086646f7c6
don't care about the alignment, set it to 1, meaning single byte alignment.
2527 lines
66 KiB
C
2527 lines
66 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 ISA probe code.
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* * Add driver-level RAID-0. This will allow interoperability with
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* NiceTry, M$-Doze, Win-Dog, Slowlaris, etc., in recognizing RAID
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* arrays that span controllers (Wow!).
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*/
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#ident "$Id: dpt_scsi.c,v 1.23 1999/05/06 20:16:22 ken 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 <stddef.h> /* For offsetof */
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#include <machine/bus_memio.h>
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#include <machine/bus_pio.h>
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#include <machine/bus.h>
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#include <machine/clock.h>
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/cam_sim.h>
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#include <cam/cam_xpt_sim.h>
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#include <cam/cam_debug.h>
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#include <cam/scsi/scsi_all.h>
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#include <cam/scsi/scsi_message.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <dev/dpt/dpt.h>
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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;
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u_long dpt_unit; /* Next unit number to use */
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/* The linked list of softc structures */
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struct dpt_softc_list dpt_softcs = TAILQ_HEAD_INITIALIZER(dpt_softcs);
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#define microtime_now dpt_time_now()
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#define dpt_inl(dpt, port) \
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bus_space_read_4((dpt)->tag, (dpt)->bsh, port)
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#define dpt_inb(dpt, port) \
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bus_space_read_1((dpt)->tag, (dpt)->bsh, port)
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#define dpt_outl(dpt, port, value) \
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bus_space_write_4((dpt)->tag, (dpt)->bsh, port, value)
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#define dpt_outb(dpt, port, value) \
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bus_space_write_1((dpt)->tag, (dpt)->bsh, port, value)
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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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/* Definitions for our use of the SIM private CCB area */
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#define ccb_dccb_ptr spriv_ptr0
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#define ccb_dpt_ptr spriv_ptr1
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/* ================= Private Inline Function declarations ===================*/
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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 int dpt_wait(dpt_softc_t *dpt, u_int bits,
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u_int state);
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static __inline struct dpt_ccb* dptgetccb(struct dpt_softc *dpt);
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static __inline void dptfreeccb(struct dpt_softc *dpt,
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struct dpt_ccb *dccb);
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static __inline u_int32_t dptccbvtop(struct dpt_softc *dpt,
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struct dpt_ccb *dccb);
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static __inline int dpt_send_immediate(dpt_softc_t *dpt,
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eata_ccb_t *cmd_block,
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u_int32_t cmd_busaddr,
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u_int retries,
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u_int ifc, u_int code,
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u_int code2);
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/* ==================== Private Function declarations =======================*/
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static void dptmapmem(void *arg, bus_dma_segment_t *segs,
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int nseg, int error);
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static struct sg_map_node*
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dptallocsgmap(struct dpt_softc *dpt);
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static int dptallocccbs(dpt_softc_t *dpt);
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static int dpt_get_conf(dpt_softc_t *dpt, dpt_ccb_t *dccb,
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u_int32_t dccb_busaddr, u_int size,
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u_int page, u_int target, int extent);
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static void dpt_detect_cache(dpt_softc_t *dpt, dpt_ccb_t *dccb,
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u_int32_t dccb_busaddr,
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u_int8_t *buff);
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static void dpt_poll(struct cam_sim *sim);
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static void dptexecuteccb(void *arg, bus_dma_segment_t *dm_segs,
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int nseg, int error);
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static void dpt_action(struct cam_sim *sim, union ccb *ccb);
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static int dpt_send_eata_command(dpt_softc_t *dpt, eata_ccb_t *cmd,
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u_int32_t cmd_busaddr,
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u_int command, u_int retries,
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u_int ifc, u_int code,
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u_int code2);
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static void dptprocesserror(dpt_softc_t *dpt, dpt_ccb_t *dccb,
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union ccb *ccb, u_int hba_stat,
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u_int scsi_stat, u_int32_t resid);
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static void dpttimeout(void *arg);
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static void dptshutdown(int howto, void *arg);
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/* ================= Private Inline Function definitions ====================*/
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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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static __inline int
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dpt_wait(dpt_softc_t *dpt, u_int bits, u_int state)
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{
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int i;
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u_int 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 struct dpt_ccb*
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dptgetccb(struct dpt_softc *dpt)
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{
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struct dpt_ccb* dccb;
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int s;
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s = splcam();
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if ((dccb = SLIST_FIRST(&dpt->free_dccb_list)) != NULL) {
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SLIST_REMOVE_HEAD(&dpt->free_dccb_list, links);
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dpt->free_dccbs--;
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} else if (dpt->total_dccbs < dpt->max_dccbs) {
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dptallocccbs(dpt);
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dccb = SLIST_FIRST(&dpt->free_dccb_list);
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if (dccb == NULL)
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printf("dpt%d: Can't malloc DCCB\n", dpt->unit);
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else {
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SLIST_REMOVE_HEAD(&dpt->free_dccb_list, links);
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dpt->free_dccbs--;
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}
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}
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splx(s);
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return (dccb);
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}
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static __inline void
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dptfreeccb(struct dpt_softc *dpt, struct dpt_ccb *dccb)
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{
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int s;
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s = splcam();
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if ((dccb->state & DCCB_ACTIVE) != 0)
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LIST_REMOVE(&dccb->ccb->ccb_h, sim_links.le);
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if ((dccb->state & DCCB_RELEASE_SIMQ) != 0)
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dccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
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else if (dpt->resource_shortage != 0
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&& (dccb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
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dccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
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dpt->resource_shortage = FALSE;
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}
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dccb->state = DCCB_FREE;
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SLIST_INSERT_HEAD(&dpt->free_dccb_list, dccb, links);
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++dpt->free_dccbs;
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splx(s);
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}
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static __inline u_int32_t
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dptccbvtop(struct dpt_softc *dpt, struct dpt_ccb *dccb)
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{
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return (dpt->dpt_ccb_busbase
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+ (u_int32_t)((caddr_t)dccb - (caddr_t)dpt->dpt_dccbs));
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}
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static __inline struct dpt_ccb *
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dptccbptov(struct dpt_softc *dpt, u_int32_t busaddr)
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{
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return (dpt->dpt_dccbs
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+ ((struct dpt_ccb *)busaddr
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- (struct dpt_ccb *)dpt->dpt_ccb_busbase));
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}
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/*
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* Send a command for immediate execution by the DPT
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* See above function for IMPORTANT notes.
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*/
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static __inline int
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dpt_send_immediate(dpt_softc_t *dpt, eata_ccb_t *cmd_block,
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u_int32_t cmd_busaddr, u_int retries,
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u_int ifc, u_int code, u_int code2)
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{
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return (dpt_send_eata_command(dpt, cmd_block, cmd_busaddr,
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EATA_CMD_IMMEDIATE, retries, ifc,
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code, code2));
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}
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/* ===================== Private Function definitions =======================*/
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static void
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dptmapmem(void *arg, bus_dma_segment_t *segs, int nseg, int error)
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{
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bus_addr_t *busaddrp;
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busaddrp = (bus_addr_t *)arg;
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*busaddrp = segs->ds_addr;
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}
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static struct sg_map_node *
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dptallocsgmap(struct dpt_softc *dpt)
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{
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struct sg_map_node *sg_map;
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sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT);
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if (sg_map == NULL)
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return (NULL);
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/* Allocate S/G space for the next batch of CCBS */
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if (bus_dmamem_alloc(dpt->sg_dmat, (void **)&sg_map->sg_vaddr,
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BUS_DMA_NOWAIT, &sg_map->sg_dmamap) != 0) {
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free(sg_map, M_DEVBUF);
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return (NULL);
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}
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(void)bus_dmamap_load(dpt->sg_dmat, sg_map->sg_dmamap, sg_map->sg_vaddr,
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PAGE_SIZE, dptmapmem, &sg_map->sg_physaddr,
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/*flags*/0);
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SLIST_INSERT_HEAD(&dpt->sg_maps, sg_map, links);
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return (sg_map);
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}
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/*
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* Allocate another chunk of CCB's. Return count of entries added.
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* Assumed to be called at splcam().
