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a69552e4b6
freebsd-skq/sys/dev/ahci/ahci.c
Alexander Motin a69552e4b6 MFp4: 
- Handle timeouts and fatal errors with port hard-reset. The rest of
recovery will be done by XPT on receiving async event. More gracefull
per-device soft-reset recovery can be implemented later.
- Add workaround for ATI SB600/SB700 PMP probe related bug, to speedup boot.
2009-11-03 11:47:07 +00:00

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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/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include "ahci.h"
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>
#include <cam/cam_xpt_periph.h>
#include <cam/cam_debug.h>
/* local prototypes */
static int ahci_setup_interrupt(device_t dev);
static void ahci_intr(void *data);
static void ahci_intr_one(void *data);
static int ahci_suspend(device_t dev);
static int ahci_resume(device_t dev);
static int ahci_ch_suspend(device_t dev);
static int ahci_ch_resume(device_t dev);
static void ahci_ch_pm(void *arg);
static void ahci_ch_intr_locked(void *data);
static void ahci_ch_intr(void *data);
static int ahci_ctlr_reset(device_t dev);
static void ahci_begin_transaction(device_t dev, union ccb *ccb);
static void ahci_dmasetprd(void *arg, bus_dma_segment_t *segs, int nsegs, int error);
static void ahci_execute_transaction(struct ahci_slot *slot);
static void ahci_timeout(struct ahci_slot *slot);
static void ahci_end_transaction(struct ahci_slot *slot, enum ahci_err_type et);
static int ahci_setup_fis(struct ahci_cmd_tab *ctp, union ccb *ccb, int tag);
static void ahci_dmainit(device_t dev);
static void ahci_dmasetupc_cb(void *xsc, bus_dma_segment_t *segs, int nsegs, int error);
static void ahci_dmafini(device_t dev);
static void ahci_slotsalloc(device_t dev);
static void ahci_slotsfree(device_t dev);
static void ahci_reset(device_t dev);
static void ahci_start(device_t dev);
static void ahci_stop(device_t dev);
static void ahci_clo(device_t dev);
static void ahci_start_fr(device_t dev);
static void ahci_stop_fr(device_t dev);
static int ahci_sata_connect(struct ahci_channel *ch);
static int ahci_sata_phy_reset(device_t dev, int quick);
static void ahci_issue_read_log(device_t dev);
static void ahci_process_read_log(device_t dev, union ccb *ccb);
static void ahciaction(struct cam_sim *sim, union ccb *ccb);
static void ahcipoll(struct cam_sim *sim);
MALLOC_DEFINE(M_AHCI, "AHCI driver", "AHCI driver data buffers");
/*
* AHCI v1.x compliant SATA chipset support functions
*/
static int
ahci_probe(device_t dev)
{
/* is this a possible AHCI candidate ? */
if (pci_get_class(dev) != PCIC_STORAGE ||
pci_get_subclass(dev) != PCIS_STORAGE_SATA)
return (ENXIO);
/* is this PCI device flagged as an AHCI compliant chip ? */
if (pci_get_progif(dev) != PCIP_STORAGE_SATA_AHCI_1_0)
return (ENXIO);
device_set_desc_copy(dev, "AHCI controller");
return (BUS_PROBE_VENDOR);
}
static int
ahci_attach(device_t dev)
{
struct ahci_controller *ctlr = device_get_softc(dev);
device_t child;
int error, unit, speed;
u_int32_t version;
ctlr->dev = dev;
resource_int_value(device_get_name(dev),
device_get_unit(dev), "ccc", &ctlr->ccc);
/* if we have a memory BAR(5) we are likely on an AHCI part */
ctlr->r_rid = PCIR_BAR(5);
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_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);
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);
rman_fini(&ctlr->sc_iomem);
return (error);
}
/* Reset controller */
if ((error = ahci_ctlr_reset(dev)) != 0) {
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem);
rman_fini(&ctlr->sc_iomem);
return (error);
};
/* Get the number of HW channels */
ctlr->ichannels = ATA_INL(ctlr->r_mem, AHCI_PI);
ctlr->channels = MAX(flsl(ctlr->ichannels),
(ATA_INL(ctlr->r_mem, AHCI_CAP) & AHCI_CAP_NPMASK) + 1);
/* Setup interrupts. */
if (ahci_setup_interrupt(dev)) {
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem);
rman_fini(&ctlr->sc_iomem);
return ENXIO;
}
/* Announce HW capabilities. */
version = ATA_INL(ctlr->r_mem, AHCI_VS);
ctlr->caps = ATA_INL(ctlr->r_mem, AHCI_CAP);
if (version >= 0x00010020)
ctlr->caps2 = ATA_INL(ctlr->r_mem, AHCI_CAP2);
speed = (ctlr->caps & AHCI_CAP_ISS) >> AHCI_CAP_ISS_SHIFT;
device_printf(dev,
"AHCI v%x.%02x with %d %sGbps ports, Port Multiplier %s\n",
((version >> 20) & 0xf0) + ((version >> 16) & 0x0f),
((version >> 4) & 0xf0) + (version & 0x0f),
(ctlr->caps & AHCI_CAP_NPMASK) + 1,
((speed == 1) ? "1.5":((speed == 2) ? "3":
((speed == 3) ? "6":"?"))),
(ctlr->caps & AHCI_CAP_SPM) ?
