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freebsd-skq/sys/dev/aha/aha.c
imp 00736ae913 o enable plug and play support for the aha driver. Given the cumbersome 
pnp system in freebsd, I'm not sure how useful this will be, but my
  1542CP seems to work well in plug and play mode and does seem to
  probe correctly at all the oddball addresses/irq/drqs that I tried.
  [[
     I was unable to get /kernel.conf or /kernel.config to read in, so
     I wasn't able to verify that this method of userconfig works.  that's
     one thing that makes pnp so hard to use in the current scheme.
     Pointers to the right new way of doing this accepted.
  ]]
o Add some kludges to maybe bring support for 1540A/1542A into the
  driver.  Since I have no 154xA cards, and the only person I know
  that has them hasn't given me feedback, I'm making this commit
  blind.
o Honor unit numbers that are in the config file now.  This allows one
  to hard wire the unit numbers (and have high unit numbers for plug
  and pray devices, which can't seem to be hardwired) and have the
  cards not migrate from aha1 -> aha0 should aha0 go on the fritz.  I
  didn't verify that hard wired scsi busses would work, but did verify
  that hard wired aha addresses did work to a limited extent.  Both
  aha0 and aha1 must be hardwired, or when the card that was in aha0
  goes away, the probe for aha0 might pick up the card that otherwise
  would have been aha1.
1999-01-20 06:21:27 +00:00

1941 lines
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/*
* Generic register and struct definitions for the Adaptech 154x/164x
* SCSI host adapters. Product specific probe and attach routines can
* be found in:
* aha 1540/1542B/1542C/1542CF/1542CP aha_isa.c
*
* Copyright (c) 1998 M. Warner Losh.
* All Rights Reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Derived from bt.c written by:
*
* Copyright (c) 1998 Justin T. Gibbs.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: aha.c,v 1.18 1998/12/22 22:31:06 imp Exp $
*/
#include "pnp.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/clock.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>
#include <cam/cam_debug.h>
#include <cam/scsi/scsi_message.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#if NPNP > 0
#include <i386/isa/isa_device.h>
#include <i386/isa/pnp.h> /* XXX pnp isn't x86 only */
#endif
#include <dev/aha/ahareg.h>
struct aha_softc *aha_softcs[NAHATOT];
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define PRVERB(x) if (bootverbose) printf x
/* Macro to determine that a rev is potentially a new valid one
* so that the driver doesn't keep breaking on new revs as it
* did for the CF and CP.
*/
#define PROBABLY_NEW_BOARD(REV) (REV > 0x43 && REV < 0x56)
/* MailBox Management functions */
static __inline void ahanextinbox(struct aha_softc *aha);
static __inline void ahanextoutbox(struct aha_softc *aha);
static __inline void
ahanextinbox(struct aha_softc *aha)
{
if (aha->cur_inbox == aha->last_inbox)
aha->cur_inbox = aha->in_boxes;
else
aha->cur_inbox++;
}
static __inline void
ahanextoutbox(struct aha_softc *aha)
{
if (aha->cur_outbox == aha->last_outbox)
aha->cur_outbox = aha->out_boxes;
else
aha->cur_outbox++;
}
#define ahautoa24(u,s3) \
(s3)[0] = ((u) >> 16) & 0xff; \
(s3)[1] = ((u) >> 8) & 0xff; \
(s3)[2] = (u) & 0xff;
#define aha_a24tou(s3) \
(((s3)[0] << 16) | ((s3)[1] << 8) | (s3)[2])
/* CCB Mangement functions */
static __inline u_int32_t ahaccbvtop(struct aha_softc *aha,
struct aha_ccb *accb);
static __inline struct aha_ccb* ahaccbptov(struct aha_softc *aha,
u_int32_t ccb_addr);
static __inline u_int32_t
ahaccbvtop(struct aha_softc *aha, struct aha_ccb *accb)
{
return (aha->aha_ccb_physbase
+ (u_int32_t)((caddr_t)accb - (caddr_t)aha->aha_ccb_array));
}
static __inline struct aha_ccb *
ahaccbptov(struct aha_softc *aha, u_int32_t ccb_addr)
{
return (aha->aha_ccb_array +
+ ((struct aha_ccb*)ccb_addr-(struct aha_ccb*)aha->aha_ccb_physbase));
}
static struct aha_ccb* ahagetccb(struct aha_softc *aha);
static __inline void ahafreeccb(struct aha_softc *aha, struct aha_ccb *accb);
static void ahaallocccbs(struct aha_softc *aha);
static bus_dmamap_callback_t ahaexecuteccb;
static void ahadone(struct aha_softc *aha, struct aha_ccb *accb,
aha_mbi_comp_code_t comp_code);
/* Host adapter command functions */
static int ahareset(struct aha_softc* aha, int hard_reset);
/* Initialization functions */
static int ahainitmboxes(struct aha_softc *aha);
static bus_dmamap_callback_t ahamapmboxes;
static bus_dmamap_callback_t ahamapccbs;
static bus_dmamap_callback_t ahamapsgs;
/* Transfer Negotiation Functions */
static void ahafetchtransinfo(struct aha_softc *aha,
struct ccb_trans_settings *cts);
/* CAM SIM entry points */
#define ccb_accb_ptr spriv_ptr0
#define ccb_aha_ptr spriv_ptr1
static void ahaaction(struct cam_sim *sim, union ccb *ccb);
static void ahapoll(struct cam_sim *sim);
/* Our timeout handler */
timeout_t ahatimeout;
u_long aha_unit = 0;
/*
* Do our own re-probe protection until a configuration
* manager can do it for us. This ensures that we don't
* reprobe a card already found by the EISA or PCI probes.
*/
struct aha_isa_port aha_isa_ports[] =
{
{ 0x130, 0, 4 },
{ 0x134, 0, 5 },
{ 0x230, 0, 2 },
{ 0x234, 0, 3 },
{ 0x330, 0, 0 },
{ 0x334, 0, 1 }
};
/*
* I/O ports listed in the order enumerated by the
* card for certain op codes.