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*/
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static int
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dptallocccbs(dpt_softc_t *dpt)
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{
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struct dpt_ccb *next_ccb;
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struct sg_map_node *sg_map;
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bus_addr_t physaddr;
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dpt_sg_t *segs;
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int newcount;
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int i;
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next_ccb = &dpt->dpt_dccbs[dpt->total_dccbs];
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if (next_ccb == dpt->dpt_dccbs) {
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/*
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* First time through. Re-use the S/G
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* space we allocated for initialization
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* CCBS.
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*/
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sg_map = SLIST_FIRST(&dpt->sg_maps);
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} else {
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sg_map = dptallocsgmap(dpt);
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}
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if (sg_map == NULL)
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return (0);
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segs = sg_map->sg_vaddr;
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physaddr = sg_map->sg_physaddr;
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newcount = (PAGE_SIZE / (dpt->sgsize * sizeof(dpt_sg_t)));
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for (i = 0; dpt->total_dccbs < dpt->max_dccbs && i < newcount; i++) {
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int error;
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error = bus_dmamap_create(dpt->buffer_dmat, /*flags*/0,
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&next_ccb->dmamap);
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if (error != 0)
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break;
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next_ccb->sg_list = segs;
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next_ccb->sg_busaddr = htonl(physaddr);
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next_ccb->eata_ccb.cp_dataDMA = htonl(physaddr);
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next_ccb->eata_ccb.cp_statDMA = htonl(dpt->sp_physaddr);
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next_ccb->eata_ccb.cp_reqDMA =
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htonl(dptccbvtop(dpt, next_ccb)
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+ offsetof(struct dpt_ccb, sense_data));
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next_ccb->eata_ccb.cp_busaddr = dpt->dpt_ccb_busend;
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next_ccb->state = DCCB_FREE;
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next_ccb->tag = dpt->total_dccbs;
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SLIST_INSERT_HEAD(&dpt->free_dccb_list, next_ccb, links);
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segs += dpt->sgsize;
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physaddr += (dpt->sgsize * sizeof(dpt_sg_t));
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dpt->dpt_ccb_busend += sizeof(*next_ccb);
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next_ccb++;
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dpt->total_dccbs++;
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}
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return (i);
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}
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|
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/*
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* Read a configuration page into the supplied dpt_cont_t buffer.
|
|
*/
|
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static int
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dpt_get_conf(dpt_softc_t *dpt, dpt_ccb_t *dccb, u_int32_t dccb_busaddr,
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u_int size, u_int page, u_int target, int extent)
|
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{
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eata_ccb_t *cp;
|
|
|
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u_int8_t status;
|
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|
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int ndx;
|
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int ospl;
|
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int result;
|
|
|
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cp = &dccb->eata_ccb;
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bzero((void *)dpt->sp, sizeof(*dpt->sp));
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|
|
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cp->Interpret = 1;
|
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cp->DataIn = 1;
|
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cp->Auto_Req_Sen = 1;
|
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cp->reqlen = sizeof(struct scsi_sense_data);
|
|
|
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cp->cp_id = target;
|
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cp->cp_LUN = 0; /* In the EATA packet */
|
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cp->cp_lun = 0; /* In the SCSI command */
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|
|
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cp->cp_scsi_cmd = INQUIRY;
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cp->cp_len = size;
|
|
|
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cp->cp_extent = extent;
|
|
|
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cp->cp_page = page;
|
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cp->cp_channel = 0; /* DNC, Interpret mode is set */
|
|
cp->cp_identify = 1;
|
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cp->cp_datalen = htonl(size);
|
|
|
|
ospl = splcam();
|
|
|
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/*
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|
* 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))
|
|
&& (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.\n",
|
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dpt->unit);
|
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splx(ospl);
|
|
return (0);
|
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}
|
|
}
|
|
|
|
DptStat_Reset_BUSY(dpt->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, dccb_busaddr,
|
|
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);
|
|
splx(ospl);
|
|
return (0);
|
|
}
|
|
/* 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)
|
|
&& (dpt->sp->hba_stat == 0)
|
|
&& (dpt->sp->scsi_stat == 0)
|
|
&& (dpt->sp->residue_len == 0))
|
|
return (0);
|
|
return (1);
|
|
}
|
|
|
|
/* Detect Cache parameters and size */
|
|
static void
|
|
dpt_detect_cache(dpt_softc_t *dpt, dpt_ccb_t *dccb, u_int32_t dccb_busaddr,
|
|
u_int8_t *buff)
|
|
{
|
|
eata_ccb_t *cp;
|
|
u_int8_t *param;
|
|
int bytes;
|
|
int result;
|
|
int ospl;
|
|
int ndx;
|
|
u_int8_t status;
|
|
|
|
/*
|
|
* Default setting, for best perfromance..
|
|
* This is what virtually all cards default to..
|
|
*/
|
|
dpt->cache_type = DPT_CACHE_WRITEBACK;
|
|
dpt->cache_size = 0;
|
|
|
|
cp = &dccb->eata_ccb;
|
|
bzero((void *)dpt->sp, sizeof(dpt->sp));
|
|
bzero(buff, 512);
|
|
|
|
/* Setup the command structure */
|
|
cp->Interpret = 1;
|
|
cp->DataIn = 1;
|
|
cp->Auto_Req_Sen = 1;
|
|
cp->reqlen = 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_extent = 0;
|
|
cp->cp_page = 0;
|
|
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, dccb_busaddr,
|
|
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);
|
|
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;
|
|
}
|
|
|
|
/* XXX This isn't correct. This log parameter only has two bytes.... */
|
|
#if 0
|
|
dpt->cache_size = param[5]
|
|
| (param[6] << 8)
|
|
| (param[7] << 16)
|
|
| (param[8] << 24);
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
dpt_poll(struct cam_sim *sim)
|
|
{
|
|
dpt_intr(cam_sim_softc(sim));
|
|
}
|
|
|
|
static void
|
|
dptexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
|
|
{
|
|
struct dpt_ccb *dccb;
|
|
union ccb *ccb;
|
|
struct dpt_softc *dpt;
|
|
int s;
|
|
|
|
dccb = (struct dpt_ccb *)arg;
|
|
ccb = dccb->ccb;
|
|
dpt = (struct dpt_softc *)ccb->ccb_h.ccb_dpt_ptr;
|
|
|
|
if (error != 0) {
|
|
if (error != EFBIG)
|
|
printf("dpt%d: Unexepected error 0x%x returned from "
|
|
"bus_dmamap_load\n", dpt->unit, error);
|
|
if (ccb->ccb_h.status == CAM_REQ_INPROG) {
|
|
xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
|
|
ccb->ccb_h.status = CAM_REQ_TOO_BIG|CAM_DEV_QFRZN;
|
|
}
|
|
dptfreeccb(dpt, dccb);
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
|
|
if (nseg != 0) {
|
|
dpt_sg_t *sg;
|
|
bus_dma_segment_t *end_seg;
|
|
bus_dmasync_op_t op;
|
|
|
|
end_seg = dm_segs + nseg;
|
|
|
|
/* Copy the segments into our SG list */
|
|
sg = dccb->sg_list;
|
|
while (dm_segs < end_seg) {
|
|
sg->seg_len = htonl(dm_segs->ds_len);
|
|
sg->seg_addr = htonl(dm_segs->ds_addr);
|
|
sg++;
|
|
dm_segs++;
|
|
}
|
|
|
|
if (nseg > 1) {
|
|
dccb->eata_ccb.scatter = 1;
|
|
dccb->eata_ccb.cp_dataDMA = dccb->sg_busaddr;
|
|
dccb->eata_ccb.cp_datalen =
|
|
htonl(nseg * sizeof(dpt_sg_t));
|
|
} else {
|
|
dccb->eata_ccb.cp_dataDMA = dccb->sg_list[0].seg_addr;
|
|
dccb->eata_ccb.cp_datalen = dccb->sg_list[0].seg_len;
|
|
}
|
|
|
|
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
|
|
op = BUS_DMASYNC_PREREAD;
|
|
else
|
|
op = BUS_DMASYNC_PREWRITE;
|
|
|
|
bus_dmamap_sync(dpt->buffer_dmat, dccb->dmamap, op);
|
|
|
|
} else {
|
|
dccb->eata_ccb.cp_dataDMA = 0;
|
|
dccb->eata_ccb.cp_datalen = 0;
|
|
}
|
|
|
|
s = splcam();
|
|
|
|
/*
|
|
* Last time we need to check if this CCB needs to
|
|
* be aborted.
