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0e87317a92
freebsd-skq/sys/dev/aha/aha.c
John Baldwin 0e87317a92 Add locking to the aha(4) driver and mark it MPSAFE. 
- Remove use of explicit bus space handles and tags.

Tested by:	no one
2012-10-15 15:59:13 +00:00

1868 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 1542A/1542B/1542C/1542CF/1542CP aha_isa.c
* aha 1640 aha_mca.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.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <machine/bus.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 <dev/aha/ahareg.h>
#define PRVERB(x) do { if (bootverbose) device_printf x; } while (0)
/* 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);
#define aha_name(aha) device_get_nameunit(aha->dev)
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 Management functions */
static __inline uint32_t ahaccbvtop(struct aha_softc *aha,
struct aha_ccb *accb);
static __inline struct aha_ccb* ahaccbptov(struct aha_softc *aha,
uint32_t ccb_addr);
static __inline uint32_t
ahaccbvtop(struct aha_softc *aha, struct aha_ccb *accb)
{
return (aha->aha_ccb_physbase
+ (uint32_t)((caddr_t)accb - (caddr_t)aha->aha_ccb_array));
}
static __inline struct aha_ccb *
ahaccbptov(struct aha_softc *aha, uint32_t ccb_addr)
{
return (aha->aha_ccb_array +
+ ((struct aha_ccb*)(uintptr_t)ccb_addr -
(struct aha_ccb*)(uintptr_t)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);
static void aha_intr_locked(struct aha_softc *aha);
/* 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 */
static void ahatimeout(void *arg);
/* Exported functions */
void
aha_alloc(struct aha_softc *aha, int unit, bus_space_tag_t tag,
bus_space_handle_t bsh)
{
SLIST_INIT(&aha->free_aha_ccbs);
LIST_INIT(&aha->pending_ccbs);
SLIST_INIT(&aha->sg_maps);
aha->ccb_sg_opcode = INITIATOR_SG_CCB_WRESID;
aha->ccb_ccb_opcode = INITIATOR_CCB_WRESID;
mtx_init(&aha->lock, "aha", NULL, MTX_DEF);
}
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:
break;
}
mtx_destroy(&aha->lock);
}
/*
* 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((aha->dev, "status reg test failed %x\n", status));
return (ENXIO);
}
intstat = aha_inb(aha, INTSTAT_REG);
if ((intstat & INTSTAT_REG_RSVD) != 0) {
PRVERB((aha->dev, "Failed Intstat Reg Test\n"));
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) {
PRVERB((aha->dev, "Failed Reset\n"));
return (ENXIO);
}
/*
* Get the board ID. We use this to see if we're dealing with
* a buslogic card or an aha card (or clone).
*/
error = aha_cmd(aha, AOP_INQUIRE_BOARD_ID, NULL, /*parmlen*/0,
(uint8_t*)&board_id, sizeof(board_id), DEFAULT_CMD_TIMEOUT);
if (error != 0) {
PRVERB((aha->dev, "INQUIRE failed %x\n", 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. Some cards also
* seem to return 0x7f.
*
* 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. This becomes more and more
* true over time as we discover more cards that don't read the
* geometry register consistantly.
