpt->max_id - 1)) ||
|
|
(lun > (dpt->max_lun - 1)))
|
|
return (INVALID_SENDER);
|
|
|
|
if (dpt->buffer_receiver[channel][target][lun] == NULL) {
|
|
if (op == REGISTER_BUFFER) {
|
|
/* Assign the requested callback */
|
|
dpt->buffer_receiver[channel][target][lun] = callback;
|
|
/* Get a CCB */
|
|
ospl = splsoftcam();
|
|
|
|
/* Process the free list */
|
|
if ((TAILQ_EMPTY(&dpt->free_ccbs)) && dpt_alloc_freelist(dpt)) {
|
|
printf("dpt%d ERROR: Cannot allocate any more free CCB's.\n"
|
|
" Please try later\n",
|
|
dpt->unit);
|
|
splx(ospl);
|
|
return (NO_RESOURCES);
|
|
}
|
|
/* Now grab the newest CCB */
|
|
if ((ccb = dpt_Qpop_free(dpt)) == NULL) {
|
|
splx(ospl);
|
|
panic("dpt%d: Got a NULL CCB from pop_free()\n", dpt->unit);
|
|
}
|
|
splx(ospl);
|
|
|
|
/* Clean up the leftover of the previous tenant */
|
|
ccb->status = DPT_CCB_STATE_NEW;
|
|
dpt->target_ccb[channel][target][lun] = ccb;
|
|
|
|
dpt->rw_buffer[channel][target][lun] = malloc(DPT_RW_BUFFER_SIZE,
|
|
M_DEVBUF, M_NOWAIT);
|
|
if (dpt->rw_buffer[channel][target][lun] == NULL) {
|
|
printf("dpt%d: Failed to allocate Target-Mode buffer\n",
|
|
dpt->unit);
|
|
ospl = splsoftcam();
|
|
dpt_Qpush_free(dpt, ccb);
|
|
splx(ospl);
|
|
return (NO_RESOURCES);
|
|
}
|
|
dpt_set_target(0, dpt, channel, target, lun, mode, length,
|
|
offset, ccb);
|
|
return (SUCCESSFULLY_REGISTERED);
|
|
} else
|
|
return (NOT_REGISTERED);
|
|
} else {
|
|
if (op == REGISTER_BUFFER) {
|
|
if (dpt->buffer_receiver[channel][target][lun] == callback)
|
|
return (ALREADY_REGISTERED);
|
|
else
|
|
return (REGISTERED_TO_ANOTHER);
|
|
} else {
|
|
if (dpt->buffer_receiver[channel][target][lun] == callback) {
|
|
dpt->buffer_receiver[channel][target][lun] = NULL;
|
|
ospl = splsoftcam();
|
|
dpt_Qpush_free(dpt, ccb);
|
|
splx(ospl);
|
|
free(dpt->rw_buffer[channel][target][lun], M_DEVBUF);
|
|
return (SUCCESSFULLY_REGISTERED);
|
|
} else
|
|
return (INVALID_CALLBACK);
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This routine will try to send an EATA command to the DPT HBA.
|
|
* It will, by default, try AHZ times, waiting 10ms between tries.
|
|
* It returns 0 on success and 1 on failure.
|
|
* It assumes the caller protects it with splbio() or some such.
|
|
*
|
|
* IMPORTANT: We do NOT protect the ports from multiple access in here.
|
|
* You are expected to do it in the calling routine.
|
|
* Here, we cannot have any clue as to the scope of your work.
|
|
*/
|
|
|
|
static int
|
|
dpt_send_eata_command(dpt_softc_t * dpt, eata_ccb_t * cmd_block,
|
|
u_int8_t command, int32_t retries,
|
|
u_int8_t ifc, u_int8_t code, u_int8_t code2)
|
|
{
|
|
int32_t loop;
|
|
u_int8_t result;
|
|
u_int32_t test;
|
|
u_int32_t swapped_cmdaddr;
|
|
|
|
if (!retries)
|
|
retries = 1000;
|
|
|
|
/*
|
|
* I hate this polling nonsense. Wish there was a way to tell the DPT
|
|
* to go get commands at its own pace, or to interrupt when ready.
|
|
* In the mean time we will measure how many itterations it really
|
|
* takes.
|
|
*/
|
|
for (loop = 0; loop < retries; loop++) {
|
|
if ((dpt_inb(dpt, HA_RAUXSTAT) & HA_ABUSY) == 0)
|
|
break;
|
|
else
|
|
DELAY(50);
|
|
}
|
|
|
|
if (loop < retries) {
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
if (loop > dpt->performance.max_eata_tries)
|
|
dpt->performance.max_eata_tries = loop;
|
|
|
|
if (loop < dpt->performance.min_eata_tries)
|
|
dpt->performance.min_eata_tries = loop;
|
|
#endif
|
|
} else {
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
++dpt->performance.command_too_busy;
|
|
#endif
|
|
return (1);
|
|
}
|
|
|
|
if (cmd_block != NULL) {
|
|
swapped_cmdaddr = vtophys(cmd_block);
|
|
|
|
#if (BYTE_ORDER == BIG_ENDIAN)
|
|
swapped_cmdaddr = ((swapped_cmdaddr >> 24) & 0xFF)
|
|
| ((swapped_cmdaddr >> 16) & 0xFF)
|
|
| ((swapped_cmdaddr >> 8) & 0xFF)
|
|
| (swapped_cmdaddr & 0xFF);
|
|
#endif
|
|
} else {
|
|
swapped_cmdaddr = 0;
|
|
}
|
|
/* And now the address */
|
|
dpt_outl(dpt, HA_WDMAADDR, swapped_cmdaddr);
|
|
|
|
if (command == EATA_CMD_IMMEDIATE) {
|
|
if (cmd_block == NULL) {
|
|
dpt_outb(dpt, HA_WCODE2, code2);
|
|
dpt_outb(dpt, HA_WCODE, code);
|
|
}
|
|
dpt_outb(dpt, HA_WIFC, ifc);
|
|
}
|
|
dpt_outb(dpt, HA_WCOMMAND, command);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* Send a command for immediate execution by the DPT
|
|
* See above function for IMPORTANT notes.
|
|
*/
|
|
|
|
static INLINE int
|
|
dpt_send_immediate(dpt_softc_t * dpt, eata_ccb_t * cmd_block,
|
|
u_int8_t ifc, u_int8_t code, u_int8_t code2)
|
|
{
|
|
return (dpt_send_eata_command(dpt, cmd_block, EATA_CMD_IMMEDIATE,
|
|
/* retries */ 1000000, ifc, code, code2));
|
|
}
|
|
|
|
/* Return the state of the blinking DPT LED's */
|
|
u_int8_t
|
|
dpt_blinking_led(dpt_softc_t * dpt)
|
|
{
|
|
int ndx;
|
|
int ospl;
|
|
u_int32_t state;
|
|
u_int32_t previous;
|
|
u_int8_t result;
|
|
|
|
ospl = splcam();
|
|
|
|
result = 0;
|
|
|
|
for (ndx = 0, state = 0, previous = 0;
|
|
(ndx < 10) && (state != previous);
|
|
ndx++) {
|
|
previous = state;
|
|
state = dpt_inl(dpt, 1);
|
|
}
|
|
|
|
if ((state == previous) && (state == DPT_BLINK_INDICATOR))
|
|
result = dpt_inb(dpt, 5);
|
|
|
|
splx(ospl);
|
|
return (result);
|
|
}
|
|
|
|
/**
|
|
* Execute a command which did not come from the kernel's SCSI layer.
|
|
* The only way to map user commands to bus and target is to comply with the
|
|
* standard DPT wire-down scheme:
|
|
*/
|
|
|
|
int
|
|
dpt_user_cmd(dpt_softc_t * dpt, eata_pt_t * user_cmd,
|
|
caddr_t cmdarg, int minor_no)
|
|
{
|
|
int channel, target, lun;
|
|
int huh;
|
|
int result;
|
|
int ospl;
|
|
int submitted;
|
|
dpt_ccb_t *ccb;
|
|
void *data;
|
|
struct timeval now;
|
|
|
|
data = NULL;
|
|
channel = minor2hba(minor_no);
|
|
target = minor2target(minor_no);
|
|
lun = minor2lun(minor_no);
|
|
|
|
if ((channel > (dpt->channels - 1))
|
|
|| (target > dpt->max_id)
|
|
|| (lun > dpt->max_lun))
|
|
return (ENXIO);
|
|
|
|
if (target == dpt->sc_scsi_link[channel].adapter_targ) {
|
|
/* This one is for the controller itself */
|
|
if ((user_cmd->eataID[0] != 'E')
|
|
|| (user_cmd->eataID[1] != 'A')
|
|
|| (user_cmd->eataID[2] != 'T')
|
|
|| (user_cmd->eataID[3] != 'A')) {
|
|
return (ENXIO);
|
|
}
|
|
}
|
|
/* Get a DPT CCB, so we can prepare a command */
|
|
ospl = splsoftcam();
|
|
|
|
/* Process the free list */
|
|
if ((TAILQ_EMPTY(&dpt->free_ccbs)) && dpt_alloc_freelist(dpt)) {
|
|
printf("dpt%d ERROR: Cannot allocate any more free CCB's.\n"
|
|
" Please try later\n",
|
|
dpt->unit);
|
|
splx(ospl);
|
|
return (EFAULT);
|
|
}
|
|
/* Now grab the newest CCB */
|
|
if ((ccb = dpt_Qpop_free(dpt)) == NULL) {
|
|
splx(ospl);
|
|
panic("dpt%d: Got a NULL CCB from pop_free()\n", dpt->unit);
|
|
} else {
|
|
splx(ospl);
|
|
/* Clean up the leftover of the previous tenant */
|
|
ccb->status = DPT_CCB_STATE_NEW;
|
|
}
|
|
|
|
bcopy((caddr_t) & user_cmd->command_packet, (caddr_t) & ccb->eata_ccb,
|
|
sizeof(eata_ccb_t));
|
|
|
|
/* We do not want to do user specified scatter/gather. Why?? */
|
|
if (ccb->eata_ccb.scatter == 1)
|
|
return (EINVAL);
|
|
|
|
ccb->eata_ccb.Auto_Req_Sen = 1;
|
|
ccb->eata_ccb.reqlen = htonl(sizeof(struct scsi_sense_data));
|
|
ccb->eata_ccb.cp_datalen = htonl(sizeof(ccb->eata_ccb.cp_datalen));
|
|
ccb->eata_ccb.cp_dataDMA = htonl(vtophys(ccb->eata_ccb.cp_dataDMA));
|
|
ccb->eata_ccb.cp_statDMA = htonl(vtophys(&ccb->eata_ccb.cp_statDMA));
|
|
ccb->eata_ccb.cp_reqDMA = htonl(vtophys(&ccb->eata_ccb.cp_reqDMA));
|
|
ccb->eata_ccb.cp_viraddr = (u_int32_t) & ccb;
|
|
|
|
if (ccb->eata_ccb.DataIn || ccb->eata_ccb.DataOut) {
|
|
/* Data I/O is involved in this command. Alocate buffer */
|
|
if (ccb->eata_ccb.cp_datalen > PAGE_SIZE) {
|
|
data = contigmalloc(ccb->eata_ccb.cp_datalen,
|
|
M_TEMP, M_WAITOK, 0, ~0,
|
|
ccb->eata_ccb.cp_datalen,
|
|
0x10000);
|
|
} else {
|
|
data = malloc(ccb->eata_ccb.cp_datalen, M_TEMP,
|
|
M_WAITOK);
|
|
}
|
|
|
|
if (data == NULL) {
|
|
printf("dpt%d: Cannot allocate %d bytes "
|
|
"for EATA command\n", dpt->unit,
|
|
ccb->eata_ccb.cp_datalen);
|
|
return (EFAULT);
|
|
}
|
|
#define usr_cmd_DMA (caddr_t)user_cmd->command_packet.cp_dataDMA
|
|
if (ccb->eata_ccb.DataIn == 1) {
|
|
if (copyin(usr_cmd_DMA,
|
|
data, ccb->eata_ccb.cp_datalen) == -1)
|
|
return (EFAULT);
|
|
}
|
|
} else {
|
|
/* No data I/O involved here. Make sure the DPT knows that */
|
|
ccb->eata_ccb.cp_datalen = 0;
|
|
data = NULL;
|
|
}
|
|
|
|
if (ccb->eata_ccb.FWNEST == 1)
|
|
ccb->eata_ccb.FWNEST = 0;
|
|
|
|
if (ccb->eata_ccb.cp_datalen != 0) {
|
|
if (dpt_scatter_gather(dpt, ccb, ccb->eata_ccb.cp_datalen,
|
|
data) != 0) {
|
|
if (data != NULL)
|
|
free(data, M_TEMP);
|
|
return (EFAULT);
|
|
}
|
|
}
|
|
/**
|
|
* We are required to quiet a SCSI bus.
|
|
* since we do not queue comands on a bus basis,
|
|
* we wait for ALL commands on a controller to complete.
|
|
* In the mean time, sched_queue() will not schedule new commands.
|
|
*/
|
|
if ((ccb->eata_ccb.cp_cdb[0] == MULTIFUNCTION_CMD)
|
|
&& (ccb->eata_ccb.cp_cdb[2] == BUS_QUIET)) {
|
|
/* We wait for ALL traffic for this HBa to subside */
|
|
ospl = splsoftcam();
|
|
dpt->state |= DPT_HA_QUIET;
|
|
splx(ospl);
|
|
|
|
while ((submitted = dpt->submitted_ccbs_count) != 0) {
|
|
huh = tsleep((void *) dpt, PCATCH | PRIBIO, "dptqt",
|
|
100 * hz);
|
|
switch (huh) {
|
|
case 0:
|
|
/* Wakeup call received */
|
|
break;
|
|
case EWOULDBLOCK:
|
|
/* Timer Expired */
|
|
break;
|
|
default:
|
|
/* anything else */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
/* Resume normal operation */
|
|
if ((ccb->eata_ccb.cp_cdb[0] == MULTIFUNCTION_CMD)
|
|
&& (ccb->eata_ccb.cp_cdb[2] == BUS_UNQUIET)) {
|
|
ospl = splsoftcam();
|
|
dpt->state &= ~DPT_HA_QUIET;
|
|
splx(ospl);
|
|
}
|
|
/**
|
|
* Schedule the command and submit it.