*/
u_int16_t aha_board_ports[] =
{
0x330,
0x334,
0x230,
0x234,
0x130,
0x134
};
/* Exported functions */
struct aha_softc *
aha_alloc(int unit, bus_space_tag_t tag, bus_space_handle_t bsh)
{
struct aha_softc *aha;
if (unit != AHA_TEMP_UNIT) {
if (unit >= NAHATOT) {
printf("aha: unit number (%d) too high\n", unit);
return NULL;
}
/*
* Allocate a storage area for us
*/
if (aha_softcs[unit]) {
printf("aha%d: memory already allocated\n", unit);
return NULL;
}
}
aha = malloc(sizeof(struct aha_softc), M_DEVBUF, M_NOWAIT);
if (!aha) {
printf("aha%d: cannot malloc!\n", unit);
return NULL;
}
bzero(aha, sizeof(struct aha_softc));
SLIST_INIT(&aha->free_aha_ccbs);
LIST_INIT(&aha->pending_ccbs);
SLIST_INIT(&aha->sg_maps);
aha->unit = unit;
aha->tag = tag;
aha->bsh = bsh;
aha->ccb_sg_opcode = INITIATOR_SG_CCB_WRESID;
aha->ccb_ccb_opcode = INITIATOR_CCB_WRESID;
if (aha->unit != AHA_TEMP_UNIT) {
aha_softcs[unit] = aha;
}
return (aha);
}
void
aha_free(struct aha_softc *aha)
{
switch (aha->init_level) {
default:
case 8:
{
struct sg_map_node *sg_map;
while ((sg_map = SLIST_FIRST(&aha->sg_maps))!= NULL) {
SLIST_REMOVE_HEAD(&aha->sg_maps, links);
bus_dmamap_unload(aha->sg_dmat,
sg_map->sg_dmamap);
bus_dmamem_free(aha->sg_dmat, sg_map->sg_vaddr,
sg_map->sg_dmamap);
free(sg_map, M_DEVBUF);
}
bus_dma_tag_destroy(aha->sg_dmat);
}
case 7:
bus_dmamap_unload(aha->ccb_dmat, aha->ccb_dmamap);
case 6:
bus_dmamap_destroy(aha->ccb_dmat, aha->ccb_dmamap);
bus_dmamem_free(aha->ccb_dmat, aha->aha_ccb_array,
aha->ccb_dmamap);
case 5:
bus_dma_tag_destroy(aha->ccb_dmat);
case 4:
bus_dmamap_unload(aha->mailbox_dmat, aha->mailbox_dmamap);
case 3:
bus_dmamem_free(aha->mailbox_dmat, aha->in_boxes,
aha->mailbox_dmamap);
bus_dmamap_destroy(aha->mailbox_dmat, aha->mailbox_dmamap);
case 2:
bus_dma_tag_destroy(aha->buffer_dmat);
case 1:
bus_dma_tag_destroy(aha->mailbox_dmat);
case 0:
}
if (aha->unit != AHA_TEMP_UNIT) {
aha_softcs[aha->unit] = NULL;
}
free(aha, M_DEVBUF);
}
/*
* Probe the adapter and verify that the card is an Adaptec.
*/
int
aha_probe(struct aha_softc* aha)
{
u_int status;
u_int intstat;
int error;
board_id_data_t board_id;
/*
* See if the three I/O ports look reasonable.
* Touch the minimal number of registers in the
* failure case.
*/
status = aha_inb(aha, STATUS_REG);
if ((status == 0)
|| (status & (DIAG_ACTIVE|CMD_REG_BUSY|
STATUS_REG_RSVD)) != 0) {
PRVERB(("%s: status reg test failed %x\n", aha_name(aha),
status));
return (ENXIO);
}
intstat = aha_inb(aha, INTSTAT_REG);
if ((intstat & INTSTAT_REG_RSVD) != 0) {
PRVERB(("%s: Failed Intstat Reg Test\n", aha_name(aha)));
return (ENXIO);
}
/*
* Looking good so far. Final test is to reset the
* adapter and fetch the board ID and ensure we aren't
* looking at a BusLogic.
*/
if ((error = ahareset(aha, /*hard_reset*/TRUE)) != 0) {
if (bootverbose)
printf("%s: Failed Reset\n", aha_name(aha));
return (ENXIO);
}
/*
* Get the board ID. We use this to see if we're dealing with
* a buslogic card or a aha card (or clone).
*/
error = aha_cmd(aha, AOP_INQUIRE_BOARD_ID, NULL, /*parmlen*/0,
(u_int8_t*)&board_id, sizeof(board_id),
DEFAULT_CMD_TIMEOUT);
if (error != 0) {
PRVERB(("%s: INQUIRE failed %x\n", aha_name(aha), error));
return (ENXIO);
}
aha->fw_major = board_id.firmware_rev_major;
aha->fw_minor = board_id.firmware_rev_minor;
aha->boardid = board_id.board_type;
/*
* The Buslogic cards have an id of either 0x41 or 0x42. So
* if those come up in the probe, we test the geometry register
* of the board. Adaptec boards that are this old will not have
* this register, and return 0xff, while buslogic cards will return
* something different.
*
* It appears that for reasons unknow, for the for the
* aha-1542B cards, we need to wait a little bit before trying
* to read the geometry register. I picked 10ms since we have
* reports that a for loop to 1000 did the trick, and this
* errs on the side of conservatism. Besides, no one will
* notice a 10mS delay here, even the 1542B card users :-)
*
* Some compatible cards return 0 here.
*
* XXX I'm not sure how this will impact other cloned cards
*
* This really should be replaced with the esetup command, since
* that appears to be more reliable.
*/
if (aha->boardid <= 0x42) {
/* Wait 10ms before reading */
DELAY(10000);
status = aha_inb(aha, GEOMETRY_REG);
if (status != 0xff && status != 0x00) {
PRVERB(("%s: Geometry Register test failed\n",
aha_name(aha)));
return (ENXIO);
}
}
return (0);
}
/*
* Pull the boards setup information and record it in our softc.
*/
int
aha_fetch_adapter_info(struct aha_softc *aha)
{
setup_data_t setup_info;
config_data_t config_data;
u_int8_t length_param;
int error;
struct aha_extbios extbios;
switch (aha->boardid) {
case BOARD_1540_16HEAD_BIOS:
snprintf(aha->model, sizeof(aha->model), "1540 16 head BIOS");
break;
case BOARD_1540_64HEAD_BIOS:
snprintf(aha->model, sizeof(aha->model), "1540 64 head BIOS");
break;
case BOARD_1542:
snprintf(aha->model, sizeof(aha->model), "1540/1542 64 head BIOS");
break;
case BOARD_1640:
snprintf(aha->model, sizeof(aha->model), "1640");
break;
case BOARD_1740:
snprintf(aha->model, sizeof(aha->model), "1740A/1742A/1744");
break;
case BOARD_1542C:
snprintf(aha->model, sizeof(aha->model), "1542C");
break;
case BOARD_1542CF:
snprintf(aha->model, sizeof(aha->model), "1542CF");
break;
case BOARD_1542CP:
snprintf(aha->model, sizeof(aha->model), "1542CP");
break;
default:
snprintf(aha->model, sizeof(aha->model), "Unknown");
break;
}
/*
* If we are a new type of 1542 board (anything newer than a 1542C)
* then disable the extended bios so that the
* mailbox interface is unlocked.
* This is also true for the 1542B Version 3.20. First Adaptec
* board that supports >1Gb drives.
* No need to check the extended bios flags as some of the
* extensions that cause us problems are not flagged in that byte.