"supported" : "not supported");
if (bootverbose) {
device_printf(dev, "Caps:%s%s%s%s%s%s%s%s %sGbps",
(ctlr->caps & AHCI_CAP_64BIT) ? " 64bit":"",
(ctlr->caps & AHCI_CAP_SNCQ) ? " NCQ":"",
(ctlr->caps & AHCI_CAP_SSNTF) ? " SNTF":"",
(ctlr->caps & AHCI_CAP_SMPS) ? " MPS":"",
(ctlr->caps & AHCI_CAP_SSS) ? " SS":"",
(ctlr->caps & AHCI_CAP_SALP) ? " ALP":"",
(ctlr->caps & AHCI_CAP_SAL) ? " AL":"",
(ctlr->caps & AHCI_CAP_SCLO) ? " CLO":"",
((speed == 1) ? "1.5":((speed == 2) ? "3":
((speed == 3) ? "6":"?"))));
printf("%s%s%s%s%s%s %dcmd%s%s%s %dports\n",
(ctlr->caps & AHCI_CAP_SAM) ? " AM":"",
(ctlr->caps & AHCI_CAP_SPM) ? " PM":"",
(ctlr->caps & AHCI_CAP_FBSS) ? " FBS":"",
(ctlr->caps & AHCI_CAP_PMD) ? " PMD":"",
(ctlr->caps & AHCI_CAP_SSC) ? " SSC":"",
(ctlr->caps & AHCI_CAP_PSC) ? " PSC":"",
((ctlr->caps & AHCI_CAP_NCS) >> AHCI_CAP_NCS_SHIFT) + 1,
(ctlr->caps & AHCI_CAP_CCCS) ? " CCC":"",
(ctlr->caps & AHCI_CAP_EMS) ? " EM":"",
(ctlr->caps & AHCI_CAP_SXS) ? " eSATA":"",
(ctlr->caps & AHCI_CAP_NPMASK) + 1);
}
if (bootverbose && version >= 0x00010020) {
device_printf(dev, "Caps2:%s%s%s\n",
(ctlr->caps2 & AHCI_CAP2_APST) ? " APST":"",
(ctlr->caps2 & AHCI_CAP2_NVMP) ? " NVMP":"",
(ctlr->caps2 & AHCI_CAP2_BOH) ? " BOH":"");
}
/* Attach all channels on this controller */
for (unit = 0; unit < ctlr->channels; unit++) {
if ((ctlr->ichannels & (1 << unit)) == 0)
continue;
child = device_add_child(dev, "ahcich", -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
ahci_detach(device_t dev)
{
struct ahci_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. */
for (i = 0; i < ctlr->numirqs; i++) {
if (ctlr->irqs[i].r_irq) {
bus_teardown_intr(dev, ctlr->irqs[i].r_irq,
ctlr->irqs[i].handle);
bus_release_resource(dev, SYS_RES_IRQ,
ctlr->irqs[i].r_irq_rid, ctlr->irqs[i].r_irq);
}
}
pci_release_msi(dev);
/* Free memory. */
rman_fini(&ctlr->sc_iomem);
if (ctlr->r_mem)
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem);
return (0);
}
static int
ahci_ctlr_reset(device_t dev)
{
struct ahci_controller *ctlr = device_get_softc(dev);
int timeout;
if (pci_read_config(dev, 0x00, 4) == 0x28298086 &&
(pci_read_config(dev, 0x92, 1) & 0xfe) == 0x04)
pci_write_config(dev, 0x92, 0x01, 1);
/* Enable AHCI mode */
ATA_OUTL(ctlr->r_mem, AHCI_GHC, AHCI_GHC_AE);
/* Reset AHCI controller */
ATA_OUTL(ctlr->r_mem, AHCI_GHC, AHCI_GHC_AE|AHCI_GHC_HR);
for (timeout = 1000; timeout > 0; timeout--) {
DELAY(1000);
if ((ATA_INL(ctlr->r_mem, AHCI_GHC) & AHCI_GHC_HR) == 0)
break;
}
if (timeout == 0) {
device_printf(dev, "AHCI controller reset failure\n");
return ENXIO;
}
/* Reenable AHCI mode */
ATA_OUTL(ctlr->r_mem, AHCI_GHC, AHCI_GHC_AE);
/* Clear interrupts */
ATA_OUTL(ctlr->r_mem, AHCI_IS, ATA_INL(ctlr->r_mem, AHCI_IS));
/* Configure CCC */
if (ctlr->ccc) {
ATA_OUTL(ctlr->r_mem, AHCI_CCCP, ATA_INL(ctlr->r_mem, AHCI_PI));
ATA_OUTL(ctlr->r_mem, AHCI_CCCC,
(ctlr->ccc << AHCI_CCCC_TV_SHIFT) |
(4 << AHCI_CCCC_CC_SHIFT) |
AHCI_CCCC_EN);
ctlr->cccv = (ATA_INL(ctlr->r_mem, AHCI_CCCC) &
AHCI_CCCC_INT_MASK) >> AHCI_CCCC_INT_SHIFT;
if (bootverbose) {
device_printf(dev,
"CCC with %dms/4cmd enabled on vector %d\n",
ctlr->ccc, ctlr->cccv);
}
}
/* Enable AHCI interrupts */
ATA_OUTL(ctlr->r_mem, AHCI_GHC,
ATA_INL(ctlr->r_mem, AHCI_GHC) | AHCI_GHC_IE);
return (0);
}
static int
ahci_suspend(device_t dev)
{
struct ahci_controller *ctlr = device_get_softc(dev);
bus_generic_suspend(dev);
/* Disable interupts, so the state change(s) doesn't trigger */
ATA_OUTL(ctlr->r_mem, AHCI_GHC,
ATA_INL(ctlr->r_mem, AHCI_GHC) & (~AHCI_GHC_IE));
return 0;
}
static int
ahci_resume(device_t dev)
{
int res;
if ((res = ahci_ctlr_reset(dev)) != 0)
return (res);
return (bus_generic_resume(dev));
}
static int
ahci_setup_interrupt(device_t dev)
{
struct ahci_controller *ctlr = device_get_softc(dev);
int i, msi = 1;
/* Process hints. */
resource_int_value(device_get_name(dev),
device_get_unit(dev), "msi", &msi);
if (msi < 0)
msi = 0;
else if (msi == 1)
msi = min(1, pci_msi_count(dev));
else if (msi > 1)
msi = pci_msi_count(dev);
/* Allocate MSI if needed/present. */
if (msi && pci_alloc_msi(dev, &msi) == 0) {
ctlr->numirqs = msi;
} else {
msi = 0;
ctlr->numirqs = 1;
}
/* Check for single MSI vector fallback. */
if (ctlr->numirqs > 1 &&
(ATA_INL(ctlr->r_mem, AHCI_GHC) & AHCI_GHC_MRSM) != 0) {
device_printf(dev, "Falling back to one MSI\n");
ctlr->numirqs = 1;
}
/* Allocate all IRQs. */
for (i = 0; i < ctlr->numirqs; i++) {
ctlr->irqs[i].ctlr = ctlr;
ctlr->irqs[i].r_irq_rid = i + (msi ? 1 : 0);
if (ctlr->numirqs == 1 || i >= ctlr->channels ||
(ctlr->ccc && i == ctlr->cccv))
ctlr->irqs[i].mode = AHCI_IRQ_MODE_ALL;
else if (i == ctlr->numirqs - 1)
ctlr->irqs[i].mode = AHCI_IRQ_MODE_AFTER;
else
ctlr->irqs[i].mode = AHCI_IRQ_MODE_ONE;
if (!(ctlr->irqs[i].r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&ctlr->irqs[i].r_irq_rid, RF_SHAREABLE | RF_ACTIVE))) {
device_printf(dev, "unable to map interrupt\n");
return ENXIO;
}
if ((bus_setup_intr(dev, ctlr->irqs[i].r_irq, ATA_INTR_FLAGS, NULL,
(ctlr->irqs[i].mode == AHCI_IRQ_MODE_ONE) ? ahci_intr_one : ahci_intr,
&ctlr->irqs[i], &ctlr->irqs[i].handle))) {
/* SOS XXX release r_irq */
device_printf(dev, "unable to setup interrupt\n");
return ENXIO;
}
}
return (0);
}
/*
* Common case interrupt handler.