|
|
* We bypass dpt_sched_queue, as it will block on DPT_HA_QUIET
|
|
*/
|
|
ccb->xs = NULL;
|
|
ccb->flags = 0;
|
|
ccb->eata_ccb.Auto_Req_Sen = 1; /* We always want this feature */
|
|
|
|
ccb->transaction_id = ++dpt->commands_processed;
|
|
ccb->std_callback = (ccb_callback) dpt_user_cmd_done;
|
|
ccb->result = (u_int32_t) & cmdarg;
|
|
ccb->data = data;
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
++dpt->performance.command_count[(int) ccb->eata_ccb.cp_scsi_cmd];
|
|
microtime(&now);
|
|
ccb->command_started = now;
|
|
#endif
|
|
ospl = splcam();
|
|
dpt_Qadd_waiting(dpt, ccb);
|
|
splx(ospl);
|
|
|
|
dpt_sched_queue(dpt);
|
|
|
|
/* Wait for the command to complete */
|
|
(void) tsleep((void *) ccb, PCATCH | PRIBIO, "dptucw", 100 * hz);
|
|
|
|
/* Free allocated memory */
|
|
if (data != NULL)
|
|
free(data, M_TEMP);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
dpt_user_cmd_done(dpt_softc_t * dpt, int bus, dpt_ccb_t * ccb)
|
|
{
|
|
int ospl = splsoftcam();
|
|
u_int32_t result;
|
|
caddr_t cmd_arg;
|
|
|
|
/**
|
|
* If Auto Request Sense is on, copyout the sense struct
|
|
*/
|
|
#define usr_pckt_DMA (caddr_t)ntohl(ccb->eata_ccb.cp_reqDMA)
|
|
#define usr_pckt_len ntohl(ccb->eata_ccb.cp_datalen)
|
|
if (ccb->eata_ccb.Auto_Req_Sen == 1) {
|
|
if (copyout((caddr_t) & ccb->sense_data, usr_pckt_DMA,
|
|
sizeof(struct scsi_sense_data))) {
|
|
ccb->result = EFAULT;
|
|
dpt_Qpush_free(dpt, ccb);
|
|
splx(ospl);
|
|
wakeup(ccb);
|
|
return;
|
|
}
|
|
}
|
|
/* If DataIn is on, copyout the data */
|
|
if ((ccb->eata_ccb.DataIn == 1)
|
|
&& (ccb->status_packet.hba_stat == HA_NO_ERROR)) {
|
|
if (copyout(ccb->data, usr_pckt_DMA, usr_pckt_len)) {
|
|
dpt_Qpush_free(dpt, ccb);
|
|
ccb->result = EFAULT;
|
|
|
|
splx(ospl);
|
|
wakeup(ccb);
|
|
return;
|
|
}
|
|
}
|
|
/* Copyout the status */
|
|
result = ccb->status_packet.hba_stat;
|
|
cmd_arg = (caddr_t) ccb->result;
|
|
|
|
if (copyout((caddr_t) & result, cmd_arg, sizeof(result))) {
|
|
dpt_Qpush_free(dpt, ccb);
|
|
ccb->result = EFAULT;
|
|
splx(ospl);
|
|
wakeup(ccb);
|
|
return;
|
|
}
|
|
/* Put the CCB back in the freelist */
|
|
ccb->state |= DPT_CCB_STATE_COMPLETED;
|
|
dpt_Qpush_free(dpt, ccb);
|
|
|
|
/* Free allocated memory */
|
|
splx(ospl);
|
|
return;
|
|
}
|
|
|
|
/* Detect Cache parameters and size */
|
|
|
|
void
|
|
dpt_detect_cache(dpt_softc_t * dpt)
|
|
{
|
|
int size;
|
|
int bytes;
|
|
int result;
|
|
int ospl;
|
|
int ndx;
|
|
u_int8_t status;
|
|
char name[64];
|
|
char *param;
|
|
char *buff;
|
|
eata_ccb_t cp;
|
|
|
|
dpt_sp_t sp;
|
|
struct scsi_sense_data snp;
|
|
|
|
/**
|
|
* We lock out the hardware early, so that we can either complete the
|
|
* operation or bust out right away.
|
|
*/
|
|
|
|
sprintf(name, "FreeBSD DPT Driver, version %d.%d.%d",
|
|
DPT_RELEASE, DPT_VERSION, DPT_PATCH);
|
|
|
|
/**
|
|
* Default setting, for best perfromance..
|
|
* This is what virtually all cards default to..
|
|
*/
|
|
dpt->cache_type = DPT_CACHE_WRITEBACK;
|
|
dpt->cache_size = 0;
|
|
|
|
if ((buff = malloc(512, M_DEVBUF, M_NOWAIT)) == NULL) {
|
|
printf("dpt%d: Failed to allocate %d bytes for a work "
|
|
"buffer\n",
|
|
dpt->unit, 512);
|
|
return;
|
|
}
|
|
bzero(&cp, sizeof(eata_ccb_t));
|
|
bzero((int8_t *) & sp, sizeof(dpt_sp_t));
|
|
bzero((int8_t *) & snp, sizeof(struct scsi_sense_data));
|
|
bzero(buff, 512);
|
|
|
|
/* Setup the command structure */
|
|
cp.Interpret = 1;
|
|
cp.DataIn = 1;
|
|
cp.Auto_Req_Sen = 1;
|
|
cp.reqlen = (u_int8_t) sizeof(struct scsi_sense_data);
|
|
|
|
cp.cp_id = 0; /* who cares? The HBA will interpret.. */
|
|
cp.cp_LUN = 0; /* In the EATA packet */
|
|
cp.cp_lun = 0; /* In the SCSI command */
|
|
cp.cp_channel = 0;
|
|
|
|
cp.cp_scsi_cmd = EATA_CMD_DMA_SEND_CP;
|
|
cp.cp_len = 56;
|
|
cp.cp_dataDMA = htonl(vtophys(buff));
|
|
cp.cp_statDMA = htonl(vtophys(&sp));
|
|
cp.cp_reqDMA = htonl(vtophys(&snp));
|
|
|
|
cp.cp_identify = 1;
|
|
cp.cp_dispri = 1;
|
|
|
|
/**
|
|
* Build the EATA Command Packet structure
|
|
* for a Log Sense Command.
|
|
*/
|
|
|
|
cp.cp_cdb[0] = 0x4d;
|
|
cp.cp_cdb[1] = 0x0;
|
|
cp.cp_cdb[2] = 0x40 | 0x33;
|
|
cp.cp_cdb[7] = 1;
|
|
|
|
cp.cp_datalen = htonl(512);
|
|
|
|
ospl = splcam();
|
|
result = dpt_send_eata_command(dpt, &cp, EATA_CMD_DMA_SEND_CP,
|
|
10000, 0, 0, 0);
|
|
if (result != 0) {
|
|
printf("dpt%d WARNING: detect_cache() failed (%d) to send "
|
|
"EATA_CMD_DMA_SEND_CP\n", dpt->unit, result);
|
|
free(buff, M_TEMP);
|
|
splx(ospl);
|
|
return;
|
|
}
|
|
/* Wait for two seconds for a response. This can be slow... */
|
|
for (ndx = 0;
|
|
(ndx < 20000) &&
|
|
!((status = dpt_inb(dpt, HA_RAUXSTAT)) & HA_AIRQ);
|
|
ndx++) {
|
|
DELAY(50);
|
|
}
|
|
|
|
/* Grab the status and clear interrupts */
|
|
status = dpt_inb(dpt, HA_RSTATUS);
|
|
splx(ospl);
|
|
|
|
/**
|
|
* Sanity check
|
|
*/
|
|
if (buff[0] != 0x33) {
|
|
return;
|
|
}
|
|
bytes = DPT_HCP_LENGTH(buff);
|
|
param = DPT_HCP_FIRST(buff);
|
|
|
|
if (DPT_HCP_CODE(param) != 1) {
|
|
/**
|
|
* DPT Log Page layout error
|
|
*/
|
|
printf("dpt%d: NOTICE: Log Page (1) layout error\n",
|
|
dpt->unit);
|
|
return;
|
|
}
|
|
if (!(param[4] & 0x4)) {
|
|
dpt->cache_type = DPT_NO_CACHE;
|
|
return;
|
|
}
|
|
while (DPT_HCP_CODE(param) != 6) {
|
|
param = DPT_HCP_NEXT(param);
|
|
if ((param < buff)
|
|
|| (param >= &buff[bytes])) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (param[4] & 0x2) {
|
|
/**
|
|
* Cache disabled
|
|
*/
|
|
dpt->cache_type = DPT_NO_CACHE;
|
|
return;
|
|
}
|
|
if (param[4] & 0x4) {
|
|
dpt->cache_type = DPT_CACHE_WRITETHROUGH;
|
|
return;
|
|
}
|
|
dpt->cache_size = param[5]
|
|
| (param[6] < 8)
|
|
| (param[7] << 16)
|
|
| (param[8] << 24);
|
|
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Initializes the softc structure and allocate all sorts of storage.
|
|
* Returns 0 on good luck, 1-n otherwise (error condition sensitive).
|
|
*/
|
|
|
|
int
|
|
dpt_setup(dpt_softc_t * dpt, dpt_conf_t * conf)
|
|
{
|
|
dpt_inq_t *board_data;
|
|
u_long rev;
|
|
int ndx;
|
|
int ospl;
|
|
dpt_ccb_t *ccb;
|
|
|
|
board_data = dpt_get_board_data(dpt, conf->scsi_id0);
|
|
if (board_data == NULL) {
|
|
printf("dpt%d ERROR: Get_board_data() failure. "
|
|
"Setup ignored!\n", dpt->unit);
|
|
return (1);
|
|
}
|
|
dpt->total_ccbs_count = 0;
|
|
dpt->free_ccbs_count = 0;
|
|
dpt->waiting_ccbs_count = 0;
|
|
dpt->submitted_ccbs_count = 0;
|
|
dpt->completed_ccbs_count = 0;
|
|
|
|
switch (ntohl(conf->splen)) {
|
|
case DPT_EATA_REVA:
|
|
dpt->EATA_revision = 'a';
|
|
break;
|
|
case DPT_EATA_REVB:
|
|
dpt->EATA_revision = 'b';
|
|
break;
|
|
case DPT_EATA_REVC:
|
|
dpt->EATA_revision = 'c';
|
|
break;
|
|
case DPT_EATA_REVZ:
|
|
dpt->EATA_revision = 'z';
|
|
break;
|
|
default:
|
|
dpt->EATA_revision = '?';
|
|
}
|
|
|
|
(void) memcpy(&dpt->board_data, board_data, sizeof(dpt_inq_t));
|
|
|
|
dpt->bustype = IS_PCI; /* We only support and operate on PCI devices */
|
|
dpt->channels = conf->MAX_CHAN + 1;
|
|
dpt->max_id = conf->MAX_ID;
|
|
dpt->max_lun = conf->MAX_LUN;
|
|
dpt->state |= DPT_HA_OK;
|
|
|
|
if (conf->SECOND)
|
|
dpt->primary = FALSE;
|
|
else
|
|
dpt->primary = TRUE;
|
|
|
|
dpt->more_support = conf->MORE_support;
|
|
|
|
if (board_data == NULL) {
|
|
rev = ('?' << 24)
|
|
| ('-' << 16)
|
|
| ('?' << 8)
|
|
| '-';
|
|
} else {
|
|
/* Convert from network byte order to a "string" */
|
|
rev = (dpt->board_data.firmware[0] << 24)
|
|
| (dpt->board_data.firmware[1] << 16)
|
|
| (dpt->board_data.firmware[2] << 8)
|
|
| dpt->board_data.firmware[3];
|
|
}
|
|
|
|
if (rev >= (('0' << 24) + ('7' << 16) + ('G' << 8) + '0'))
|
|
dpt->immediate_support = 1;
|
|
else
|
|
dpt->immediate_support = 0;
|
|
|
|
dpt->broken_INQUIRY = FALSE;
|
|
|
|
for (ndx = 0; ndx < MAX_CHANNELS; ndx++)
|
|
dpt->resetlevel[ndx] = DPT_HA_OK;
|
|
|
|
dpt->cplen = ntohl(conf->cplen);
|
|
dpt->cppadlen = ntohs(conf->cppadlen);
|
|
dpt->queuesize = ntohs(conf->queuesiz);
|
|
|
|
dpt->hostid[0] = conf->scsi_id0;
|
|
dpt->hostid[1] = conf->scsi_id1;
|
|
dpt->hostid[2] = conf->scsi_id2;
|
|
|
|
if (conf->SG_64K) {
|
|
dpt->sgsize = SG_SIZE_BIG;
|
|
} else if ((ntohs(conf->SGsiz) < 1)
|
|
|| (ntohs(conf->SGsiz) > SG_SIZE)) {
|
|
/* Just a sanity check */
|
|
dpt->sgsize = SG_SIZE;
|
|
} else {
|
|
dpt->sgsize = ntohs(conf->SGsiz);
|
|
}
|
|
|
|
if (dpt->sgsize > dpt_max_segs)
|
|
dpt->sgsize = dpt_max_segs;
|
|
|
|
if (dpt_alloc_freelist(dpt) != 0) {
|
|
return (2);
|
|
}
|
|
/* Prepare for Target Mode */
|
|
ospl = splsoftcam();
|
|
dpt->target_mode_enabled = 1;
|
|
splx(ospl);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* The following function returns a pointer to a buffer which MUST be freed by
|
|
* The caller, a la free(result, M_DEVBUF)
|
|
*
|
|
* This function (and its like) assumes it is only running during system
|
|
* initialization!