*/
if (PROBABLY_NEW_BOARD(aha->boardid) ||
(aha->boardid == 0x41
&& aha->fw_major == 0x31 &&
aha->fw_minor >= 0x34)) {
error = aha_cmd(aha, AOP_RETURN_EXT_BIOS_INFO, NULL,
/*paramlen*/0, (u_char *)&extbios, sizeof(extbios),
DEFAULT_CMD_TIMEOUT);
error = aha_cmd(aha, AOP_MBOX_IF_ENABLE, (u_int8_t *)&extbios,
/*paramlen*/2, NULL, 0, DEFAULT_CMD_TIMEOUT);
}
if (aha->boardid < 0x41)
printf("%s: Warning: aha-1542A won't likely work.\n",
aha_name(aha));
aha->max_sg = 17; /* Need >= 17 to do 64k I/O */
aha->diff_bus = 0;
aha->extended_lun = 0;
aha->extended_trans = 0;
aha->max_ccbs = 16;
/* Determine Sync/Wide/Disc settings */
length_param = sizeof(setup_info);
error = aha_cmd(aha, AOP_INQUIRE_SETUP_INFO, &length_param,
/*paramlen*/1, (u_int8_t*)&setup_info,
sizeof(setup_info), DEFAULT_CMD_TIMEOUT);
if (error != 0) {
printf("%s: aha_fetch_adapter_info - Failed "
"Get Setup Info\n", aha_name(aha));
return (error);
}
if (setup_info.initiate_sync != 0) {
aha->sync_permitted = ALL_TARGETS;
}
aha->disc_permitted = ALL_TARGETS;
/* We need as many mailboxes as we can have ccbs */
aha->num_boxes = aha->max_ccbs;
/* Determine our SCSI ID */
error = aha_cmd(aha, AOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
(u_int8_t*)&config_data, sizeof(config_data),
DEFAULT_CMD_TIMEOUT);
if (error != 0) {
printf("%s: aha_fetch_adapter_info - Failed Get Config\n",
aha_name(aha));
return (error);
}
aha->scsi_id = config_data.scsi_id;
return (0);
}
/*
* Start the board, ready for normal operation
*/
int
aha_init(struct aha_softc* aha)
{
/* Announce the Adapter */
printf("%s: AHA-%s FW Rev. %c.%c (ID=%x) ", aha_name(aha),
aha->model, aha->fw_major, aha->fw_minor, aha->boardid);
if (aha->diff_bus != 0)
printf("Diff ");
printf("SCSI Host Adapter, SCSI ID %d, %d CCBs\n", aha->scsi_id,
aha->max_ccbs);
/*
* Create our DMA tags. These tags define the kinds of device
* accessable memory allocations and memory mappings we will
* need to perform during normal operation.
*
* Unless we need to further restrict the allocation, we rely
* on the restrictions of the parent dmat, hence the common
* use of MAXADDR and MAXSIZE.
*/
/* DMA tag for mapping buffers into device visible space. */
if (bus_dma_tag_create(aha->parent_dmat, /*alignment*/0, /*boundary*/0,
/*lowaddr*/BUS_SPACE_MAXADDR,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/MAXBSIZE, /*nsegments*/AHA_NSEG,
/*maxsegsz*/BUS_SPACE_MAXSIZE_24BIT,
/*flags*/BUS_DMA_ALLOCNOW,
&aha->buffer_dmat) != 0) {
goto error_exit;
}
aha->init_level++;
/* DMA tag for our mailboxes */
if (bus_dma_tag_create(aha->parent_dmat, /*alignment*/0, /*boundary*/0,
/*lowaddr*/BUS_SPACE_MAXADDR,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
aha->num_boxes * (sizeof(aha_mbox_in_t)
+ sizeof(aha_mbox_out_t)),
/*nsegments*/1,
/*maxsegsz*/BUS_SPACE_MAXSIZE_24BIT,
/*flags*/0, &aha->mailbox_dmat) != 0) {
goto error_exit;
}
aha->init_level++;
/* Allocation for our mailboxes */
if (bus_dmamem_alloc(aha->mailbox_dmat, (void **)&aha->out_boxes,
BUS_DMA_NOWAIT, &aha->mailbox_dmamap) != 0) {
goto error_exit;
}
aha->init_level++;
/* And permanently map them */
bus_dmamap_load(aha->mailbox_dmat, aha->mailbox_dmamap,
aha->out_boxes,
aha->num_boxes * (sizeof(aha_mbox_in_t)
+ sizeof(aha_mbox_out_t)),
ahamapmboxes, aha, /*flags*/0);
aha->init_level++;
aha->in_boxes = (aha_mbox_in_t *)&aha->out_boxes[aha->num_boxes];
ahainitmboxes(aha);
/* DMA tag for our ccb structures */
if (bus_dma_tag_create(aha->parent_dmat, /*alignment*/0, /*boundary*/0,
/*lowaddr*/BUS_SPACE_MAXADDR,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
aha->max_ccbs * sizeof(struct aha_ccb),
/*nsegments*/1,
/*maxsegsz*/BUS_SPACE_MAXSIZE_24BIT,
/*flags*/0, &aha->ccb_dmat) != 0) {
goto error_exit;
}
aha->init_level++;
/* Allocation for our ccbs */
if (bus_dmamem_alloc(aha->ccb_dmat, (void **)&aha->aha_ccb_array,
BUS_DMA_NOWAIT, &aha->ccb_dmamap) != 0) {
goto error_exit;
}
aha->init_level++;
/* And permanently map them */
bus_dmamap_load(aha->ccb_dmat, aha->ccb_dmamap,
aha->aha_ccb_array,
aha->max_ccbs * sizeof(struct aha_ccb),
ahamapccbs, aha, /*flags*/0);
aha->init_level++;
/* DMA tag for our S/G structures. We allocate in page sized chunks */
if (bus_dma_tag_create(aha->parent_dmat, /*alignment*/0, /*boundary*/0,
/*lowaddr*/BUS_SPACE_MAXADDR,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
PAGE_SIZE, /*nsegments*/1,
/*maxsegsz*/BUS_SPACE_MAXSIZE_24BIT,
/*flags*/0, &aha->sg_dmat) != 0) {
goto error_exit;
}
aha->init_level++;
/* Perform initial CCB allocation */
bzero(aha->aha_ccb_array, aha->max_ccbs * sizeof(struct aha_ccb));
ahaallocccbs(aha);
if (aha->num_ccbs == 0) {
printf("%s: aha_init - Unable to allocate initial ccbs\n",
aha_name(aha));
goto error_exit;
}
/*
* Note that we are going and return (to probe)
*/
return 0;
error_exit:
return (ENXIO);
}
int
aha_attach(struct aha_softc *aha)
{
int tagged_dev_openings;
struct cam_devq *devq;
/*
* We don't do tagged queueing, since the aha cards don't
* support it.
*/
tagged_dev_openings = 0;
/*
* Create the device queue for our SIM.