*/
static void
ahci_intr(void *data)
{
struct ahci_controller_irq *irq = data;
struct ahci_controller *ctlr = irq->ctlr;
u_int32_t is;
void *arg;
int unit;
if (irq->mode == AHCI_IRQ_MODE_ALL) {
unit = 0;
if (ctlr->ccc)
is = ctlr->ichannels;
else
is = ATA_INL(ctlr->r_mem, AHCI_IS);
} else { /* AHCI_IRQ_MODE_AFTER */
unit = irq->r_irq_rid - 1;
is = ATA_INL(ctlr->r_mem, AHCI_IS);
}
for (; unit < ctlr->channels; unit++) {
if ((is & (1 << unit)) != 0 &&
(arg = ctlr->interrupt[unit].argument)) {
ctlr->interrupt[unit].function(arg);
ATA_OUTL(ctlr->r_mem, AHCI_IS, 1 << unit);
}
}
}
/*
* Simplified interrupt handler for multivector MSI mode.
*/
static void
ahci_intr_one(void *data)
{
struct ahci_controller_irq *irq = data;
struct ahci_controller *ctlr = irq->ctlr;
void *arg;
int unit;
unit = irq->r_irq_rid - 1;
if ((arg = ctlr->interrupt[unit].argument))
ctlr->interrupt[unit].function(arg);
}
static struct resource *
ahci_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 ahci_controller *ctlr = device_get_softc(dev);
int unit = ((struct ahci_channel *)device_get_softc(child))->unit;
struct resource *res = NULL;
int offset = AHCI_OFFSET + (unit << 7);
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 + 127, 128, 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, 128, &bsh);
rman_set_bushandle(res, bsh);
rman_set_bustag(res, bst);
}
break;
case SYS_RES_IRQ:
if (*rid == ATA_IRQ_RID)
res = ctlr->irqs[0].r_irq;
break;
}
return (res);
}
static int
ahci_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
ahci_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 ahci_controller *ctlr = device_get_softc(dev);
int unit = (intptr_t)device_get_ivars(child);
if (filter != NULL) {
printf("ahci.c: we cannot use a filter here\n");
return (EINVAL);
}
ctlr->interrupt[unit].function = function;
ctlr->interrupt[unit].argument = argument;
return (0);
}
static int
ahci_teardown_intr(device_t dev, device_t child, struct resource *irq,
void *cookie)
{
struct ahci_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
ahci_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);
}
devclass_t ahci_devclass;
static device_method_t ahci_methods[] = {
DEVMETHOD(device_probe, ahci_probe),
DEVMETHOD(device_attach, ahci_attach),
DEVMETHOD(device_detach, ahci_detach),
DEVMETHOD(device_suspend, ahci_suspend),
DEVMETHOD(device_resume, ahci_resume),
DEVMETHOD(bus_print_child, ahci_print_child),
DEVMETHOD(bus_alloc_resource, ahci_alloc_resource),
DEVMETHOD(bus_release_resource, ahci_release_resource),
DEVMETHOD(bus_setup_intr, ahci_setup_intr),
DEVMETHOD(bus_teardown_intr,ahci_teardown_intr),
{ 0, 0 }
};
static driver_t ahci_driver = {
"ahci",
ahci_methods,
sizeof(struct ahci_controller)
};
DRIVER_MODULE(ahci, pci, ahci_driver, ahci_devclass, 0, 0);
MODULE_VERSION(ahci, 1);
MODULE_DEPEND(ahci, cam, 1, 1, 1);
static int
ahci_ch_probe(device_t dev)
{
device_set_desc_copy(dev, "AHCI channel");
return (0);
}
static int
ahci_ch_attach(device_t dev)
{
struct ahci_controller *ctlr = device_get_softc(device_get_parent(dev));
struct ahci_channel *ch = device_get_softc(dev);
struct cam_devq *devq;
int rid, error;
ch->dev = dev;
ch->unit = (intptr_t)device_get_ivars(dev);
ch->caps = ctlr->caps;
ch->caps2 = ctlr->caps2;
ch->numslots = ((ch->caps & AHCI_CAP_NCS) >> AHCI_CAP_NCS_SHIFT) + 1,
mtx_init(&ch->mtx, "AHCI channel lock", NULL, MTX_DEF);
resource_int_value(device_get_name(dev),
device_get_unit(dev), "pm_level", &ch->pm_level);
if (ch->pm_level > 3)
callout_init_mtx(&ch->pm_timer, &ch->mtx, 0);
/* Limit speed for my onboard JMicron external port.