|
|
*/
|
|
static dpt_inq_t *
|
|
dpt_get_board_data(dpt_softc_t * dpt, u_int32_t target_id)
|
|
{
|
|
/* get_conf returns 512 bytes, most of which are zeros... */
|
|
return ((dpt_inq_t *) dpt_get_conf(dpt, 0, target_id,
|
|
sizeof(dpt_inq_t), 0));
|
|
}
|
|
|
|
/**
|
|
* The following function returns a pointer to a buffer which MUST be freed by
|
|
* the caller, a la ``free(result, M_TEMP);''
|
|
*/
|
|
dpt_conf_t *
|
|
dpt_get_conf(dpt_softc_t * dpt, u_int8_t page, u_int8_t target,
|
|
u_int8_t size, int extent)
|
|
{
|
|
dpt_sp_t sp;
|
|
eata_ccb_t cp;
|
|
|
|
/* Get_conf returns 512 bytes, most of which are zeros... */
|
|
dpt_conf_t *config;
|
|
|
|
u_short *ip;
|
|
u_int8_t status, sig1, sig2, sig3;
|
|
|
|
int ndx;
|
|
int ospl;
|
|
int result;
|
|
|
|
struct scsi_sense_data snp;
|
|
if ((config = (dpt_conf_t *) malloc(512, M_TEMP, M_WAITOK)) == NULL)
|
|
return (NULL);
|
|
|
|
bzero(&cp, sizeof(eata_ccb_t));
|
|
bzero((int8_t *) & sp, sizeof(dpt_sp_t));
|
|
bzero(config, size);
|
|
|
|
cp.Interpret = 1;
|
|
cp.DataIn = 1;
|
|
cp.Auto_Req_Sen = 1;
|
|
cp.reqlen = sizeof(struct scsi_sense_data);
|
|
|
|
cp.cp_id = target;
|
|
cp.cp_LUN = 0; /* In the EATA packet */
|
|
cp.cp_lun = 0; /* In the SCSI command */
|
|
|
|
cp.cp_scsi_cmd = INQUIRY;
|
|
cp.cp_len = size;
|
|
|
|
cp.cp_extent = extent;
|
|
|
|
cp.cp_page = page;
|
|
cp.cp_channel = 0; /* DNC, Interpret mode is set */
|
|
cp.cp_identify = 1;
|
|
cp.cp_datalen = htonl(size);
|
|
cp.cp_dataDMA = htonl(vtophys(config));
|
|
cp.cp_statDMA = htonl(vtophys(&sp));
|
|
cp.cp_reqDMA = htonl(vtophys(&snp));
|
|
cp.cp_viraddr = (u_int32_t) & cp;
|
|
|
|
ospl = splcam();
|
|
|
|
#ifdef DPT_RESET_BOARD
|
|
printf("dpt%d: get_conf() resetting HBA at %x.\n",
|
|
dpt->unit, BaseRegister(dpt));
|
|
dpt_outb(dpt, HA_WCOMMAND, EATA_CMD_RESET);
|
|
DELAY(750000);
|
|
#endif
|
|
|
|
/**
|
|
* This could be a simple for loop, but we suspected the compiler To
|
|
* have optimized it a bit too much. Wait for the controller to
|
|
* become ready
|
|
*/
|
|
while ((((status = dpt_inb(dpt, HA_RSTATUS)) != (HA_SREADY | HA_SSC))
|
|
&& (status != (HA_SREADY | HA_SSC | HA_SERROR))
|
|
&& /* This results from the `wd' probe at our
|
|
* addresses */
|
|
(status != (HA_SDRDY | HA_SERROR | HA_SDRQ)))
|
|
|| (dpt_wait(dpt, HA_SBUSY, 0))) {
|
|
/**
|
|
* RAID Drives still Spinning up? (This should only occur if
|
|
* the DPT controller is in a NON PC (PCI?) platform).
|
|
*/
|
|
if (dpt_raid_busy(dpt)) {
|
|
printf("dpt%d WARNING: Get_conf() RSUS failed for "
|
|
"HBA at %x\n", dpt->unit, BaseRegister(dpt));
|
|
free(config, M_TEMP);
|
|
splx(ospl);
|
|
return (NULL);
|
|
}
|
|
}
|
|
|
|
DptStat_Reset_BUSY(&sp);
|
|
|
|
/**
|
|
* XXXX We might want to do something more clever than aborting at
|
|
* this point, like resetting (rebooting) the controller and trying
|
|
* again.
|
|
*/
|
|
if ((result = dpt_send_eata_command(dpt, &cp, EATA_CMD_DMA_SEND_CP,
|
|
10000, 0, 0, 0)) != 0) {
|
|
printf("dpt%d WARNING: Get_conf() failed (%d) to send "
|
|
"EATA_CMD_DMA_READ_CONFIG\n",
|
|
dpt->unit, result);
|
|
free(config, M_TEMP);
|
|
splx(ospl);
|
|
return (NULL);
|
|
}
|
|
/* Wait for two seconds for a response. This can be slow */
|
|
for (ndx = 0;
|
|
(ndx < 20000)
|
|
&& !((status = dpt_inb(dpt, HA_RAUXSTAT)) & HA_AIRQ);
|
|
ndx++) {
|
|
DELAY(50);
|
|
}
|
|
|
|
/* Grab the status and clear interrupts */
|
|
status = dpt_inb(dpt, HA_RSTATUS);
|
|
|
|
splx(ospl);
|
|
|
|
/**
|
|
* Check the status carefully. Return only if the
|
|
* command was successful.
|
|
*/
|
|
if (((status & HA_SERROR) == 0)
|
|
&& (sp.hba_stat == 0)
|
|
&& (sp.scsi_stat == 0)
|
|
&& (sp.residue_len == 0)) {
|
|
return (config);
|
|
}
|
|
free(config, M_TEMP);
|
|
return (NULL);
|
|
}
|
|
|
|
/* This gets called once per SCSI bus defined in config! */
|
|
|
|
int
|
|
dpt_attach(dpt_softc_t * dpt)
|
|
{
|
|
struct scsibus_data *scbus;
|
|
|
|
int ndx;
|
|
int idx;
|
|
int channel;
|
|
int target;
|
|
int lun;
|
|
|
|
struct scsi_inquiry_data *inq;
|
|
|
|
for (ndx = 0; ndx < dpt->channels; ndx++) {
|
|
/**
|
|
* We do not setup target nor lun on the assumption that
|
|
* these are being set for individual devices that will be
|
|
* attached to the bus later.
|
|
*/
|
|
dpt->sc_scsi_link[ndx].adapter_unit = dpt->unit;
|
|
dpt->sc_scsi_link[ndx].adapter_targ = dpt->hostid[ndx];
|
|
dpt->sc_scsi_link[ndx].fordriver = 0;
|
|
dpt->sc_scsi_link[ndx].adapter_softc = dpt;
|
|
dpt->sc_scsi_link[ndx].adapter = &dpt_switch;
|
|
|
|
/*
|
|
* These appear to be the # of openings per that DEVICE, not
|
|
* the DPT!
|
|
*/
|
|
dpt->sc_scsi_link[ndx].opennings = dpt->queuesize;
|
|
dpt->sc_scsi_link[ndx].device = &dpt_dev;
|
|
dpt->sc_scsi_link[ndx].adapter_bus = ndx;
|
|
|
|
/**
|
|
* Prepare the scsibus_data area for the upperlevel scsi
|
|
* code.
|
|
*/
|
|
if ((scbus = scsi_alloc_bus()) == NULL)
|
|
return 0;
|
|
|
|
dpt->sc_scsi_link[ndx].scsibus = ndx;
|
|
scbus->maxtarg = dpt->max_id;
|
|
scbus->adapter_link = &dpt->sc_scsi_link[ndx];
|
|
|
|
/*
|
|
* Invite the SCSI control layer to probe the busses.
|
|
*/
|
|
|
|
dpt->handle_interrupts = 1; /* Now we are ready to work */
|
|
scsi_attachdevs(scbus);
|
|
scbus = (struct scsibus_data *) NULL;
|
|
}
|
|
|
|
return (1);
|
|
}
|
|
|
|
/**
|
|
* Allocate another chunk of CCB's. Return 0 on success, 1 otherwise.
|
|
* If the free list is empty, we allocate a block of entries and add them
|
|
* to the list. We obtain, at most, DPT_FREE_LIST_INCREMENT CCB's at a time.
|
|
* If we cannot, we will try fewer entries until we succeed.
|
|
* For every CCB, we allocate a maximal Scatter/Gather list.
|
|
* This routine also initializes all the static data that pertains to this CCB.
|
|
*/
|
|
|
|
/**
|
|
* XXX JGibbs - How big are your SG lists? Remeber that the kernel malloc
|
|
* uses buckets and mallocs in powers of two. So, if your
|
|
* SG list is not a power of two (up to PAGESIZE), you might
|
|
* waste a lot of memory. This was the reason the ahc driver
|
|
* allocats multiple SG lists at a time up to a PAGESIZE.
|
|
* Just something to keep in mind.
|
|
* YYY Simon - Up to 8192 entries, each entry is two ulongs, comes to 64K.
|
|
* In reality they are much smaller, so you are right.
|
|
*/
|
|
static int
|
|
dpt_alloc_freelist(dpt_softc_t * dpt)
|
|
{
|
|
dpt_ccb_t *nccbp;
|
|
dpt_sg_t *sg;
|
|
u_int8_t *buff;
|
|
int ospl;
|
|
int incr;
|
|
int ndx;
|
|
int ccb_count;
|
|
|
|
ccb_count = DPT_FREE_LIST_INCREMENT;
|
|
|
|
#ifdef DPT_RESTRICTED_FREELIST
|
|
if (dpt->total_ccbs_count != 0) {
|
|
printf("dpt%d: Restricted FreeList, No more than %d entries "
|
|
"allowed\n", dpt->unit, dpt->total_ccbs_count);
|
|
return (-1);
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* Allocate a group of dpt_ccb's. Work on the CCB's, one at a time
|
|
*/
|
|
ospl = splsoftcam();
|
|
for (ndx = 0; ndx < ccb_count; ndx++) {
|
|
size_t alloc_size;
|
|
dpt_sg_t *sgbuff;
|
|
|
|
alloc_size = sizeof(dpt_ccb_t); /* About 200 bytes */
|
|
|
|
if (alloc_size > PAGE_SIZE) {
|
|
/*
|
|
* Does not fit in a page. we try to fit in a
|
|
* contigious block of memory. If not, we will, later
|
|
* try to allocate smaller, and smaller chunks. There
|
|
* is a tradeof between memory and performance here.
|
|
* We know.this (crude) algorithm works well on
|
|
* machines with plenty of memory. We have seen it
|
|
* allocate in excess of 8MB.
|
|
*/
|
|
nccbp = (dpt_ccb_t *) contigmalloc(alloc_size,
|
|
M_DEVBUF, M_NOWAIT,
|
|
0, ~0,
|
|
PAGE_SIZE,
|
|
0x10000);
|
|
} else {
|
|
/* fits all in one page */
|
|
nccbp = (dpt_ccb_t *) malloc(alloc_size, M_DEVBUF,
|
|
M_NOWAIT);
|
|
}
|
|
|
|
if (nccbp == (dpt_ccb_t *) NULL) {
|
|
printf("dpt%d ERROR: Alloc_free_list() failed to "
|
|
"allocate %d\n",
|
|
dpt->unit, ndx);
|
|
splx(ospl);
|
|
return (-1);
|
|
}
|
|
alloc_size = sizeof(dpt_sg_t) * dpt->sgsize;
|
|
|
|
if (alloc_size > PAGE_SIZE) {
|
|
/* Does not fit in a page */
|
|
sgbuff = (dpt_sg_t *) contigmalloc(alloc_size,
|
|
M_DEVBUF, M_NOWAIT,
|
|
0, ~0,
|
|
PAGE_SIZE,
|
|
0x10000);
|
|
} else {
|
|
/* fits all in one page */
|
|
sgbuff = (dpt_sg_t *) malloc(alloc_size, M_DEVBUF,
|
|
M_NOWAIT);
|
|
}
|
|
|
|
/**
|
|
* If we cannot allocate sg lists, we do not want the entire
|
|
* list
|
|
*/
|
|
if (sgbuff == (dpt_sg_t *) NULL) {
|
|
free(nccbp, M_DEVBUF);
|
|
--ndx;
|
|
break;
|
|
}
|
|
/* Clean up the mailboxes */
|
|
bzero(sgbuff, alloc_size);
|
|
bzero(nccbp, sizeof(dpt_ccb_t));
|
|
/*
|
|
* this line is nullified by the one below.
|
|
* nccbp->eata_ccb.cp_dataDMA = (u_int32_t) sgbuff; Thanx,
|
|
* Mike!
|
|
*/
|
|
nccbp->sg_list = sgbuff;
|
|
|
|
/**
|
|
* Now that we have a new block of free CCB's, put them into
|
|
* the free list. We always add to the head of the list and
|
|
* always take form the head of the list (LIFO). Each ccb
|
|
* has its own Scatter/Gather list. They are all of the same
|
|
* size, Regardless of how much is used.
|
|
*
|
|
* While looping through all the new CCB's, we initialize them
|
|
* properly. These items NEVER change; They are mostly
|
|
* self-pointers, relative to the CCB itself.
|
|
*/
|
|
dpt_Qpush_free(dpt, nccbp);
|
|
++dpt->total_ccbs_count;
|
|
|
|
nccbp->eata_ccb.cp_dataDMA = htonl(vtophys(nccbp->sg_list));
|
|
nccbp->eata_ccb.cp_viraddr = (u_int32_t) nccbp; /* Unique */
|
|
nccbp->eata_ccb.cp_statDMA = htonl(vtophys(&dpt->sp));
|
|
|
|
/**
|
|
* See dpt_intr for why we make ALL CCB's ``have the same''
|
|
* Status Packet
|
|
*/
|
|
nccbp->eata_ccb.cp_reqDMA = htonl(vtophys(&nccbp->sense_data));
|
|
}
|
|
|
|
splx(ospl);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* Prepare the data area for DMA.
|
|
*/
|
|
static int
|
|
dpt_scatter_gather(dpt_softc_t * dpt, dpt_ccb_t * ccb, u_int32_t data_length,
|
|
caddr_t data)
|
|
{
|
|
int seg;
|
|
int thiskv;
|
|
int bytes_this_seg;
|
|
int bytes_this_page;
|
|
u_int32_t datalen;
|
|
vm_offset_t vaddr;
|
|
u_int32_t paddr;
|
|
u_int32_t nextpaddr;
|
|
dpt_sg_t *sg;
|
|
|
|
/* we start with Scatter/Gather OFF */
|
|
ccb->eata_ccb.scatter = 0;
|
|
|
|
if (data_length) {
|
|
if (ccb->flags & SCSI_DATA_IN) {
|
|
ccb->eata_ccb.DataIn = 1;
|
|
}
|
|
if (ccb->flags & SCSI_DATA_OUT) {
|
|
ccb->eata_ccb.DataOut = 1;
|
|
}
|
|
seg = 0;
|
|
datalen = data_length;
|
|
vaddr = (vm_offset_t) data;
|
|
paddr = vtophys(vaddr);
|
|
ccb->eata_ccb.cp_dataDMA = htonl(vtophys(ccb->sg_list));
|
|
sg = ccb->sg_list;
|
|
|
|
while ((datalen > 0) && (seg < dpt->sgsize)) {
|
|
/* put in the base address and length */
|
|
sg->seg_addr = paddr;
|
|
sg->seg_len = 0;
|
|
|
|
/* do it at least once */
|
|
nextpaddr = paddr;
|
|
|
|
while ((datalen > 0) && (paddr == nextpaddr)) {
|
|
u_int32_t size;
|
|
|
|
/**
|
|
* This page is contiguous (physically) with
|
|
* the the last, just extend the length
|
|
*/
|
|
|
|
/* how far to the end of the page */
|
|
nextpaddr = trunc_page(paddr) + PAGE_SIZE;
|
|
|
|
/* Compute the maximum size */
|
|
|
|
size = nextpaddr - paddr;
|
|
if (size > datalen)
|
|
size = datalen;
|
|
|
|
sg->seg_len += size;
|
|
vaddr += size;
|
|
datalen -= size;
|
|
if (datalen > 0)
|
|
paddr = vtophys(vaddr);
|
|
}
|
|
|
|
/* Next page isn't contiguous, finish the seg */
|
|
sg->seg_addr = htonl(sg->seg_addr);
|
|
sg->seg_len = htonl(sg->seg_len);
|
|
seg++;
|
|
sg++;
|
|
}
|
|
|
|
if (datalen) {
|
|
/* There's still data, must have run out of segs! */
|
|
printf("dpt%d: scsi_cmd() Too Many (%d) DMA segs "
|
|
"(%d bytes left)\n",
|
|
dpt->unit, dpt->sgsize, datalen);
|
|
return (1);
|
|
}
|
|
if (seg == 1) {
|
|
/**
|
|
* After going through all this trouble, we
|
|
* still have only one segment. As an
|
|
* optimization measure, we will do the
|
|
* I/O as a single, non-S/G operation.