*/
devq = cam_simq_alloc(aha->max_ccbs - 1);
if (devq == NULL)
return (ENOMEM);
/*
* Construct our SIM entry
*/
aha->sim = cam_sim_alloc(ahaaction, ahapoll, "aha", aha, aha->unit,
2, tagged_dev_openings, devq);
if (aha->sim == NULL) {
cam_simq_free(devq);
return (ENOMEM);
}
if (xpt_bus_register(aha->sim, 0) != CAM_SUCCESS) {
cam_sim_free(aha->sim, /*free_devq*/TRUE);
return (ENXIO);
}
if (xpt_create_path(&aha->path, /*periph*/NULL,
cam_sim_path(aha->sim), CAM_TARGET_WILDCARD,
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
xpt_bus_deregister(cam_sim_path(aha->sim));
cam_sim_free(aha->sim, /*free_devq*/TRUE);
return (ENXIO);
}
return (0);
}
char *
aha_name(struct aha_softc *aha)
{
static char name[10];
snprintf(name, sizeof(name), "aha%d", aha->unit);
return (name);
}
int
aha_check_probed_iop(u_int ioport)
{
u_int i;
for (i=0; i < AHA_NUM_ISAPORTS; i++) {
if (aha_isa_ports[i].addr == ioport) {
if (aha_isa_ports[i].probed != 0)
return (1);
else {
return (0);
}
}
}
return (1);
}
void
aha_mark_probed_bio(isa_compat_io_t port)
{
if (port < BIO_DISABLED)
aha_mark_probed_iop(aha_board_ports[port]);
}
void
aha_mark_probed_iop(u_int ioport)
{
u_int i;
for (i = 0; i < AHA_NUM_ISAPORTS; i++) {
if (ioport == aha_isa_ports[i].addr) {
aha_isa_ports[i].probed = 1;
break;
}
}
}
void
aha_find_probe_range(int ioport, int *port_index, int *max_port_index)
{
if (ioport > 0) {
int i;
for (i = 0;i < AHA_NUM_ISAPORTS; i++)
if (ioport <= aha_isa_ports[i].addr)
break;
if ((i >= AHA_NUM_ISAPORTS)
|| (ioport != aha_isa_ports[i].addr)) {
printf("\n"
"aha_isa_probe: Invalid baseport of 0x%x specified.\n"
"aha_isa_probe: Nearest valid baseport is 0x%x.\n"
"aha_isa_probe: Failing probe.\n",
ioport,
(i < AHA_NUM_ISAPORTS)
? aha_isa_ports[i].addr
: aha_isa_ports[AHA_NUM_ISAPORTS - 1].addr);
*port_index = *max_port_index = -1;
return;
}
*port_index = *max_port_index = aha_isa_ports[i].bio;
} else {
*port_index = 0;
*max_port_index = AHA_NUM_ISAPORTS - 1;
}
}
int
aha_iop_from_bio(isa_compat_io_t bio_index)
{
if (bio_index >= 0 && bio_index < AHA_NUM_ISAPORTS)
return (aha_board_ports[bio_index]);
return (-1);
}
static void
ahaallocccbs(struct aha_softc *aha)
{
struct aha_ccb *next_ccb;
struct sg_map_node *sg_map;
bus_addr_t physaddr;
aha_sg_t *segs;
int newcount;
int i;
next_ccb = &aha->aha_ccb_array[aha->num_ccbs];
sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT);
if (sg_map == NULL)
return;
/* Allocate S/G space for the next batch of CCBS */
if (bus_dmamem_alloc(aha->sg_dmat, (void **)&sg_map->sg_vaddr,
BUS_DMA_NOWAIT, &sg_map->sg_dmamap) != 0) {
free(sg_map, M_DEVBUF);
return;
}
SLIST_INSERT_HEAD(&aha->sg_maps, sg_map, links);
bus_dmamap_load(aha->sg_dmat, sg_map->sg_dmamap, sg_map->sg_vaddr,
PAGE_SIZE, ahamapsgs, aha, /*flags*/0);
segs = sg_map->sg_vaddr;
physaddr = sg_map->sg_physaddr;
newcount = (PAGE_SIZE / (AHA_NSEG * sizeof(aha_sg_t)));
for (i = 0; aha->num_ccbs < aha->max_ccbs && i < newcount; i++) {
int error;
next_ccb->sg_list = segs;
next_ccb->sg_list_phys = physaddr;
next_ccb->flags = ACCB_FREE;
error = bus_dmamap_create(aha->buffer_dmat, /*flags*/0,
&next_ccb->dmamap);
if (error != 0)
break;
SLIST_INSERT_HEAD(&aha->free_aha_ccbs, next_ccb, links);
segs += AHA_NSEG;
physaddr += (AHA_NSEG * sizeof(aha_sg_t));
next_ccb++;
aha->num_ccbs++;
}
/* Reserve a CCB for error recovery */
if (aha->recovery_accb == NULL) {
aha->recovery_accb = SLIST_FIRST(&aha->free_aha_ccbs);
SLIST_REMOVE_HEAD(&aha->free_aha_ccbs, links);
}
}
static __inline void
ahafreeccb(struct aha_softc *aha, struct aha_ccb *accb)
{
int s;
s = splcam();
if ((accb->flags & ACCB_ACTIVE) != 0)
LIST_REMOVE(&accb->ccb->ccb_h, sim_links.le);
if (aha->resource_shortage != 0
&& (accb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
accb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
aha->resource_shortage = FALSE;
}
accb->flags = ACCB_FREE;
SLIST_INSERT_HEAD(&aha->free_aha_ccbs, accb, links);
aha->active_ccbs--;
splx(s);
}
static struct aha_ccb*
ahagetccb(struct aha_softc *aha)
{
struct aha_ccb* accb;
int s;
s = splcam();
if ((accb = SLIST_FIRST(&aha->free_aha_ccbs)) != NULL) {
SLIST_REMOVE_HEAD(&aha->free_aha_ccbs, links);
aha->active_ccbs++;
} else if (aha->num_ccbs < aha->max_ccbs) {
ahaallocccbs(aha);
accb = SLIST_FIRST(&aha->free_aha_ccbs);
if (accb == NULL)
printf("%s: Can't malloc ACCB\n", aha_name(aha));
else {
SLIST_REMOVE_HEAD(&aha->free_aha_ccbs, links);
aha->active_ccbs++;
}
}
splx(s);
return (accb);
}
static void
ahaaction(struct cam_sim *sim, union ccb *ccb)
{
struct aha_softc *aha;
CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahaaction\n"));
aha = (struct aha_softc *)cam_sim_softc(sim);
switch (ccb->ccb_h.func_code) {
/* Common cases first */
case XPT_SCSI_IO: /* Execute the requested I/O operation */
case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
{
struct aha_ccb *accb;
struct aha_hccb *hccb;
/*
* get a accb to use.
*/
if ((accb = ahagetccb(aha)) == NULL) {
int s;
s = splcam();
aha->resource_shortage = TRUE;
splx(s);
xpt_freeze_simq(aha->sim, /*count*/1);
ccb->ccb_h.status = CAM_REQUEUE_REQ;
xpt_done(ccb);
return;
}
hccb = &accb->hccb;
/*
* So we can find the ACCB when an abort is requested
*/
accb->ccb = ccb;
ccb->ccb_h.ccb_accb_ptr = accb;
ccb->ccb_h.ccb_aha_ptr = aha;
/*
* Put all the arguments for the xfer in the accb
*/
hccb->target = ccb->ccb_h.target_id;
hccb->lun = ccb->ccb_h.target_lun;
hccb->ahastat = 0;
hccb->sdstat = 0;
if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
struct ccb_scsiio *csio;
struct ccb_hdr *ccbh;
csio = &ccb->csio;
ccbh = &csio->ccb_h;
hccb->opcode = aha->ccb_ccb_opcode;
hccb->datain = (ccb->ccb_h.flags & CAM_DIR_IN) != 0;
hccb->dataout = (ccb->ccb_h.flags & CAM_DIR_OUT) != 0;
hccb->cmd_len = csio->cdb_len;
if (hccb->cmd_len > sizeof(hccb->scsi_cdb)) {
ccb->ccb_h.status = CAM_REQ_INVALID;
ahafreeccb(aha, accb);
xpt_done(ccb);
return;
}
hccb->sense_len = csio->sense_len;
if ((ccbh->flags & CAM_CDB_POINTER) != 0) {
if ((ccbh->flags & CAM_CDB_PHYS) == 0) {
bcopy(csio->cdb_io.cdb_ptr,
hccb->scsi_cdb, hccb->cmd_len);
} else {
/* I guess I could map it in... */
ccbh->status = CAM_REQ_INVALID;
ahafreeccb(aha, accb);
xpt_done(ccb);
return;
}
} else {
bcopy(csio->cdb_io.cdb_bytes,
hccb->scsi_cdb, hccb->cmd_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(
aha->buffer_dmat,
accb->dmamap,
csio->data_ptr,
csio->dxfer_len,
ahaexecuteccb,
accb,
/*flags*/0);
if (error == EINPROGRESS) {
/*
* So as to maintain
* ordering, freeze the
* controller queue
* until our mapping is
* returned.
