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freebsd-nq/sys/dev/siis/siis.c
Alexander Motin a59641a90d Hardware supported by siis(4) allows software control over activity LEDs. 
Expose that functionality to led(4) OR-ing it with regular LED activity.
2011-01-26 08:54:10 +00:00

1895 lines
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/*-
* Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org>
* 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. 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 ``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 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/module.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/ata.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/sema.h>
#include <sys/taskqueue.h>
#include <vm/uma.h>
#include <machine/stdarg.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <dev/led/led.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include "siis.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>
/* local prototypes */
static int siis_setup_interrupt(device_t dev);
static void siis_intr(void *data);
static int siis_suspend(device_t dev);
static int siis_resume(device_t dev);
static int siis_ch_init(device_t dev);
static int siis_ch_deinit(device_t dev);
static int siis_ch_suspend(device_t dev);
static int siis_ch_resume(device_t dev);
static void siis_ch_intr_locked(void *data);
static void siis_ch_intr(void *data);
static void siis_ch_led(void *priv, int onoff);
static void siis_begin_transaction(device_t dev, union ccb *ccb);
static void siis_dmasetprd(void *arg, bus_dma_segment_t *segs, int nsegs, int error);
static void siis_execute_transaction(struct siis_slot *slot);
static void siis_timeout(struct siis_slot *slot);
static void siis_end_transaction(struct siis_slot *slot, enum siis_err_type et);
static int siis_setup_fis(device_t dev, struct siis_cmd *ctp, union ccb *ccb, int tag);
static void siis_dmainit(device_t dev);
static void siis_dmasetupc_cb(void *xsc, bus_dma_segment_t *segs, int nsegs, int error);
static void siis_dmafini(device_t dev);
static void siis_slotsalloc(device_t dev);
static void siis_slotsfree(device_t dev);
static void siis_reset(device_t dev);
static void siis_portinit(device_t dev);
static int siis_wait_ready(device_t dev, int t);
static int siis_sata_connect(struct siis_channel *ch);
static void siis_issue_read_log(device_t dev);
static void siis_process_read_log(device_t dev, union ccb *ccb);
static void siisaction(struct cam_sim *sim, union ccb *ccb);
static void siispoll(struct cam_sim *sim);
MALLOC_DEFINE(M_SIIS, "SIIS driver", "SIIS driver data buffers");
static struct {
uint32_t id;
const char *name;
int ports;
int quirks;
#define SIIS_Q_SNTF 1
#define SIIS_Q_NOMSI 2
} siis_ids[] = {
{0x31241095, "SiI3124", 4, 0},
{0x31248086, "SiI3124", 4, 0},
{0x31321095, "SiI3132", 2, SIIS_Q_SNTF|SIIS_Q_NOMSI},
{0x02421095, "SiI3132", 2, SIIS_Q_SNTF|SIIS_Q_NOMSI},
{0x02441095, "SiI3132", 2, SIIS_Q_SNTF|SIIS_Q_NOMSI},
{0x31311095, "SiI3131", 1, SIIS_Q_SNTF|SIIS_Q_NOMSI},
{0x35311095, "SiI3531", 1, SIIS_Q_SNTF|SIIS_Q_NOMSI},
{0, NULL, 0, 0}
};
static int
siis_probe(device_t dev)
{
char buf[64];
int i;
uint32_t devid = pci_get_devid(dev);
for (i = 0; siis_ids[i].id != 0; i++) {
if (siis_ids[i].id == devid) {
snprintf(buf, sizeof(buf), "%s SATA controller",
siis_ids[i].name);
device_set_desc_copy(dev, buf);
return (BUS_PROBE_VENDOR);
}
}
return (ENXIO);
}
static int
siis_attach(device_t dev)
{
struct siis_controller *ctlr = device_get_softc(dev);
uint32_t devid = pci_get_devid(dev);
device_t child;
int error, i, unit;
ctlr->dev = dev;
for (i = 0; siis_ids[i].id != 0; i++) {
if (siis_ids[i].id == devid)
break;
}
ctlr->quirks = siis_ids[i].quirks;
/* Global memory */
ctlr->r_grid = PCIR_BAR(0);
if (!(ctlr->r_gmem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&ctlr->r_grid, RF_ACTIVE)))
return (ENXIO);
ctlr->gctl = ATA_INL(ctlr->r_gmem, SIIS_GCTL);
/* Channels memory */
ctlr->r_rid = PCIR_BAR(2);
if (!(ctlr->r_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&ctlr->r_rid, RF_ACTIVE)))
return (ENXIO);
/* Setup our own memory management for channels. */
ctlr->sc_iomem.rm_start = rman_get_start(ctlr->r_mem);
ctlr->sc_iomem.rm_end = rman_get_end(ctlr->r_mem);
ctlr->sc_iomem.rm_type = RMAN_ARRAY;
ctlr->sc_iomem.rm_descr = "I/O memory addresses";
if ((error = rman_init(&ctlr->sc_iomem)) != 0) {
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem);
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_grid, ctlr->r_gmem);
return (error);
}
if ((error = rman_manage_region(&ctlr->sc_iomem,
rman_get_start(ctlr->r_mem), rman_get_end(ctlr->r_mem))) != 0) {
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem);
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_grid, ctlr->r_gmem);
rman_fini(&ctlr->sc_iomem);
return (error);
}
pci_enable_busmaster(dev);
/* Reset controller */
siis_resume(dev);
/* Number of HW channels */
ctlr->channels = siis_ids[i].ports;
/* Setup interrupts. */
if (siis_setup_interrupt(dev)) {
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem);
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_grid, ctlr->r_gmem);
rman_fini(&ctlr->sc_iomem);
return ENXIO;
}
/* Attach all channels on this controller */
for (unit = 0; unit < ctlr->channels; unit++) {
child = device_add_child(dev, "siisch", -1);
if (child == NULL)
device_printf(dev, "failed to add channel device\n");
else
device_set_ivars(child, (void *)(intptr_t)unit);
}
bus_generic_attach(dev);
return 0;
}
static int
siis_detach(device_t dev)
{
struct siis_controller *ctlr = device_get_softc(dev);
device_t *children;
int nchildren, i;
/* Detach & delete all children */
if (!device_get_children(dev, &children, &nchildren)) {
for (i = 0; i < nchildren; i++)
device_delete_child(dev, children[i]);
free(children, M_TEMP);
}
/* Free interrupts. */
if (ctlr->irq.r_irq) {
bus_teardown_intr(dev, ctlr->irq.r_irq,
ctlr->irq.handle);
bus_release_resource(dev, SYS_RES_IRQ,
ctlr->irq.r_irq_rid, ctlr->irq.r_irq);
}
pci_release_msi(dev);
/* Free memory. */
rman_fini(&ctlr->sc_iomem);
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem);
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_grid, ctlr->r_gmem);
return (0);
}
static int
siis_suspend(device_t dev)
{
struct siis_controller *ctlr = device_get_softc(dev);
bus_generic_suspend(dev);
/* Put controller into reset state. */
ctlr->gctl |= SIIS_GCTL_GRESET;
ATA_OUTL(ctlr->r_gmem, SIIS_GCTL, ctlr->gctl);
return 0;
}
static int
siis_resume(device_t dev)
{
struct siis_controller *ctlr = device_get_softc(dev);
/* Set PCIe max read request size to at least 1024 bytes */
if (pci_get_max_read_req(dev) < 1024)
pci_set_max_read_req(dev, 1024);
/* Put controller into reset state. */
ctlr->gctl |= SIIS_GCTL_GRESET;
ATA_OUTL(ctlr->r_gmem, SIIS_GCTL, ctlr->gctl);
DELAY(10000);
/* Get controller out of reset state and enable port interrupts. */
ctlr->gctl &= ~(SIIS_GCTL_GRESET | SIIS_GCTL_I2C_IE);
ctlr->gctl |= 0x0000000f;
ATA_OUTL(ctlr->r_gmem, SIIS_GCTL, ctlr->gctl);
return (bus_generic_resume(dev));
}
static int
siis_setup_interrupt(device_t dev)
{
struct siis_controller *ctlr = device_get_softc(dev);
int msi = ctlr->quirks & SIIS_Q_NOMSI ? 0 : 1;
/* Process hints. */
resource_int_value(device_get_name(dev),
device_get_unit(dev), "msi", &msi);
if (msi < 0)
msi = 0;
else if (msi > 0)
msi = min(1, pci_msi_count(dev));
/* Allocate MSI if needed/present. */
if (msi && pci_alloc_msi(dev, &msi) != 0)
msi = 0;
/* Allocate all IRQs. */
ctlr->irq.r_irq_rid = msi ? 1 : 0;
if (!(ctlr->irq.r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&ctlr->irq.r_irq_rid, RF_SHAREABLE | RF_ACTIVE))) {
device_printf(dev, "unable to map interrupt\n");
return ENXIO;
}
if ((bus_setup_intr(dev, ctlr->irq.r_irq, ATA_INTR_FLAGS, NULL,
siis_intr, ctlr, &ctlr->irq.handle))) {
/* SOS XXX release r_irq */
device_printf(dev, "unable to setup interrupt\n");
return ENXIO;
}
return (0);
}
/*
* Common case interrupt handler.