|
|
*/
|
|
ccb->eata_ccb.cp_dataDMA = ccb->sg_list[0].seg_addr;
|
|
ccb->eata_ccb.cp_datalen = ccb->sg_list[0].seg_len;
|
|
} else {
|
|
/**
|
|
* There is more than one segment. Use S/G.
|
|
*/
|
|
ccb->eata_ccb.scatter = 1;
|
|
ccb->eata_ccb.cp_datalen =
|
|
htonl(seg * sizeof(dpt_sg_t));
|
|
}
|
|
} else { /* datalen == 0 */
|
|
/* No data xfer */
|
|
ccb->eata_ccb.cp_datalen = 0;
|
|
ccb->eata_ccb.cp_dataDMA = 0;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* This function obtains a CCB for a command and attempts to queue it to the
|
|
* Controller.
|
|
*
|
|
* CCB Obtaining: Is done by getting the first entry in the free list for the
|
|
* HBA. If we fail to get an scb, we send a TRY_LATER to the caller.
|
|
*
|
|
* XXX - JGibbs: XS_DRIVER_STUFFUP is equivalent to failing the I/O in the
|
|
* current SCSI layer.
|
|
*
|
|
* Command Queuing: Is done by putting the command at the end of the waiting
|
|
* queue. This assures fair chance for all commands to be processed.
|
|
* If the queue was empty (has only this, current command in it, we try to
|
|
* submit it to the HBA. Otherwise we return SUCCESSFULLY_QUEUED.
|
|
*/
|
|
|
|
static int32_t
|
|
dpt_scsi_cmd(struct scsi_xfer * xs)
|
|
{
|
|
dpt_softc_t *dpt;
|
|
int incr;
|
|
int ndx;
|
|
int ospl;
|
|
int huh;
|
|
|
|
u_int32_t flags;
|
|
dpt_ccb_t *ccb;
|
|
u_int8_t status;
|
|
u_int32_t aux_status = 0; /* Initialized to shut GCC up */
|
|
int result;
|
|
|
|
int channel, target, lun;
|
|
|
|
struct scsi_inquiry_data *inq;
|
|
|
|
dpt = (dpt_softc_t *) xs->sc_link->adapter_softc;
|
|
|
|
flags = xs->flags;
|
|
channel = xs->sc_link->adapter_bus;
|
|
target = xs->sc_link->target;
|
|
lun = xs->sc_link->lun;
|
|
|
|
#ifdef DPT_HANDLE_TIMEOUTS
|
|
ospl = splsoftcam();
|
|
if ((dpt->state & DPT_HA_TIMEOUTS_SET) == 0) {
|
|
dpt->state |= DPT_HA_TIMEOUTS_SET;
|
|
timeout(dpt_timeout, dpt, hz * 10);
|
|
}
|
|
splx(ospl);
|
|
#endif
|
|
|
|
#ifdef DPT_LOST_IRQ
|
|
ospl = splcam();
|
|
if ((dpt->state & DPT_LOST_IRQ_SET) == 0) {
|
|
printf("dpt%d: Initializing Lost IRQ Timer\n", dpt->unit);
|
|
dpt->state |= DPT_LOST_IRQ_SET;
|
|
timeout(dpt_irq_timeout, dpt, hz);
|
|
}
|
|
splx(ospl);
|
|
#endif
|
|
|
|
/**
|
|
* Examine the command flags and handle properly. XXXX We are not
|
|
* handling external resets right now. Needs to be added. We do not
|
|
* care about the SCSI_NOSLEEP flag as we do not sleep here. We have
|
|
* to observe the SCSI_NOMASK flag, though.
|
|
*/
|
|
if (xs->flags & SCSI_RESET) {
|
|
printf("dpt%d: Unsupported option...\n"
|
|
" I refuse to Reset b%dt%du%d...!\n",
|
|
__FILE__, __LINE__, channel, target, lun);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
return (COMPLETE);
|
|
}
|
|
if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE) {
|
|
printf("dpt%d ERROR: Command \"%s\" recieved for b%dt%du%d\n"
|
|
" but controller is shutdown; Aborting...\n",
|
|
dpt->unit,
|
|
scsi_cmd_name(xs->cmd->opcode),
|
|
channel, target, lun);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
return (COMPLETE);
|
|
}
|
|
if (flags & ITSDONE) {
|
|
printf("dpt%d WARNING: scsi_cmd(%s) already done on "
|
|
"b%dt%du%d?!\n",
|
|
dpt->unit, scsi_cmd_name(xs->cmd->opcode),
|
|
channel, target, lun);
|
|
xs->flags &= ~ITSDONE;
|
|
}
|
|
if (!(flags & INUSE)) {
|
|
printf("dpt%d WARNING: Unit not in use in scsi_cmd(%s) "
|
|
"on b%dt%du%d?!\n",
|
|
dpt->unit, scsi_cmd_name(xs->cmd->opcode), channel,
|
|
target, lun);
|
|
xs->flags |= INUSE;
|
|
}
|
|
/**
|
|
* We do not want to be disrupted when doing this, or another caller
|
|
* may do the same thing.
|
|
*/
|
|
ospl = splsoftcam();
|
|
|
|
/* Process the free list */
|
|
if ((TAILQ_EMPTY(&dpt->free_ccbs)) && dpt_alloc_freelist(dpt)) {
|
|
printf("dpt%d ERROR: Cannot allocate any more free CCB's.\n"
|
|
" Will try later\n",
|
|
dpt->unit);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
splx(ospl);
|
|
return (COMPLETE);
|
|
}
|
|
/* Now grab the newest CCB */
|
|
if ((ccb = dpt_Qpop_free(dpt)) == NULL) {
|
|
/*
|
|
* No need to panic here. We can continue with only as many
|
|
* CCBs as we have.
|
|
*/
|
|
printf("dpt%d ERROR: Got a NULL CCB from pop_free()\n",
|
|
dpt->unit);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
splx(ospl);
|
|
return (COMPLETE);
|
|
}
|
|
#ifdef DPT_HANDLE_TIMEOUTS
|
|
ccb->status &= ~(DPT_CCB_STATE_ABORTED | DPT_CCB_STATE_MARKED_LOST);
|
|
#endif
|
|
|
|
splx(ospl);
|
|
bcopy(xs->cmd, ccb->eata_ccb.cp_cdb, xs->cmdlen);
|
|
|
|
/* Put all the CCB population stuff below */
|
|
ccb->xs = xs;
|
|
ccb->flags = flags;
|
|
/* We NEVER reset the bus from a command */
|
|
ccb->eata_ccb.SCSI_Reset = 0;
|
|
/* We NEVER re-boot the HBA from a * command */
|
|
ccb->eata_ccb.HBA_Init = 0;
|
|
ccb->eata_ccb.Auto_Req_Sen = 1; /* We always want this feature */
|
|
ccb->eata_ccb.reqlen = htonl(sizeof(struct scsi_sense_data));
|
|
ccb->std_callback = NULL;
|
|
ccb->wrbuff_callback = NULL;
|
|
|
|
if (xs->sc_link->target == xs->sc_link->adapter_targ) {
|
|
ccb->eata_ccb.Interpret = 1;
|
|
} else {
|
|
ccb->eata_ccb.Interpret = 0;
|
|
}
|
|
|
|
ccb->eata_ccb.scatter = 0; /* S/G is OFF now */
|
|
ccb->eata_ccb.DataIn = 0;
|
|
ccb->eata_ccb.DataOut = 0;
|
|
|
|
/* At this time we do not deal with the RAID internals */
|
|
ccb->eata_ccb.FWNEST = 0;
|
|
ccb->eata_ccb.Phsunit = 0;
|
|
/* We do not do SMARTROM kind of things */
|
|
ccb->eata_ccb.I_AT = 0;
|
|
/* We do not inhibit the cache at this time */
|
|
ccb->eata_ccb.Disable_Cache = 0;
|
|
ccb->eata_ccb.cp_channel = channel;
|
|
ccb->eata_ccb.cp_id = target;
|
|
ccb->eata_ccb.cp_LUN = lun; /**
|
|
* In the EATA packet. We do not
|
|
* change the SCSI command yet
|
|
*/
|
|
/* We are currently dealing with target LUN's, not ROUTINEs */
|
|
ccb->eata_ccb.cp_luntar = 0;
|
|
|
|
/**
|
|
* XXXX - We grant the target disconnect prvileges, except in polled
|
|
* mode (????).
|
|
*/
|
|
if ((ccb->flags & SCSI_NOMASK) || !dpt->handle_interrupts) {
|
|
ccb->eata_ccb.cp_dispri = 0;
|
|
} else {
|
|
ccb->eata_ccb.cp_dispri = 1;
|
|
}
|
|
|
|
/* we always ask for Identify */
|
|
ccb->eata_ccb.cp_identify = 1;
|
|
|
|
/**
|
|
* These three are used for command queues and tags. How do we use
|
|
* them?
|
|
*
|
|
* XXX - JGibbs: Most likely like so: ccb->eata_ccb.cp_msg[0] =
|
|
* MSG_SIMPLEQ_TAG; ccb->eata_ccb.cp_msg[1] = tagid;
|
|
* ccb->eata_ccb.cp_msg[2] = 0;
|
|
*
|
|
* YYY - Shimon: Thanx! We still do not do that as the current
|
|
* firmware does it automatically, including on RAID arrays.
|
|
*/
|
|
|
|
ccb->eata_ccb.cp_msg[0] = 0;
|
|
ccb->eata_ccb.cp_msg[1] = 0;
|
|
ccb->eata_ccb.cp_msg[2] = 0;
|
|
|
|
/* End of CCB population */
|
|
|
|
if (dpt_scatter_gather(dpt, ccb, xs->datalen, xs->data) != 0) {
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
ospl = splsoftcam();
|
|
dpt_Qpush_free(dpt, ccb);
|
|
splx(ospl);
|
|
return (COMPLETE);
|
|
}
|
|
xs->resid = 0;
|
|
xs->status = 0;
|
|
|
|
/**
|
|
* This is the polled mode section. If we are here to honor
|
|
* SCSI_NOMASK, during scsi_attachdevs(), please notice that
|
|
* interrupts are ENABLED in the system (2.2.1) and that the DPT
|
|
* WILL generate them, unless we turn them off!
|
|
*/
|
|
|
|
/**
|
|
* XXX - JGibbs: Polled mode was a botch at best. It's nice to
|
|
* know that it goes completely away with the CAM code.
|
|
* YYY - Simon: Take it out once the rest is stable. Be careful about
|
|
* how you wait for commands to complete when you switch
|
|
* to interrupt mode in the scanning code (initiated by
|
|
* scsi_attachdevs).
|
|
* Disabling it in 2.2 causes a hung system.
|
|
*/
|
|
|
|
if ((ccb->flags & SCSI_NOMASK) || !dpt->handle_interrupts) {
|
|
/**
|
|
* This is an ``immediate'' command. Poll it! We poll by
|
|
* partially bypassing the queues. We first submit the
|
|
* command by asking dpt_run_queue() to queue it. Then we
|
|
* poll its status packet, until it completes. Then we give
|
|
* it to dpt_process_completion() to analyze and then we
|
|
* return.
|
|
*/
|
|
|
|
/*
|
|
* Increase the number of commands queueable for a device. We
|
|
* force each device to the maximum allowed for its HBA. This
|
|
* appears wrong but all it will do is cause excessive
|
|
* commands to sit in our queue. On the other hand, we can
|
|
* burst as many commands as the DPT can take for a single
|
|
* device. We do it here, so only while in polled mode (early
|
|
* boot) do we waste time on it. We have no clean way
|
|
* to overrule sdattach() zeal in depressing the opennings
|
|
* back to one if it is more than 1.
|
|
*/
|
|
if (xs->sc_link->opennings < dpt->queuesize) {
|
|
xs->sc_link->opennings = dpt->queuesize;
|
|
}
|
|
/**
|
|
* This test only protects us from submitting polled
|
|
* commands during Non-polled times. We assumed polled
|
|
* commands go in serially, one at a time. BTW, we have NOT
|
|
* checked, nor verified the scope of the disaster that WILL
|
|
* follow going into polled mode after being in interrupt
|
|
* mode for any length of time.
|
|
*/
|
|
if (dpt->submitted_ccbs_count < dpt->queuesize) {
|
|
/**
|
|
* Submit the request to the DPT. Unfortunately, ALL
|
|
* this must be done as an atomic operation :-(
|
|
*/
|
|
ccb->eata_ccb.cp_viraddr = (u_int32_t) & ccb;
|
|
#define dpt_SP htonl(vtophys(&ccb->status_packet))
|
|
#define dpt_sense htonl(vtophys(&ccb->sense_data))
|
|
ccb->eata_ccb.cp_statDMA = dpt_SP;
|
|
ccb->eata_ccb.cp_reqDMA = dpt_sense;
|
|
|
|
/* Try to queue a command */
|
|
ospl = splcam();
|
|
result = dpt_send_eata_command(dpt, &ccb->eata_ccb,
|
|
EATA_CMD_DMA_SEND_CP,
|
|
0, 0, 0, 0);
|
|
|
|
if (result != 0) {
|
|
dpt_Qpush_free(dpt, ccb);
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
splx(ospl);
|
|
return (COMPLETE);
|
|
}
|
|
} else {
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
dpt_Qpush_free(dpt, ccb);
|
|
splx(ospl);
|
|
return (COMPLETE);
|
|
}
|
|
|
|
for (ndx = 0;
|
|
(ndx < xs->timeout)
|
|
&& !((aux_status = dpt_inb(dpt, HA_RAUXSTAT))
|
|
& HA_AIRQ);
|
|
ndx++) {
|
|
DELAY(50);
|
|
}
|
|
|
|
/**
|
|
* Get the status and clear the interrupt flag on the
|
|
* controller
|
|
*/
|
|
status = dpt_inb(dpt, HA_RSTATUS);
|
|
splx(ospl);
|
|
|
|
ccb->status_reg = status;
|
|
ccb->aux_status_reg = aux_status;
|
|
/* This will setup the xs flags */
|
|
dpt_process_completion(dpt, ccb);
|
|
|
|
ospl = splsoftcam();
|
|
if ((status & HA_SERROR) || (ndx == xs->timeout)) {
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
}
|
|
|
|
dpt_Qpush_free(dpt, ccb);
|
|
splx(ospl);
|
|
return (COMPLETE);
|
|
} else {
|
|
struct timeval junk;
|
|
|
|
/**
|
|
* Not a polled command.