*/
xpt_freeze_simq(aha->sim,
1);
csio->ccb_h.status |=
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;
ahaexecuteccb(accb, &seg, 1, 0);
}
} else {
struct bus_dma_segment *segs;
if ((ccbh->flags & CAM_DATA_PHYS) != 0)
panic("ahaaction - Physical "
"segment pointers "
"unsupported");
if ((ccbh->flags&CAM_SG_LIST_PHYS)==0)
panic("ahaaction - Virtual "
"segment addresses "
"unsupported");
/* Just use the segments provided */
segs = (struct bus_dma_segment *)
csio->data_ptr;
ahaexecuteccb(accb, segs,
csio->sglist_cnt, 0);
}
} else {
ahaexecuteccb(accb, NULL, 0, 0);
}
} else {
hccb->opcode = INITIATOR_BUS_DEV_RESET;
/* No data transfer */
hccb->datain = TRUE;
hccb->dataout = TRUE;
hccb->cmd_len = 0;
hccb->sense_len = 0;
ahaexecuteccb(accb, NULL, 0, 0);
}
break;
}
case XPT_EN_LUN: /* Enable LUN as a target */
case XPT_TARGET_IO: /* Execute target I/O request */
case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */
case XPT_CONT_TARGET_IO: /* Continue Host Target I/O Connection*/
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:
{
/* XXX Implement */
ccb->ccb_h.status = CAM_REQ_CMP;
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 = 0;
if ((aha->disc_permitted & target_mask) != 0)
cts->flags |= CCB_TRANS_DISC_ENB;
cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
if ((aha->sync_permitted & target_mask) != 0)
cts->sync_period = 50;
else
cts->sync_period = 0;
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;
} else {
ahafetchtransinfo(aha, cts);
}
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_CALC_GEOMETRY:
{
struct ccb_calc_geometry *ccg;
u_int32_t size_mb;
u_int32_t secs_per_cylinder;
ccg = &ccb->ccg;
size_mb = ccg->volume_size
/ ((1024L * 1024L) / ccg->block_size);
if (size_mb >= 1024 && (aha->extended_trans != 0)) {
if (size_mb >= 2048) {
ccg->heads = 255;
ccg->secs_per_track = 63;
} else {
ccg->heads = 128;
ccg->secs_per_track = 32;
}
} 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 */
{
ahareset(aha, /*hardreset*/TRUE);
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; /* XXX??? */
cpi->hba_inquiry = PI_SDTR_ABLE;
cpi->target_sprt = 0;
cpi->hba_misc = 0;
cpi->hba_eng_cnt = 0;
cpi->max_target = 7;
cpi->max_lun = 7;
cpi->initiator_id = aha->scsi_id;
cpi->bus_id = cam_sim_bus(sim);
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(cpi->hba_vid, "Adaptec", 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;
}
}
static void
ahaexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
{
struct aha_ccb *accb;
union ccb *ccb;
struct aha_softc *aha;
int s;
u_int32_t paddr;
accb = (struct aha_ccb *)arg;
ccb = accb->ccb;
aha = (struct aha_softc *)ccb->ccb_h.ccb_aha_ptr;
if (error != 0) {
if (error != EFBIG)
printf("%s: Unexepected error 0x%x returned from "
"bus_dmamap_load\n", aha_name(aha), 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;
}
ahafreeccb(aha, accb);
xpt_done(ccb);
return;
}
if (nseg != 0) {
aha_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 = accb->sg_list;
while (dm_segs < end_seg) {
ahautoa24(dm_segs->ds_len, sg->len);
ahautoa24(dm_segs->ds_addr, sg->addr);
sg++;
dm_segs++;
}
if (nseg > 1) {
accb->hccb.opcode = aha->ccb_sg_opcode;
ahautoa24((sizeof(aha_sg_t) * nseg),
accb->hccb.data_len);
ahautoa24(accb->sg_list_phys, accb->hccb.data_addr);
} else {
bcopy(accb->sg_list->len, accb->hccb.data_len, 3);
bcopy(accb->sg_list->addr, accb->hccb.data_addr, 3);
}
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
op = BUS_DMASYNC_PREREAD;
else
op = BUS_DMASYNC_PREWRITE;
bus_dmamap_sync(aha->buffer_dmat, accb->dmamap, op);
} else {
accb->hccb.opcode = INITIATOR_CCB;
ahautoa24(0, accb->hccb.data_len);
ahautoa24(0, accb->hccb.data_addr);
}
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(aha->buffer_dmat, accb->dmamap);
ahafreeccb(aha, accb);
xpt_done(ccb);
splx(s);
return;
}
accb->flags = ACCB_ACTIVE;
ccb->ccb_h.status |= CAM_SIM_QUEUED;
LIST_INSERT_HEAD(&aha->pending_ccbs, &ccb->ccb_h, sim_links.le);
ccb->ccb_h.timeout_ch =
timeout(ahatimeout, (caddr_t)accb,
(ccb->ccb_h.timeout * hz) / 1000);
/* Tell the adapter about this command */
if (aha->cur_outbox->action_code != AMBO_FREE) {
/*
* We should never encounter a busy mailbox.
* If we do, warn the user, and treat it as
* a resource shortage. If the controller is
* hung, one of the pending transactions will
* timeout causing us to start recovery operations.