|
|
*/
|
|
if (ccb->ccb_h.status != CAM_REQ_INPROG) {
|
|
if (nseg != 0)
|
|
bus_dmamap_unload(dpt->buffer_dmat, dccb->dmamap);
|
|
dptfreeccb(dpt, dccb);
|
|
xpt_done(ccb);
|
|
splx(s);
|
|
return;
|
|
}
|
|
|
|
dccb->state |= DCCB_ACTIVE;
|
|
ccb->ccb_h.status |= CAM_SIM_QUEUED;
|
|
LIST_INSERT_HEAD(&dpt->pending_ccb_list, &ccb->ccb_h, sim_links.le);
|
|
ccb->ccb_h.timeout_ch =
|
|
timeout(dpttimeout, (caddr_t)dccb,
|
|
(ccb->ccb_h.timeout * hz) / 1000);
|
|
if (dpt_send_eata_command(dpt, &dccb->eata_ccb,
|
|
dccb->eata_ccb.cp_busaddr,
|
|
EATA_CMD_DMA_SEND_CP, 0, 0, 0, 0) != 0) {
|
|
ccb->ccb_h.status = CAM_NO_HBA; /* HBA dead or just busy?? */
|
|
if (nseg != 0)
|
|
bus_dmamap_unload(dpt->buffer_dmat, dccb->dmamap);
|
|
dptfreeccb(dpt, dccb);
|
|
xpt_done(ccb);
|
|
}
|
|
|
|
splx(s);
|
|
}
|
|
|
|
static void
|
|
dpt_action(struct cam_sim *sim, union ccb *ccb)
|
|
{
|
|
struct dpt_softc *dpt;
|
|
|
|
CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("dpt_action\n"));
|
|
|
|
dpt = (struct dpt_softc *)cam_sim_softc(sim);
|
|
|
|
if ((dpt->state & DPT_HA_SHUTDOWN_ACTIVE) != 0) {
|
|
xpt_print_path(ccb->ccb_h.path);
|
|
printf("controller is shutdown. Aborting CCB.\n");
|
|
ccb->ccb_h.status = CAM_NO_HBA;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
|
|
switch (ccb->ccb_h.func_code) {
|
|
/* Common cases first */
|
|
case XPT_SCSI_IO: /* Execute the requested I/O operation */
|
|
{
|
|
struct ccb_scsiio *csio;
|
|
struct ccb_hdr *ccbh;
|
|
struct dpt_ccb *dccb;
|
|
struct eata_ccb *eccb;
|
|
|
|
csio = &ccb->csio;
|
|
ccbh = &ccb->ccb_h;
|
|
/* Max CDB length is 12 bytes */
|
|
if (csio->cdb_len > 12) {
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
if ((dccb = dptgetccb(dpt)) == NULL) {
|
|
int s;
|
|
|
|
s = splcam();
|
|
dpt->resource_shortage = 1;
|
|
splx(s);
|
|
xpt_freeze_simq(sim, /*count*/1);
|
|
ccb->ccb_h.status = CAM_REQUEUE_REQ;
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
eccb = &dccb->eata_ccb;
|
|
|
|
/* Link dccb and ccb so we can find one from the other */
|
|
dccb->ccb = ccb;
|
|
ccb->ccb_h.ccb_dccb_ptr = dccb;
|
|
ccb->ccb_h.ccb_dpt_ptr = dpt;
|
|
|
|
/*
|
|
* Explicitly set all flags so that the compiler can
|
|
* be smart about setting them.
|
|
*/
|
|
eccb->SCSI_Reset = 0;
|
|
eccb->HBA_Init = 0;
|
|
eccb->Auto_Req_Sen = (ccb->ccb_h.flags & CAM_DIS_AUTOSENSE)
|
|
? 0 : 1;
|
|
eccb->scatter = 0;
|
|
eccb->Quick = 0;
|
|
eccb->Interpret =
|
|
ccb->ccb_h.target_id == dpt->hostid[cam_sim_bus(sim)]
|
|
? 1 : 0;
|
|
eccb->DataOut = (ccb->ccb_h.flags & CAM_DIR_OUT) ? 1 : 0;
|
|
eccb->DataIn = (ccb->ccb_h.flags & CAM_DIR_IN) ? 1 : 0;
|
|
eccb->reqlen = csio->sense_len;
|
|
eccb->cp_id = ccb->ccb_h.target_id;
|
|
eccb->cp_channel = cam_sim_bus(sim);
|
|
eccb->cp_LUN = ccb->ccb_h.target_lun;
|
|
eccb->cp_luntar = 0;
|
|
eccb->cp_dispri = (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
|
|
? 0 : 1;
|
|
eccb->cp_identify = 1;
|
|
|
|
if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0
|
|
&& csio->tag_action != CAM_TAG_ACTION_NONE) {
|
|
eccb->cp_msg[0] = csio->tag_action;
|
|
eccb->cp_msg[1] = dccb->tag;
|
|
} else {
|
|
eccb->cp_msg[0] = 0;
|
|
eccb->cp_msg[1] = 0;
|
|
}
|
|
eccb->cp_msg[2] = 0;
|
|
|
|
if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0) {
|
|
if ((ccb->ccb_h.flags & CAM_CDB_PHYS) == 0) {
|
|
bcopy(csio->cdb_io.cdb_ptr,
|
|
eccb->cp_cdb, csio->cdb_len);
|
|
} else {
|
|
/* I guess I could map it in... */
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
dptfreeccb(dpt, dccb);
|
|
xpt_done(ccb);
|
|
return;
|
|
}
|
|
} else {
|
|
bcopy(csio->cdb_io.cdb_bytes,
|
|
eccb->cp_cdb, csio->cdb_len);
|
|
}
|
|
/*
|
|
* If we have any data to send with this command,
|
|
* map it into bus space.
|
|
*/
|
|
/* Only use S/G if there is a transfer */
|
|
if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
|
|
if ((ccbh->flags & CAM_SCATTER_VALID) == 0) {
|
|
/*
|
|
* We've been given a pointer
|
|
* to a single buffer.
|
|
*/
|
|
if ((ccbh->flags & CAM_DATA_PHYS) == 0) {
|
|
int s;
|
|
int error;
|
|
|
|
s = splsoftvm();
|
|
error =
|
|
bus_dmamap_load(dpt->buffer_dmat,
|
|
dccb->dmamap,
|
|
csio->data_ptr,
|
|
csio->dxfer_len,
|
|
dptexecuteccb,
|
|
dccb, /*flags*/0);
|
|
if (error == EINPROGRESS) {
|
|
/*
|
|
* So as to maintain ordering,
|
|
* freeze the controller queue
|
|
* until our mapping is
|
|
* returned.
|
|
*/
|
|
xpt_freeze_simq(sim, 1);
|
|
dccb->state |= CAM_RELEASE_SIMQ;
|
|
}
|
|
splx(s);
|
|
} else {
|
|
struct bus_dma_segment seg;
|
|
|
|
/* Pointer to physical buffer */
|
|
seg.ds_addr =
|
|
(bus_addr_t)csio->data_ptr;
|
|
seg.ds_len = csio->dxfer_len;
|
|
dptexecuteccb(dccb, &seg, 1, 0);
|
|
}
|
|
} else {
|
|
struct bus_dma_segment *segs;
|
|
|
|
if ((ccbh->flags & CAM_DATA_PHYS) != 0)
|
|
panic("dpt_action - Physical "
|
|
"segment pointers "
|
|
"unsupported");
|
|
|
|
if ((ccbh->flags&CAM_SG_LIST_PHYS)==0)
|
|
panic("dpt_action - Virtual "
|
|
"segment addresses "
|
|
"unsupported");
|
|
|
|
/* Just use the segments provided */
|
|
segs = (struct bus_dma_segment *)csio->data_ptr;
|
|
dptexecuteccb(dccb, segs, csio->sglist_cnt, 0);
|
|
}
|
|
} else {
|
|
/*
|
|
* XXX JGibbs.
|
|
* Does it want them both on or both off?