|
|
* The command can be queued normally.
|
|
* We start a critical section PRIOR to submitting to the DPT,
|
|
* and end it AFTER it moves to the submitted queue.
|
|
* If not, we cal (and will!) be hit with a completion
|
|
* interrupt while the command is in suspense between states.
|
|
*/
|
|
|
|
ospl = splsoftcam();
|
|
ccb->transaction_id = ++dpt->commands_processed;
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
#define cmd_ndx (int)ccb->eata_ccb.cp_scsi_cmd
|
|
++dpt->performance.command_count[cmd_ndx];
|
|
microtime(&junk);
|
|
ccb->command_started = junk;
|
|
#endif
|
|
dpt_Qadd_waiting(dpt, ccb);
|
|
splx(ospl);
|
|
|
|
dpt_sched_queue(dpt);
|
|
}
|
|
|
|
return (SUCCESSFULLY_QUEUED);
|
|
}
|
|
|
|
/**
|
|
* This function returns the transfer size in bytes,
|
|
* as a function of the maximum number of Scatter/Gather
|
|
* segments. It should do so for a given HBA, but right now it returns
|
|
* dpt_min_segs, which is the SMALLEST number, from the ``weakest'' HBA found.
|
|
*/
|
|
|
|
static void
|
|
dptminphys(struct buf * bp)
|
|
{
|
|
/**
|
|
* This IS a performance sensitive routine.
|
|
* It gets called at least once per I/O. Sometimes more
|
|
*/
|
|
|
|
if (dpt_min_segs == 0) {
|
|
panic("DPT: Minphys without attach!\n");
|
|
}
|
|
if (bp->b_bcount > ((dpt_min_segs - 1) * PAGE_SIZE)) {
|
|
#ifdef DPT_DEBUG_MINPHYS
|
|
printf("DPT: Block size of %x is larger than %x. Truncating\n",
|
|
bp->b_bcount, ((dpt_min_segs - 1) * PAGE_SIZE));
|
|
#endif
|
|
bp->b_bcount = ((dpt_min_segs - 1) * PAGE_SIZE);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This function goes to the waiting queue, peels off a request, gives it to
|
|
* the DPT HBA and returns. It takes care of some housekeeping details first.
|
|
* The requests argument tells us how many requests to try and send to the
|
|
* DPT. A requests = 0 will attempt to send as many as the controller can
|
|
* take.
|
|
*/
|
|
|
|
static void
|
|
dpt_run_queue(dpt_softc_t * dpt, int requests)
|
|
{
|
|
int req;
|
|
int ospl;
|
|
int ndx;
|
|
int result;
|
|
|
|
u_int8_t status, aux_status;
|
|
|
|
eata_ccb_t *ccb;
|
|
dpt_ccb_t *dccb;
|
|
|
|
if (TAILQ_EMPTY(&dpt->waiting_ccbs)) {
|
|
return; /* Nothing to do if the list is empty */
|
|
}
|
|
if (!requests)
|
|
requests = dpt->queuesize;
|
|
|
|
/* Main work loop */
|
|
for (req = 0; (req < requests) && dpt->waiting_ccbs_count
|
|
&& (dpt->submitted_ccbs_count < dpt->queuesize); req++) {
|
|
/**
|
|
* Move the request from the waiting list to the submitted
|
|
* list, and submit to the DPT.
|
|
* We enter a critical section BEFORE even looking at the
|
|
* queue, and exit it AFTER the ccb has moved to a
|
|
* destination queue.
|
|
* This is normally the submitted queue but can be the waiting
|
|
* queue again, if pushing the command into the DPT failed.
|
|
*/
|
|
|
|
ospl = splsoftcam();
|
|
dccb = TAILQ_FIRST(&dpt->waiting_ccbs);
|
|
|
|
if (dccb == NULL) {
|
|
/* We have yet to see one report of this condition */
|
|
panic("dpt%d ERROR: Race condition in run_queue "
|
|
"(w%ds%d)\n",
|
|
dpt->unit, dpt->waiting_ccbs_count,
|
|
dpt->submitted_ccbs_count);
|
|
splx(ospl);
|
|
return;
|
|
}
|
|
dpt_Qremove_waiting(dpt, dccb);
|
|
splx(ospl);
|
|
|
|
/**
|
|
* Assign exact values here. We manipulate these values
|
|
* indirectly elsewhere, so BE CAREFUL!
|
|
*/
|
|
dccb->eata_ccb.cp_viraddr = (u_int32_t) dccb;
|
|
dccb->eata_ccb.cp_statDMA = htonl(vtophys(&dpt->sp));
|
|
dccb->eata_ccb.cp_reqDMA = htonl(vtophys(&dccb->sense_data));
|
|
|
|
if (dccb->xs != NULL)
|
|
bzero(&dccb->xs->sense, sizeof(struct scsi_sense_data));
|
|
|
|
/* Try to queue a command */
|
|
ospl = splcam();
|
|
|
|
if ((result = dpt_send_eata_command(dpt, &dccb->eata_ccb,
|
|
EATA_CMD_DMA_SEND_CP, 0,
|
|
0, 0, 0)) != 0) {
|
|
dpt_Qpush_waiting(dpt, dccb);
|
|
splx(ospl);
|
|
return;
|
|
}
|
|
dpt_Qadd_submitted(dpt, dccb);
|
|
splx(ospl);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This is the interrupt handler for the DPT driver.
|
|
* This routine runs at splcam (or whatever was configured for this device).
|
|
*/
|
|
|
|
void
|
|
dpt_intr(void *arg)
|
|
{
|
|
dpt_softc_t *dpt;
|
|
dpt_softc_t *ldpt;
|
|
|
|
u_int8_t status, aux_status;
|
|
|
|
dpt_ccb_t *dccb;
|
|
dpt_ccb_t *tccb;
|
|
eata_ccb_t *ccb;
|
|
|
|
dpt = (dpt_softc_t *) arg;
|
|
|
|
#ifdef DPT_INTR_DELAY
|
|
DELAY(DPT_INTR_DELAY);
|
|
#endif
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
{
|
|
struct timeval junk;
|
|
|
|
microtime(&junk);
|
|
dpt->performance.intr_started = junk;
|
|
}
|
|
#endif
|
|
|
|
/* First order of business is to check if this interrupt is for us */
|
|
aux_status = dpt_inb(dpt, HA_RAUXSTAT);
|
|
if (!(aux_status & HA_AIRQ)) {
|
|
#ifdef DPT_LOST_IRQ
|
|
if (dpt->state & DPT_LOST_IRQ_ACTIVE) {
|
|
dpt->state &= ~DPT_LOST_IRQ_ACTIVE;
|
|
return;
|
|
}
|
|
#endif
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
++dpt->performance.spurious_interrupts;
|
|
#endif
|
|
return;
|
|
}
|
|
if (!dpt->handle_interrupts) {
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
++dpt->performance.aborted_interrupts;
|
|
#endif
|
|
status = dpt_inb(dpt, HA_RSTATUS); /* This CLEARS
|
|
* interrupts */
|
|
return;
|
|
}
|
|
/**
|
|
* What we want to do now, is to capture the status, all of it, move
|
|
* it where it belongs, wake up whoever sleeps waiting to process
|
|
* this result, and get out of here.
|
|
*/
|
|
|
|
dccb = dpt->sp.ccb; /**
|
|
* There is a very SERIOUS and dangerous
|
|
* assumption here. We assume that EVERY
|
|
* interrupt is in response to some request we
|
|
* put to the DPT. IOW, we assume that the
|
|
* Virtual Address of CP always has a valid
|
|
* pointer that we put in! How will the DPT
|
|
* behave if it is in Target mode? How does it
|
|
* (and our driver) know it switches from
|
|
* Initiator to target? What will the SP be
|
|
* when a target mode interrupt is received?
|
|
*/
|
|
|
|
#ifdef DPT_VERIFY_HINTR
|
|
dpt->sp.ccb = (dpt_ccb_t *) 0x55555555;
|
|
#else
|
|
dpt->sp.ccb = (dpt_ccb_t *) NULL;
|
|
#endif
|
|
|
|
#ifdef DPT_HANDLE_TIMEOUTS
|
|
if (dccb->state & DPT_CCB_STATE_MARKED_LOST) {
|
|
struct timeval now;
|
|
u_int32_t age;
|
|
struct scsi_xfer *xs = dccb->xs;
|
|
|
|
microtime(&now);
|
|
age = dpt_time_delta(dccb->command_started, now);
|
|
|
|
printf("dpt%d: Salvaging Tx %d from the jaws of destruction "
|
|
"(%d/%d)\n",
|
|
dpt->unit, dccb->transaction_id, xs->timeout, age);
|
|
dccb->state |= DPT_CCB_STATE_MARKED_SALVAGED;
|
|
dccb->state &= ~DPT_CCB_STATE_MARKED_LOST;
|
|
}
|
|
#endif
|
|
|
|
/* Ignore status packets with EOC not set */
|
|
if (dpt->sp.EOC == 0) {
|
|
printf("dpt%d ERROR: Request %d recieved with clear EOC.\n"
|
|
" Marking as LOST.\n",
|
|
dpt->unit, dccb->transaction_id);
|
|
#ifdef DPT_VERIFY_HINTR
|
|
dpt->sp.ccb = (dpt_sp_t *) 0x55555555;
|
|
#else
|
|
dpt->sp.ccb = (dpt_sp_t *) NULL;
|
|
#endif
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
++dpt->performance.aborted_interrupts;
|
|
#endif
|
|
|
|
#ifdef DPT_HANDLE_TIMEOUTS
|
|
dccb->state |= DPT_CCB_STATE_MARKED_LOST;
|
|
#endif
|
|
/* This CLEARS the interrupt! */
|
|
status = dpt_inb(dpt, HA_RSTATUS);
|
|
return;
|
|
}
|
|
dpt->sp.EOC = 0;
|
|
|
|
#ifdef DPT_VERIFY_HINTR
|
|
/*
|
|
* Make SURE the next caller is legitimate. If they are not, we will
|
|
* find 0x55555555 here. We see 0x000000 or 0xffffffff when the PCi
|
|
* bus has DMA troubles (as when behing a PCI-PCI * bridge .
|
|
*/
|
|
if ((dccb == NULL)
|
|
|| (dccb == (dpt_ccb_t *) ~ 0)
|
|
|| (dccb == (dpt_ccb_t *) 0x55555555)) {
|
|
printf("dpt%d: BAD (%x) CCB in SP (AUX status = %s).\n",
|
|
dpt->unit, dccb, i2bin((unsigned long) aux_status,
|
|
sizeof(aux_status) * 8));
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
++dpt->performance.aborted_interrupts;
|
|
#endif
|
|
/* This CLEARS the interrupt! */
|
|
status = dpt_inb(dpt, HA_RSTATUS);
|
|
return;
|
|
}
|
|
for (tccb = TAILQ_FIRST(&dpt->submitted_ccbs);
|
|
(tccb != NULL) && (tccb != dccb);
|
|
tccb = TAILQ_NEXT(tccb, links));
|
|
if (tccb == NULL) {
|
|
printf("dpt%d: %x is not in the SUBMITTED queue\n",
|
|
dpt->unit, dccb);
|
|
|
|
for (tccb = TAILQ_FIRST(&dpt->completed_ccbs);
|
|
(tccb != NULL) && (tccb != dccb);
|
|
tccb = TAILQ_NEXT(tccb, links));
|
|
if (tccb != NULL)
|
|
printf("dpt%d: %x is in the COMPLETED queue\n",
|
|
dpt->unit, dccb);
|
|
|
|
for (tccb = TAILQ_FIRST(&dpt->waiting_ccbs);
|
|
(tccb != NULL) && (tccb != dccb);
|
|
tccb = TAILQ_NEXT(tccb, links));
|
|
if (tccb != NULL)
|
|
printf("dpt%d: %x is in the WAITING queue\n",
|
|
dpt->unit, dccb);
|
|
|
|
for (tccb = TAILQ_FIRST(&dpt->free_ccbs);
|
|
(tccb != NULL) && (tccb != dccb);
|
|
tccb = TAILQ_NEXT(tccb, links));
|
|
if (tccb != NULL)
|
|
printf("dpt%d: %x is in the FREE queue\n",
|
|
dpt->unit, dccb);
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
++dpt->performance.aborted_interrupts;
|
|
#endif
|
|
/* This CLEARS the interrupt! */
|
|
status = dpt_inb(dpt, HA_RSTATUS);
|
|
return;
|
|
}
|
|
#endif /* DPT_VERIFY_HINTR */
|
|
|
|
/**
|
|
* Copy the status packet from the general area to the dpt_ccb.
|
|
* According to Mark Salyzyn, we only need few pieces of it.
|
|
* Originally we had:
|
|
* bcopy((void *) &dpt->sp, (void *) &dccb->status_packet,
|
|
* sizeof(dpt_sp_t));
|
|
*/
|
|
dccb->status_packet.hba_stat = dpt->sp.hba_stat;
|
|
dccb->status_packet.scsi_stat = dpt->sp.scsi_stat;
|
|
dccb->status_packet.residue_len = dpt->sp.residue_len;
|
|
|
|
/* Make sure the EOC bit is OFF! */
|
|
dpt->sp.EOC = 0;
|
|
|
|
/* Clear interrupts, check for error */
|
|
if ((status = dpt_inb(dpt, HA_RSTATUS)) & HA_SERROR) {
|
|
/**
|
|
* Error Condition. Check for magic cookie. Exit this test
|
|
* on earliest sign of non-reset condition
|
|
*/
|
|
|
|
/* Check that this is not a board reset interrupt */
|
|
if (dpt_just_reset(dpt)) {
|
|
printf("dpt%d: HBA rebooted.\n"
|
|
" All transactions should be "
|
|
"resubmitted\n",
|
|
dpt->unit);
|
|
|
|
printf("dpt%d: >>---->> This is incomplete, fix me"
|
|
".... <<----<<",
|
|
dpt->unit);
|
|
printf(" Incomplete Code; Re-queue the lost "
|
|
"commands\n",
|
|
dpt->unit);
|
|
Debugger("DPT Rebooted");
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
++dpt->performance.aborted_interrupts;
|
|
#endif
|
|
return;
|
|
}
|
|
}
|
|
dccb->status_reg = status;
|
|
dccb->aux_status_reg = aux_status;
|
|
|
|
/* Mark BOTH queues as busy */
|
|
dpt->queue_status |= (DPT_SUBMITTED_QUEUE_ACTIVE
|
|
| DPT_COMPLETED_QUEUE_ACTIVE);
|
|
dpt_Qremove_submitted(dpt, dccb);
|
|
dpt_Qadd_completed(dpt, dccb);
|
|
dpt->queue_status &= ~(DPT_SUBMITTED_QUEUE_ACTIVE
|
|
| DPT_COMPLETED_QUEUE_ACTIVE);
|
|
dpt_sched_queue(dpt);
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
{
|
|
u_int32_t result;
|
|
struct timeval junk;
|
|
|
|
microtime(&junk);
|
|
|
|
result = dpt_time_delta(dpt->performance.intr_started, junk);
|
|
|
|
if (result != ~0) {
|
|
if (dpt->performance.max_intr_time < result)
|
|
dpt->performance.max_intr_time = result;
|
|
|
|
if (result < dpt->performance.min_intr_time) {
|
|
dpt->performance.min_intr_time = result;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* This function is the DPT_ISR Software Interrupt Service Routine. When the
|
|
* DPT completes a SCSI command, it puts the results in a Status Packet, sets
|
|
* up two 1-byte registers and generates an interrupt. We catch this
|
|
* interrupt in dpt_intr and copy the whole status to the proper CCB. Once
|
|
* this is done, we generate a software interrupt that calls this routine.