*/
printf("%s: Encountered busy mailbox with %d out of %d "
"commands active!!!", aha_name(aha), aha->active_ccbs,
aha->max_ccbs);
untimeout(ahatimeout, accb, ccb->ccb_h.timeout_ch);
if (nseg != 0)
bus_dmamap_unload(aha->buffer_dmat, accb->dmamap);
ahafreeccb(aha, accb);
aha->resource_shortage = TRUE;
xpt_freeze_simq(aha->sim, /*count*/1);
ccb->ccb_h.status = CAM_REQUEUE_REQ;
xpt_done(ccb);
return;
}
paddr = ahaccbvtop(aha, accb);
ahautoa24(paddr, aha->cur_outbox->ccb_addr);
aha->cur_outbox->action_code = AMBO_START;
aha_outb(aha, COMMAND_REG, AOP_START_MBOX);
ahanextoutbox(aha);
splx(s);
}
void
aha_intr(void *arg)
{
struct aha_softc *aha;
u_int intstat;
aha = (struct aha_softc *)arg;
while (((intstat = aha_inb(aha, INTSTAT_REG)) & INTR_PENDING) != 0) {
if ((intstat & CMD_COMPLETE) != 0) {
aha->latched_status = aha_inb(aha, STATUS_REG);
aha->command_cmp = TRUE;
}
aha_outb(aha, CONTROL_REG, RESET_INTR);
if ((intstat & IMB_LOADED) != 0) {
while (aha->cur_inbox->comp_code != AMBI_FREE) {
u_int32_t paddr;
paddr = aha_a24tou(aha->cur_inbox->ccb_addr);
ahadone(aha,
ahaccbptov(aha, paddr),
aha->cur_inbox->comp_code);
aha->cur_inbox->comp_code = AMBI_FREE;
ahanextinbox(aha);
}
}
if ((intstat & SCSI_BUS_RESET) != 0) {
ahareset(aha, /*hardreset*/FALSE);
}
}
}
static void
ahadone(struct aha_softc *aha, struct aha_ccb *accb, aha_mbi_comp_code_t comp_code)
{
union ccb *ccb;
struct ccb_scsiio *csio;
ccb = accb->ccb;
csio = &accb->ccb->csio;
if ((accb->flags & ACCB_ACTIVE) == 0) {
printf("%s: ahadone - Attempt to free non-active ACCB %p\n",
aha_name(aha), (void *)accb);
return;
}
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(aha->buffer_dmat, accb->dmamap, op);
bus_dmamap_unload(aha->buffer_dmat, accb->dmamap);
}
if (accb == aha->recovery_accb) {
/*
* The recovery ACCB does not have a CCB associated
* with it, so short circuit the normal error handling.
* We now traverse our list of pending CCBs and process
* any that were terminated by the recovery CCBs action.
* We also reinstate timeouts for all remaining, pending,
* CCBs.
*/
struct cam_path *path;
struct ccb_hdr *ccb_h;
cam_status error;
/* Notify all clients that a BDR occured */
error = xpt_create_path(&path, /*periph*/NULL,
cam_sim_path(aha->sim),
accb->hccb.target,
CAM_LUN_WILDCARD);
if (error == CAM_REQ_CMP)
xpt_async(AC_SENT_BDR, path, NULL);
ccb_h = LIST_FIRST(&aha->pending_ccbs);
while (ccb_h != NULL) {
struct aha_ccb *pending_accb;
pending_accb = (struct aha_ccb *)ccb_h->ccb_accb_ptr;
if (pending_accb->hccb.target == accb->hccb.target) {
pending_accb->hccb.ahastat = AHASTAT_HA_BDR;
ccb_h = LIST_NEXT(ccb_h, sim_links.le);
ahadone(aha, pending_accb, AMBI_ERROR);
} else {
ccb_h->timeout_ch =
timeout(ahatimeout, (caddr_t)pending_accb,
(ccb_h->timeout * hz) / 1000);
ccb_h = LIST_NEXT(ccb_h, sim_links.le);
}
}
printf("%s: No longer in timeout\n", aha_name(aha));
return;
}
untimeout(ahatimeout, accb, ccb->ccb_h.timeout_ch);
switch (comp_code) {
case AMBI_FREE:
printf("%s: ahadone - CCB completed with free status!\n",
aha_name(aha));
break;
case AMBI_NOT_FOUND:
printf("%s: ahadone - CCB Abort failed to find CCB\n",
aha_name(aha));
break;
case AMBI_ABORT:
case AMBI_ERROR:
/* An error occured */
if (accb->hccb.opcode < INITIATOR_CCB_WRESID)
csio->resid = 0;
else
csio->resid = aha_a24tou(accb->hccb.data_len);
switch(accb->hccb.ahastat) {
case AHASTAT_DATARUN_ERROR:
{
if (csio->resid <= 0) {
csio->ccb_h.status = CAM_DATA_RUN_ERR;
break;
}
/* FALLTHROUGH */
}
case AHASTAT_NOERROR:
csio->scsi_status = accb->hccb.sdstat;
csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
switch(csio->scsi_status) {
case SCSI_STATUS_CHECK_COND:
case SCSI_STATUS_CMD_TERMINATED:
csio->ccb_h.status |= CAM_AUTOSNS_VALID;
/*
* The aha writes the sense data at different
* offsets based on the scsi cmd len
*/
bcopy((caddr_t) &accb->hccb.scsi_cdb +
accb->hccb.cmd_len,
(caddr_t) &csio->sense_data,
accb->hccb.sense_len);
break;
default:
break;
case SCSI_STATUS_OK:
csio->ccb_h.status = CAM_REQ_CMP;
break;
}
break;
case AHASTAT_SELTIMEOUT:
csio->ccb_h.status = CAM_SEL_TIMEOUT;
break;
case AHASTAT_UNEXPECTED_BUSFREE:
csio->ccb_h.status = CAM_UNEXP_BUSFREE;
break;
case AHASTAT_INVALID_PHASE:
csio->ccb_h.status = CAM_SEQUENCE_FAIL;
break;
case AHASTAT_INVALID_ACTION_CODE:
panic("%s: Inavlid Action code", aha_name(aha));
break;
case AHASTAT_INVALID_OPCODE:
if (accb->hccb.opcode < INITIATOR_CCB_WRESID)
panic("%s: Invalid CCB Opcode %x hccb = %p",
aha_name(aha), accb->hccb.opcode,
&accb->hccb);
printf("%s: AHA-1540A detected, compensating\n",
aha_name(aha));
aha->ccb_sg_opcode = INITIATOR_SG_CCB;
aha->ccb_ccb_opcode = INITIATOR_CCB;
xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
csio->ccb_h.status = CAM_REQUEUE_REQ;
break;
case AHASTAT_LINKED_CCB_LUN_MISMATCH:
/* We don't even support linked commands... */
panic("%s: Linked CCB Lun Mismatch", aha_name(aha));
break;
case AHASTAT_INVALID_CCB_OR_SG_PARAM:
panic("%s: Invalid CCB or SG list", aha_name(aha));
break;
case AHASTAT_HA_SCSI_BUS_RESET:
if ((csio->ccb_h.status & CAM_STATUS_MASK)
!= CAM_CMD_TIMEOUT)
csio->ccb_h.status = CAM_SCSI_BUS_RESET;
break;
case AHASTAT_HA_BDR:
if ((accb->flags & ACCB_DEVICE_RESET) == 0)
csio->ccb_h.status = CAM_BDR_SENT;
else
csio->ccb_h.status = CAM_CMD_TIMEOUT;
break;
}
if (csio->ccb_h.status != CAM_REQ_CMP) {
xpt_freeze_devq(csio->ccb_h.path, /*count*/1);
csio->ccb_h.status |= CAM_DEV_QFRZN;
}
if ((accb->flags & ACCB_RELEASE_SIMQ) != 0)
ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