*/
static void
siis_intr(void *data)
{
struct siis_controller *ctlr = (struct siis_controller *)data;
u_int32_t is;
void *arg;
int unit;
is = ATA_INL(ctlr->r_gmem, SIIS_IS);
for (unit = 0; unit < ctlr->channels; unit++) {
if ((is & SIIS_IS_PORT(unit)) != 0 &&
(arg = ctlr->interrupt[unit].argument)) {
ctlr->interrupt[unit].function(arg);
}
}
/* Acknowledge interrupt, if MSI enabled. */
if (ctlr->irq.r_irq_rid) {
ATA_OUTL(ctlr->r_gmem, SIIS_GCTL,
ctlr->gctl | SIIS_GCTL_MSIACK);
}
}
static struct resource *
siis_alloc_resource(device_t dev, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
struct siis_controller *ctlr = device_get_softc(dev);
int unit = ((struct siis_channel *)device_get_softc(child))->unit;
struct resource *res = NULL;
int offset = unit << 13;
long st;
switch (type) {
case SYS_RES_MEMORY:
st = rman_get_start(ctlr->r_mem);
res = rman_reserve_resource(&ctlr->sc_iomem, st + offset,
st + offset + 0x2000, 0x2000, RF_ACTIVE, child);
if (res) {
bus_space_handle_t bsh;
bus_space_tag_t bst;
bsh = rman_get_bushandle(ctlr->r_mem);
bst = rman_get_bustag(ctlr->r_mem);
bus_space_subregion(bst, bsh, offset, 0x2000, &bsh);
rman_set_bushandle(res, bsh);
rman_set_bustag(res, bst);
}
break;
case SYS_RES_IRQ:
if (*rid == ATA_IRQ_RID)
res = ctlr->irq.r_irq;
break;
}
return (res);
}
static int
siis_release_resource(device_t dev, device_t child, int type, int rid,
struct resource *r)
{
switch (type) {
case SYS_RES_MEMORY:
rman_release_resource(r);
return (0);
case SYS_RES_IRQ:
if (rid != ATA_IRQ_RID)
return ENOENT;
return (0);
}
return (EINVAL);
}
static int
siis_setup_intr(device_t dev, device_t child, struct resource *irq,
int flags, driver_filter_t *filter, driver_intr_t *function,
void *argument, void **cookiep)
{
struct siis_controller *ctlr = device_get_softc(dev);
int unit = (intptr_t)device_get_ivars(child);
if (filter != NULL) {
printf("siis.c: we cannot use a filter here\n");
return (EINVAL);
}
ctlr->interrupt[unit].function = function;
ctlr->interrupt[unit].argument = argument;
return (0);
}
static int
siis_teardown_intr(device_t dev, device_t child, struct resource *irq,
void *cookie)
{
struct siis_controller *ctlr = device_get_softc(dev);
int unit = (intptr_t)device_get_ivars(child);
ctlr->interrupt[unit].function = NULL;
ctlr->interrupt[unit].argument = NULL;
return (0);
}
static int
siis_print_child(device_t dev, device_t child)
{
int retval;
retval = bus_print_child_header(dev, child);
retval += printf(" at channel %d",
(int)(intptr_t)device_get_ivars(child));
retval += bus_print_child_footer(dev, child);
return (retval);
}
static int
siis_child_location_str(device_t dev, device_t child, char *buf,
size_t buflen)
{
snprintf(buf, buflen, "channel=%d",
(int)(intptr_t)device_get_ivars(child));
return (0);
}
devclass_t siis_devclass;
static device_method_t siis_methods[] = {
DEVMETHOD(device_probe, siis_probe),
DEVMETHOD(device_attach, siis_attach),
DEVMETHOD(device_detach, siis_detach),
DEVMETHOD(device_suspend, siis_suspend),
DEVMETHOD(device_resume, siis_resume),
DEVMETHOD(bus_print_child, siis_print_child),
DEVMETHOD(bus_alloc_resource, siis_alloc_resource),
DEVMETHOD(bus_release_resource, siis_release_resource),
DEVMETHOD(bus_setup_intr, siis_setup_intr),
DEVMETHOD(bus_teardown_intr,siis_teardown_intr),
DEVMETHOD(bus_child_location_str, siis_child_location_str),
{ 0, 0 }
};
static driver_t siis_driver = {
"siis",
siis_methods,
sizeof(struct siis_controller)
};
DRIVER_MODULE(siis, pci, siis_driver, siis_devclass, 0, 0);
MODULE_VERSION(siis, 1);
MODULE_DEPEND(siis, cam, 1, 1, 1);
static int
siis_ch_probe(device_t dev)
{
device_set_desc_copy(dev, "SIIS channel");
return (0);
}
static int
siis_ch_attach(device_t dev)
{
struct siis_controller *ctlr = device_get_softc(device_get_parent(dev));
struct siis_channel *ch = device_get_softc(dev);
struct cam_devq *devq;
int rid, error, i, sata_rev = 0;
ch->dev = dev;
ch->unit = (intptr_t)device_get_ivars(dev);
ch->quirks = ctlr->quirks;
resource_int_value(device_get_name(dev),
device_get_unit(dev), "pm_level", &ch->pm_level);
resource_int_value(device_get_name(dev),
device_get_unit(dev), "sata_rev", &sata_rev);
for (i = 0; i < 16; i++) {
ch->user[i].revision = sata_rev;
ch->user[i].mode = 0;
ch->user[i].bytecount = 8192;
ch->user[i].tags = SIIS_MAX_SLOTS;
ch->curr[i] = ch->user[i];
if (ch->pm_level)
ch->user[i].caps = CTS_SATA_CAPS_H_PMREQ;
}
mtx_init(&ch->mtx, "SIIS channel lock", NULL, MTX_DEF);
rid = ch->unit;
if (!(ch->r_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&rid, RF_ACTIVE)))
return (ENXIO);
siis_dmainit(dev);
siis_slotsalloc(dev);
siis_ch_init(dev);
mtx_lock(&ch->mtx);
rid = ATA_IRQ_RID;
if (!(ch->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&rid, RF_SHAREABLE | RF_ACTIVE))) {
device_printf(dev, "Unable to map interrupt\n");
error = ENXIO;
goto err0;
}
if ((bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS, NULL,
siis_ch_intr_locked, dev, &ch->ih))) {
device_printf(dev, "Unable to setup interrupt\n");
error = ENXIO;
goto err1;
}
/* Create the device queue for our SIM. */
devq = cam_simq_alloc(SIIS_MAX_SLOTS);
if (devq == NULL) {
device_printf(dev, "Unable to allocate simq\n");
error = ENOMEM;
goto err1;
}
/* Construct SIM entry */
ch->sim = cam_sim_alloc(siisaction, siispoll, "siisch", ch,
device_get_unit(dev), &ch->mtx, 2, SIIS_MAX_SLOTS, devq);
if (ch->sim == NULL) {
cam_simq_free(devq);
device_printf(dev, "unable to allocate sim\n");
error = ENOMEM;
goto err1;
}
if (xpt_bus_register(ch->sim, dev, 0) != CAM_SUCCESS) {
device_printf(dev, "unable to register xpt bus\n");
error = ENXIO;
goto err2;
}
if (xpt_create_path(&ch->path, /*periph*/NULL, cam_sim_path(ch->sim),
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
device_printf(dev, "unable to create path\n");
error = ENXIO;
goto err3;