*/
if (aha->boardid <= 0x42) {
/* Wait 10ms before reading */
DELAY(10000);
status = aha_inb(aha, GEOMETRY_REG);
if (status != 0xff && status != 0x00 && status != 0x7f) {
PRVERB((aha->dev, "Geometry Register test failed %#x\n",
status));
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;
uint8_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);
if (error != 0) {
device_printf(aha->dev,
"AOP_RETURN_EXT_BIOS_INFO - Failed.");
return (error);
}
error = aha_cmd(aha, AOP_MBOX_IF_ENABLE, (uint8_t *)&extbios,
/*paramlen*/2, NULL, 0, DEFAULT_CMD_TIMEOUT);
if (error != 0) {
device_printf(aha->dev, "AOP_MBOX_IF_ENABLE - Failed.");
return (error);
}
}
if (aha->boardid < 0x41)
device_printf(aha->dev, "Warning: aha-1542A won't work.\n");
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, (uint8_t*)&setup_info, sizeof(setup_info),
DEFAULT_CMD_TIMEOUT);
if (error != 0) {
device_printf(aha->dev, "aha_fetch_adapter_info - Failed "
"Get Setup Info\n");
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,
(uint8_t*)&config_data, sizeof(config_data), DEFAULT_CMD_TIMEOUT);
if (error != 0) {
device_printf(aha->dev,
"aha_fetch_adapter_info - Failed Get Config\n");
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 */
device_printf(aha->dev, "AHA-%s FW Rev. %c.%c (ID=%x) ",
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
* accessible 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( /* parent */ aha->parent_dmat,
/* alignment */ 1,
/* 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,
/* lockfunc */ busdma_lock_mutex,
/* lockarg */ &aha->lock,
&aha->buffer_dmat) != 0) {
goto error_exit;
}
aha->init_level++;
/* DMA tag for our mailboxes */
if (bus_dma_tag_create( /* parent */ aha->parent_dmat,
/* alignment */ 1,
/* boundary */ 0,
/* lowaddr */ BUS_SPACE_MAXADDR,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ NULL,
/* filterarg */ NULL,
/* maxsize */ aha->num_boxes *
(sizeof(aha_mbox_in_t) +
sizeof(aha_mbox_out_t)),
/* nsegments */ 1,
/* maxsegsz */ BUS_SPACE_MAXSIZE_24BIT,
/* flags */ 0,
/* lockfunc */ NULL,
/* lockarg */ NULL,
&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( /* parent */ aha->parent_dmat,
/* alignment */ 1,
/* boundary */ 0,
/* lowaddr */ BUS_SPACE_MAXADDR,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ NULL,
/* filterarg */ NULL,
/* maxsize */ aha->max_ccbs *
sizeof(struct aha_ccb),
/* nsegments */ 1,
/* maxsegsz */ BUS_SPACE_MAXSIZE_24BIT,
/* flags */ 0,
/* lockfunc */ NULL,
/* lockarg */ NULL,
&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( /* parent */ aha->parent_dmat,
/* alignment */ 1,
/* boundary */ 0,
/* lowaddr */ BUS_SPACE_MAXADDR,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ NULL,
/* filterarg */ NULL,
/* maxsize */ PAGE_SIZE,
/* nsegments */ 1,
/* maxsegsz */ BUS_SPACE_MAXSIZE_24BIT,
/* flags */ 0,
/* lockfunc */ NULL,
/* lockarg */ NULL,
&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) {
device_printf(aha->dev,
"aha_init - Unable to allocate initial ccbs\n");
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,
device_get_unit(aha->dev), &aha->lock, 2, tagged_dev_openings,
devq);
if (aha->sim == NULL) {
cam_simq_free(devq);
return (ENOMEM);
}
mtx_lock(&aha->lock);
if (xpt_bus_register(aha->sim, aha->dev, 0) != CAM_SUCCESS) {
cam_sim_free(aha->sim, /*free_devq*/TRUE);
mtx_unlock(&aha->lock);
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);
mtx_unlock(&aha->lock);
return (ENXIO);
}
mtx_unlock(&aha->lock);
return (0);
}
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;
callout_init_mtx(&next_ccb->timer, &aha->lock, 0);
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)
{
if (!dumping)
mtx_assert(&aha->lock, MA_OWNED);
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--;
}
static struct aha_ccb*
ahagetccb(struct aha_softc *aha)
{
struct aha_ccb* accb;
if (!dumping)
mtx_assert(&aha->lock, MA_OWNED);
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)
device_printf(aha->dev, "Can't malloc ACCB\n");
else {
SLIST_REMOVE_HEAD(&aha->free_aha_ccbs, links);
aha->active_ccbs++;
}
}
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);
mtx_assert(&aha->lock, MA_OWNED);
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 an accb to use.