* It is not eSATA really. */
if (pci_get_devid(ctlr->dev) == 0x2363197b &&
pci_get_subvendor(ctlr->dev) == 0x1043 &&
pci_get_subdevice(ctlr->dev) == 0x81e4 &&
ch->unit == 0)
ch->sata_rev = 1;
resource_int_value(device_get_name(dev),
device_get_unit(dev), "sata_rev", &ch->sata_rev);
rid = ch->unit;
if (!(ch->r_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&rid, RF_ACTIVE)))
return (ENXIO);
ahci_dmainit(dev);
ahci_slotsalloc(dev);
ahci_ch_resume(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))) {
bus_release_resource(dev, SYS_RES_MEMORY, ch->unit, ch->r_mem);
device_printf(dev, "Unable to map interrupt\n");
return (ENXIO);
}
if ((bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS, NULL,
ahci_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(ch->numslots);
if (devq == NULL) {
device_printf(dev, "Unable to allocate simq\n");
error = ENOMEM;
goto err1;
}
/* Construct SIM entry */
ch->sim = cam_sim_alloc(ahciaction, ahcipoll, "ahcich", ch,
device_get_unit(dev), &ch->mtx, ch->numslots, 0, devq);
if (ch->sim == NULL) {
device_printf(dev, "unable to allocate sim\n");
error = ENOMEM;
goto err2;
}
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;
}
if (ch->pm_level > 3) {
callout_reset(&ch->pm_timer,
(ch->pm_level == 4) ? hz / 1000 : hz / 8,
ahci_ch_pm, dev);
}
mtx_unlock(&ch->mtx);
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);
bus_release_resource(dev, SYS_RES_MEMORY, ch->unit, ch->r_mem);
mtx_unlock(&ch->mtx);
return (error);
}
static int
ahci_ch_detach(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
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);
if (ch->pm_level > 3)
callout_drain(&ch->pm_timer);
bus_teardown_intr(dev, ch->r_irq, ch->ih);
bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq);
ahci_ch_suspend(dev);
ahci_slotsfree(dev);
ahci_dmafini(dev);
bus_release_resource(dev, SYS_RES_MEMORY, ch->unit, ch->r_mem);
mtx_destroy(&ch->mtx);
return (0);
}
static int
ahci_ch_suspend(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
/* Disable port interrupts. */
ATA_OUTL(ch->r_mem, AHCI_P_IE, 0);
/* Reset command register. */
ahci_stop(dev);
ahci_stop_fr(dev);
ATA_OUTL(ch->r_mem, AHCI_P_CMD, 0);
/* Allow everything, including partial and slumber modes. */
ATA_OUTL(ch->r_mem, AHCI_P_SCTL, 0);
/* Request slumber mode transition and give some time to get there. */
ATA_OUTL(ch->r_mem, AHCI_P_CMD, AHCI_P_CMD_SLUMBER);
DELAY(100);
/* Disable PHY. */
ATA_OUTL(ch->r_mem, AHCI_P_SCTL, ATA_SC_DET_DISABLE);
return (0);
}
static int
ahci_ch_resume(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
uint64_t work;
/* Disable port interrupts */
ATA_OUTL(ch->r_mem, AHCI_P_IE, 0);
/* Setup work areas */
work = ch->dma.work_bus + AHCI_CL_OFFSET;
ATA_OUTL(ch->r_mem, AHCI_P_CLB, work & 0xffffffff);
ATA_OUTL(ch->r_mem, AHCI_P_CLBU, work >> 32);
work = ch->dma.rfis_bus;
ATA_OUTL(ch->r_mem, AHCI_P_FB, work & 0xffffffff);
ATA_OUTL(ch->r_mem, AHCI_P_FBU, work >> 32);
/* Activate the channel and power/spin up device */
ATA_OUTL(ch->r_mem, AHCI_P_CMD,
(AHCI_P_CMD_ACTIVE | AHCI_P_CMD_POD | AHCI_P_CMD_SUD |
((ch->pm_level == 2 || ch->pm_level == 3) ? AHCI_P_CMD_ALPE : 0) |
((ch->pm_level > 2) ? AHCI_P_CMD_ASP : 0 )));
ahci_start_fr(dev);
ahci_start(dev);
return (0);
}
devclass_t ahcich_devclass;
static device_method_t ahcich_methods[] = {
DEVMETHOD(device_probe, ahci_ch_probe),
DEVMETHOD(device_attach, ahci_ch_attach),
DEVMETHOD(device_detach, ahci_ch_detach),
DEVMETHOD(device_suspend, ahci_ch_suspend),
DEVMETHOD(device_resume, ahci_ch_resume),
{ 0, 0 }
};
static driver_t ahcich_driver = {
"ahcich",
ahcich_methods,
sizeof(struct ahci_channel)
};
DRIVER_MODULE(ahcich, ahci, ahcich_driver, ahci_devclass, 0, 0);
struct ahci_dc_cb_args {
bus_addr_t maddr;
int error;
};
static void
ahci_dmainit(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
struct ahci_dc_cb_args dcba;
if (ch->caps & AHCI_CAP_64BIT)
ch->dma.max_address = BUS_SPACE_MAXADDR;
else
ch->dma.max_address = BUS_SPACE_MAXADDR_32BIT;
/* Command area. */
if (bus_dma_tag_create(bus_get_dma_tag(dev), 1024, 0,
ch->dma.max_address, BUS_SPACE_MAXADDR,
NULL, NULL, AHCI_WORK_SIZE, 1, AHCI_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,
AHCI_WORK_SIZE, ahci_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;
/* FIS receive area. */
if (bus_dma_tag_create(bus_get_dma_tag(dev), 4096, 0,
ch->dma.max_address, BUS_SPACE_MAXADDR,
NULL, NULL, 4096, 1, 4096,
0, NULL, NULL, &ch->dma.rfis_tag))
goto error;
if (bus_dmamem_alloc(ch->dma.rfis_tag, (void **)&ch->dma.rfis, 0,
&ch->dma.rfis_map))
goto error;
if (bus_dmamap_load(ch->dma.rfis_tag, ch->dma.rfis_map, ch->dma.rfis,
4096, ahci_dmasetupc_cb, &dcba, 0) || dcba.error) {
bus_dmamem_free(ch->dma.rfis_tag, ch->dma.rfis, ch->dma.rfis_map);
goto error;
}
ch->dma.rfis_bus = dcba.maddr;
/* Data area. */
if (bus_dma_tag_create(bus_get_dma_tag(dev), 2, 0,
ch->dma.max_address, BUS_SPACE_MAXADDR,
NULL, NULL,
AHCI_SG_ENTRIES * PAGE_SIZE * ch->numslots,
AHCI_SG_ENTRIES, AHCI_PRD_MAX,
0, busdma_lock_mutex, &ch->mtx, &ch->dma.data_tag)) {