|
|
* The routine then scans ALL the complete queues of all the DPT HBA's and
|
|
* processes ALL the commands that are in the queue.
|
|
*
|
|
* XXXX REMEMBER: We always scan ALL the queues of all the HBA's. Always
|
|
* starting with the first controller registered (dpt0). This creates
|
|
* an ``unfair'' opportunity for the first controllers in being served.
|
|
* Careful instrumentation may prove a need to change this policy.
|
|
*
|
|
* This command rns at splSOFTcam. Remember that.
|
|
*/
|
|
|
|
static void
|
|
dpt_sintr(void)
|
|
{
|
|
dpt_softc_t *dpt;
|
|
int ospl;
|
|
|
|
/* Find which DPT needs help */
|
|
for (dpt = TAILQ_FIRST(&dpt_softc_list);
|
|
dpt != NULL;
|
|
dpt = TAILQ_NEXT(dpt, links)) {
|
|
/*
|
|
* Drain the completed queue, to make room for new, " waiting
|
|
* requests. We change to splcam to block interrupts from
|
|
* mucking with " the completed queue
|
|
*/
|
|
ospl = splcam();
|
|
if (dpt->queue_status & DPT_SINTR_ACTIVE) {
|
|
splx(ospl);
|
|
continue;
|
|
}
|
|
dpt->queue_status |= DPT_SINTR_ACTIVE;
|
|
|
|
if (!TAILQ_EMPTY(&dpt->completed_ccbs)) {
|
|
splx(ospl);
|
|
dpt_complete(dpt);
|
|
ospl = splcam();
|
|
}
|
|
/* Submit as many waiting requests as the DPT can take */
|
|
if (!TAILQ_EMPTY(&dpt->waiting_ccbs)) {
|
|
dpt_run_queue(dpt, 0);
|
|
}
|
|
dpt->queue_status &= ~DPT_SINTR_ACTIVE;
|
|
splx(ospl);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Scan the complete queue for a given controller and process ALL the completed
|
|
* commands in the queue.
|
|
*/
|
|
|
|
static void
|
|
dpt_complete(dpt_softc_t * dpt)
|
|
{
|
|
dpt_ccb_t *ccb;
|
|
int ospl;
|
|
|
|
ospl = splcam();
|
|
|
|
if (dpt->queue_status & DPT_COMPLETED_QUEUE_ACTIVE) {
|
|
splx(ospl);
|
|
return;
|
|
}
|
|
dpt->queue_status |= DPT_COMPLETED_QUEUE_ACTIVE;
|
|
|
|
while ((ccb = TAILQ_FIRST(&dpt->completed_ccbs)) != NULL) {
|
|
struct scsi_xfer *xs;
|
|
|
|
dpt_Qremove_completed(dpt, ccb);
|
|
splx(ospl);
|
|
|
|
/* Process this completed request */
|
|
if (dpt_process_completion(dpt, ccb) == 0) {
|
|
xs = ccb->xs;
|
|
|
|
if (ccb->std_callback != NULL) {
|
|
(ccb->std_callback) (dpt, ccb->eata_ccb.cp_channel,
|
|
ccb);
|
|
} else {
|
|
ospl = splcam();
|
|
dpt_Qpush_free(dpt, ccb);
|
|
splx(ospl);
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
{
|
|
u_int32_t result;
|
|
struct timeval junk;
|
|
|
|
microtime(&junk);
|
|
ccb->command_ended = junk;
|
|
#define time_delta dpt_time_delta(ccb->command_started, ccb->command_ended)
|
|
result = time_delta;
|
|
#define maxctime dpt->performance.max_command_time[ccb->eata_ccb.cp_scsi_cmd]
|
|
#define minctime dpt->performance.min_command_time[ccb->eata_ccb.cp_scsi_cmd]
|
|
|
|
if (result != ~0) {
|
|
if (maxctime < result) {
|
|
maxctime = result;
|
|
}
|
|
if ((minctime == 0)
|
|
|| (minctime > result))
|
|
minctime = result;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
scsi_done(xs);
|
|
}
|
|
ospl = splcam();
|
|
}
|
|
}
|
|
splx(ospl);
|
|
|
|
/**
|
|
* As per Justin's suggestion, we now will call the run_queue for
|
|
* this HBA. This is done in case there are left-over requests that
|
|
* were not submitted yet.
|
|
*/
|
|
dpt_run_queue(dpt, 0);
|
|
ospl = splsoftcam();
|
|
dpt->queue_status &= ~DPT_COMPLETED_QUEUE_ACTIVE;
|
|
splx(ospl);
|
|
}
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
/**
|
|
* Given a dpt_ccb and a scsi_xfr structures,
|
|
* this functions translates the result of a SCSI operation.
|
|
* It returns values in the structures pointed by the arguments.
|
|
* This function does NOT attempt to protect itself from bad influence!
|
|
*/
|
|
|
|
#define WRITE_OP 1
|
|
#define READ_OP 2
|
|
#define min_submitR dpt->performance.read_by_size_min_time[index]
|
|
#define max_submitR dpt->performance.read_by_size_max_time[index]
|
|
#define min_submitW dpt->performance.write_by_size_min_time[index]
|
|
#define max_submitW dpt->performance.write_by_size_max_time[index]
|
|
|
|
static void
|
|
dpt_IObySize(dpt_softc_t * dpt, dpt_ccb_t * ccb, int op, int index)
|
|
{
|
|
if (op == READ_OP) {
|
|
++dpt->performance.read_by_size_count[index];
|
|
if (ccb->submitted_time < min_submitR)
|
|
min_submitR = ccb->submitted_time;
|
|
|
|
if (ccb->submitted_time > max_submitR)
|
|
max_submitR = ccb->submitted_time;
|
|
} else { /* WRITE operation */
|
|
++dpt->performance.write_by_size_count[index];
|
|
if (ccb->submitted_time < min_submitW)
|
|
min_submitW = ccb->submitted_time;
|
|
|
|
if (ccb->submitted_time > max_submitW)
|
|
max_submitW = ccb->submitted_time;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
dpt_process_completion(dpt_softc_t * dpt,
|
|
dpt_ccb_t * ccb)
|
|
{
|
|
int ospl;
|
|
struct scsi_xfer *xs;
|
|
|
|
if (ccb == NULL) {
|
|
panic("dpt%d: Improper argumet to process_completion (%p%p)\n",
|
|
dpt->unit, ccb);
|
|
} else {
|
|
xs = ccb->xs;
|
|
}
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
{
|
|
u_int32_t size;
|
|
struct scsi_rw_big *cmd;
|
|
int op_type;
|
|
|
|
cmd = (struct scsi_rw_big *) & ccb->eata_ccb.cp_scsi_cmd;
|
|
|
|
switch (cmd->op_code) {
|
|
case 0xa8: /* 12-byte READ */
|
|
case 0x08: /* 6-byte READ */
|
|
case 0x28: /* 10-byte READ */
|
|
op_type = READ_OP;
|
|
break;
|
|
case 0x0a: /* 6-byte WRITE */
|
|
case 0xaa: /* 12-byte WRITE */
|
|
case 0x2a: /* 10-byte WRITE */
|
|
op_type = WRITE_OP;
|
|
break;
|
|
default:
|
|
op_type = 0;
|
|
break;
|
|
}
|
|
|
|
if (op_type != 0) {
|
|
|
|
size = (((u_int32_t) cmd->length2 << 8)
|
|
| ((u_int32_t) cmd->length1)) << 9;
|
|
|
|
switch (size) {
|
|
case 512:
|
|
dpt_IObySize(dpt, ccb, op_type, SIZE_512);
|
|
break;
|
|
case 1024:
|
|
dpt_IObySize(dpt, ccb, op_type, SIZE_1K);
|
|
break;
|
|
case 2048:
|
|
dpt_IObySize(dpt, ccb, op_type, SIZE_2K);
|
|
break;
|
|
case 4096:
|
|
dpt_IObySize(dpt, ccb, op_type, SIZE_4K);
|
|
break;
|
|
case 8192:
|
|
dpt_IObySize(dpt, ccb, op_type, SIZE_8K);
|
|
break;
|
|
case 16384:
|
|
dpt_IObySize(dpt, ccb, op_type, SIZE_16K);
|
|
break;
|
|
case 32768:
|
|
dpt_IObySize(dpt, ccb, op_type, SIZE_32K);
|
|
break;
|
|
case 65536:
|
|
dpt_IObySize(dpt, ccb, op_type, SIZE_64K);
|
|
break;
|
|
default:
|
|
if (size > (1 << 16))
|
|
dpt_IObySize(dpt, ccb, op_type,
|
|
SIZE_BIGGER);
|
|
|
|
else
|
|
dpt_IObySize(dpt, ccb, op_type,
|
|
SIZE_OTHER);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#endif /* DPT_MEASURE_PERFORMANCE */
|
|
|
|
|
|
switch ((int) ccb->status_packet.hba_stat) {
|
|
case HA_NO_ERROR:
|
|
if (xs != NULL) {
|
|
xs->error = XS_NOERROR;
|
|
xs->flags |= SCSI_ITSDONE;
|
|
}
|
|
break;
|
|
case HA_ERR_SEL_TO:
|
|
case HA_ERR_CMD_TO:
|
|
if (xs != NULL) {
|
|
xs->error |= XS_SELTIMEOUT;
|
|
xs->flags |= SCSI_ITSDONE;
|
|
}
|
|
break;
|
|
case HA_SCSIBUS_RESET:
|
|
case HA_CP_ABORTED:
|
|
case HA_CP_RESET:
|
|
case HA_PCI_PARITY:
|
|
case HA_PCI_MABORT:
|
|
case HA_PCI_TABORT:
|
|
case HA_PCI_STABORT:
|
|
case HA_BUS_PARITY:
|
|
case HA_UNX_MSGRJCT:
|
|
if (ccb->retries++ > DPT_RETRIES) {
|
|
if (xs != NULL) {
|
|
xs->error |= XS_SENSE;
|
|
xs->flags |= SCSI_ITSDONE;
|
|
}
|
|
} else {
|
|
ospl = splsoftcam();
|
|
dpt_Qpush_waiting(dpt, ccb);
|
|
splx(ospl);
|
|
dpt_sched_queue(dpt);
|
|
}
|
|
break;
|
|
case HA_HBA_POWER_UP:
|
|
case HA_UNX_BUSPHASE:
|
|
case HA_UNX_BUS_FREE:
|
|
case HA_SCSI_HUNG:
|
|
case HA_RESET_STUCK:
|
|
if (ccb->retries++ > DPT_RETRIES) {
|
|
if (xs != NULL) {
|
|
xs->error |= XS_SENSE;
|
|
xs->flags |= SCSI_ITSDONE;
|
|
}
|
|
} else {
|
|
ospl = splsoftcam();
|
|
dpt_Qpush_waiting(dpt, ccb);
|
|
splx(ospl);
|
|
dpt_sched_queue(dpt);
|
|
return (1);
|
|
}
|
|
break;
|
|
case HA_RSENSE_FAIL:
|
|
if (ccb->status_packet.EOC) {
|
|
if (xs != NULL) {
|
|
xs->error |= XS_SENSE;
|
|
xs->flags |= SCSI_ITSDONE;
|
|
}
|
|
} else {
|
|
if (ccb->retries++ > DPT_RETRIES) {
|
|
if (xs != NULL) {
|
|
xs->error |= XS_SENSE;
|
|
xs->flags |= SCSI_ITSDONE;
|
|
}
|
|
} else {
|
|
ospl = splsoftcam();
|
|
dpt_Qpush_waiting(dpt, ccb);
|
|
splx(ospl);
|
|
dpt_sched_queue(dpt);
|
|
return (1);
|
|
}
|
|
}
|
|
break;
|
|
case HA_PARITY_ERR:
|
|
case HA_CP_ABORT_NA:
|
|
case HA_CP_RESET_NA:
|
|
case HA_ECC_ERR:
|
|
if (xs != NULL) {
|
|
xs->error |= XS_SENSE;
|
|
xs->flags |= SCSI_ITSDONE;
|
|
}
|
|
break;
|
|
default:
|
|
printf("dpt%d: Undocumented Error %x",
|
|
dpt->unit, ccb->status_packet.hba_stat);
|
|
if (xs != NULL) {
|
|
xs->error |= XS_SENSE;
|
|
xs->flags |= SCSI_ITSDONE;
|
|
}
|
|
Debugger("Please mail this message to shimon@i-connect.net");
|
|
break;
|
|
}
|
|
|
|
if (xs != NULL) {
|
|
if ((xs->error & XS_SENSE))
|
|
bcopy(&ccb->sense_data, &xs->sense,
|
|
sizeof(struct scsi_sense_data));
|
|
|
|
if (ccb->status_packet.residue_len != 0) {
|
|
xs->flags |= SCSI_RESID_VALID;
|
|
xs->resid = ccb->status_packet.residue_len;
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
#ifdef DPT_LOST_IRQ
|
|
/**
|
|
* This functions handles the calling of the interrupt routine on a periodic
|
|
* basis.
|
|
* It is a completely ugly hack which purpose is to handle the problem of
|
|
* missing interrupts on certain platforms..
|
|
*/
|
|
|
|
static void
|
|
dpt_irq_timeout(void *arg)
|
|
{
|
|
dpt_softc_t *dpt = (dpt_softc_t *) arg;
|
|
int ospl;
|
|
|
|
|
|
if (!(dpt->state & DPT_LOST_IRQ_ACTIVE)) {
|
|
ospl = splcam();
|
|
dpt->state |= DPT_LOST_IRQ_ACTIVE;
|
|
dpt_intr(dpt);
|
|
splx(ospl);
|
|
if (dpt->state & DPT_LOST_IRQ_ACTIVE) {
|
|
printf("dpt %d: %d lost Interrupts Recovered\n",
|
|
dpt->unit, ++dpt->lost_interrupts);
|
|
}
|
|
dpt->state &= ~DPT_LOST_IRQ_ACTIVE;
|
|
}
|
|
timeout(dpt_irq_timeout, (caddr_t) dpt, hz * 1);
|
|
}
|
|
|
|
#endif /* DPT_LOST_IRQ */
|
|
|
|
#ifdef DPT_HANDLE_TIMEOUTS
|
|
/**
|
|
* This function walks down the SUBMITTED queue.