*/
if ((accb = ahagetccb(aha)) == NULL) {
aha->resource_shortage = TRUE;
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 error;
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;
}
} 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_PROVIDE_FAIL;
xpt_done(ccb);
break;
case XPT_GET_TRAN_SETTINGS:
/* Get default/user set transfer settings for the target */
{
struct ccb_trans_settings *cts = &ccb->cts;
u_int target_mask = 0x01 << ccb->ccb_h.target_id;
struct ccb_trans_settings_scsi *scsi =
&cts->proto_specific.scsi;
struct ccb_trans_settings_spi *spi =
&cts->xport_specific.spi;
cts->protocol = PROTO_SCSI;
cts->protocol_version = SCSI_REV_2;
cts->transport = XPORT_SPI;
cts->transport_version = 2;
if (cts->type == CTS_TYPE_USER_SETTINGS) {
spi->flags = 0;
if ((aha->disc_permitted & target_mask) != 0)
spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
if ((aha->sync_permitted & target_mask) != 0) {
if (aha->boardid >= BOARD_1542CF)
spi->sync_period = 25;
else
spi->sync_period = 50;
} else {
spi->sync_period = 0;
}
if (spi->sync_period != 0)
spi->sync_offset = 15;
spi->valid = CTS_SPI_VALID_SYNC_RATE
| CTS_SPI_VALID_SYNC_OFFSET
| CTS_SPI_VALID_BUS_WIDTH
| CTS_SPI_VALID_DISC;
scsi->valid = CTS_SCSI_VALID_TQ;
} else {
ahafetchtransinfo(aha, cts);
}
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_CALC_GEOMETRY:
{
struct ccb_calc_geometry *ccg;
uint32_t size_mb;
uint32_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);
cpi->base_transfer_speed = 3300;
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->transport = XPORT_SPI;
cpi->transport_version = 2;
cpi->protocol = PROTO_SCSI;
cpi->protocol_version = SCSI_REV_2;
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;
uint32_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)
device_printf(aha->dev,
"Unexepected error 0x%x returned from "
"bus_dmamap_load\n", 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);
}
/*
* 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);
return;
}
accb->flags = ACCB_ACTIVE;
ccb->ccb_h.status |= CAM_SIM_QUEUED;
LIST_INSERT_HEAD(&aha->pending_ccbs, &ccb->ccb_h, sim_links.le);
callout_reset(&accb->timer, (ccb->ccb_h.timeout * hz) / 1000,
ahatimeout, accb);
/* 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.
*/
device_printf(aha->dev,
"Encountered busy mailbox with %d out of %d "
"commands active!!!", aha->active_ccbs, aha->max_ccbs);
callout_stop(&aacb->timer);
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);
}
void
aha_intr(void *arg)
{
struct aha_softc *aha;
aha = arg;
mtx_lock(&aha->lock);
aha_intr_locked(aha);
mtx_unlock(&aha->lock);
}
void
aha_intr_locked(struct aha_softc *aha)
{
u_int intstat;
uint32_t paddr;
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) {
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) {
device_printf(aha->dev,
"ahadone - Attempt to free non-active ACCB %p\n",
(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 {
callout_reset(&pending_accb->timer,
(ccb_h->timeout * hz) / 1000,
ahatimeout, pending_accb);
ccb_h = LIST_NEXT(ccb_h, sim_links.le);
}
}
device_printf(aha->dev, "No longer in timeout\n");
return;
}
callout_stop(&accb->timer);
switch (comp_code) {
case AMBI_FREE:
device_printf(aha->dev,
"ahadone - CCB completed with free status!\n");
break;
case AMBI_NOT_FOUND:
device_printf(aha->dev,
"ahadone - CCB Abort failed to find CCB\n");
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);
device_printf(aha->dev,
"AHA-1540A compensation failed\n");
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;
uint8_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((aha->dev, "ahareset - Diagnostic Active failed to "
"assert. status = %#x\n", 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) {
device_printf(aha->dev, "ahareset - Host adapter failed to "
"come ready. status = 0x%x\n", status);
return (ETIMEDOUT);
}
/* If the diagnostics failed, tell the user */
if ((status & DIAG_FAIL) != 0
|| (status & HA_READY) == 0) {
device_printf(aha->dev, "ahareset - Adapter failed diag\n");
if ((status & DATAIN_REG_READY) != 0)
device_printf(aha->dev, "ahareset - Host Adapter "
"Error code = 0x%x\n", aha_inb(aha, DATAIN_REG));
return (ENXIO);
}
/* 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);
}
/* If we've allocated mailboxes, initialize them */
/* Must be done after we've aborted our queue, or aha_cmd fails */
if (aha->init_level > 4)
ahainitmboxes(aha);
return (0);
}
/*
* Send a command to the adapter.