goto error;
}
return;
error:
device_printf(dev, "WARNING - DMA initialization failed\n");
ahci_dmafini(dev);
}
static void
ahci_dmasetupc_cb(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
{
struct ahci_dc_cb_args *dcba = (struct ahci_dc_cb_args *)xsc;
if (!(dcba->error = error))
dcba->maddr = segs[0].ds_addr;
}
static void
ahci_dmafini(device_t dev)
{
struct ahci_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.rfis_bus) {
bus_dmamap_unload(ch->dma.rfis_tag, ch->dma.rfis_map);
bus_dmamem_free(ch->dma.rfis_tag, ch->dma.rfis, ch->dma.rfis_map);
ch->dma.rfis_bus = 0;
ch->dma.rfis_map = NULL;
ch->dma.rfis = 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
ahci_slotsalloc(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
int i;
/* Alloc and setup command/dma slots */
bzero(ch->slot, sizeof(ch->slot));
for (i = 0; i < ch->numslots; i++) {
struct ahci_slot *slot = &ch->slot[i];
slot->dev = dev;
slot->slot = i;
slot->state = AHCI_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
ahci_slotsfree(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
int i;
/* Free all dma slots */
for (i = 0; i < ch->numslots; i++) {
struct ahci_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
ahci_phy_check_events(device_t dev, u_int32_t serr)
{
struct ahci_channel *ch = device_get_softc(dev);
if ((serr & ATA_SE_PHY_CHANGED) && (ch->pm_level == 0)) {
u_int32_t status = ATA_INL(ch->r_mem, AHCI_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)) {
if (bootverbose)
device_printf(dev, "CONNECT requested\n");
ahci_reset(dev);
} else {
if (bootverbose)
device_printf(dev, "DISCONNECT requested\n");
ch->devices = 0;
}
}
}
static void
ahci_notify_events(device_t dev, u_int32_t status)
{
struct ahci_channel *ch = device_get_softc(dev);
struct cam_path *dpath;
int i;
ATA_OUTL(ch->r_mem, AHCI_P_SNTF, status);
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
ahci_ch_intr_locked(void *data)
{
device_t dev = (device_t)data;
struct ahci_channel *ch = device_get_softc(dev);
mtx_lock(&ch->mtx);
ahci_ch_intr(data);
mtx_unlock(&ch->mtx);
}
static void
ahci_ch_pm(void *arg)
{
device_t dev = (device_t)arg;
struct ahci_channel *ch = device_get_softc(dev);
uint32_t work;
if (ch->numrslots != 0)
return;
work = ATA_INL(ch->r_mem, AHCI_P_CMD);
if (ch->pm_level == 4)
work |= AHCI_P_CMD_PARTIAL;
else
work |= AHCI_P_CMD_SLUMBER;
ATA_OUTL(ch->r_mem, AHCI_P_CMD, work);
}
static void
ahci_ch_intr(void *data)
{
device_t dev = (device_t)data;
struct ahci_channel *ch = device_get_softc(dev);
uint32_t istatus, sstatus, cstatus, serr = 0, sntf = 0, ok, err;
enum ahci_err_type et;
int i, ccs, ncq_err = 0;
/* Read and clear interrupt statuses. */
istatus = ATA_INL(ch->r_mem, AHCI_P_IS);
if (istatus == 0)
return;
ATA_OUTL(ch->r_mem, AHCI_P_IS, istatus);
/* Read command statuses. */
sstatus = ATA_INL(ch->r_mem, AHCI_P_SACT);
cstatus = ATA_INL(ch->r_mem, AHCI_P_CI);
if ((istatus & AHCI_P_IX_SDB) && (ch->caps & AHCI_CAP_SSNTF))
sntf = ATA_INL(ch->r_mem, AHCI_P_SNTF);
/* Process PHY events */
if (istatus & (AHCI_P_IX_PC | AHCI_P_IX_PRC | AHCI_P_IX_OF |
AHCI_P_IX_IF | AHCI_P_IX_HBD | AHCI_P_IX_HBF | AHCI_P_IX_TFE)) {
serr = ATA_INL(ch->r_mem, AHCI_P_SERR);
if (serr) {
ATA_OUTL(ch->r_mem, AHCI_P_SERR, serr);
ahci_phy_check_events(dev, serr);
}
}
/* Process command errors */
if (istatus & (AHCI_P_IX_OF | AHCI_P_IX_IF |
AHCI_P_IX_HBD | AHCI_P_IX_HBF | AHCI_P_IX_TFE)) {
//device_printf(dev, "%s ERROR is %08x cs %08x ss %08x rs %08x tfd %02x serr %08x\n",
// __func__, istatus, cstatus, sstatus, ch->rslots, ATA_INL(ch->r_mem, AHCI_P_TFD),
// serr);
ccs = (ATA_INL(ch->r_mem, AHCI_P_CMD) & AHCI_P_CMD_CCS_MASK)
>> AHCI_P_CMD_CCS_SHIFT;
err = ch->rslots & (cstatus | sstatus);
/* Kick controller into sane state */
ahci_stop(dev);
ahci_start(dev);
} else {
ccs = 0;
err = 0;
}
/* Complete all successfull commands. */
ok = ch->rslots & ~(cstatus | sstatus);
for (i = 0; i < ch->numslots; i++) {
if ((ok >> i) & 1)
ahci_end_transaction(&ch->slot[i], AHCI_ERR_NONE);
}
/* On error, complete the rest of commands with error statuses. */
if (err) {
if (ch->frozen) {
union ccb *fccb = ch->frozen;
ch->frozen = NULL;
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);
}
for (i = 0; i < ch->numslots; i++) {
/* XXX: reqests in loading state. */
if (((err >> i) & 1) == 0)
continue;
if (istatus & AHCI_P_IX_TFE) {
/* Task File Error */
if (ch->numtslots == 0) {
/* Untagged operation. */
if (i == ccs)
et = AHCI_ERR_TFE;
else
et = AHCI_ERR_INNOCENT;
} else {
/* Tagged operation. */
et = AHCI_ERR_NCQ;
ncq_err = 1;
}
} else if (istatus & AHCI_P_IX_IF) {
if (ch->numtslots == 0 && i != ccs)
et = AHCI_ERR_INNOCENT;
else
et = AHCI_ERR_SATA;
} else
et = AHCI_ERR_INVALID;
ahci_end_transaction(&ch->slot[i], et);
}
if (ncq_err)
ahci_issue_read_log(dev);
}
/* Process NOTIFY events */
if (sntf)
ahci_notify_events(dev, sntf);
}
/* Must be called with channel locked. */
static int
ahci_check_collision(device_t dev, union ccb *ccb)
{
struct ahci_channel *ch = device_get_softc(dev);