|
|
* CAM_DIR_NONE is both on, so this code can
|
|
* be removed if this is also what the DPT
|
|
* exptects.
|
|
*/
|
|
eccb->DataOut = 0;
|
|
eccb->DataIn = 0;
|
|
dptexecuteccb(dccb, NULL, 0, 0);
|
|
}
|
|
break;
|
|
}
|
|
case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
|
|
case XPT_ABORT: /* Abort the specified CCB */
|
|
/* XXX Implement */
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
break;
|
|
case XPT_SET_TRAN_SETTINGS:
|
|
{
|
|
ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
|
|
xpt_done(ccb);
|
|
break;
|
|
}
|
|
case XPT_GET_TRAN_SETTINGS:
|
|
/* Get default/user set transfer settings for the target */
|
|
{
|
|
struct ccb_trans_settings *cts;
|
|
u_int target_mask;
|
|
|
|
cts = &ccb->cts;
|
|
target_mask = 0x01 << ccb->ccb_h.target_id;
|
|
if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) {
|
|
cts->flags = CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB;
|
|
cts->bus_width = (dpt->max_id > 7)
|
|
? MSG_EXT_WDTR_BUS_8_BIT
|
|
: MSG_EXT_WDTR_BUS_16_BIT;
|
|
cts->sync_period = 25; /* 10MHz */
|
|
|
|
if (cts->sync_period != 0)
|
|
cts->sync_offset = 15;
|
|
|
|
cts->valid = CCB_TRANS_SYNC_RATE_VALID
|
|
| CCB_TRANS_SYNC_OFFSET_VALID
|
|
| CCB_TRANS_BUS_WIDTH_VALID
|
|
| CCB_TRANS_DISC_VALID
|
|
| CCB_TRANS_TQ_VALID;
|
|
ccb->ccb_h.status = CAM_REQ_CMP;
|
|
} else {
|
|
ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
|
|
}
|
|
xpt_done(ccb);
|
|
break;
|
|
}
|
|
case XPT_CALC_GEOMETRY:
|
|
{
|
|
struct ccb_calc_geometry *ccg;
|
|
u_int32_t size_mb;
|
|
u_int32_t secs_per_cylinder;
|
|
int extended;
|
|
|
|
/*
|
|
* XXX Use Adaptec translation until I find out how to
|
|
* get this information from the card.
|
|
*/
|
|
ccg = &ccb->ccg;
|
|
size_mb = ccg->volume_size
|
|
/ ((1024L * 1024L) / ccg->block_size);
|
|
extended = 1;
|
|
|
|
if (size_mb > 1024 && extended) {
|
|
ccg->heads = 255;
|
|
ccg->secs_per_track = 63;
|
|
} else {
|
|
ccg->heads = 64;
|
|
ccg->secs_per_track = 32;
|
|
}
|
|
secs_per_cylinder = ccg->heads * ccg->secs_per_track;
|
|
ccg->cylinders = ccg->volume_size / secs_per_cylinder;
|
|
ccb->ccb_h.status = CAM_REQ_CMP;
|
|
xpt_done(ccb);
|
|
break;
|
|
}
|
|
case XPT_RESET_BUS: /* Reset the specified SCSI bus */
|
|
{
|
|
/* XXX Implement */
|
|
ccb->ccb_h.status = CAM_REQ_CMP;
|
|
xpt_done(ccb);
|
|
break;
|
|
}
|
|
case XPT_TERM_IO: /* Terminate the I/O process */
|
|
/* XXX Implement */
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
break;
|
|
case XPT_PATH_INQ: /* Path routing inquiry */
|
|
{
|
|
struct ccb_pathinq *cpi = &ccb->cpi;
|
|
|
|
cpi->version_num = 1;
|
|
cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
|
|
if (dpt->max_id > 7)
|
|
cpi->hba_inquiry |= PI_WIDE_16;
|
|
cpi->target_sprt = 0;
|
|
cpi->hba_misc = 0;
|
|
cpi->hba_eng_cnt = 0;
|
|
cpi->max_target = dpt->max_id;
|
|
cpi->max_lun = dpt->max_lun;
|
|
cpi->initiator_id = dpt->hostid[cam_sim_bus(sim)];
|
|
cpi->bus_id = cam_sim_bus(sim);
|
|
cpi->base_transfer_speed = 3300;
|
|
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
|
|
strncpy(cpi->hba_vid, "DPT", HBA_IDLEN);
|
|
strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
|
|
cpi->unit_number = cam_sim_unit(sim);
|
|
cpi->ccb_h.status = CAM_REQ_CMP;
|
|
xpt_done(ccb);
|
|
break;
|
|
}
|
|
default:
|
|
ccb->ccb_h.status = CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This routine will try to send an EATA command to the DPT HBA.
|
|
* It will, by default, try 20,000 times, waiting 50us between tries.
|
|
* It returns 0 on success and 1 on failure.
|
|
* It is assumed to be called at splcam().
|
|
*/
|
|
static int
|
|
dpt_send_eata_command(dpt_softc_t *dpt, eata_ccb_t *cmd_block,
|
|
u_int32_t cmd_busaddr, u_int command, u_int retries,
|
|
u_int ifc, u_int code, u_int code2)
|
|
{
|
|
u_int loop;
|
|
|
|
if (!retries)
|
|
retries = 20000;
|
|
|
|
/*
|
|
* 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);
|
|
}
|
|
|
|
/* The controller is alive, advance the wedge timer */
|
|
#ifdef DPT_RESET_HBA
|
|
dpt->last_contact = microtime_now;
|
|
#endif
|
|
|
|
if (cmd_block == NULL)
|
|
cmd_busaddr = 0;
|
|
#if (BYTE_ORDER == BIG_ENDIAN)
|
|
else {
|
|
cmd_busaddr = ((cmd_busaddr >> 24) & 0xFF)
|
|
| ((cmd_busaddr >> 16) & 0xFF)
|
|
| ((cmd_busaddr >> 8) & 0xFF)
|
|
| (cmd_busaddr & 0xFF);
|
|
}
|
|
#endif
|
|
/* And now the address */
|
|
dpt_outl(dpt, HA_WDMAADDR, cmd_busaddr);
|
|
|
|
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);
|
|
}
|
|
|
|
|
|
/* ==================== Exported Function definitions =======================*/
|
|
struct dpt_softc *
|
|
dpt_alloc(u_int unit, bus_space_tag_t tag, bus_space_handle_t bsh)
|
|
{
|
|
struct dpt_softc *dpt;
|
|
int i;
|
|
|
|
dpt = (struct dpt_softc *)malloc(sizeof(*dpt), M_DEVBUF, M_NOWAIT);
|
|
if (dpt == NULL) {
|
|
printf("dpt%d: Unable to allocate softc\n", dpt->unit);
|
|
return (NULL);
|
|
}
|
|
|
|
bzero(dpt, sizeof(dpt_softc_t));
|
|
dpt->tag = tag;
|
|
dpt->bsh = bsh;
|
|
dpt->unit = unit;
|
|
SLIST_INIT(&dpt->free_dccb_list);
|
|
LIST_INIT(&dpt->pending_ccb_list);
|
|
TAILQ_INSERT_TAIL(&dpt_softcs, dpt, links);
|
|
for (i = 0; i < MAX_CHANNELS; i++)
|
|
dpt->resetlevel[i] = DPT_HA_OK;