}
mtx_unlock(&ch->mtx);
ch->led = led_create(siis_ch_led, dev, device_get_nameunit(dev));
return (0);
err3:
xpt_bus_deregister(cam_sim_path(ch->sim));
err2:
cam_sim_free(ch->sim, /*free_devq*/TRUE);
err1:
bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq);
err0:
bus_release_resource(dev, SYS_RES_MEMORY, ch->unit, ch->r_mem);
mtx_unlock(&ch->mtx);
mtx_destroy(&ch->mtx);
return (error);
}
static int
siis_ch_detach(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
led_destroy(ch->led);
mtx_lock(&ch->mtx);
xpt_async(AC_LOST_DEVICE, ch->path, NULL);
xpt_free_path(ch->path);
xpt_bus_deregister(cam_sim_path(ch->sim));
cam_sim_free(ch->sim, /*free_devq*/TRUE);
mtx_unlock(&ch->mtx);
bus_teardown_intr(dev, ch->r_irq, ch->ih);
bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq);
siis_ch_deinit(dev);
siis_slotsfree(dev);
siis_dmafini(dev);
bus_release_resource(dev, SYS_RES_MEMORY, ch->unit, ch->r_mem);
mtx_destroy(&ch->mtx);
return (0);
}
static int
siis_ch_init(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
/* Get port out of reset state. */
ATA_OUTL(ch->r_mem, SIIS_P_CTLCLR, SIIS_P_CTL_PORT_RESET);
ATA_OUTL(ch->r_mem, SIIS_P_CTLCLR, SIIS_P_CTL_32BIT);
if (ch->pm_present)
ATA_OUTL(ch->r_mem, SIIS_P_CTLSET, SIIS_P_CTL_PME);
else
ATA_OUTL(ch->r_mem, SIIS_P_CTLCLR, SIIS_P_CTL_PME);
/* Enable port interrupts */
ATA_OUTL(ch->r_mem, SIIS_P_IESET, SIIS_P_IX_ENABLED);
return (0);
}
static int
siis_ch_deinit(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
/* Put port into reset state. */
ATA_OUTL(ch->r_mem, SIIS_P_CTLSET, SIIS_P_CTL_PORT_RESET);
return (0);
}
static int
siis_ch_suspend(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
mtx_lock(&ch->mtx);
xpt_freeze_simq(ch->sim, 1);
while (ch->oslots)
msleep(ch, &ch->mtx, PRIBIO, "siissusp", hz/100);
siis_ch_deinit(dev);
mtx_unlock(&ch->mtx);
return (0);
}
static int
siis_ch_resume(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
mtx_lock(&ch->mtx);
siis_ch_init(dev);
siis_reset(dev);
xpt_release_simq(ch->sim, TRUE);
mtx_unlock(&ch->mtx);
return (0);
}
devclass_t siisch_devclass;
static device_method_t siisch_methods[] = {
DEVMETHOD(device_probe, siis_ch_probe),
DEVMETHOD(device_attach, siis_ch_attach),
DEVMETHOD(device_detach, siis_ch_detach),
DEVMETHOD(device_suspend, siis_ch_suspend),
DEVMETHOD(device_resume, siis_ch_resume),
{ 0, 0 }
};
static driver_t siisch_driver = {
"siisch",
siisch_methods,
sizeof(struct siis_channel)
};
DRIVER_MODULE(siisch, siis, siisch_driver, siis_devclass, 0, 0);
static void
siis_ch_led(void *priv, int onoff)
{
device_t dev;
struct siis_channel *ch;
dev = (device_t)priv;
ch = device_get_softc(dev);
if (onoff == 0)
ATA_OUTL(ch->r_mem, SIIS_P_CTLCLR, SIIS_P_CTL_LED_ON);
else
ATA_OUTL(ch->r_mem, SIIS_P_CTLSET, SIIS_P_CTL_LED_ON);
}
struct siis_dc_cb_args {
bus_addr_t maddr;
int error;
};
static void
siis_dmainit(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
struct siis_dc_cb_args dcba;
/* Command area. */
if (bus_dma_tag_create(bus_get_dma_tag(dev), 1024, 0,
BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
NULL, NULL, SIIS_WORK_SIZE, 1, SIIS_WORK_SIZE,
0, NULL, NULL, &ch->dma.work_tag))
goto error;
if (bus_dmamem_alloc(ch->dma.work_tag, (void **)&ch->dma.work, 0,
&ch->dma.work_map))
goto error;
if (bus_dmamap_load(ch->dma.work_tag, ch->dma.work_map, ch->dma.work,
SIIS_WORK_SIZE, siis_dmasetupc_cb, &dcba, 0) || dcba.error) {
bus_dmamem_free(ch->dma.work_tag, ch->dma.work, ch->dma.work_map);
goto error;
}
ch->dma.work_bus = dcba.maddr;
/* Data area. */
if (bus_dma_tag_create(bus_get_dma_tag(dev), 1, 0,
BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
NULL, NULL,
SIIS_SG_ENTRIES * PAGE_SIZE * SIIS_MAX_SLOTS,
SIIS_SG_ENTRIES, 0xFFFFFFFF,
0, busdma_lock_mutex, &ch->mtx, &ch->dma.data_tag)) {
goto error;
}
return;
error:
device_printf(dev, "WARNING - DMA initialization failed\n");
siis_dmafini(dev);
}
static void
siis_dmasetupc_cb(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
{
struct siis_dc_cb_args *dcba = (struct siis_dc_cb_args *)xsc;
if (!(dcba->error = error))
dcba->maddr = segs[0].ds_addr;
}
static void
siis_dmafini(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
if (ch->dma.data_tag) {
bus_dma_tag_destroy(ch->dma.data_tag);
ch->dma.data_tag = NULL;
}
if (ch->dma.work_bus) {
bus_dmamap_unload(ch->dma.work_tag, ch->dma.work_map);
bus_dmamem_free(ch->dma.work_tag, ch->dma.work, ch->dma.work_map);
ch->dma.work_bus = 0;
ch->dma.work_map = NULL;
ch->dma.work = NULL;
}
if (ch->dma.work_tag) {
bus_dma_tag_destroy(ch->dma.work_tag);
ch->dma.work_tag = NULL;
}
}
static void
siis_slotsalloc(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
int i;
/* Alloc and setup command/dma slots */
bzero(ch->slot, sizeof(ch->slot));
for (i = 0; i < SIIS_MAX_SLOTS; i++) {
struct siis_slot *slot = &ch->slot[i];
slot->dev = dev;
slot->slot = i;
slot->state = SIIS_SLOT_EMPTY;
slot->ccb = NULL;
callout_init_mtx(&slot->timeout, &ch->mtx, 0);
if (bus_dmamap_create(ch->dma.data_tag, 0, &slot->dma.data_map))
device_printf(ch->dev, "FAILURE - create data_map\n");
}
}
static void
siis_slotsfree(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
int i;
/* Free all dma slots */
for (i = 0; i < SIIS_MAX_SLOTS; i++) {
struct siis_slot *slot = &ch->slot[i];
callout_drain(&slot->timeout);
if (slot->dma.data_map) {
bus_dmamap_destroy(ch->dma.data_tag, slot->dma.data_map);
slot->dma.data_map = NULL;
}
}
}
static void
siis_notify_events(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
struct cam_path *dpath;
u_int32_t status;
int i;
if (ch->quirks & SIIS_Q_SNTF) {
status = ATA_INL(ch->r_mem, SIIS_P_SNTF);
ATA_OUTL(ch->r_mem, SIIS_P_SNTF, status);
} else {
/*
* Without SNTF we have no idea which device sent notification.
* If PMP is connected, assume it, else - device.