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_FPDMA)) {
/* Tagged command while untagged are active. */
if (ch->numrslots != 0 && ch->numtslots == 0)
return (1);
/* Tagged command while tagged to other target is active. */
if (ch->numtslots != 0 &&
ch->taggedtarget != ccb->ccb_h.target_id)
return (1);
} else {
/* Untagged command while tagged are active. */
if (ch->numrslots != 0 && ch->numtslots != 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
ahci_begin_transaction(device_t dev, union ccb *ccb)
{
struct ahci_channel *ch = device_get_softc(dev);
struct ahci_slot *slot;
int tag;
/* Choose empty slot. */
tag = ch->lastslot;
while (ch->slot[tag].state != AHCI_SLOT_EMPTY) {
if (++tag >= ch->numslots)
tag = 0;
KASSERT(tag != ch->lastslot, ("ahci: ALL SLOTS BUSY!"));
}
ch->lastslot = tag;
/* Occupy chosen slot. */
slot = &ch->slot[tag];
slot->ccb = ccb;
/* Stop PM timer. */
if (ch->numrslots == 0 && ch->pm_level > 3)
callout_stop(&ch->pm_timer);
/* Update channel stats. */
ch->numrslots++;
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_FPDMA)) {
ch->numtslots++;
ch->taggedtarget = 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 = AHCI_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, ahci_dmasetprd, slot, 0);
} else
ahci_execute_transaction(slot);
}
/* Locked by busdma engine. */
static void
ahci_dmasetprd(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
{
struct ahci_slot *slot = arg;
struct ahci_channel *ch = device_get_softc(slot->dev);
struct ahci_cmd_tab *ctp;
struct ahci_dma_prd *prd;
int i;
if (error) {
device_printf(slot->dev, "DMA load error\n");
ahci_end_transaction(slot, AHCI_ERR_INVALID);
return;
}
KASSERT(nsegs <= AHCI_SG_ENTRIES, ("too many DMA segment entries\n"));
/* Get a piece of the workspace for this request */
ctp = (struct ahci_cmd_tab *)
(ch->dma.work + AHCI_CT_OFFSET + (AHCI_CT_SIZE * slot->slot));
/* Fill S/G table */
prd = &ctp->prd_tab[0];
for (i = 0; i < nsegs; i++) {
prd[i].dba = htole64(segs[i].ds_addr);
prd[i].dbc = htole32((segs[i].ds_len - 1) & AHCI_PRD_MASK);
}
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));
ahci_execute_transaction(slot);
}
/* Must be called with channel locked. */
static void
ahci_execute_transaction(struct ahci_slot *slot)
{
device_t dev = slot->dev;
struct ahci_channel *ch = device_get_softc(dev);
struct ahci_cmd_tab *ctp;
struct ahci_cmd_list *clp;
union ccb *ccb = slot->ccb;
int port = ccb->ccb_h.target_id & 0x0f;
int fis_size;
/* Get a piece of the workspace for this request */
ctp = (struct ahci_cmd_tab *)
(ch->dma.work + AHCI_CT_OFFSET + (AHCI_CT_SIZE * slot->slot));
/* Setup the FIS for this request */
if (!(fis_size = ahci_setup_fis(ctp, ccb, slot->slot))) {
device_printf(ch->dev, "Setting up SATA FIS failed\n");
ahci_end_transaction(slot, AHCI_ERR_INVALID);
return;
}
/* Setup the command list entry */
clp = (struct ahci_cmd_list *)
(ch->dma.work + AHCI_CL_OFFSET + (AHCI_CL_SIZE * slot->slot));
clp->prd_length = slot->dma.nsegs;
clp->cmd_flags = (ccb->ccb_h.flags & CAM_DIR_OUT ? AHCI_CMD_WRITE : 0) |
(ccb->ccb_h.func_code == XPT_SCSI_IO ?
(AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH) : 0) |
(fis_size / sizeof(u_int32_t)) |
(port << 12);
/* 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 */
ahci_stop(dev);
ahci_clo(dev);
ahci_start(dev);
clp->cmd_flags |= AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY;
}
clp->bytecount = 0;
clp->cmd_table_phys = htole64(ch->dma.work_bus + AHCI_CT_OFFSET +
(AHCI_CT_SIZE * slot->slot));
bus_dmamap_sync(ch->dma.work_tag, ch->dma.work_map,
BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(ch->dma.rfis_tag, ch->dma.rfis_map,
BUS_DMASYNC_PREREAD);
/* Set ACTIVE bit for NCQ commands. */
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_FPDMA)) {
ATA_OUTL(ch->r_mem, AHCI_P_SACT, 1 << slot->slot);
}
/* Issue command to the controller. */
slot->state = AHCI_SLOT_RUNNING;
ch->rslots |= (1 << slot->slot);
ATA_OUTL(ch->r_mem, AHCI_P_CI, (1 << slot->slot));
/* Device reset commands doesn't interrupt. Poll them. */
if (ccb->ccb_h.func_code == XPT_ATA_IO &&
(ccb->ataio.cmd.command == ATA_DEVICE_RESET ||
(ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL))) {
int count, timeout = ccb->ccb_h.timeout;
enum ahci_err_type et = AHCI_ERR_NONE;
for (count = 0; count < timeout; count++) {
DELAY(1000);
if (!(ATA_INL(ch->r_mem, AHCI_P_CI) & (1 << slot->slot)))
break;
if (ATA_INL(ch->r_mem, AHCI_P_TFD) & ATA_S_ERROR) {
device_printf(ch->dev,
"Poll error on slot %d, TFD: %04x\n",
slot->slot, ATA_INL(ch->r_mem, AHCI_P_TFD));
et = AHCI_ERR_TFE;
break;
}
/* Workaround for ATI SB600/SB700 chipsets. */
if (ccb->ccb_h.target_id == 15 &&
pci_get_vendor(device_get_parent(dev)) == 0x1002 &&
(ATA_INL(ch->r_mem, AHCI_P_IS) & AHCI_P_IX_IPM)) {
et = AHCI_ERR_TIMEOUT;
break;
}
}
if (timeout && (count >= timeout)) {
device_printf(ch->dev,
"Poll timeout on slot %d\n", slot->slot);
et = AHCI_ERR_TIMEOUT;
}
if (et != AHCI_ERR_NONE) {
/* Kick controller into sane state */
ahci_stop(ch->dev);