*/
int
aha_cmd(struct aha_softc *aha, aha_op_t opcode, uint8_t *params,
u_int param_len, uint8_t *reply_data, u_int reply_len,
u_int cmd_timeout)
{
u_int timeout;
u_int status;
u_int saved_status;
u_int intstat;
u_int reply_buf_size;
int cmd_complete;
int error;
/* No data returned to start */
reply_buf_size = reply_len;
reply_len = 0;
intstat = 0;
cmd_complete = 0;
saved_status = 0;
error = 0;
/*
* All commands except for the "start mailbox" and the "enable
* outgoing mailbox read interrupt" commands cannot be issued
* while there are pending transactions. Freeze our SIMQ
* and wait for all completions to occur if necessary.
*/
timeout = 10000;
while (LIST_FIRST(&aha->pending_ccbs) != NULL && --timeout) {
/* Fire the interrupt handler in case interrupts are blocked */
aha_intr(aha);
DELAY(10);
}
if (timeout == 0) {
device_printf(aha->dev,
"aha_cmd: Timeout waiting for adapter idle\n");
return (ETIMEDOUT);
}
aha->command_cmp = 0;
/*
* Wait up to 10 sec. for the adapter to become
* ready to accept commands.
*/
timeout = 100000;
while (--timeout) {
status = aha_inb(aha, STATUS_REG);
if ((status & HA_READY) != 0 && (status & CMD_REG_BUSY) == 0)
break;
/*
* Throw away any pending data which may be
* left over from earlier commands that we
* timedout on.
*/
if ((status & DATAIN_REG_READY) != 0)
(void)aha_inb(aha, DATAIN_REG);
DELAY(100);
}
if (timeout == 0) {
device_printf(aha->dev, "aha_cmd: Timeout waiting for adapter"
" ready, status = 0x%x\n", 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)) {
saved_status = status;
cmd_complete = 1;
break;
}
if (aha->command_cmp != 0) {
saved_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--;
timeout = 10000;
}
}
if (timeout == 0) {
device_printf(aha->dev, "aha_cmd: Timeout sending parameters, "
"status = 0x%x\n", status);
error = 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 (aha->command_cmp != 0) {
cmd_complete = 1;
saved_status = aha->latched_status;
} else if ((intstat & (INTR_PENDING|CMD_COMPLETE))
== (INTR_PENDING|CMD_COMPLETE)) {
/*
* Our poll (in case interrupts are blocked)
* saw the CMD_COMPLETE interrupt.
*/
cmd_complete = 1;
saved_status = status;
}
if ((status & DATAIN_REG_READY) != 0) {
uint8_t data;
data = aha_inb(aha, DATAIN_REG);
if (reply_len < reply_buf_size) {
*reply_data++ = data;
} else {
device_printf(aha->dev,
"aha_cmd - Discarded reply data "
"byte for opcode 0x%x\n", opcode);
}
/*
* Reset timeout to ensure at least a second
* between response bytes.