*/
status = (ch->pm_present) ? 0x8000 : 0x0001;
}
if (bootverbose)
device_printf(dev, "SNTF 0x%04x\n", status);
for (i = 0; i < 16; i++) {
if ((status & (1 << i)) == 0)
continue;
if (xpt_create_path(&dpath, NULL,
xpt_path_path_id(ch->path), i, 0) == CAM_REQ_CMP) {
xpt_async(AC_SCSI_AEN, dpath, NULL);
xpt_free_path(dpath);
}
}
}
static void
siis_phy_check_events(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
/* If we have a connection event, deal with it */
if (ch->pm_level == 0) {
u_int32_t status = ATA_INL(ch->r_mem, SIIS_P_SSTS);
union ccb *ccb;
if (bootverbose) {
if (((status & ATA_SS_DET_MASK) == ATA_SS_DET_PHY_ONLINE) &&
((status & ATA_SS_SPD_MASK) != ATA_SS_SPD_NO_SPEED) &&
((status & ATA_SS_IPM_MASK) == ATA_SS_IPM_ACTIVE)) {
device_printf(dev, "CONNECT requested\n");
} else
device_printf(dev, "DISCONNECT requested\n");
}
siis_reset(dev);
if ((ccb = xpt_alloc_ccb_nowait()) == NULL)
return;
if (xpt_create_path(&ccb->ccb_h.path, NULL,
cam_sim_path(ch->sim),
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
xpt_free_ccb(ccb);
return;
}
xpt_rescan(ccb);
}
}
static void
siis_ch_intr_locked(void *data)
{
device_t dev = (device_t)data;
struct siis_channel *ch = device_get_softc(dev);
mtx_lock(&ch->mtx);
siis_ch_intr(data);
mtx_unlock(&ch->mtx);
}
static void
siis_ch_intr(void *data)
{
device_t dev = (device_t)data;
struct siis_channel *ch = device_get_softc(dev);
uint32_t istatus, sstatus, ctx, estatus, ok, err = 0;
enum siis_err_type et;
int i, ccs, port, tslots;
mtx_assert(&ch->mtx, MA_OWNED);
/* Read command statuses. */
sstatus = ATA_INL(ch->r_mem, SIIS_P_SS);
ok = ch->rslots & ~sstatus;
/* Complete all successfull commands. */
for (i = 0; i < SIIS_MAX_SLOTS; i++) {
if ((ok >> i) & 1)
siis_end_transaction(&ch->slot[i], SIIS_ERR_NONE);
}
/* Do we have any other events? */
if ((sstatus & SIIS_P_SS_ATTN) == 0)
return;
/* Read and clear interrupt statuses. */
istatus = ATA_INL(ch->r_mem, SIIS_P_IS) &
(0xFFFF & ~SIIS_P_IX_COMMCOMP);
ATA_OUTL(ch->r_mem, SIIS_P_IS, istatus);
/* Process PHY events */
if (istatus & SIIS_P_IX_PHYRDYCHG)
siis_phy_check_events(dev);
/* Process NOTIFY events */
if (istatus & SIIS_P_IX_SDBN)
siis_notify_events(dev);
/* Process command errors */
if (istatus & SIIS_P_IX_COMMERR) {
estatus = ATA_INL(ch->r_mem, SIIS_P_CMDERR);
ctx = ATA_INL(ch->r_mem, SIIS_P_CTX);
ccs = (ctx & SIIS_P_CTX_SLOT) >> SIIS_P_CTX_SLOT_SHIFT;
port = (ctx & SIIS_P_CTX_PMP) >> SIIS_P_CTX_PMP_SHIFT;
err = ch->rslots & sstatus;
//device_printf(dev, "%s ERROR ss %08x is %08x rs %08x es %d act %d port %d serr %08x\n",
// __func__, sstatus, istatus, ch->rslots, estatus, ccs, port,
// ATA_INL(ch->r_mem, SIIS_P_SERR));
if (!ch->readlog && !ch->recovery) {
xpt_freeze_simq(ch->sim, ch->numrslots);
ch->recovery = 1;
}
if (ch->frozen) {
union ccb *fccb = ch->frozen;
ch->frozen = NULL;
fccb->ccb_h.status &= ~CAM_STATUS_MASK;
fccb->ccb_h.status |= CAM_REQUEUE_REQ | CAM_RELEASE_SIMQ;
if (!(fccb->ccb_h.status & CAM_DEV_QFRZN)) {
xpt_freeze_devq(fccb->ccb_h.path, 1);
fccb->ccb_h.status |= CAM_DEV_QFRZN;
}
xpt_done(fccb);
}
if (estatus == SIIS_P_CMDERR_DEV ||
estatus == SIIS_P_CMDERR_SDB ||
estatus == SIIS_P_CMDERR_DATAFIS) {
tslots = ch->numtslots[port];
for (i = 0; i < SIIS_MAX_SLOTS; i++) {
/* XXX: requests in loading state. */
if (((ch->rslots >> i) & 1) == 0)
continue;
if (ch->slot[i].ccb->ccb_h.target_id != port)
continue;
if (tslots == 0) {
/* Untagged operation. */
if (i == ccs)
et = SIIS_ERR_TFE;
else
et = SIIS_ERR_INNOCENT;
} else {
/* Tagged operation. */
et = SIIS_ERR_NCQ;
}
siis_end_transaction(&ch->slot[i], et);
}
/*
* We can't reinit port if there are some other
* commands active, use resume to complete them.
*/
if (ch->rslots != 0)
ATA_OUTL(ch->r_mem, SIIS_P_CTLSET, SIIS_P_CTL_RESUME);
} else {
if (estatus == SIIS_P_CMDERR_SENDFIS ||
estatus == SIIS_P_CMDERR_INCSTATE ||
estatus == SIIS_P_CMDERR_PPE ||
estatus == SIIS_P_CMDERR_SERVICE) {
et = SIIS_ERR_SATA;
} else
et = SIIS_ERR_INVALID;
for (i = 0; i < SIIS_MAX_SLOTS; i++) {
/* XXX: requests in loading state. */
if (((ch->rslots >> i) & 1) == 0)
continue;
siis_end_transaction(&ch->slot[i], et);
}
}
}
}
/* Must be called with channel locked. */
static int
siis_check_collision(device_t dev, union ccb *ccb)
{
struct siis_channel *ch = device_get_softc(dev);
mtx_assert(&ch->mtx, MA_OWNED);
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_FPDMA)) {
/* Tagged command while we have no supported tag free. */
if (((~ch->oslots) & (0x7fffffff >> (31 -
ch->curr[ccb->ccb_h.target_id].tags))) == 0)
return (1);
}
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & (CAM_ATAIO_CONTROL | CAM_ATAIO_NEEDRESULT))) {
/* Atomic command while anything active. */
if (ch->numrslots != 0)
return (1);
}
/* We have some atomic command running. */
if (ch->aslots != 0)
return (1);
return (0);
}
/* Must be called with channel locked. */
static void
siis_begin_transaction(device_t dev, union ccb *ccb)
{
struct siis_channel *ch = device_get_softc(dev);
struct siis_slot *slot;
int tag, tags;
mtx_assert(&ch->mtx, MA_OWNED);
/* Choose empty slot. */
tags = SIIS_MAX_SLOTS;
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_FPDMA))
tags = ch->curr[ccb->ccb_h.target_id].tags;
tag = fls((~ch->oslots) & (0x7fffffff >> (31 - tags))) - 1;
/* Occupy chosen slot. */
slot = &ch->slot[tag];
slot->ccb = ccb;
/* Update channel stats. */
ch->oslots |= (1 << slot->slot);
ch->numrslots++;
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_FPDMA)) {
ch->numtslots[ccb->ccb_h.target_id]++;
}
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & (CAM_ATAIO_CONTROL | CAM_ATAIO_NEEDRESULT)))
ch->aslots |= (1 << slot->slot);
slot->dma.nsegs = 0;
/* If request moves data, setup and load SG list */
if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
void *buf;
bus_size_t size;
slot->state = SIIS_SLOT_LOADING;
if (ccb->ccb_h.func_code == XPT_ATA_IO) {
buf = ccb->ataio.data_ptr;
size = ccb->ataio.dxfer_len;
} else {
buf = ccb->csio.data_ptr;
size = ccb->csio.dxfer_len;
}
bus_dmamap_load(ch->dma.data_tag, slot->dma.data_map,
buf, size, siis_dmasetprd, slot, 0);
} else
siis_execute_transaction(slot);
}
/* Locked by busdma engine. */
static void
siis_dmasetprd(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
{
struct siis_slot *slot = arg;
struct siis_channel *ch = device_get_softc(slot->dev);
struct siis_cmd *ctp;
struct siis_dma_prd *prd;
int i;
mtx_assert(&ch->mtx, MA_OWNED);
if (error) {
device_printf(slot->dev, "DMA load error\n");
if (!ch->readlog)
xpt_freeze_simq(ch->sim, 1);
siis_end_transaction(slot, SIIS_ERR_INVALID);
return;
}
KASSERT(nsegs <= SIIS_SG_ENTRIES, ("too many DMA segment entries\n"));
/* Get a piece of the workspace for this request */
ctp = (struct siis_cmd *)
(ch->dma.work + SIIS_CT_OFFSET + (SIIS_CT_SIZE * slot->slot));
/* Fill S/G table */
if (slot->ccb->ccb_h.func_code == XPT_ATA_IO)
prd = &ctp->u.ata.prd[0];
else
prd = &ctp->u.atapi.prd[0];
for (i = 0; i < nsegs; i++) {
prd[i].dba = htole64(segs[i].ds_addr);
prd[i].dbc = htole32(segs[i].ds_len);
prd[i].control = 0;
}
prd[nsegs - 1].control = htole32(SIIS_PRD_TRM);
slot->dma.nsegs = nsegs;
bus_dmamap_sync(ch->dma.data_tag, slot->dma.data_map,
((slot->ccb->ccb_h.flags & CAM_DIR_IN) ?
BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE));
siis_execute_transaction(slot);
}
/* Must be called with channel locked. */
static void
siis_execute_transaction(struct siis_slot *slot)
{
device_t dev = slot->dev;
struct siis_channel *ch = device_get_softc(dev);
struct siis_cmd *ctp;
union ccb *ccb = slot->ccb;
u_int64_t prb_bus;
mtx_assert(&ch->mtx, MA_OWNED);
/* Get a piece of the workspace for this request */
ctp = (struct siis_cmd *)
(ch->dma.work + SIIS_CT_OFFSET + (SIIS_CT_SIZE * slot->slot));
ctp->control = 0;
ctp->protocol_override = 0;
ctp->transfer_count = 0;
/* Special handling for Soft Reset command. */
if (ccb->ccb_h.func_code == XPT_ATA_IO) {
if (ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL) {
ctp->control |= htole16(SIIS_PRB_SOFT_RESET);
} else {
ctp->control |= htole16(SIIS_PRB_PROTOCOL_OVERRIDE);
if (ccb->ataio.cmd.flags & CAM_ATAIO_FPDMA) {
ctp->protocol_override |=
htole16(SIIS_PRB_PROTO_NCQ);
}
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
ctp->protocol_override |=
htole16(SIIS_PRB_PROTO_READ);
} else
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
ctp->protocol_override |=
htole16(SIIS_PRB_PROTO_WRITE);
}
}
} else if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
ctp->control |= htole16(SIIS_PRB_PACKET_READ);
else
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
ctp->control |= htole16(SIIS_PRB_PACKET_WRITE);
}
/* Special handling for Soft Reset command. */
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL) &&
(ccb->ataio.cmd.control & ATA_A_RESET)) {
/* Kick controller into sane state */
siis_portinit(dev);
}
/* Setup the FIS for this request */
if (!siis_setup_fis(dev, ctp, ccb, slot->slot)) {
device_printf(ch->dev, "Setting up SATA FIS failed\n");
if (!ch->readlog)
xpt_freeze_simq(ch->sim, 1);
siis_end_transaction(slot, SIIS_ERR_INVALID);
return;
}
bus_dmamap_sync(ch->dma.work_tag, ch->dma.work_map,
BUS_DMASYNC_PREWRITE);
/* Issue command to the controller. */
slot->state = SIIS_SLOT_RUNNING;
ch->rslots |= (1 << slot->slot);
prb_bus = ch->dma.work_bus +
SIIS_CT_OFFSET + (SIIS_CT_SIZE * slot->slot);
ATA_OUTL(ch->r_mem, SIIS_P_CACTL(slot->slot), prb_bus);
ATA_OUTL(ch->r_mem, SIIS_P_CACTH(slot->slot), prb_bus >> 32);
/* Start command execution timeout */
callout_reset(&slot->timeout, (int)ccb->ccb_h.timeout * hz / 1000,
(timeout_t*)siis_timeout, slot);
return;
}
/* Must be called with channel locked. */
static void
siis_process_timeout(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
int i;
mtx_assert(&ch->mtx, MA_OWNED);
if (!ch->readlog && !ch->recovery) {
xpt_freeze_simq(ch->sim, ch->numrslots);
ch->recovery = 1;
}
/* Handle the rest of commands. */
for (i = 0; i < SIIS_MAX_SLOTS; i++) {
/* Do we have a running request on slot? */
if (ch->slot[i].state < SIIS_SLOT_RUNNING)
continue;
siis_end_transaction(&ch->slot[i], SIIS_ERR_TIMEOUT);
}
}
/* Must be called with channel locked. */
static void
siis_rearm_timeout(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
int i;
mtx_assert(&ch->mtx, MA_OWNED);
for (i = 0; i < SIIS_MAX_SLOTS; i++) {
struct siis_slot *slot = &ch->slot[i];
/* Do we have a running request on slot? */
if (slot->state < SIIS_SLOT_RUNNING)
continue;
if ((ch->toslots & (1 << i)) == 0)
continue;
callout_reset(&slot->timeout,
(int)slot->ccb->ccb_h.timeout * hz / 1000,
(timeout_t*)siis_timeout, slot);
}
}
/* Locked by callout mechanism. */
static void
siis_timeout(struct siis_slot *slot)
{
device_t dev = slot->dev;
struct siis_channel *ch = device_get_softc(dev);
mtx_assert(&ch->mtx, MA_OWNED);
/* Check for stale timeout. */
if (slot->state < SIIS_SLOT_RUNNING)
return;
device_printf(dev, "Timeout on slot %d\n", slot->slot);
device_printf(dev, "%s is %08x ss %08x rs %08x es %08x sts %08x serr %08x\n",
__func__, ATA_INL(ch->r_mem, SIIS_P_IS),
ATA_INL(ch->r_mem, SIIS_P_SS), ch->rslots,
ATA_INL(ch->r_mem, SIIS_P_CMDERR), ATA_INL(ch->r_mem, SIIS_P_STS),
ATA_INL(ch->r_mem, SIIS_P_SERR));
if (ch->toslots == 0)
xpt_freeze_simq(ch->sim, 1);
ch->toslots |= (1 << slot->slot);
if ((ch->rslots & ~ch->toslots) == 0)
siis_process_timeout(dev);
else
device_printf(dev, " ... waiting for slots %08x\n",
ch->rslots & ~ch->toslots);
}
/* Must be called with channel locked. */
static void
siis_end_transaction(struct siis_slot *slot, enum siis_err_type et)
{
device_t dev = slot->dev;
struct siis_channel *ch = device_get_softc(dev);
union ccb *ccb = slot->ccb;
int lastto;
mtx_assert(&ch->mtx, MA_OWNED);
bus_dmamap_sync(ch->dma.work_tag, ch->dma.work_map,
BUS_DMASYNC_POSTWRITE);
/* Read result registers to the result struct
* May be incorrect if several commands finished same time,
* so read only when sure or have to.
*/
if (ccb->ccb_h.func_code == XPT_ATA_IO) {
struct ata_res *res = &ccb->ataio.res;
if ((et == SIIS_ERR_TFE) ||
(ccb->ataio.cmd.flags & CAM_ATAIO_NEEDRESULT)) {
int offs = SIIS_P_LRAM_SLOT(slot->slot) + 8;
res->status = ATA_INB(ch->r_mem, offs + 2);
res->error = ATA_INB(ch->r_mem, offs + 3);
res->lba_low = ATA_INB(ch->r_mem, offs + 4);
res->lba_mid = ATA_INB(ch->r_mem, offs + 5);
res->lba_high = ATA_INB(ch->r_mem, offs + 6);
res->device = ATA_INB(ch->r_mem, offs + 7);
res->lba_low_exp = ATA_INB(ch->r_mem, offs + 8);
res->lba_mid_exp = ATA_INB(ch->r_mem, offs + 9);
res->lba_high_exp = ATA_INB(ch->r_mem, offs + 10);
res->sector_count = ATA_INB(ch->r_mem, offs + 12);
res->sector_count_exp = ATA_INB(ch->r_mem, offs + 13);
} else
bzero(res, sizeof(*res));
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN &&
ch->numrslots == 1) {
ccb->ataio.resid = ccb->ataio.dxfer_len -
ATA_INL(ch->r_mem, SIIS_P_LRAM_SLOT(slot->slot) + 4);
}
} else {
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN &&
ch->numrslots == 1) {
ccb->csio.resid = ccb->csio.dxfer_len -
ATA_INL(ch->r_mem, SIIS_P_LRAM_SLOT(slot->slot) + 4);
}
}
if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
bus_dmamap_sync(ch->dma.data_tag, slot->dma.data_map,
(ccb->ccb_h.flags & CAM_DIR_IN) ?
BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ch->dma.data_tag, slot->dma.data_map);
}
/* Set proper result status. */
if (et != SIIS_ERR_NONE || ch->recovery) {
ch->eslots |= (1 << slot->slot);
ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
}
/* In case of error, freeze device for proper recovery. */
if (et != SIIS_ERR_NONE &&
!(ccb->ccb_h.status & CAM_DEV_QFRZN)) {
xpt_freeze_devq(ccb->ccb_h.path, 1);
ccb->ccb_h.status |= CAM_DEV_QFRZN;
}
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
switch (et) {
case SIIS_ERR_NONE:
ccb->ccb_h.status |= CAM_REQ_CMP;
if (ccb->ccb_h.func_code == XPT_SCSI_IO)
ccb->csio.scsi_status = SCSI_STATUS_OK;
break;
case SIIS_ERR_INVALID:
ch->fatalerr = 1;
ccb->ccb_h.status |= CAM_REQ_INVALID;
break;
case SIIS_ERR_INNOCENT:
ccb->ccb_h.status |= CAM_REQUEUE_REQ;
break;
case SIIS_ERR_TFE:
case SIIS_ERR_NCQ:
if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
} else {
ccb->ccb_h.status |= CAM_ATA_STATUS_ERROR;
}
break;
case SIIS_ERR_SATA:
ch->fatalerr = 1;
ccb->ccb_h.status |= CAM_UNCOR_PARITY;
break;
case SIIS_ERR_TIMEOUT:
ch->fatalerr = 1;
ccb->ccb_h.status |= CAM_CMD_TIMEOUT;
break;
default:
ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
}
/* Free slot. */
ch->oslots &= ~(1 << slot->slot);
ch->rslots &= ~(1 << slot->slot);
ch->aslots &= ~(1 << slot->slot);
slot->state = SIIS_SLOT_EMPTY;
slot->ccb = NULL;
/* Update channel stats. */
ch->numrslots--;
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_FPDMA)) {
ch->numtslots[ccb->ccb_h.target_id]--;
}
/* Cancel timeout state if request completed normally. */
if (et != SIIS_ERR_TIMEOUT) {
lastto = (ch->toslots == (1 << slot->slot));
ch->toslots &= ~(1 << slot->slot);
if (lastto)
xpt_release_simq(ch->sim, TRUE);
}
/* If it was our READ LOG command - process it. */
if (ch->readlog) {
siis_process_read_log(dev, ccb);
/* If it was NCQ command error, put result on hold. */
} else if (et == SIIS_ERR_NCQ) {
ch->hold[slot->slot] = ccb;
ch->numhslots++;
} else
xpt_done(ccb);
/* Unfreeze frozen command. */
if (ch->frozen && !siis_check_collision(dev, ch->frozen)) {
union ccb *fccb = ch->frozen;
ch->frozen = NULL;
siis_begin_transaction(dev, fccb);
xpt_release_simq(ch->sim, TRUE);
}
/* If we have no other active commands, ... */
if (ch->rslots == 0) {
/* if there were timeouts or fatal error - reset port. */
if (ch->toslots != 0 || ch->fatalerr) {
siis_reset(dev);
} else {
/* if we have slots in error, we can reinit port. */
if (ch->eslots != 0)
siis_portinit(dev);
/* if there commands on hold, we can do READ LOG. */
if (!ch->readlog && ch->numhslots)
siis_issue_read_log(dev);
}
/* If all the reset of commands are in timeout - abort them. */
} else if ((ch->rslots & ~ch->toslots) == 0 &&
et != SIIS_ERR_TIMEOUT)
siis_rearm_timeout(dev);
}
static void
siis_issue_read_log(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
union ccb *ccb;
struct ccb_ataio *ataio;
int i;
/* Find some holden command. */
for (i = 0; i < SIIS_MAX_SLOTS; i++) {
if (ch->hold[i])
break;
}
if (i == SIIS_MAX_SLOTS)
return;
ch->readlog = 1;
ccb = xpt_alloc_ccb_nowait();
if (ccb == NULL) {
device_printf(dev, "Unable allocate READ LOG command");
return; /* XXX */
}
ccb->ccb_h = ch->hold[i]->ccb_h; /* Reuse old header. */
ccb->ccb_h.func_code = XPT_ATA_IO;
ccb->ccb_h.flags = CAM_DIR_IN;
ccb->ccb_h.timeout = 1000; /* 1s should be enough. */
ataio = &ccb->ataio;
ataio->data_ptr = malloc(512, M_SIIS, M_NOWAIT);
if (ataio->data_ptr == NULL) {
xpt_free_ccb(ccb);
device_printf(dev, "Unable allocate memory for READ LOG command");
return; /* XXX */
}
ataio->dxfer_len = 512;
bzero(&ataio->cmd, sizeof(ataio->cmd));
ataio->cmd.flags = CAM_ATAIO_48BIT;
ataio->cmd.command = 0x2F; /* READ LOG EXT */
ataio->cmd.sector_count = 1;
ataio->cmd.sector_count_exp = 0;
ataio->cmd.lba_low = 0x10;
ataio->cmd.lba_mid = 0;
ataio->cmd.lba_mid_exp = 0;
siis_begin_transaction(dev, ccb);
}
static void
siis_process_read_log(device_t dev, union ccb *ccb)
{
struct siis_channel *ch = device_get_softc(dev);
uint8_t *data;
struct ata_res *res;
int i;
ch->readlog = 0;
data = ccb->ataio.data_ptr;
if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP &&
(data[0] & 0x80) == 0) {
for (i = 0; i < SIIS_MAX_SLOTS; i++) {
if (!ch->hold[i])
continue;
if (ch->hold[i]->ccb_h.target_id != ccb->ccb_h.target_id)
continue;
if ((data[0] & 0x1F) == i) {
res = &ch->hold[i]->ataio.res;
res->status = data[2];
res->error = data[3];
res->lba_low = data[4];
res->lba_mid = data[5];
res->lba_high = data[6];
res->device = data[7];
res->lba_low_exp = data[8];
res->lba_mid_exp = data[9];
res->lba_high_exp = data[10];
res->sector_count = data[12];
res->sector_count_exp = data[13];
} else {
ch->hold[i]->ccb_h.status &= ~CAM_STATUS_MASK;
ch->hold[i]->ccb_h.status |= CAM_REQUEUE_REQ;
}
xpt_done(ch->hold[i]);
ch->hold[i] = NULL;
ch->numhslots--;
}
} else {
if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
device_printf(dev, "Error while READ LOG EXT\n");
else if ((data[0] & 0x80) == 0) {
device_printf(dev, "Non-queued command error in READ LOG EXT\n");
}