|
|
* Every request that is too old gets aborted and marked.
|
|
* Since the DPT will complete (interrupt) immediately (what does that mean?),
|
|
* We just walk the list, aborting old commands and marking them as such.
|
|
* The dpt_complete function will get rid of the that were interrupted in the
|
|
* normal manner.
|
|
*
|
|
* This function needs to run at splcam(), as it interacts with the submitted
|
|
* queue, as well as the completed and free queues. Just like dpt_intr() does.
|
|
* To run it at any ISPL other than that of dpt_intr(), will mean that dpt_intr
|
|
* willbe able to pre-empt it, grab a transaction in progress (towards
|
|
* destruction) and operate on it. The state of this transaction will be not
|
|
* very clear.
|
|
* The only other option, is to lock it only as long as necessary but have
|
|
* dpt_intr() spin-wait on it. In a UP environment this makes no sense and in
|
|
* a SMP environment, the advantage is dubvious for a function that runs once
|
|
* every ten seconds for few microseconds and, on systems with healthy
|
|
* hardware, does not do anything anyway.
|
|
*/
|
|
|
|
static void
|
|
dpt_handle_timeouts(dpt_softc_t * dpt)
|
|
{
|
|
dpt_ccb_t *ccb;
|
|
int ospl;
|
|
|
|
ospl = splcam();
|
|
|
|
if (dpt->state & DPT_HA_TIMEOUTS_ACTIVE) {
|
|
printf("dpt%d WARNING: Timeout Handling Collision\n",
|
|
dpt->unit);
|
|
splx(ospl);
|
|
return;
|
|
}
|
|
dpt->state |= DPT_HA_TIMEOUTS_ACTIVE;
|
|
|
|
/* Loop through the entire submitted queue, looking for lost souls */
|
|
for (ccb = TAILQ_FIRST(&dpt->submitted_ccbs);
|
|
ccb != NULL;
|
|
ccb = TAILQ_NEXT(ccb, links)) {
|
|
struct scsi_xfer *xs;
|
|
struct timeval now;
|
|
u_int32_t age, max_age;
|
|
|
|
xs = ccb->xs;
|
|
|
|
microtime(&now);
|
|
age = dpt_time_delta(ccb->command_started, now);
|
|
|
|
#define TenSec 10000000
|
|
|
|
if (xs == NULL) { /* Local, non-kernel call */
|
|
max_age = TenSec;
|
|
} else {
|
|
max_age = (((xs->timeout * (dpt->submitted_ccbs_count
|
|
+ DPT_TIMEOUT_FACTOR))
|
|
> TenSec)
|
|
? (xs->timeout * (dpt->submitted_ccbs_count
|
|
+ DPT_TIMEOUT_FACTOR))
|
|
: TenSec);
|
|
}
|
|
|
|
/*
|
|
* If a transaction is marked lost and is TWICE as old as we
|
|
* care, then, and only then do we destroy it!
|
|
*/
|
|
if (ccb->state & DPT_CCB_STATE_MARKED_LOST) {
|
|
/* Remember who is next */
|
|
if (age > (max_age * 2)) {
|
|
dpt_Qremove_submitted(dpt, ccb);
|
|
ccb->state &= ~DPT_CCB_STATE_MARKED_LOST;
|
|
ccb->state |= DPT_CCB_STATE_ABORTED;
|
|
#define cmd_name scsi_cmd_name(ccb->eata_ccb.cp_scsi_cmd)
|
|
if (ccb->retries++ > DPT_RETRIES) {
|
|
printf("dpt%d ERROR: Destroying stale "
|
|
"%d (%s)\n"
|
|
" on "
|
|
"c%db%dt%du%d (%d/%d)\n",
|
|
dpt->unit, ccb->transaction_id,
|
|
cmd_name,
|
|
dpt->unit,
|
|
ccb->eata_ccb.cp_channel,
|
|
ccb->eata_ccb.cp_id,
|
|
ccb->eata_ccb.cp_LUN, age,
|
|
ccb->retries);
|
|
#define send_ccb &ccb->eata_ccb
|
|
#define ESA EATA_SPECIFIC_ABORT
|
|
(void) dpt_send_immediate(dpt,
|
|
send_ccb,
|
|
ESA,
|
|
0, 0);
|
|
dpt_Qpush_free(dpt, ccb);
|
|
|
|
/* The SCSI layer should re-try */
|
|
xs->error |= XS_TIMEOUT;
|
|
xs->flags |= SCSI_ITSDONE;
|
|
scsi_done(xs);
|
|
} else {
|
|
printf("dpt%d ERROR: Stale %d (%s) on "
|
|
"c%db%dt%du%d (%d)\n"
|
|
" gets another "
|
|
"chance(%d/%d)\n",
|
|
dpt->unit, ccb->transaction_id,
|
|
cmd_name,
|
|
dpt->unit,
|
|
ccb->eata_ccb.cp_channel,
|
|
ccb->eata_ccb.cp_id,
|
|
ccb->eata_ccb.cp_LUN,
|
|
age, ccb->retries, DPT_RETRIES);
|
|
|
|
dpt_Qpush_waiting(dpt, ccb);
|
|
dpt_sched_queue(dpt);
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* This is a transaction that is not to be destroyed
|
|
* (yet) But it is too old for our liking. We wait as
|
|
* long as the upper layer thinks. Not really, we
|
|
* multiply that by the number of commands in the
|
|
* submitted queue + 1.
|
|
*/
|
|
if (!(ccb->state & DPT_CCB_STATE_MARKED_LOST) &&
|
|
(age != ~0) && (age > max_age)) {
|
|
printf("dpt%d ERROR: Marking %d (%s) on "
|
|
"c%db%dt%du%d \n"
|
|
" as late after %dusec\n",
|
|
dpt->unit, ccb->transaction_id,
|
|
cmd_name,
|
|
dpt->unit, ccb->eata_ccb.cp_channel,
|
|
ccb->eata_ccb.cp_id,
|
|
ccb->eata_ccb.cp_LUN, age);
|
|
ccb->state |= DPT_CCB_STATE_MARKED_LOST;
|
|
}
|
|
}
|
|
}
|
|
|
|
dpt->state &= ~DPT_HA_TIMEOUTS_ACTIVE;
|
|
splx(ospl);
|
|
}
|
|
|
|
static void
|
|
dpt_timeout(void *arg)
|
|
{
|
|
dpt_softc_t *dpt = (dpt_softc_t *) arg;
|
|
|
|
if (!(dpt->state & DPT_HA_TIMEOUTS_ACTIVE))
|
|
dpt_handle_timeouts(dpt);
|
|
|
|
timeout(dpt_timeout, (caddr_t) dpt, hz * 10);
|
|
}
|
|
|
|
#endif /* DPT_HANDLE_TIMEOUTS */
|
|
|
|
/*
|
|
* Remove a ccb from the completed queue
|
|
*/
|
|
static INLINE_Q void
|
|
dpt_Qremove_completed(dpt_softc_t * dpt, dpt_ccb_t * ccb)
|
|
{
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
u_int32_t complete_time;
|
|
struct timeval now;
|
|
|
|
microtime(&now);
|
|
complete_time = dpt_time_delta(ccb->command_ended, now);
|
|
|
|
if (complete_time != ~0) {
|
|
if (dpt->performance.max_complete_time < complete_time)
|
|
dpt->performance.max_complete_time = complete_time;
|
|
if (complete_time < dpt->performance.min_complete_time)
|
|
dpt->performance.min_complete_time = complete_time;
|
|
}
|
|
#endif
|
|
|
|
TAILQ_REMOVE(&dpt->completed_ccbs, ccb, links);
|
|
--dpt->completed_ccbs_count; /* One less completed ccb in the
|
|
* queue */
|
|
if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE)
|
|
wakeup(&dpt);
|
|
}
|
|
|
|
/**
|
|
* Pop the most recently used ccb off the (HEAD of the) FREE ccb queue
|
|
*/
|
|
static INLINE_Q dpt_ccb_t *
|
|
dpt_Qpop_free(dpt_softc_t * dpt)
|
|
{
|
|
dpt_ccb_t *ccb;
|
|
|
|
if ((ccb = TAILQ_FIRST(&dpt->free_ccbs)) == NULL) {
|
|
if (dpt_alloc_freelist(dpt))
|
|
return (ccb);
|
|
else
|
|
return (dpt_Qpop_free(dpt));
|
|
} else {
|
|
TAILQ_REMOVE(&dpt->free_ccbs, ccb, links);
|
|
--dpt->free_ccbs_count;
|
|
}
|
|
|
|
return (ccb);
|
|
}
|
|
|
|
/**
|
|
* Put a (now freed) ccb back into the HEAD of the FREE ccb queue
|
|
*/
|
|
static INLINE_Q void
|
|
dpt_Qpush_free(dpt_softc_t * dpt, dpt_ccb_t * ccb)
|
|
{
|
|
#ifdef DPT_FREELIST_IS_STACK
|
|
TAILQ_INSERT_HEAD(&dpt->free_ccbs, ccb, links);
|
|
#else
|
|
TAILQ_INSERT_TAIL(&dpt->free_ccbs, ccb, links);
|
|
#endif
|
|
|
|
++dpt->free_ccbs_count;
|
|
}
|
|
|
|
/**
|
|
* Add a request to the TAIL of the WAITING ccb queue
|
|
*/
|
|
static INLINE_Q void
|
|
dpt_Qadd_waiting(dpt_softc_t * dpt, dpt_ccb_t * ccb)
|
|
{
|
|
struct timeval junk;
|
|
|
|
TAILQ_INSERT_TAIL(&dpt->waiting_ccbs, ccb, links);
|
|
++dpt->waiting_ccbs_count;
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
microtime(&junk);
|
|
ccb->command_ended = junk;
|
|
if (dpt->waiting_ccbs_count > dpt->performance.max_waiting_count)
|
|
dpt->performance.max_waiting_count = dpt->waiting_ccbs_count;
|
|
#endif
|
|
|
|
if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE)
|
|
wakeup(&dpt);
|
|
}
|
|
|
|
/**
|
|
* Add a request to the HEAD of the WAITING ccb queue
|
|
*/
|
|
static INLINE_Q void
|
|
dpt_Qpush_waiting(dpt_softc_t * dpt, dpt_ccb_t * ccb)
|
|
{
|
|
struct timeval junk;
|
|
|
|
TAILQ_INSERT_HEAD(&dpt->waiting_ccbs, ccb, links);
|
|
++dpt->waiting_ccbs_count;
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
microtime(&junk);
|
|
ccb->command_ended = junk;
|
|
|
|
if (dpt->performance.max_waiting_count < dpt->waiting_ccbs_count)
|
|
dpt->performance.max_waiting_count = dpt->waiting_ccbs_count;
|
|
|
|
#endif
|
|
|
|
if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE)
|
|
wakeup(&dpt);
|
|
}
|
|
|
|
/**
|
|
* Remove a ccb from the waiting queue
|
|
*/
|
|
static INLINE_Q void
|
|
dpt_Qremove_waiting(dpt_softc_t * dpt, dpt_ccb_t * ccb)
|
|
{
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
struct timeval now;
|
|
u_int32_t waiting_time;
|
|
|
|
microtime(&now);
|
|
waiting_time = dpt_time_delta(ccb->command_ended, now);
|
|
|
|
if (waiting_time != ~0) {
|
|
if (dpt->performance.max_waiting_time < waiting_time)
|
|
dpt->performance.max_waiting_time = waiting_time;
|
|
if (waiting_time < dpt->performance.min_waiting_time)
|
|
dpt->performance.min_waiting_time = waiting_time;
|
|
}
|
|
#endif
|
|
|
|
TAILQ_REMOVE(&dpt->waiting_ccbs, ccb, links);
|
|
--dpt->waiting_ccbs_count; /* One less waiting ccb in the queue */
|
|
|
|
if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE)
|
|
wakeup(&dpt);
|
|
}
|
|
|
|
/**
|
|
* Add a request to the TAIL of the SUBMITTED ccb queue
|
|
*/
|
|
static INLINE_Q void
|
|
dpt_Qadd_submitted(dpt_softc_t * dpt, dpt_ccb_t * ccb)
|
|
{
|
|
struct timeval junk;
|
|
|
|
TAILQ_INSERT_TAIL(&dpt->submitted_ccbs, ccb, links);
|
|
++dpt->submitted_ccbs_count;
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
microtime(&junk);
|
|
ccb->command_ended = junk;
|
|
if (dpt->performance.max_submit_count < dpt->submitted_ccbs_count)
|
|
dpt->performance.max_submit_count = dpt->submitted_ccbs_count;
|
|
#endif
|
|
|
|
if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE)
|
|
wakeup(&dpt);
|
|
}
|
|
|
|
/**
|
|
* Add a request to the TAIL of the Completed ccb queue
|
|
*/
|
|
static INLINE_Q void
|
|
dpt_Qadd_completed(dpt_softc_t * dpt, dpt_ccb_t * ccb)
|
|
{
|
|
struct timeval junk;
|
|
|
|
TAILQ_INSERT_TAIL(&dpt->completed_ccbs, ccb, links);
|
|
++dpt->completed_ccbs_count;
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
microtime(&junk);
|
|
ccb->command_ended = junk;
|
|
if (dpt->performance.max_complete_count < dpt->completed_ccbs_count)
|
|
dpt->performance.max_complete_count =
|
|
dpt->completed_ccbs_count;
|
|
#endif
|
|
|
|
if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE)
|
|
wakeup(&dpt);
|
|
}
|
|
|
|
/**
|
|
* Remove a ccb from the submitted queue
|
|
*/
|
|
static INLINE_Q void
|
|
dpt_Qremove_submitted(dpt_softc_t * dpt, dpt_ccb_t * ccb)
|
|
{
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
struct timeval now;
|
|
u_int32_t submit_time;
|
|
|
|
microtime(&now);
|
|
submit_time = dpt_time_delta(ccb->command_ended, now);
|
|
|
|
if (submit_time != ~0) {
|
|
ccb->submitted_time = submit_time;
|
|
if (dpt->performance.max_submit_time < submit_time)
|
|
dpt->performance.max_submit_time = submit_time;
|
|
if (submit_time < dpt->performance.min_submit_time)
|
|
dpt->performance.min_submit_time = submit_time;
|
|
} else {
|
|
ccb->submitted_time = 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
TAILQ_REMOVE(&dpt->submitted_ccbs, ccb, links);
|
|
--dpt->submitted_ccbs_count; /* One less submitted ccb in the
|
|
* queue */
|
|
|
|
if ((dpt->state & DPT_HA_SHUTDOWN_ACTIVE)
|
|
|| (dpt->state & DPT_HA_QUIET))
|
|
wakeup(&dpt);
|
|
}
|
|
|
|
/**
|
|
* Handle Shutdowns.