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
dpt_reset_performance(dpt);
|
|
#endif /* DPT_MEASURE_PERFORMANCE */
|
|
return (dpt);
|
|
}
|
|
|
|
void
|
|
dpt_free(struct dpt_softc *dpt)
|
|
{
|
|
switch (dpt->init_level) {
|
|
default:
|
|
case 5:
|
|
bus_dmamap_unload(dpt->dccb_dmat, dpt->dccb_dmamap);
|
|
case 4:
|
|
bus_dmamem_free(dpt->dccb_dmat, dpt->dpt_dccbs,
|
|
dpt->dccb_dmamap);
|
|
bus_dmamap_destroy(dpt->dccb_dmat, dpt->dccb_dmamap);
|
|
case 3:
|
|
bus_dma_tag_destroy(dpt->dccb_dmat);
|
|
case 2:
|
|
bus_dma_tag_destroy(dpt->buffer_dmat);
|
|
case 1:
|
|
{
|
|
struct sg_map_node *sg_map;
|
|
|
|
while ((sg_map = SLIST_FIRST(&dpt->sg_maps)) != NULL) {
|
|
SLIST_REMOVE_HEAD(&dpt->sg_maps, links);
|
|
bus_dmamap_unload(dpt->sg_dmat,
|
|
sg_map->sg_dmamap);
|
|
bus_dmamem_free(dpt->sg_dmat, sg_map->sg_vaddr,
|
|
sg_map->sg_dmamap);
|
|
free(sg_map, M_DEVBUF);
|
|
}
|
|
bus_dma_tag_destroy(dpt->sg_dmat);
|
|
}
|
|
case 0:
|
|
break;
|
|
}
|
|
TAILQ_REMOVE(&dpt_softcs, dpt, links);
|
|
free(dpt, M_DEVBUF);
|
|
}
|
|
|
|
static u_int8_t string_sizes[] =
|
|
{
|
|
sizeof(((dpt_inq_t*)NULL)->vendor),
|
|
sizeof(((dpt_inq_t*)NULL)->modelNum),
|
|
sizeof(((dpt_inq_t*)NULL)->firmware),
|
|
sizeof(((dpt_inq_t*)NULL)->protocol),
|
|
};
|
|
|
|
int
|
|
dpt_init(struct dpt_softc *dpt)
|
|
{
|
|
dpt_conf_t conf;
|
|
struct sg_map_node *sg_map;
|
|
dpt_ccb_t *dccb;
|
|
u_int8_t *strp;
|
|
int index;
|
|
int i;
|
|
int retval;
|
|
|
|
dpt->init_level = 0;
|
|
SLIST_INIT(&dpt->sg_maps);
|
|
|
|
#ifdef DPT_RESET_BOARD
|
|
printf("dpt%d: resetting HBA\n", dpt->unit);
|
|
dpt_outb(dpt, HA_WCOMMAND, EATA_CMD_RESET);
|
|
DELAY(750000);
|
|
/* XXX Shouldn't we poll a status register or something??? */
|
|
#endif
|
|
/* DMA tag for our S/G structures. We allocate in page sized chunks */
|
|
if (bus_dma_tag_create(dpt->parent_dmat, /*alignment*/1, /*boundary*/0,
|
|
/*lowaddr*/BUS_SPACE_MAXADDR,
|
|
/*highaddr*/BUS_SPACE_MAXADDR,
|
|
/*filter*/NULL, /*filterarg*/NULL,
|
|
PAGE_SIZE, /*nsegments*/1,
|
|
/*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
|
|
/*flags*/0, &dpt->sg_dmat) != 0) {
|
|
goto error_exit;
|
|
}
|
|
|
|
dpt->init_level++;
|
|
|
|
/*
|
|
* We allocate our DPT ccbs as a contiguous array of bus dma'able
|
|
* memory. To get the allocation size, we need to know how many
|
|
* ccbs the card supports. This requires a ccb. We solve this
|
|
* chicken and egg problem by allocating some re-usable S/G space
|
|
* up front, and treating it as our status packet, CCB, and target
|
|
* memory space for these commands.
|
|
*/
|
|
sg_map = dptallocsgmap(dpt);
|
|
if (sg_map == NULL)
|
|
goto error_exit;
|
|
|
|
dpt->sp = (volatile dpt_sp_t *)sg_map->sg_vaddr;
|
|
dccb = (struct dpt_ccb *)&dpt->sp[1];
|
|
bzero(dccb, sizeof(*dccb));
|
|
dpt->sp_physaddr = sg_map->sg_physaddr;
|
|
dccb->eata_ccb.cp_dataDMA =
|
|
htonl(sg_map->sg_physaddr + sizeof(dpt_sp_t) + sizeof(*dccb));
|
|
dccb->eata_ccb.cp_busaddr = ~0;
|
|
dccb->eata_ccb.cp_statDMA = htonl(dpt->sp_physaddr);
|
|
dccb->eata_ccb.cp_reqDMA = htonl(dpt->sp_physaddr + sizeof(*dccb)
|
|
+ offsetof(struct dpt_ccb, sense_data));
|
|
|
|
/* Okay. Fetch our config */
|
|
bzero(&dccb[1], sizeof(conf)); /* data area */
|
|
retval = dpt_get_conf(dpt, dccb, sg_map->sg_physaddr + sizeof(dpt_sp_t),
|
|
sizeof(conf), 0xc1, 7, 1);
|
|
|
|
if (retval != 0) {
|
|
printf("dpt%d: Failed to get board configuration\n", dpt->unit);
|
|
return (retval);
|
|
}
|
|
bcopy(&dccb[1], &conf, sizeof(conf));
|
|
|
|
bzero(&dccb[1], sizeof(dpt->board_data));
|
|
retval = dpt_get_conf(dpt, dccb, sg_map->sg_physaddr + sizeof(dpt_sp_t),
|
|
sizeof(dpt->board_data), 0, conf.scsi_id0, 0);
|
|
if (retval != 0) {
|
|
printf("dpt%d: Failed to get inquiry information\n", dpt->unit);
|
|
return (retval);
|
|
}
|
|
bcopy(&dccb[1], &dpt->board_data, sizeof(dpt->board_data));
|
|
|
|
dpt_detect_cache(dpt, dccb, sg_map->sg_physaddr + sizeof(dpt_sp_t),
|
|
(u_int8_t *)&dccb[1]);
|
|
|
|
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 = '?';
|
|
}
|
|
|
|
dpt->max_id = conf.MAX_ID;
|
|
dpt->max_lun = conf.MAX_LUN;
|
|
dpt->irq = conf.IRQ;
|
|
dpt->dma_channel = (8 - conf.DMA_channel) & 7;
|
|
dpt->channels = conf.MAX_CHAN + 1;
|
|
dpt->state |= DPT_HA_OK;
|
|
if (conf.SECOND)
|
|
dpt->primary = FALSE;
|
|
else
|
|
dpt->primary = TRUE;
|
|
|
|
dpt->more_support = conf.MORE_support;
|
|
|
|
if (strncmp(dpt->board_data.firmware, "07G0", 4) >= 0)
|
|
dpt->immediate_support = 1;
|
|
else
|
|
dpt->immediate_support = 0;
|
|
|
|
dpt->broken_INQUIRY = FALSE;
|
|
|
|
dpt->cplen = ntohl(conf.cplen);
|
|
dpt->cppadlen = ntohs(conf.cppadlen);
|
|
dpt->max_dccbs = ntohs(conf.queuesiz);
|
|
|
|
if (dpt->max_dccbs > 256) {
|
|
printf("dpt%d: Max CCBs reduced from %d to "
|
|
"256 due to tag algorithm\n", dpt->unit, dpt->max_dccbs);
|
|
dpt->max_dccbs = 256;
|
|
}
|
|
|
|
dpt->hostid[0] = conf.scsi_id0;
|
|
dpt->hostid[1] = conf.scsi_id1;
|
|
dpt->hostid[2] = conf.scsi_id2;
|
|
|
|
if (conf.SG_64K)
|
|
dpt->sgsize = 8192;
|
|
else
|
|
dpt->sgsize = ntohs(conf.SGsiz);
|
|
|
|
/* We can only get 64k buffers, so don't bother to waste space. */
|
|
if (dpt->sgsize < 17 || dpt->sgsize > 32)
|
|