for (i = 0; i < SIIS_MAX_SLOTS; i++) {
if (!ch->hold[i])
continue;
if (ch->hold[i]->ccb_h.target_id != ccb->ccb_h.target_id)
continue;
xpt_done(ch->hold[i]);
ch->hold[i] = NULL;
ch->numhslots--;
}
}
free(ccb->ataio.data_ptr, M_SIIS);
xpt_free_ccb(ccb);
}
static void
siis_portinit(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
int i;
ch->eslots = 0;
ch->recovery = 0;
ATA_OUTL(ch->r_mem, SIIS_P_CTLCLR, SIIS_P_CTL_RESUME);
for (i = 0; i < 16; i++) {
ATA_OUTL(ch->r_mem, SIIS_P_PMPSTS(i), 0),
ATA_OUTL(ch->r_mem, SIIS_P_PMPQACT(i), 0);
}
ATA_OUTL(ch->r_mem, SIIS_P_CTLSET, SIIS_P_CTL_PORT_INIT);
siis_wait_ready(dev, 1000);
}
static int
siis_devreset(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
int timeout = 0;
uint32_t val;
ATA_OUTL(ch->r_mem, SIIS_P_CTLSET, SIIS_P_CTL_DEV_RESET);
while (((val = ATA_INL(ch->r_mem, SIIS_P_STS)) &
SIIS_P_CTL_DEV_RESET) != 0) {
DELAY(1000);
if (timeout++ > 100) {
device_printf(dev, "device reset stuck (timeout %dms) "
"status = %08x\n", timeout, val);
return (EBUSY);
}
}
return (0);
}
static int
siis_wait_ready(device_t dev, int t)
{
struct siis_channel *ch = device_get_softc(dev);
int timeout = 0;
uint32_t val;
while (((val = ATA_INL(ch->r_mem, SIIS_P_STS)) &
SIIS_P_CTL_READY) == 0) {
DELAY(1000);
if (timeout++ > t) {
device_printf(dev, "port is not ready (timeout %dms) "
"status = %08x\n", t, val);
return (EBUSY);
}
}
return (0);
}
static void
siis_reset(device_t dev)
{
struct siis_channel *ch = device_get_softc(dev);
int i, retry = 0, sata_rev;
uint32_t val;
xpt_freeze_simq(ch->sim, 1);
if (bootverbose)
device_printf(dev, "SIIS reset...\n");
if (!ch->readlog && !ch->recovery)
xpt_freeze_simq(ch->sim, ch->numrslots);
/* Requeue frozen command. */
if (ch->frozen) {
union ccb *fccb = ch->frozen;
ch->frozen = NULL;
fccb->ccb_h.status &= ~CAM_STATUS_MASK;
fccb->ccb_h.status |= CAM_REQUEUE_REQ | CAM_RELEASE_SIMQ;
if (!(fccb->ccb_h.status & CAM_DEV_QFRZN)) {
xpt_freeze_devq(fccb->ccb_h.path, 1);
fccb->ccb_h.status |= CAM_DEV_QFRZN;
}
xpt_done(fccb);
}
/* Requeue all running commands. */
for (i = 0; i < SIIS_MAX_SLOTS; i++) {
/* Do we have a running request on slot? */
if (ch->slot[i].state < SIIS_SLOT_RUNNING)
continue;
/* XXX; Commands in loading state. */
siis_end_transaction(&ch->slot[i], SIIS_ERR_INNOCENT);
}
/* Finish all holden commands as-is. */
for (i = 0; i < SIIS_MAX_SLOTS; i++) {
if (!ch->hold[i])
continue;
xpt_done(ch->hold[i]);
ch->hold[i] = NULL;
ch->numhslots--;
}
if (ch->toslots != 0)
xpt_release_simq(ch->sim, TRUE);
ch->eslots = 0;
ch->recovery = 0;
ch->toslots = 0;
ch->fatalerr = 0;
/* Disable port interrupts */
ATA_OUTL(ch->r_mem, SIIS_P_IECLR, 0x0000FFFF);
/* Set speed limit. */
sata_rev = ch->user[ch->pm_present ? 15 : 0].revision;
if (sata_rev == 1)
val = ATA_SC_SPD_SPEED_GEN1;
else if (sata_rev == 2)
val = ATA_SC_SPD_SPEED_GEN2;
else if (sata_rev == 3)
val = ATA_SC_SPD_SPEED_GEN3;
else
val = 0;
ATA_OUTL(ch->r_mem, SIIS_P_SCTL,
ATA_SC_DET_IDLE | val | ((ch->pm_level > 0) ? 0 :
(ATA_SC_IPM_DIS_PARTIAL | ATA_SC_IPM_DIS_SLUMBER)));
retry:
siis_devreset(dev);
/* Reset and reconnect PHY, */
if (!siis_sata_connect(ch)) {
ch->devices = 0;
/* Enable port interrupts */
ATA_OUTL(ch->r_mem, SIIS_P_IESET, SIIS_P_IX_ENABLED);
if (bootverbose)
device_printf(dev,
"SIIS reset done: phy reset found no device\n");
/* Tell the XPT about the event */
xpt_async(AC_BUS_RESET, ch->path, NULL);
xpt_release_simq(ch->sim, TRUE);
return;
}
/* Wait for clearing busy status. */
if (siis_wait_ready(dev, 10000)) {
device_printf(dev, "device ready timeout\n");
if (!retry) {
device_printf(dev, "trying full port reset ...\n");
/* Get port to the reset state. */
ATA_OUTL(ch->r_mem, SIIS_P_CTLSET, SIIS_P_CTL_PORT_RESET);
DELAY(10000);
/* Get port out of reset state. */
ATA_OUTL(ch->r_mem, SIIS_P_CTLCLR, SIIS_P_CTL_PORT_RESET);
ATA_OUTL(ch->r_mem, SIIS_P_CTLCLR, SIIS_P_CTL_32BIT);
if (ch->pm_present)
ATA_OUTL(ch->r_mem, SIIS_P_CTLSET, SIIS_P_CTL_PME);
else
ATA_OUTL(ch->r_mem, SIIS_P_CTLCLR, SIIS_P_CTL_PME);
siis_wait_ready(dev, 5000);
retry = 1;
goto retry;
}
}
ch->devices = 1;
/* Enable port interrupts */
ATA_OUTL(ch->r_mem, SIIS_P_IS, 0xFFFFFFFF);
ATA_OUTL(ch->r_mem, SIIS_P_IESET, SIIS_P_IX_ENABLED);
if (bootverbose)
device_printf(dev, "SIIS reset done: devices=%08x\n", ch->devices);
/* Tell the XPT about the event */
xpt_async(AC_BUS_RESET, ch->path, NULL);
xpt_release_simq(ch->sim, TRUE);
}
static int
siis_setup_fis(device_t dev, struct siis_cmd *ctp, union ccb *ccb, int tag)
{
struct siis_channel *ch = device_get_softc(dev);
u_int8_t *fis = &ctp->fis[0];
bzero(fis, 24);
fis[0] = 0x27; /* host to device */
fis[1] = (ccb->ccb_h.target_id & 0x0f);
if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
fis[1] |= 0x80;
fis[2] = ATA_PACKET_CMD;
if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE &&
ch->curr[ccb->ccb_h.target_id].mode >= ATA_DMA)
fis[3] = ATA_F_DMA;
else {
fis[5] = ccb->csio.dxfer_len;
fis[6] = ccb->csio.dxfer_len >> 8;
}
fis[7] = ATA_D_LBA;
fis[15] = ATA_A_4BIT;
bzero(ctp->u.atapi.ccb, 16);
bcopy((ccb->ccb_h.flags & CAM_CDB_POINTER) ?