|
|
* Gets registered by the dpt_pci.c registar and called AFTER the system did
|
|
* all its sync work.
|
|
*/
|
|
|
|
void
|
|
dpt_shutdown(int howto, void *arg_dpt)
|
|
{
|
|
dpt_softc_t *ldpt;
|
|
u_int8_t channel;
|
|
u_int32_t target;
|
|
u_int32_t lun;
|
|
int waiting;
|
|
int submitted;
|
|
int completed;
|
|
int huh;
|
|
int wait_is_over;
|
|
int ospl;
|
|
dpt_softc_t *dpt;
|
|
|
|
dpt = (dpt_softc_t *) arg_dpt;
|
|
|
|
printf("dpt%d: Shutting down (mode %d) HBA. Please wait...",
|
|
dpt->unit, howto);
|
|
wait_is_over = 0;
|
|
|
|
ospl = splcam();
|
|
dpt->state |= DPT_HA_SHUTDOWN_ACTIVE;
|
|
splx(ospl);
|
|
|
|
while ((((waiting = dpt->waiting_ccbs_count) != 0)
|
|
|| ((submitted = dpt->submitted_ccbs_count) != 0)
|
|
|| ((completed = dpt->completed_ccbs_count) != 0))
|
|
&& (wait_is_over == 0)) {
|
|
#ifdef DPT_DEBUG_SHUTDOWN
|
|
printf("dpt%d: Waiting for queues w%ds%dc%d to deplete\n",
|
|
dpt->unit, dpt->waiting_ccbs_count,
|
|
dpt->submitted_ccbs_count,
|
|
dpt->completed_ccbs_count);
|
|
#endif
|
|
huh = tsleep((void *) dpt, PCATCH | PRIBIO, "dptoff", 100 * hz);
|
|
switch (huh) {
|
|
case 0:
|
|
/* Wakeup call received */
|
|
goto checkit;
|
|
break;
|
|
case EWOULDBLOCK:
|
|
/* Timer Expired */
|
|
printf("dpt%d: Shutdown timer expired with queues at "
|
|
"w%ds%dc%d\n",
|
|
dpt->unit, dpt->waiting_ccbs_count,
|
|
dpt->submitted_ccbs_count,
|
|
dpt->completed_ccbs_count);
|
|
++wait_is_over;
|
|
break;
|
|
default:
|
|
/* anything else */
|
|
printf("dpt%d: Shutdown UNKNOWN with qeueues at "
|
|
"w%ds%dc%d\n",
|
|
dpt->unit, dpt->waiting_ccbs_count,
|
|
dpt->submitted_ccbs_count,
|
|
dpt->completed_ccbs_count);
|
|
++wait_is_over;
|
|
break;
|
|
}
|
|
checkit:
|
|
|
|
}
|
|
|
|
/**
|
|
* What we do for a shutdown, is give the DPT early power loss
|
|
* warning
|
|
. */
|
|
(void) dpt_send_immediate(dpt, NULL, EATA_POWER_OFF_WARN, 0, 0);
|
|
printf("dpt%d: Controller was warned of shutdown and is now "
|
|
"disabled\n",
|
|
dpt->unit);
|
|
|
|
return;
|
|
}
|
|
|
|
/* A primitive subset of isgraph. Used by hex_dump below */
|
|
#define IsGraph(val) ((((val) >= ' ') && ((val) <= '~')))
|
|
|
|
/**
|
|
* This function dumps bytes to the screen in hex format.
|
|
*/
|
|
static void
|
|
hex_dump(u_int8_t * data, int length, char *name, int no)
|
|
{
|
|
int line, column, ndx;
|
|
|
|
printf("Kernel Hex Dump for %s-%d at %p (%d bytes)\n",
|
|
name, no, data, length);
|
|
|
|
/* Zero out all the counters and repeat for as many bytes as we have */
|
|
for (ndx = 0, column = 0, line = 0; ndx < length; ndx++) {
|
|
/* Print relative offset at the beginning of every line */
|
|
if (column == 0)
|
|
printf("%04x ", ndx);
|
|
|
|
/* Print the byte as two hex digits, followed by a space */
|
|
printf("%02x ", data[ndx]);
|
|
|
|
/* Split the row of 16 bytes in half */
|
|
if (++column == 8) {
|
|
printf(" ");
|
|
}
|
|
/* St the end of each row of 16 bytes, put a space ... */
|
|
if (column == 16) {
|
|
printf(" ");
|
|
|
|
/* ... and then print the ASCII-visible on a line. */
|
|
for (column = 0; column < 16; column++) {
|
|
int ascii_pos = ndx - 15 + column;
|
|
|
|
/**
|
|
* Non-printable and non-ASCII are just a
|
|
* dot. ;-(
|
|
*/
|
|
if (IsGraph(data[ascii_pos]))
|
|
printf("%c", data[ascii_pos]);
|
|
else
|
|
printf(".");
|
|
}
|
|
|
|
/* Each line ends with a new line */
|
|
printf("\n");
|
|
column = 0;
|
|
|
|
/**
|
|
* Every 256 bytes (16 lines of 16 bytes each) have
|
|
* an empty line, separating them from the next
|
|
* ``page''. Yes, I programmed on a Z-80, where a
|
|
* page was 256 bytes :-)
|
|
*/
|
|
if (++line > 15) {
|
|
printf("\n");
|
|
line = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* We are basically done. We do want, however, to handle the ASCII
|
|
* translation of fractional lines.
|
|
*/
|
|
if ((ndx == length) && (column != 0)) {
|
|
int modulus = 16 - column, spaces = modulus * 3,
|
|
skip;
|
|
|
|
/**
|
|
* Skip to the right, as many spaces as there are bytes
|
|
* ``missing'' ...
|
|
*/
|
|
for (skip = 0; skip < spaces; skip++)
|
|
printf(" ");
|
|
|
|
/* ... And the gap separating the hex dump from the ASCII */
|
|
printf(" ");
|
|
|
|
/**
|
|
* Do not forget the extra space that splits the hex dump
|
|
* vertically
|
|
*/
|
|
if (column < 8)
|
|
printf(" ");
|
|
|
|
for (column = 0; column < (16 - modulus); column++) {
|
|
int ascii_pos = ndx - (16 - modulus) + column;
|
|
|
|
if (IsGraph(data[ascii_pos]))
|
|
printf("%c", data[ascii_pos]);
|
|
else
|
|
printf(".");
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* and this one presents an integer as ones and zeros
|
|
*/
|
|
static char i2bin_bitmap[48]; /* Used for binary dump of registers */
|
|
|
|
char *
|
|
i2bin(unsigned int no, int length)
|
|
{
|
|
int ndx, rind;
|
|
|
|
for (ndx = 0, rind = 0; ndx < 32; ndx++, rind++) {
|
|
i2bin_bitmap[rind] = (((no << ndx) & 0x80000000) ? '1' : '0');
|
|
|
|
if (((ndx % 4) == 3))
|
|
i2bin_bitmap[++rind] = ' ';
|
|
}
|
|
|
|
if ((ndx % 4) == 3)
|
|
i2bin_bitmap[rind - 1] = '\0';
|
|
else
|
|
i2bin_bitmap[rind] = '\0';
|
|
|
|
switch (length) {
|
|
case 8:
|
|
return (i2bin_bitmap + 30);
|
|
break;
|
|
case 16:
|
|
return (i2bin_bitmap + 20);
|
|
break;
|
|
case 24:
|
|
return (i2bin_bitmap + 10);
|
|
break;
|
|
case 32:
|
|
return (i2bin_bitmap);
|
|
default:
|
|
return ("i2bin: Invalid length Specs");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This function translates a SCSI command numeric code to a human readable
|
|
* string.
|
|
* The string contains the class of devices, scope, description, (length),
|
|
* and [SCSI III documentation section].
|
|
*/
|
|
|
|
static char *
|
|
scsi_cmd_name(u_int8_t cmd)
|
|
{
|
|
switch (cmd) {
|
|
case 0x40:
|
|
return ("Change Definition [7.1]");
|
|
break;
|
|
case 0x39:
|
|
return ("Compare [7,2]");
|
|
break;
|
|
case 0x18:
|
|
return ("Copy [7.3]");
|
|
break;
|
|
case 0x3a:
|
|
return ("Copy and Verify [7.4]");
|
|
break;
|
|
case 0x04:
|
|
return ("Format Unit [6.1.1]");
|
|
break;
|
|
case 0x12:
|
|
return ("Inquiry [7.5]");
|
|
break;
|
|
case 0x36:
|
|
return ("lock/Unlock Cache [6.1.2]");
|
|
break;
|
|
case 0x4c:
|
|
return ("Log Select [7.6]");
|
|
break;
|
|
case 0x4d:
|
|
return ("Log Sense [7.7]");
|
|
break;
|
|
case 0x15:
|
|
return ("Mode select (6) [7.8]");
|
|
break;
|
|
case 0x55:
|
|
return ("Mode Select (10) [7.9]");
|
|
break;
|
|
case 0x1a:
|
|
return ("Mode Sense (6) [7.10]");
|
|
break;
|
|
case 0x5a:
|
|
return ("Mode Sense (10) [7.11]");
|
|
break;
|
|
case 0xa7:
|
|
return ("Move Medium Attached [SMC]");
|
|
break;
|
|
case 0x5e:
|
|
return ("Persistent Reserve In [7.12]");
|
|
break;
|
|
case 0x5f:
|
|
return ("Persistent Reserve Out [7.13]");
|
|
break;
|
|
case 0x1e:
|
|
return ("Prevent/Allow Medium Removal [7.14]");
|
|
break;
|
|
case 0x08:
|
|
return ("Read, Receive (6) [6.1.5]");
|
|
break;
|
|
case 0x28:
|
|
return ("Read (10) [6.1.5]");
|
|
break;
|
|
case 0xa8:
|
|
return ("Read (12) [6.1.5]");
|
|
break;
|
|
case 0x3c:
|
|
return ("Read Buffer [7.15]");
|
|
break;
|
|
case 0x25:
|
|
return ("Read Capacity [6.1.6]");
|
|
break;
|
|
case 0x37:
|
|
return ("Read Defect Data (10) [6.1.7]");
|
|
break;
|
|
case 0xb7:
|
|
return ("Read Defect Data (12) [6.2.5]");
|
|
break;
|
|
case 0xb4:
|
|
return ("Read Element Status Attached [SMC]");
|
|
break;
|
|
case 0x3e:
|
|
return ("Read Long [6.1.8]");
|
|
break;
|
|
case 0x07:
|
|
return ("Reassign Blocks [6.1.9]");
|
|
break;
|
|
case 0x81:
|
|
return ("Rebuild [6.1.10]");
|
|
break;
|
|
case 0x1c:
|
|
return ("Receive Diagnostics Result [7.16]");
|
|
break;
|
|
case 0x82:
|
|
return ("Regenerate [6.1.11]");
|
|
break;
|
|
case 0x17:
|
|
return ("Release(6) [7.17]");
|
|
break;
|
|
case 0x57:
|
|
return ("Release(10) [7.18]");
|
|
break;
|
|
case 0xa0:
|
|
return ("Report LUNs [7.19]");
|
|
break;
|
|
case 0x03:
|
|
return ("Request Sense [7.20]");
|
|
break;
|
|
case 0x16:
|
|
return ("Resereve (6) [7.21]");
|
|
break;
|
|
case 0x56:
|
|
return ("Reserve(10) [7.22]");
|
|
break;
|
|
case 0x2b:
|
|
return ("Reserve(10) [6.1.12]");
|
|
break;
|
|
case 0x1d:
|
|
return ("Send Disagnostics [7.23]");
|
|
break;
|
|
case 0x33:
|
|
return ("Set Limit (10) [6.1.13]");
|
|
break;
|
|
case 0xb3:
|
|
return ("Set Limit (12) [6.2.8]");
|
|
break;
|
|
case 0x1b:
|
|
return ("Start/Stop Unit [6.1.14]");
|
|
break;
|
|
case 0x35:
|
|
return ("Synchronize Cache [6.1.15]");
|
|
break;
|
|
case 0x00:
|
|
return ("Test Unit Ready [7.24]");
|
|
break;
|
|
case 0x3d:
|
|
return ("Update Block (6.2.9");
|
|
break;
|
|
case 0x2f:
|
|
return ("Verify (10) [6.1.16, 6.2.10]");
|
|
break;
|
|
case 0xaf:
|
|
return ("Verify (12) [6.2.11]");
|
|
break;
|
|
case 0x0a:
|
|
return ("Write, Send (6) [6.1.17, 9.2]");
|
|
break;
|
|
case 0x2a:
|
|
return ("Write (10) [6.1.18]");
|
|
break;
|
|
case 0xaa:
|
|
return ("Write (12) [6.2.13]");
|
|
break;
|
|
case 0x2e:
|
|
return ("Write and Verify (10) [6.1.19, 6.2.14]");
|
|
break;
|
|
case 0xae:
|
|
return ("Write and Verify (12) [6.1.19, 6.2.15]");
|
|
break;
|
|
case 0x03b:
|
|
return ("Write Buffer [7.25]");
|
|
break;
|
|
case 0x03f:
|
|
return ("Write Long [6.1.20]");
|
|
break;
|
|
case 0x041:
|
|
return ("Write Same [6.1.21]");
|
|
break;
|
|
case 0x052:
|
|
return ("XD Read [6.1.22]");
|
|
break;
|
|
case 0x050:
|
|
return ("XD Write [6.1.22]");
|
|
break;
|
|
case 0x080:
|
|
return ("XD Write Extended [6.1.22]");
|
|
break;
|
|
case 0x051:
|
|
return ("XO Write [6.1.22]");
|
|
break;
|
|
default:
|
|
return ("Unknown SCSI Command");
|
|
}
|
|
}
|
|
|
|
/* End of the DPT driver */
|
|
|
|
/**
|
|
* Hello emacs, these are the
|
|
* Local Variables:
|
|
* c-indent-level: 8
|
|
* c-continued-statement-offset: 8
|
|
* c-continued-brace-offset: 0
|
|
* c-brace-offset: -8
|
|
* c-brace-imaginary-offset: 0
|
|
* c-argdecl-indent: 8
|
|
* c-label-offset: -8
|
|
* c++-hanging-braces: 1
|
|
* c++-access-specifier-offset: -8
|
|
* c++-empty-arglist-indent: 8
|
|
* c++-friend-offset: 0
|
|
* End:
|
|
*/
|