dpt->sgsize = 32;
|
|
|
|
if (dpt->sgsize > dpt_max_segs)
|
|
dpt->sgsize = dpt_max_segs;
|
|
|
|
/* DMA tag for mapping buffers into device visible space. */
|
|
if (bus_dma_tag_create(dpt->parent_dmat, /*alignment*/1, /*boundary*/0,
|
|
/*lowaddr*/BUS_SPACE_MAXADDR,
|
|
/*highaddr*/BUS_SPACE_MAXADDR,
|
|
/*filter*/NULL, /*filterarg*/NULL,
|
|
/*maxsize*/MAXBSIZE, /*nsegments*/dpt->sgsize,
|
|
/*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
|
|
/*flags*/BUS_DMA_ALLOCNOW,
|
|
&dpt->buffer_dmat) != 0) {
|
|
goto error_exit;
|
|
}
|
|
|
|
dpt->init_level++;
|
|
|
|
/* DMA tag for our ccb structures and interrupt status packet */
|
|
if (bus_dma_tag_create(dpt->parent_dmat, /*alignment*/1, /*boundary*/0,
|
|
/*lowaddr*/BUS_SPACE_MAXADDR,
|
|
/*highaddr*/BUS_SPACE_MAXADDR,
|
|
/*filter*/NULL, /*filterarg*/NULL,
|
|
(dpt->max_dccbs * sizeof(struct dpt_ccb))
|
|
+ sizeof(dpt_sp_t),
|
|
/*nsegments*/1,
|
|
/*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
|
|
/*flags*/0, &dpt->dccb_dmat) != 0) {
|
|
goto error_exit;
|
|
}
|
|
|
|
dpt->init_level++;
|
|
|
|
/* Allocation for our ccbs and interrupt status packet */
|
|
if (bus_dmamem_alloc(dpt->dccb_dmat, (void **)&dpt->dpt_dccbs,
|
|
BUS_DMA_NOWAIT, &dpt->dccb_dmamap) != 0) {
|
|
goto error_exit;
|
|
}
|
|
|
|
dpt->init_level++;
|
|
|
|
/* And permanently map them */
|
|
bus_dmamap_load(dpt->dccb_dmat, dpt->dccb_dmamap,
|
|
dpt->dpt_dccbs,
|
|
(dpt->max_dccbs * sizeof(struct dpt_ccb))
|
|
+ sizeof(dpt_sp_t),
|
|
dptmapmem, &dpt->dpt_ccb_busbase, /*flags*/0);
|
|
|
|
/* Clear them out. */
|
|
bzero(dpt->dpt_dccbs,
|
|
(dpt->max_dccbs * sizeof(struct dpt_ccb)) + sizeof(dpt_sp_t));
|
|
|
|
dpt->dpt_ccb_busend = dpt->dpt_ccb_busbase;
|
|
|
|
dpt->sp = (dpt_sp_t*)&dpt->dpt_dccbs[dpt->max_dccbs];
|
|
dpt->sp_physaddr = dpt->dpt_ccb_busbase
|
|
+ (dpt->max_dccbs * sizeof(dpt_ccb_t));
|
|
dpt->init_level++;
|
|
|
|
/* Allocate our first batch of ccbs */
|
|
if (dptallocccbs(dpt) == 0)
|
|
return (2);
|
|
|
|
/* Prepare for Target Mode */
|
|
dpt->target_mode_enabled = 1;
|
|
|
|
/* Nuke excess spaces from inquiry information */
|
|
strp = dpt->board_data.vendor;
|
|
for (i = 0; i < sizeof(string_sizes); i++) {
|
|
index = string_sizes[i] - 1;
|
|
while (index && (strp[index] == ' '))
|
|
strp[index--] = '\0';
|
|
strp += string_sizes[i];
|
|
}
|
|
|
|
printf("dpt%d: %.8s %.16s FW Rev. %.4s, ",
|
|
dpt->unit, dpt->board_data.vendor,
|
|
dpt->board_data.modelNum, dpt->board_data.firmware);
|
|
|
|
printf("%d channel%s, ", dpt->channels, dpt->channels > 1 ? "s" : "");
|
|
|
|
if (dpt->cache_type != DPT_NO_CACHE
|
|
&& dpt->cache_size != 0) {
|
|
printf("%s Cache, ",
|
|
dpt->cache_type == DPT_CACHE_WRITETHROUGH
|
|
? "Write-Through" : "Write-Back");
|
|
}
|
|
|
|
printf("%d CCBs\n", dpt->max_dccbs);
|
|
return (0);
|
|
|
|
error_exit:
|
|
return (1);
|
|
}
|
|
|
|
int
|
|
dpt_attach(dpt_softc_t *dpt)
|
|
{
|
|
struct cam_devq *devq;
|
|
int i;
|
|
|
|
/*
|
|
* Create the device queue for our SIM.
|
|
*/
|
|
devq = cam_simq_alloc(dpt->max_dccbs);
|
|
if (devq == NULL)
|
|
return (0);
|
|
|
|
for (i = 0; i < dpt->channels; i++) {
|
|
/*
|
|
* Construct our SIM entry
|
|
*/
|
|
dpt->sims[i] = cam_sim_alloc(dpt_action, dpt_poll, "dpt",
|
|
dpt, dpt->unit, /*untagged*/2,
|
|
/*tagged*/dpt->max_dccbs, devq);
|
|
if (xpt_bus_register(dpt->sims[i], i) != CAM_SUCCESS) {
|
|
cam_sim_free(dpt->sims[i], /*free_devq*/i == 0);
|
|
break;
|
|
}
|
|
|
|
if (xpt_create_path(&dpt->paths[i], /*periph*/NULL,
|
|
cam_sim_path(dpt->sims[i]),
|
|
CAM_TARGET_WILDCARD,
|
|
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
|
|
xpt_bus_deregister(cam_sim_path(dpt->sims[i]));
|
|
cam_sim_free(dpt->sims[i], /*free_devq*/i == 0);
|
|
break;
|
|
}
|
|
|
|
}
|
|
if (i > 0)
|
|
at_shutdown(dptshutdown, dpt, SHUTDOWN_FINAL);
|
|
return (i);
|
|
}
|
|
|
|
|
|
/*
|
|
* This is the interrupt handler for the DPT driver.
|
|
*/
|
|
void
|
|
dpt_intr(void *arg)
|
|
{
|
|
dpt_softc_t *dpt;
|
|
dpt_ccb_t *dccb;
|
|
union ccb *ccb;
|
|
u_int status;
|
|
u_int aux_status;
|
|
u_int hba_stat;
|
|
u_int scsi_stat;
|
|
u_int32_t residue_len; /* Number of bytes not transferred */
|
|
|
|
dpt = (dpt_softc_t *)arg;
|
|
|
|
/* First order of business is to check if this interrupt is for us */
|
|
while (((aux_status = dpt_inb(dpt, HA_RAUXSTAT)) & HA_AIRQ) != 0) {
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
if (dpt->sp->ccb_busaddr < dpt->dpt_ccb_busbase
|
|
|| dpt->sp->ccb_busaddr >= dpt->dpt_ccb_busend) {
|
|
printf("Encountered bogus status packet\n");
|
|
status = dpt_inb(dpt, HA_RSTATUS);
|
|
return;
|
|
}
|
|
|
|
dccb = dptccbptov(dpt, dpt->sp->ccb_busaddr);
|
|
|
|
dpt->sp->ccb_busaddr = ~0;
|
|
|
|
/* 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_HANDLE_TIMEOUTS
|
|
dccb->state |= DPT_CCB_STATE_MARKED_LOST;
|
|
#endif
|
|
/* This CLEARS the interrupt! */
|
|
status = dpt_inb(dpt, HA_RSTATUS);
|
|
continue;
|
|
}
|
|
dpt->sp->EOC = 0;
|
|
|
|
/*
|
|
* Double buffer the status information so the hardware can
|
|
* work on updating the status packet while we decifer the
|
|
* one we were just interrupted for.
|
|
* According to Mark Salyzyn, we only need few pieces of it.