ahafreeccb(aha, accb);
xpt_done(ccb);
break;
case AMBI_OK:
/* All completed without incident */
/* XXX DO WE NEED TO COPY SENSE BYTES HERE???? XXX */
/* I don't think so since it works???? */
ccb->ccb_h.status |= CAM_REQ_CMP;
if ((accb->flags & ACCB_RELEASE_SIMQ) != 0)
ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
ahafreeccb(aha, accb);
xpt_done(ccb);
break;
}
}
static int
ahareset(struct aha_softc* aha, int hard_reset)
{
struct ccb_hdr *ccb_h;
u_int status;
u_int timeout;
u_int8_t reset_type;
if (hard_reset != 0)
reset_type = HARD_RESET;
else
reset_type = SOFT_RESET;
aha_outb(aha, CONTROL_REG, reset_type);
/* Wait 5sec. for Diagnostic start */
timeout = 5 * 10000;
while (--timeout) {
status = aha_inb(aha, STATUS_REG);
if ((status & DIAG_ACTIVE) != 0)
break;
DELAY(100);
}
if (timeout == 0) {
PRVERB(("%s: ahareset - Diagnostic Active failed to "
"assert. status = 0x%x\n", aha_name(aha),
status));
return (ETIMEDOUT);
}
/* Wait 10sec. for Diagnostic end */
timeout = 10 * 10000;
while (--timeout) {
status = aha_inb(aha, STATUS_REG);
if ((status & DIAG_ACTIVE) == 0)
break;
DELAY(100);
}
if (timeout == 0) {
panic("%s: ahareset - Diagnostic Active failed to drop. "
"status = 0x%x\n", aha_name(aha), status);
return (ETIMEDOUT);
}
/* Wait for the host adapter to become ready or report a failure */
timeout = 10000;
while (--timeout) {
status = aha_inb(aha, STATUS_REG);
if ((status & (DIAG_FAIL|HA_READY|DATAIN_REG_READY)) != 0)
break;
DELAY(100);
}
if (timeout == 0) {
printf("%s: ahareset - Host adapter failed to come ready. "
"status = 0x%x\n", aha_name(aha), status);
return (ETIMEDOUT);
}
/* If the diagnostics failed, tell the user */
if ((status & DIAG_FAIL) != 0
|| (status & HA_READY) == 0) {
printf("%s: ahareset - Adapter failed diagnostics\n",
aha_name(aha));
if ((status & DATAIN_REG_READY) != 0)
printf("%s: ahareset - Host Adapter Error "
"code = 0x%x\n", aha_name(aha),
aha_inb(aha, DATAIN_REG));
return (ENXIO);
}
/* If we've allocated mailboxes, initialize them */
if (aha->init_level > 4)
ahainitmboxes(aha);
/* If we've attached to the XPT, tell it about the event */
if (aha->path != NULL)
xpt_async(AC_BUS_RESET, aha->path, NULL);
/*
* Perform completion processing for all outstanding CCBs.
*/
while ((ccb_h = LIST_FIRST(&aha->pending_ccbs)) != NULL) {
struct aha_ccb *pending_accb;
pending_accb = (struct aha_ccb *)ccb_h->ccb_accb_ptr;
pending_accb->hccb.ahastat = AHASTAT_HA_SCSI_BUS_RESET;
ahadone(aha, pending_accb, AMBI_ERROR);
}
return (0);
}
/*
* Send a command to the adapter.
*/
int
aha_cmd(struct aha_softc *aha, aha_op_t opcode, u_int8_t *params,
u_int param_len, u_int8_t *reply_data, u_int reply_len,
u_int cmd_timeout)
{
u_int timeout;
u_int status;
u_int intstat;
u_int reply_buf_size;
int s;
int cmd_complete;
/* No data returned to start */
reply_buf_size = reply_len;
reply_len = 0;
intstat = 0;
cmd_complete = 0;
aha->command_cmp = 0;
/*
* Wait up to 1 sec. for the adapter to become
* ready to accept commands.
*/
timeout = 10000;
while (--timeout) {
status = aha_inb(aha, STATUS_REG);
if ((status & HA_READY) != 0
&& (status & CMD_REG_BUSY) == 0)
break;
DELAY(100);
}
if (timeout == 0) {
printf("%s: aha_cmd: Timeout waiting for adapter ready, "
"status = 0x%x\n", aha_name(aha), status);
return (ETIMEDOUT);
}
/*
* Send the opcode followed by any necessary parameter bytes.
*/
aha_outb(aha, COMMAND_REG, opcode);
/*
* Wait for up to 1sec to get the parameter list sent
*/
timeout = 10000;
while (param_len && --timeout) {
DELAY(100);
status = aha_inb(aha, STATUS_REG);
intstat = aha_inb(aha, INTSTAT_REG);
if ((intstat & (INTR_PENDING|CMD_COMPLETE))
== (INTR_PENDING|CMD_COMPLETE)) {
cmd_complete = 1;
break;
}
if (aha->command_cmp != 0) {
status = aha->latched_status;
cmd_complete = 1;
break;
}
if ((status & DATAIN_REG_READY) != 0)
break;
if ((status & CMD_REG_BUSY) == 0) {
aha_outb(aha, COMMAND_REG, *params++);
param_len--;
}
}
if (timeout == 0) {
printf("%s: aha_cmd: Timeout sending parameters, "
"status = 0x%x\n", aha_name(aha), status);
return (ETIMEDOUT);
}
/*
* For all other commands, we wait for any output data
* and the final comand completion interrupt.
*/
while (cmd_complete == 0 && --cmd_timeout) {
status = aha_inb(aha, STATUS_REG);
intstat = aha_inb(aha, INTSTAT_REG);
if ((intstat & (INTR_PENDING|CMD_COMPLETE))
== (INTR_PENDING|CMD_COMPLETE))
break;
if (aha->command_cmp != 0) {
status = aha->latched_status;
break;
}
if ((status & DATAIN_REG_READY) != 0) {
u_int8_t data;
data = aha_inb(aha, DATAIN_REG);
if (reply_len < reply_buf_size) {
*reply_data++ = data;
} else {
printf("%s: aha_cmd - Discarded reply data byte "
"for opcode 0x%x\n", aha_name(aha),
opcode);
}
reply_len++;
}
DELAY(100);
}
if (timeout == 0) {
printf("%s: aha_cmd: Timeout waiting for reply data and "
"command complete.\n%s: status = 0x%x, intstat = 0x%x, "
"reply_len = %d\n", aha_name(aha), aha_name(aha), status,
intstat, reply_len);
return (ETIMEDOUT);
}
/*
* Clear any pending interrupts. Block interrupts so our
* interrupt handler is not re-entered.
*/
s = splcam();
aha_intr(aha);
splx(s);
/*
* If the command was rejected by the controller, tell the caller.
*/
if ((status & CMD_INVALID) != 0) {
PRVERB(("%s: Invalid Command 0x%x\n", aha_name(aha), opcode));
/*
* Some early adapters may not recover properly from
* an invalid command. If it appears that the controller
* has wedged (i.e. status was not cleared by our interrupt
* reset above), perform a soft reset.