ccb->csio.cdb_io.cdb_ptr : ccb->csio.cdb_io.cdb_bytes,
ctp->u.atapi.ccb, ccb->csio.cdb_len);
} else if ((ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL) == 0) {
fis[1] |= 0x80;
fis[2] = ccb->ataio.cmd.command;
fis[3] = ccb->ataio.cmd.features;
fis[4] = ccb->ataio.cmd.lba_low;
fis[5] = ccb->ataio.cmd.lba_mid;
fis[6] = ccb->ataio.cmd.lba_high;
fis[7] = ccb->ataio.cmd.device;
fis[8] = ccb->ataio.cmd.lba_low_exp;
fis[9] = ccb->ataio.cmd.lba_mid_exp;
fis[10] = ccb->ataio.cmd.lba_high_exp;
fis[11] = ccb->ataio.cmd.features_exp;
if (ccb->ataio.cmd.flags & CAM_ATAIO_FPDMA) {
fis[12] = tag << 3;
fis[13] = 0;
} else {
fis[12] = ccb->ataio.cmd.sector_count;
fis[13] = ccb->ataio.cmd.sector_count_exp;
}
fis[15] = ATA_A_4BIT;
} else {
/* Soft reset. */
}
return (20);
}
static int
siis_sata_connect(struct siis_channel *ch)
{
u_int32_t status;
int timeout;
/* Wait up to 100ms for "connect well" */
for (timeout = 0; timeout < 100 ; timeout++) {
status = ATA_INL(ch->r_mem, SIIS_P_SSTS);
if (((status & ATA_SS_DET_MASK) == ATA_SS_DET_PHY_ONLINE) &&
((status & ATA_SS_SPD_MASK) != ATA_SS_SPD_NO_SPEED) &&
((status & ATA_SS_IPM_MASK) == ATA_SS_IPM_ACTIVE))
break;
DELAY(1000);
}
if (timeout >= 100) {
if (bootverbose) {
device_printf(ch->dev, "SATA connect timeout status=%08x\n",
status);
}
return (0);
}
if (bootverbose) {
device_printf(ch->dev, "SATA connect time=%dms status=%08x\n",
timeout, status);
}
/* Clear SATA error register */
ATA_OUTL(ch->r_mem, SIIS_P_SERR, 0xffffffff);
return (1);
}
static int
siis_check_ids(device_t dev, union ccb *ccb)
{
if (ccb->ccb_h.target_id > 15) {
ccb->ccb_h.status = CAM_TID_INVALID;
xpt_done(ccb);
return (-1);
}
if (ccb->ccb_h.target_lun != 0) {
ccb->ccb_h.status = CAM_LUN_INVALID;
xpt_done(ccb);
return (-1);
}
return (0);
}
static void
siisaction(struct cam_sim *sim, union ccb *ccb)
{
device_t dev, parent;
struct siis_channel *ch;
CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("siisaction func_code=%x\n",
ccb->ccb_h.func_code));
ch = (struct siis_channel *)cam_sim_softc(sim);
dev = ch->dev;
mtx_assert(&ch->mtx, MA_OWNED);
switch (ccb->ccb_h.func_code) {
/* Common cases first */
case XPT_ATA_IO: /* Execute the requested I/O operation */
case XPT_SCSI_IO:
if (siis_check_ids(dev, ccb))
return;
if (ch->devices == 0 ||
(ch->pm_present == 0 &&
ccb->ccb_h.target_id > 0 && ccb->ccb_h.target_id < 15)) {
ccb->ccb_h.status = CAM_SEL_TIMEOUT;
break;
}
/* Check for command collision. */
if (siis_check_collision(dev, ccb)) {
/* Freeze command. */
ch->frozen = ccb;
/* We have only one frozen slot, so freeze simq also. */
xpt_freeze_simq(ch->sim, 1);
return;
}
siis_begin_transaction(dev, ccb);
return;
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;
break;
case XPT_SET_TRAN_SETTINGS:
{
struct ccb_trans_settings *cts = &ccb->cts;
struct siis_device *d;
if (siis_check_ids(dev, ccb))
return;
if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
d = &ch->curr[ccb->ccb_h.target_id];
else
d = &ch->user[ccb->ccb_h.target_id];
if (cts->xport_specific.sata.valid & CTS_SATA_VALID_REVISION)
d->revision = cts->xport_specific.sata.revision;
if (cts->xport_specific.sata.valid & CTS_SATA_VALID_MODE)
d->mode = cts->xport_specific.sata.mode;
if (cts->xport_specific.sata.valid & CTS_SATA_VALID_BYTECOUNT)
d->bytecount = min(8192, cts->xport_specific.sata.bytecount);
if (cts->xport_specific.sata.valid & CTS_SATA_VALID_TAGS)
d->tags = min(SIIS_MAX_SLOTS, cts->xport_specific.sata.tags);
if (cts->xport_specific.sata.valid & CTS_SATA_VALID_PM) {
ch->pm_present = cts->xport_specific.sata.pm_present;
if (ch->pm_present)
ATA_OUTL(ch->r_mem, SIIS_P_CTLSET, SIIS_P_CTL_PME);
else
ATA_OUTL(ch->r_mem, SIIS_P_CTLCLR, SIIS_P_CTL_PME);
}
if (cts->xport_specific.sata.valid & CTS_SATA_VALID_TAGS)
d->atapi = cts->xport_specific.sata.atapi;
if (cts->xport_specific.sata.valid & CTS_SATA_VALID_CAPS)
d->caps = cts->xport_specific.sata.caps;
ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
case XPT_GET_TRAN_SETTINGS:
/* Get default/user set transfer settings for the target */
{
struct ccb_trans_settings *cts = &ccb->cts;
struct siis_device *d;
uint32_t status;
if (siis_check_ids(dev, ccb))
return;
if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
d = &ch->curr[ccb->ccb_h.target_id];
else
d = &ch->user[ccb->ccb_h.target_id];
cts->protocol = PROTO_ATA;
cts->protocol_version = PROTO_VERSION_UNSPECIFIED;
cts->transport = XPORT_SATA;
cts->transport_version = XPORT_VERSION_UNSPECIFIED;
cts->proto_specific.valid = 0;
cts->xport_specific.sata.valid = 0;
if (cts->type == CTS_TYPE_CURRENT_SETTINGS &&
(ccb->ccb_h.target_id == 15 ||
(ccb->ccb_h.target_id == 0 && !ch->pm_present))) {
status = ATA_INL(ch->r_mem, SIIS_P_SSTS) & ATA_SS_SPD_MASK;
if (status & 0x0f0) {
cts->xport_specific.sata.revision =
(status & 0x0f0) >> 4;
cts->xport_specific.sata.valid |=
CTS_SATA_VALID_REVISION;
}
cts->xport_specific.sata.caps = d->caps & CTS_SATA_CAPS_D;
if (ch->pm_level)
cts->xport_specific.sata.caps |= CTS_SATA_CAPS_H_PMREQ;
cts->xport_specific.sata.caps &=
ch->user[ccb->ccb_h.target_id].caps;
cts->xport_specific.sata.valid |= CTS_SATA_VALID_CAPS;
} else {
cts->xport_specific.sata.revision = d->revision;
cts->xport_specific.sata.valid |= CTS_SATA_VALID_REVISION;
cts->xport_specific.sata.caps = d->caps;
cts->xport_specific.sata.valid |= CTS_SATA_VALID_CAPS;
}
cts->xport_specific.sata.mode = d->mode;
cts->xport_specific.sata.valid |= CTS_SATA_VALID_MODE;
cts->xport_specific.sata.bytecount = d->bytecount;
cts->xport_specific.sata.valid |= CTS_SATA_VALID_BYTECOUNT;
cts->xport_specific.sata.pm_present = ch->pm_present;
cts->xport_specific.sata.valid |= CTS_SATA_VALID_PM;
cts->xport_specific.sata.tags = d->tags;
cts->xport_specific.sata.valid |= CTS_SATA_VALID_TAGS;
cts->xport_specific.sata.atapi = d->atapi;
cts->xport_specific.sata.valid |= CTS_SATA_VALID_ATAPI;
ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
case XPT_RESET_BUS: /* Reset the specified SCSI bus */
case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
siis_reset(dev);
ccb->ccb_h.status = CAM_REQ_CMP;
break;
case XPT_TERM_IO: /* Terminate the I/O process */
/* XXX Implement */
ccb->ccb_h.status = CAM_REQ_INVALID;
break;
case XPT_PATH_INQ: /* Path routing inquiry */
{
struct ccb_pathinq *cpi = &ccb->cpi;
parent = device_get_parent(dev);
cpi->version_num = 1; /* XXX??? */
cpi->hba_inquiry = PI_SDTR_ABLE | PI_TAG_ABLE;
cpi->hba_inquiry |= PI_SATAPM;
cpi->target_sprt = 0;
cpi->hba_misc = PIM_SEQSCAN;
cpi->hba_eng_cnt = 0;
cpi->max_target = 15;
cpi->max_lun = 0;
cpi->initiator_id = 0;
cpi->bus_id = cam_sim_bus(sim);
cpi->base_transfer_speed = 150000;
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(cpi->hba_vid, "SIIS", HBA_IDLEN);
strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
cpi->unit_number = cam_sim_unit(sim);
cpi->transport = XPORT_SATA;
cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
cpi->protocol = PROTO_ATA;
cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
cpi->maxio = MAXPHYS;
cpi->hba_vendor = pci_get_vendor(parent);
cpi->hba_device = pci_get_device(parent);
cpi->hba_subvendor = pci_get_subvendor(parent);
cpi->hba_subdevice = pci_get_subdevice(parent);
cpi->ccb_h.status = CAM_REQ_CMP;
break;
}
default:
ccb->ccb_h.status = CAM_REQ_INVALID;
break;
}
xpt_done(ccb);
}
static void
siispoll(struct cam_sim *sim)
{
struct siis_channel *ch = (struct siis_channel *)cam_sim_softc(sim);
siis_ch_intr(ch->dev);
}
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