|
|
*/
|
|
hba_stat = dpt->sp->hba_stat;
|
|
scsi_stat = dpt->sp->scsi_stat;
|
|
residue_len = dpt->sp->residue_len;
|
|
|
|
/* 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);
|
|
panic("DPT Rebooted");
|
|
|
|
}
|
|
}
|
|
/* Process CCB */
|
|
ccb = dccb->ccb;
|
|
untimeout(dpttimeout, dccb, ccb->ccb_h.timeout_ch);
|
|
if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
|
|
bus_dmasync_op_t op;
|
|
|
|
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
|
|
op = BUS_DMASYNC_POSTREAD;
|
|
else
|
|
op = BUS_DMASYNC_POSTWRITE;
|
|
bus_dmamap_sync(dpt->buffer_dmat, dccb->dmamap, op);
|
|
bus_dmamap_unload(dpt->buffer_dmat, dccb->dmamap);
|
|
}
|
|
|
|
/* Common Case inline... */
|
|
if (hba_stat == HA_NO_ERROR) {
|
|
ccb->csio.scsi_status = scsi_stat;
|
|
ccb->ccb_h.status = 0;
|
|
switch (scsi_stat) {
|
|
case SCSI_STATUS_OK:
|
|
ccb->ccb_h.status |= CAM_REQ_CMP;
|
|
break;
|
|
case SCSI_STATUS_CHECK_COND:
|
|
case SCSI_STATUS_CMD_TERMINATED:
|
|
bcopy(&dccb->sense_data, &ccb->csio.sense_data,
|
|
ccb->csio.sense_len);
|
|
ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
|
|
/* FALLTHROUGH */
|
|
default:
|
|
ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
|
|
/* XXX Freeze DevQ */
|
|
break;
|
|
}
|
|
ccb->csio.resid = residue_len;
|
|
dptfreeccb(dpt, dccb);
|
|
xpt_done(ccb);
|
|
} else {
|
|
dptprocesserror(dpt, dccb, ccb, hba_stat, scsi_stat,
|
|
residue_len);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
dptprocesserror(dpt_softc_t *dpt, dpt_ccb_t *dccb, union ccb *ccb,
|
|
u_int hba_stat, u_int scsi_stat, u_int32_t resid)
|
|
{
|
|
ccb->csio.resid = resid;
|
|
switch (hba_stat) {
|
|
case HA_ERR_SEL_TO:
|
|
ccb->ccb_h.status = CAM_SEL_TIMEOUT;
|
|
break;
|
|
case HA_ERR_CMD_TO:
|
|
ccb->ccb_h.status = CAM_CMD_TIMEOUT;
|
|
break;
|
|
case HA_SCSIBUS_RESET:
|
|
case HA_HBA_POWER_UP: /* Similar effect to a bus reset??? */
|
|
ccb->ccb_h.status = CAM_SCSI_BUS_RESET;
|
|
break;
|
|
case HA_CP_ABORTED:
|
|
case HA_CP_RESET: /* XXX ??? */
|
|
case HA_CP_ABORT_NA: /* XXX ??? */
|
|
case HA_CP_RESET_NA: /* XXX ??? */
|
|
if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INPROG)
|
|
ccb->ccb_h.status = CAM_REQ_ABORTED;
|
|
break;
|
|
case HA_PCI_PARITY:
|
|
case HA_PCI_MABORT:
|
|
case HA_PCI_TABORT:
|
|
case HA_PCI_STABORT:
|
|
case HA_BUS_PARITY:
|
|
case HA_PARITY_ERR:
|
|
case HA_ECC_ERR:
|
|
ccb->ccb_h.status = CAM_UNCOR_PARITY;
|
|
break;
|
|
case HA_UNX_MSGRJCT:
|
|
ccb->ccb_h.status = CAM_MSG_REJECT_REC;
|
|
break;
|
|
case HA_UNX_BUSPHASE:
|
|
ccb->ccb_h.status = CAM_SEQUENCE_FAIL;
|
|
break;
|
|
case HA_UNX_BUS_FREE:
|
|
ccb->ccb_h.status = CAM_UNEXP_BUSFREE;
|
|
break;
|
|
case HA_SCSI_HUNG:
|
|
case HA_RESET_STUCK:
|
|
/*
|
|
* Dead??? Can the controller get unstuck
|
|
* from these conditions
|
|
*/
|
|
ccb->ccb_h.status = CAM_NO_HBA;
|
|
break;
|
|
case HA_RSENSE_FAIL:
|
|
ccb->ccb_h.status = CAM_AUTOSENSE_FAIL;
|
|
break;
|
|
default:
|
|
printf("dpt%d: Undocumented Error %x\n", dpt->unit, hba_stat);
|
|
printf("Please mail this message to shimon@simon-shapiro.org\n");
|
|
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
|
|
break;
|
|
}
|
|
dptfreeccb(dpt, dccb);
|
|
xpt_done(ccb);
|
|
}
|
|
|
|
static void
|
|
dpttimeout(void *arg)
|
|
{
|
|
struct dpt_ccb *dccb;
|
|
union ccb *ccb;
|
|
struct dpt_softc *dpt;
|
|
int s;
|
|
|
|
dccb = (struct dpt_ccb *)arg;
|
|
ccb = dccb->ccb;
|
|
dpt = (struct dpt_softc *)ccb->ccb_h.ccb_dpt_ptr;
|
|
xpt_print_path(ccb->ccb_h.path);
|
|
printf("CCB %p - timed out\n", (void *)dccb);
|
|
|
|
s = splcam();
|
|
|
|
/*
|
|
* Try to clear any pending jobs. FreeBSD will loose interrupts,
|
|
* leaving the controller suspended, and commands timed-out.
|
|
* By calling the interrupt handler, any command thus stuck will be
|
|
* completed.
|
|
*/
|
|
dpt_intr(dpt);
|
|
|
|
if ((dccb->state & DCCB_ACTIVE) == 0) {
|
|
xpt_print_path(ccb->ccb_h.path);
|
|
printf("CCB %p - timed out CCB already completed\n",
|
|
(void *)dccb);
|
|
splx(s);
|
|
return;
|
|
}
|
|
|
|
/* Abort this particular command. Leave all others running */
|
|
dpt_send_immediate(dpt, &dccb->eata_ccb, dccb->eata_ccb.cp_busaddr,
|
|
/*retries*/20000, EATA_SPECIFIC_ABORT, 0, 0);
|
|
ccb->ccb_h.status = CAM_CMD_TIMEOUT;
|
|
splx(s);
|
|
}
|
|
|
|
/*
|
|
* Shutdown the controller and ensure that the cache is completely flushed.
|
|
* Called via at_shutdown(9) after all disk access has completed.
|
|
*/
|
|
static void
|
|
dptshutdown(int howto, void *arg)
|
|
{
|
|
dpt_softc_t *dpt;
|
|
|
|
dpt = (dpt_softc_t *)arg;
|
|
|
|
printf("dpt%d: Shutting down (mode %x) HBA. Please wait...\n",
|
|
dpt->unit, howto);
|
|
|
|
/*
|
|
* What we do for a shutdown, is give the DPT early power loss warning
|
|
*/
|
|
dpt_send_immediate(dpt, NULL, 0, EATA_POWER_OFF_WARN, 0, 0, 0);
|
|
DELAY(1000 * 1000 * 5);
|
|
printf("dpt%d: Controller was warned of shutdown and is now "
|
|
"disabled\n", dpt->unit);
|
|
}
|
|
|
|
/*============================================================================*/
|
|
|
|
#if 0
|
|
#ifdef DPT_RESET_HBA
|
|
|
|
/*
|
|
** Function name : dpt_reset_hba
|
|
**
|
|
** Description : Reset the HBA and properly discard all pending work
|
|
** Input : Softc
|
|
** Output : Nothing
|
|
*/
|
|
static void
|
|
dpt_reset_hba(dpt_softc_t *dpt)
|
|
{
|
|
eata_ccb_t *ccb;
|
|
int ospl;
|
|
dpt_ccb_t dccb, *dccbp;
|
|
int result;
|
|
struct scsi_xfer *xs;
|
|
|
|
/* Prepare a control block. The SCSI command part is immaterial */
|
|
dccb.xs = NULL;
|
|
dccb.flags = 0;
|
|
dccb.state = DPT_CCB_STATE_NEW;
|
|
dccb.std_callback = NULL;
|
|
dccb.wrbuff_callback = NULL;
|
|
|
|
ccb = &dccb.eata_ccb;
|
|
ccb->CP_OpCode = EATA_CMD_RESET;
|
|
ccb->SCSI_Reset = 0;
|
|
ccb->HBA_Init = 1;
|
|
ccb->Auto_Req_Sen = 1;
|
|
ccb->cp_id = 0; /* Should be ignored */
|
|
ccb->DataIn = 1;
|
|
ccb->DataOut = 0;
|
|
ccb->Interpret = 1;
|
|
ccb->reqlen = htonl(sizeof(struct scsi_sense_data));
|
|
ccb->cp_statDMA = htonl(vtophys(&ccb->cp_statDMA));
|
|
ccb->cp_reqDMA = htonl(vtophys(&ccb->cp_reqDMA));