ahci_start(ch->dev);
}
ahci_end_transaction(slot, et);
return;
}
/* Start command execution timeout */
callout_reset(&slot->timeout, (int)ccb->ccb_h.timeout * hz / 2000,
(timeout_t*)ahci_timeout, slot);
return;
}
/* Locked by callout mechanism. */
static void
ahci_timeout(struct ahci_slot *slot)
{
device_t dev = slot->dev;
struct ahci_channel *ch = device_get_softc(dev);
uint32_t sstatus;
int ccs;
int i;
/* Check for stale timeout. */
if (slot->state < AHCI_SLOT_RUNNING)
return;
/* Check if slot was not being executed last time we checked. */
if (slot->state < AHCI_SLOT_EXECUTING) {
/* Check if slot started executing. */
sstatus = ATA_INL(ch->r_mem, AHCI_P_SACT);
ccs = (ATA_INL(ch->r_mem, AHCI_P_CMD) & AHCI_P_CMD_CCS_MASK)
>> AHCI_P_CMD_CCS_SHIFT;
if ((sstatus & (1 << slot->slot)) != 0 || ccs == slot->slot)
slot->state = AHCI_SLOT_EXECUTING;
callout_reset(&slot->timeout,
(int)slot->ccb->ccb_h.timeout * hz / 2000,
(timeout_t*)ahci_timeout, slot);
return;
}
device_printf(dev, "Timeout on slot %d\n", slot->slot);
device_printf(dev, "is %08x cs %08x ss %08x rs %08x tfd %02x serr %08x\n",
ATA_INL(ch->r_mem, AHCI_P_IS), ATA_INL(ch->r_mem, AHCI_P_CI),
ATA_INL(ch->r_mem, AHCI_P_SACT), ch->rslots,
ATA_INL(ch->r_mem, AHCI_P_TFD), ATA_INL(ch->r_mem, AHCI_P_SERR));
ch->fatalerr = 1;
/* Handle frozen command. */
if (ch->frozen) {
union ccb *fccb = ch->frozen;
ch->frozen = NULL;
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);
}
/* Handle command with timeout. */
ahci_end_transaction(&ch->slot[slot->slot], AHCI_ERR_TIMEOUT);
/* Handle the rest of commands. */
for (i = 0; i < ch->numslots; i++) {
/* Do we have a running request on slot? */
if (ch->slot[i].state < AHCI_SLOT_RUNNING)
continue;
ahci_end_transaction(&ch->slot[i], AHCI_ERR_INNOCENT);
}
}
/* Must be called with channel locked. */
static void
ahci_end_transaction(struct ahci_slot *slot, enum ahci_err_type et)
{
device_t dev = slot->dev;
struct ahci_channel *ch = device_get_softc(dev);
union ccb *ccb = slot->ccb;
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 == AHCI_ERR_TFE) ||
(ccb->ataio.cmd.flags & CAM_ATAIO_NEEDRESULT)) {
u_int8_t *fis = ch->dma.rfis + 0x40;
uint16_t tfd = ATA_INL(ch->r_mem, AHCI_P_TFD);
bus_dmamap_sync(ch->dma.rfis_tag, ch->dma.rfis_map,
BUS_DMASYNC_POSTREAD);
res->status = tfd;
res->error = tfd >> 8;
res->lba_low = fis[4];
res->lba_mid = fis[5];
res->lba_high = fis[6];
res->device = fis[7];
res->lba_low_exp = fis[8];
res->lba_mid_exp = fis[9];
res->lba_high_exp = fis[10];
res->sector_count = fis[12];
res->sector_count_exp = fis[13];
} else
bzero(res, sizeof(*res));
}
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);
}
/* In case of error, freeze device for proper recovery. */
if ((et != AHCI_ERR_NONE) && (!ch->readlog) &&
!(ccb->ccb_h.status & CAM_DEV_QFRZN)) {
xpt_freeze_devq(ccb->ccb_h.path, 1);
ccb->ccb_h.status |= CAM_DEV_QFRZN;
}
/* Set proper result status. */
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
switch (et) {
case AHCI_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 AHCI_ERR_INVALID:
ch->fatalerr = 1;
ccb->ccb_h.status |= CAM_REQ_INVALID;
break;
case AHCI_ERR_INNOCENT:
ccb->ccb_h.status |= CAM_REQUEUE_REQ;
break;
case AHCI_ERR_TFE:
case AHCI_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 AHCI_ERR_SATA:
ch->fatalerr = 1;
if (!ch->readlog) {
xpt_freeze_simq(ch->sim, 1);
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
}
ccb->ccb_h.status |= CAM_UNCOR_PARITY;
break;
case AHCI_ERR_TIMEOUT:
/* Do no treat soft-reset timeout as fatal here. */
if (ccb->ccb_h.func_code != XPT_ATA_IO ||
!(ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL))
ch->fatalerr = 1;
if (!ch->readlog) {
xpt_freeze_simq(ch->sim, 1);
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
}
ccb->ccb_h.status |= CAM_CMD_TIMEOUT;
break;
default:
ch->fatalerr = 1;
ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
}
/* Free slot. */
ch->rslots &= ~(1 << slot->slot);
ch->aslots &= ~(1 << slot->slot);
slot->state = AHCI_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--;
}
/* If it was first request of reset sequence and there is no error,
* proceed to second request. */
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL) &&
(ccb->ataio.cmd.control & ATA_A_RESET) &&
et == AHCI_ERR_NONE) {
ccb->ataio.cmd.control &= ~ATA_A_RESET;
ahci_begin_transaction(dev, ccb);
return;
}
/* If it was our READ LOG command - process it. */
if (ch->readlog) {
ahci_process_read_log(dev, ccb);
/* If it was NCQ command error, put result on hold. */
} else if (et == AHCI_ERR_NCQ) {
ch->hold[slot->slot] = ccb;
} else
xpt_done(ccb);
/* Unfreeze frozen command. */
if (ch->frozen && ch->numrslots == 0) {
union ccb *fccb = ch->frozen;
ch->frozen = NULL;
ahci_begin_transaction(dev, fccb);
xpt_release_simq(ch->sim, TRUE);
}
/* If we have no other active commands, ... */
if (ch->rslots == 0) {
/* if there was fatal error - reset port. */
if (ch->fatalerr) {
ahci_reset(dev);
}
}
/* Start PM timer. */
if (ch->numrslots == 0 && ch->pm_level > 3) {