*/
cmd_timeout = MAX(cmd_timeout, 10000);
reply_len++;
}
DELAY(100);
}
if (cmd_timeout == 0) {
device_printf(aha->dev, "aha_cmd: Timeout: status = 0x%x, "
"intstat = 0x%x, reply_len = %d\n", status, intstat,
reply_len);
return (ETIMEDOUT);
}
/*
* Clear any pending interrupts. Block interrupts so our
* interrupt handler is not re-entered.
*/
aha_intr(aha);
if (error != 0)
return (error);
/*
* If the command was rejected by the controller, tell the caller.
*/
if ((saved_status & CMD_INVALID) != 0) {
PRVERB((aha->dev, "Invalid Command 0x%x\n", 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 */
PRVERB((aha->dev, "Controller did not accept full argument "
"list (%d > 0)\n", param_len));
return (E2BIG);
}
if (reply_len != reply_buf_size) {
/* Too much or too little data received */
PRVERB((aha->dev, "data received mismatch (%d != %d)\n",
reply_len, reply_buf_size));
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, (uint8_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;
uint8_t param;
targ_syncinfo_t sync_info;
struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi;
target = cts->ccb_h.target_id;
targ_offset = (target & 0x7);
/*
* Inquire Setup Information. This command retreives
* the sync info for older models.
*/
param = sizeof(setup_info);
error = aha_cmd(aha, AOP_INQUIRE_SETUP_INFO, &param, /*paramlen*/1,
(uint8_t*)&setup_info, sizeof(setup_info), DEFAULT_CMD_TIMEOUT);
if (error != 0) {
device_printf(aha->dev,
"ahafetchtransinfo - Inquire Setup Info Failed %d\n",
error);
return;
}
sync_info = setup_info.syncinfo[targ_offset];
if (sync_info.sync == 0)
spi->sync_offset = 0;
else
spi->sync_offset = sync_info.offset;
spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
if (aha->boardid >= BOARD_1542CF)
sync_period = 1000;
else
sync_period = 2000;
sync_period += 500 * sync_info.period;
/* Convert ns value to standard SCSI sync rate */
if (spi->sync_offset != 0)
spi->sync_period = scsi_calc_syncparam(sync_period);
else
spi->sync_period = 0;
spi->valid = CTS_SPI_VALID_SYNC_RATE
| CTS_SPI_VALID_SYNC_OFFSET
| CTS_SPI_VALID_BUS_WIDTH;
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_locked(cam_sim_softc(sim));
}
static void
ahatimeout(void *arg)
{
struct aha_ccb *accb;
union ccb *ccb;
struct aha_softc *aha;
uint32_t paddr;
struct ccb_hdr *ccb_h;
accb = (struct aha_ccb *)arg;
ccb = accb->ccb;
aha = (struct aha_softc *)ccb->ccb_h.ccb_aha_ptr;
mtx_assert(&aha->lock, MA_OWNED);
xpt_print_path(ccb->ccb_h.path);
printf("CCB %p - timed out\n", (void *)accb);
if ((accb->flags & ACCB_ACTIVE) == 0) {
xpt_print_path(ccb->ccb_h.path);
printf("CCB %p - timed out CCB already completed\n",
(void *)accb);
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) {
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;
callout_stop(&pending_accb->timer);
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);
device_printf(aha->dev, "No longer in timeout\n");
} 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;
callout_reset(&aacb->timer, 2 * hz, ahatimeout, accb);
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);
}
}
int
aha_detach(struct aha_softc *aha)
{
mtx_lock(&aha->lock);
xpt_async(AC_LOST_DEVICE, aha->path, NULL);
xpt_free_path(aha->path);
xpt_bus_deregister(cam_sim_path(aha->sim));
cam_sim_free(aha->sim, /*free_devq*/TRUE);
mtx_unlock(&aha->lock);
/* XXX: Drain all timers? */
return (0);
}
MODULE_DEPEND(aha, cam, 1, 1, 1);
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