|
|
ccb->cp_viraddr = (u_int32_t) & ccb;
|
|
|
|
ccb->cp_msg[0] = HA_IDENTIFY_MSG | HA_DISCO_RECO;
|
|
ccb->cp_scsi_cmd = 0; /* Should be ignored */
|
|
|
|
/* Lock up the submitted queue. We are very persistant here */
|
|
ospl = splcam();
|
|
while (dpt->queue_status & DPT_SUBMITTED_QUEUE_ACTIVE) {
|
|
DELAY(100);
|
|
}
|
|
|
|
dpt->queue_status |= DPT_SUBMITTED_QUEUE_ACTIVE;
|
|
splx(ospl);
|
|
|
|
/* Send the RESET message */
|
|
if ((result = dpt_send_eata_command(dpt, &dccb.eata_ccb,
|
|
EATA_CMD_RESET, 0, 0, 0, 0)) != 0) {
|
|
printf("dpt%d: Failed to send the RESET message.\n"
|
|
" Trying cold boot (ouch!)\n", dpt->unit);
|
|
|
|
|
|
if ((result = dpt_send_eata_command(dpt, &dccb.eata_ccb,
|
|
EATA_COLD_BOOT, 0, 0,
|
|
0, 0)) != 0) {
|
|
panic("dpt%d: Faild to cold boot the HBA\n",
|
|
dpt->unit);
|
|
}
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
dpt->performance.cold_boots++;
|
|
#endif /* DPT_MEASURE_PERFORMANCE */
|
|
}
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
dpt->performance.warm_starts++;
|
|
#endif /* DPT_MEASURE_PERFORMANCE */
|
|
|
|
printf("dpt%d: Aborting pending requests. O/S should re-submit\n",
|
|
dpt->unit);
|
|
|
|
while ((dccbp = TAILQ_FIRST(&dpt->completed_ccbs)) != NULL) {
|
|
struct scsi_xfer *xs = dccbp->xs;
|
|
|
|
/* Not all transactions have xs structs */
|
|
if (xs != NULL) {
|
|
/* Tell the kernel proper this did not complete well */
|
|
xs->error |= XS_SELTIMEOUT;
|
|
xs->flags |= SCSI_ITSDONE;
|
|
scsi_done(xs);
|
|
}
|
|
|
|
dpt_Qremove_submitted(dpt, dccbp);
|
|
|
|
/* Remember, Callbacks are NOT in the standard queue */
|
|
if (dccbp->std_callback != NULL) {
|
|
(dccbp->std_callback)(dpt, dccbp->eata_ccb.cp_channel,
|
|
dccbp);
|
|
} else {
|
|
ospl = splcam();
|
|
dpt_Qpush_free(dpt, dccbp);
|
|
splx(ospl);
|
|
}
|
|
}
|
|
|
|
printf("dpt%d: reset done aborting all pending commands\n", dpt->unit);
|
|
dpt->queue_status &= ~DPT_SUBMITTED_QUEUE_ACTIVE;
|
|
}
|
|
|
|
#endif /* DPT_RESET_HBA */
|
|
|
|
/*
|
|
* Build a Command Block for target mode READ/WRITE BUFFER,
|
|
* with the ``sync'' bit ON.
|
|
*
|
|
* Although the length and offset are 24 bit fields in the command, they cannot
|
|
* exceed 8192 bytes, so we take them as short integers andcheck their range.
|
|
* If they are sensless, we round them to zero offset, maximum length and
|
|
* complain.
|
|
*/
|
|
|
|
static void
|
|
dpt_target_ccb(dpt_softc_t * dpt, int bus, u_int8_t target, u_int8_t lun,
|
|
dpt_ccb_t * ccb, int mode, u_int8_t command,
|
|
u_int16_t length, u_int16_t offset)
|
|
{
|
|
eata_ccb_t *cp;
|
|
int ospl;
|
|
|
|
if ((length + offset) > DPT_MAX_TARGET_MODE_BUFFER_SIZE) {
|
|
printf("dpt%d: Length of %d, and offset of %d are wrong\n",
|
|
dpt->unit, length, offset);
|
|
length = DPT_MAX_TARGET_MODE_BUFFER_SIZE;
|
|
offset = 0;
|
|
}
|
|
ccb->xs = NULL;
|
|
ccb->flags = 0;
|
|
ccb->state = DPT_CCB_STATE_NEW;
|
|
ccb->std_callback = (ccb_callback) dpt_target_done;
|
|
ccb->wrbuff_callback = NULL;
|
|
|
|
cp = &ccb->eata_ccb;
|
|
cp->CP_OpCode = EATA_CMD_DMA_SEND_CP;
|
|
cp->SCSI_Reset = 0;
|
|
cp->HBA_Init = 0;
|
|
cp->Auto_Req_Sen = 1;
|
|
cp->cp_id = target;
|
|
cp->DataIn = 1;
|
|
cp->DataOut = 0;
|
|
cp->Interpret = 0;
|
|
cp->reqlen = htonl(sizeof(struct scsi_sense_data));
|
|
cp->cp_statDMA = htonl(vtophys(&cp->cp_statDMA));
|
|
cp->cp_reqDMA = htonl(vtophys(&cp->cp_reqDMA));
|
|
cp->cp_viraddr = (u_int32_t) & ccb;
|
|
|
|
cp->cp_msg[0] = HA_IDENTIFY_MSG | HA_DISCO_RECO;
|
|
|
|
cp->cp_scsi_cmd = command;
|
|
cp->cp_cdb[1] = (u_int8_t) (mode & SCSI_TM_MODE_MASK);
|
|
cp->cp_lun = lun; /* Order is important here! */
|
|
cp->cp_cdb[2] = 0x00; /* Buffer Id, only 1 :-( */
|
|
cp->cp_cdb[3] = (length >> 16) & 0xFF; /* Buffer offset MSB */
|
|
cp->cp_cdb[4] = (length >> 8) & 0xFF;
|
|
cp->cp_cdb[5] = length & 0xFF;
|
|
cp->cp_cdb[6] = (length >> 16) & 0xFF; /* Length MSB */
|
|
cp->cp_cdb[7] = (length >> 8) & 0xFF;
|
|
cp->cp_cdb[8] = length & 0xFF; /* Length LSB */
|
|
cp->cp_cdb[9] = 0; /* No sync, no match bits */
|
|
|
|
/*
|
|
* This could be optimized to live in dpt_register_buffer.
|
|
* We keep it here, just in case the kernel decides to reallocate pages
|
|
*/
|
|
if (dpt_scatter_gather(dpt, ccb, DPT_RW_BUFFER_SIZE,
|
|
dpt->rw_buffer[bus][target][lun])) {
|
|
printf("dpt%d: Failed to setup Scatter/Gather for "
|
|
"Target-Mode buffer\n", dpt->unit);
|
|
}
|
|
}
|
|
|
|
/* Setup a target mode READ command */
|
|
|
|
static void
|
|
dpt_set_target(int redo, dpt_softc_t * dpt,
|
|
u_int8_t bus, u_int8_t target, u_int8_t lun, int mode,
|
|
u_int16_t length, u_int16_t offset, dpt_ccb_t * ccb)
|
|
{
|
|
int ospl;
|
|
|
|
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
|
|
dpt->performance.command_count[ccb->eata_ccb.cp_scsi_cmd]++;
|
|
ccb->command_started = microtime_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;
|
|
|
|
/* 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; /* Potential trouble */
|
|
|
|
ospl = splcam();
|
|
ccb->transaction_id = ++dpt->commands_processed;
|
|
|
|
#ifdef DPT_MEASURE_PERFORMANCE
|
|
dpt->performance.command_count[ccb->eata_ccb.cp_scsi_cmd]++;
|
|
ccb->command_started = microtime_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;
|
|
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);
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
/* 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)
|
|
{
|
|
dpt_ccb_t *ccb;
|
|
void *data;
|
|
int channel, target, lun;
|
|
int huh;
|
|
int result;
|
|
int ospl;
|
|
int submitted;
|
|
|
|
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[ccb->eata_ccb.cp_scsi_cmd];
|
|
ccb->command_started = microtime_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)(intptr_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;
|
|
}
|
|
|
|
#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;
|
|
u_int32_t age, max_age;
|
|
|
|
xs = ccb->xs;
|
|
age = dpt_time_delta(ccb->command_started, microtime_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 */
|
|
|
|
#endif
|