*/
DELAY(1000);
status = aha_inb(aha, STATUS_REG);
if ((status & (CMD_INVALID|STATUS_REG_RSVD|DATAIN_REG_READY|
CMD_REG_BUSY|DIAG_FAIL|DIAG_ACTIVE)) != 0
|| (status & (HA_READY|INIT_REQUIRED))
!= (HA_READY|INIT_REQUIRED)) {
ahareset(aha, /*hard_reset*/FALSE);
}
return (EINVAL);
}
if (param_len > 0) {
/* The controller did not accept the full argument list */
return (E2BIG);
}
if (reply_len != reply_buf_size) {
/* Too much or too little data received */
return (EMSGSIZE);
}
/* We were successful */
return (0);
}
static int
ahainitmboxes(struct aha_softc *aha)
{
int error;
init_24b_mbox_params_t init_mbox;
bzero(aha->in_boxes, sizeof(aha_mbox_in_t) * aha->num_boxes);
bzero(aha->out_boxes, sizeof(aha_mbox_out_t) * aha->num_boxes);
aha->cur_inbox = aha->in_boxes;
aha->last_inbox = aha->in_boxes + aha->num_boxes - 1;
aha->cur_outbox = aha->out_boxes;
aha->last_outbox = aha->out_boxes + aha->num_boxes - 1;
/* Tell the adapter about them */
init_mbox.num_mboxes = aha->num_boxes;
ahautoa24(aha->mailbox_physbase, init_mbox.base_addr);
error = aha_cmd(aha, AOP_INITIALIZE_MBOX, (u_int8_t *)&init_mbox,
/*parmlen*/sizeof(init_mbox), /*reply_buf*/NULL,
/*reply_len*/0, DEFAULT_CMD_TIMEOUT);
if (error != 0)
printf("ahainitmboxes: Initialization command failed\n");
return (error);
}
/*
* Update the XPT's idea of the negotiated transfer
* parameters for a particular target.
*/
static void
ahafetchtransinfo(struct aha_softc *aha, struct ccb_trans_settings* cts)
{
setup_data_t setup_info;
u_int target;
u_int targ_offset;
u_int sync_period;
int error;
u_int8_t param;
targ_syncinfo_t sync_info;
target = cts->ccb_h.target_id;
targ_offset = (target & 0x7);
/*
* Inquire Setup Information. This command retreives the
* Wide negotiation status for recent adapters as well as
* the sync info for older models.
*/
param = sizeof(setup_info);
error = aha_cmd(aha, AOP_INQUIRE_SETUP_INFO, &param, /*paramlen*/1,
(u_int8_t*)&setup_info, sizeof(setup_info),
DEFAULT_CMD_TIMEOUT);
if (error != 0) {
printf("%s: ahafetchtransinfo - Inquire Setup Info Failed\n",
aha_name(aha));
return;
}
sync_info = setup_info.syncinfo[targ_offset];
if (sync_info.sync == 0)
cts->sync_offset = 0;
else
cts->sync_offset = sync_info.offset;
cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
sync_period = 2000 + (500 * sync_info.period);
/* Convert ns value to standard SCSI sync rate */
if (cts->sync_offset != 0)
cts->sync_period = scsi_calc_syncparam(sync_period);
else
cts->sync_period = 0;
cts->valid = CCB_TRANS_SYNC_RATE_VALID
| CCB_TRANS_SYNC_OFFSET_VALID
| CCB_TRANS_BUS_WIDTH_VALID;
xpt_async(AC_TRANSFER_NEG, cts->ccb_h.path, cts);
}
static void
ahamapmboxes(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
struct aha_softc* aha;
aha = (struct aha_softc*)arg;
aha->mailbox_physbase = segs->ds_addr;
}
static void
ahamapccbs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
struct aha_softc* aha;
aha = (struct aha_softc*)arg;
aha->aha_ccb_physbase = segs->ds_addr;
}
static void
ahamapsgs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
struct aha_softc* aha;
aha = (struct aha_softc*)arg;
SLIST_FIRST(&aha->sg_maps)->sg_physaddr = segs->ds_addr;
}
static void
ahapoll(struct cam_sim *sim)
{
aha_intr(cam_sim_softc(sim));
}
void
ahatimeout(void *arg)
{
struct aha_ccb *accb;
union ccb *ccb;
struct aha_softc *aha;
int s;
u_int32_t paddr;
accb = (struct aha_ccb *)arg;
ccb = accb->ccb;
aha = (struct aha_softc *)ccb->ccb_h.ccb_aha_ptr;
xpt_print_path(ccb->ccb_h.path);
printf("CCB %p - timed out\n", (void *)accb);
s = splcam();
if ((accb->flags & ACCB_ACTIVE) == 0) {
xpt_print_path(ccb->ccb_h.path);
printf("CCB %p - timed out CCB already completed\n",
(void *)accb);
splx(s);
return;
}
/*
* In order to simplify the recovery process, we ask the XPT
* layer to halt the queue of new transactions and we traverse
* the list of pending CCBs and remove their timeouts. This
* means that the driver attempts to clear only one error
* condition at a time. In general, timeouts that occur
* close together are related anyway, so there is no benefit
* in attempting to handle errors in parrallel. Timeouts will
* be reinstated when the recovery process ends.
*/
if ((accb->flags & ACCB_DEVICE_RESET) == 0) {
struct ccb_hdr *ccb_h;
if ((accb->flags & ACCB_RELEASE_SIMQ) == 0) {
xpt_freeze_simq(aha->sim, /*count*/1);
accb->flags |= ACCB_RELEASE_SIMQ;
}
ccb_h = LIST_FIRST(&aha->pending_ccbs);
while (ccb_h != NULL) {
struct aha_ccb *pending_accb;
pending_accb = (struct aha_ccb *)ccb_h->ccb_accb_ptr;
untimeout(ahatimeout, pending_accb, ccb_h->timeout_ch);
ccb_h = LIST_NEXT(ccb_h, sim_links.le);
}
}
if ((accb->flags & ACCB_DEVICE_RESET) != 0
|| aha->cur_outbox->action_code != AMBO_FREE) {
/*
* Try a full host adapter/SCSI bus reset.
* We do this only if we have already attempted
* to clear the condition with a BDR, or we cannot
* attempt a BDR for lack of mailbox resources.
*/
ccb->ccb_h.status = CAM_CMD_TIMEOUT;
ahareset(aha, /*hardreset*/TRUE);
printf("%s: No longer in timeout\n", aha_name(aha));
} else {
/*
* Send a Bus Device Reset message:
* The target that is holding up the bus may not
* be the same as the one that triggered this timeout
* (different commands have different timeout lengths),
* but we have no way of determining this from our
* timeout handler. Our strategy here is to queue a
* BDR message to the target of the timed out command.
* If this fails, we'll get another timeout 2 seconds
* later which will attempt a bus reset.
*/
accb->flags |= ACCB_DEVICE_RESET;
ccb->ccb_h.timeout_ch = timeout(ahatimeout, (caddr_t)accb, 2 * hz);
aha->recovery_accb->hccb.opcode = INITIATOR_BUS_DEV_RESET;
/* No Data Transfer */
aha->recovery_accb->hccb.datain = TRUE;
aha->recovery_accb->hccb.dataout = TRUE;
aha->recovery_accb->hccb.ahastat = 0;
aha->recovery_accb->hccb.sdstat = 0;
aha->recovery_accb->hccb.target = ccb->ccb_h.target_id;
/* Tell the adapter about this command */
paddr = ahaccbvtop(aha, aha->recovery_accb);
ahautoa24(paddr, aha->cur_outbox->ccb_addr);
aha->cur_outbox->action_code = AMBO_START;
aha_outb(aha, COMMAND_REG, AOP_START_MBOX);
ahanextoutbox(aha);
}
splx(s);
}
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