callout_schedule(&ch->pm_timer,
(ch->pm_level == 4) ? hz / 1000 : hz / 8);
}
}
static void
ahci_issue_read_log(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
union ccb *ccb;
struct ccb_ataio *ataio;
int i;
ch->readlog = 1;
/* Find some holden command. */
for (i = 0; i < ch->numslots; i++) {
if (ch->hold[i])
break;
}
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_AHCI, M_NOWAIT);
if (ataio->data_ptr == NULL) {
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;
/* Freeze SIM while doing READ LOG EXT. */
xpt_freeze_simq(ch->sim, 1);
ahci_begin_transaction(dev, ccb);
}
static void
ahci_process_read_log(device_t dev, union ccb *ccb)
{
struct ahci_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 < ch->numslots; i++) {
if (!ch->hold[i])
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;
}
} 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 < ch->numslots; i++) {
if (!ch->hold[i])
continue;
xpt_done(ch->hold[i]);
ch->hold[i] = NULL;
}
}
free(ccb->ataio.data_ptr, M_AHCI);
xpt_free_ccb(ccb);
xpt_release_simq(ch->sim, TRUE);
}
static void
ahci_start(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
u_int32_t cmd;
/* Clear SATA error register */
ATA_OUTL(ch->r_mem, AHCI_P_SERR, 0xFFFFFFFF);
/* Clear any interrupts pending on this channel */
ATA_OUTL(ch->r_mem, AHCI_P_IS, 0xFFFFFFFF);
/* Start operations on this channel */
cmd = ATA_INL(ch->r_mem, AHCI_P_CMD);
ATA_OUTL(ch->r_mem, AHCI_P_CMD, cmd | AHCI_P_CMD_ST |
(ch->pm_present ? AHCI_P_CMD_PMA : 0));
}
static void
ahci_stop(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
u_int32_t cmd;
int timeout;
/* Kill all activity on this channel */
cmd = ATA_INL(ch->r_mem, AHCI_P_CMD);
ATA_OUTL(ch->r_mem, AHCI_P_CMD, cmd & ~AHCI_P_CMD_ST);
/* Wait for activity stop. */
timeout = 0;
do {
DELAY(1000);
if (timeout++ > 1000) {
device_printf(dev, "stopping AHCI engine failed\n");
break;
}
} while (ATA_INL(ch->r_mem, AHCI_P_CMD) & AHCI_P_CMD_CR);
}
static void
ahci_clo(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
u_int32_t cmd;
int timeout;
/* Issue Command List Override if supported */
if (ch->caps & AHCI_CAP_SCLO) {
cmd = ATA_INL(ch->r_mem, AHCI_P_CMD);
cmd |= AHCI_P_CMD_CLO;
ATA_OUTL(ch->r_mem, AHCI_P_CMD, cmd);
timeout = 0;
do {
DELAY(1000);
if (timeout++ > 1000) {
device_printf(dev, "executing CLO failed\n");
break;
}
} while (ATA_INL(ch->r_mem, AHCI_P_CMD) & AHCI_P_CMD_CLO);
}
}
static void
ahci_stop_fr(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
u_int32_t cmd;
int timeout;
/* Kill all FIS reception on this channel */
cmd = ATA_INL(ch->r_mem, AHCI_P_CMD);
ATA_OUTL(ch->r_mem, AHCI_P_CMD, cmd & ~AHCI_P_CMD_FRE);
/* Wait for FIS reception stop. */
timeout = 0;
do {
DELAY(1000);
if (timeout++ > 1000) {
device_printf(dev, "stopping AHCI FR engine failed\n");
break;
}
} while (ATA_INL(ch->r_mem, AHCI_P_CMD) & AHCI_P_CMD_FR);
}
static void
ahci_start_fr(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
u_int32_t cmd;
/* Start FIS reception on this channel */
cmd = ATA_INL(ch->r_mem, AHCI_P_CMD);
ATA_OUTL(ch->r_mem, AHCI_P_CMD, cmd | AHCI_P_CMD_FRE);
}
static int
ahci_wait_ready(device_t dev, int t)
{
struct ahci_channel *ch = device_get_softc(dev);
int timeout = 0;
uint32_t val;
while ((val = ATA_INL(ch->r_mem, AHCI_P_TFD)) &
(ATA_S_BUSY | ATA_S_DRQ)) {
DELAY(1000);
if (timeout++ > t) {
device_printf(dev, "port is not ready (timeout %dms) "
"tfd = %08x\n", t, val);
return (EBUSY);
}
}
if (bootverbose)
device_printf(dev, "ready wait time=%dms\n", timeout);
return (0);
}
static void
ahci_reset(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
struct ahci_controller *ctlr = device_get_softc(device_get_parent(dev));
int i;
if (bootverbose)
device_printf(dev, "AHCI reset...\n");
/* Requeue freezed command. */
if (ch->frozen) {
union ccb *fccb = ch->frozen;
ch->frozen = NULL;
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);
}
/* Kill the engine and requeue all running commands. */
ahci_stop(dev);
for (i = 0; i < ch->numslots; i++) {
/* Do we have a running request on slot? */
if (ch->slot[i].state < AHCI_SLOT_RUNNING)
continue;
/* XXX; Commands in loading state. */
ahci_end_transaction(&ch->slot[i], AHCI_ERR_INNOCENT);
}
for (i = 0; i < ch->numslots; i++) {
if (!ch->hold[i])
continue;
xpt_done(ch->hold[i]);
ch->hold[i] = NULL;
}
ch->fatalerr = 0;
/* Tell the XPT about the event */
xpt_async(AC_BUS_RESET, ch->path, NULL);
/* Disable port interrupts */
ATA_OUTL(ch->r_mem, AHCI_P_IE, 0);
/* Reset and reconnect PHY, */
if (!ahci_sata_phy_reset(dev, 0)) {
if (bootverbose)
device_printf(dev,
"AHCI reset done: phy reset found no device\n");
ch->devices = 0;
/* Enable wanted port interrupts */
ATA_OUTL(ch->r_mem, AHCI_P_IE,
(AHCI_P_IX_CPD | AHCI_P_IX_PRC | AHCI_P_IX_PC));
return;
}
/* Wait for clearing busy status. */
if (ahci_wait_ready(dev, 10000)) {
device_printf(dev, "device ready timeout\n");
ahci_clo(dev);
}
ahci_start(dev);
ch->devices = 1;
/* Enable wanted port interrupts */
ATA_OUTL(ch->r_mem, AHCI_P_IE,
(AHCI_P_IX_CPD | AHCI_P_IX_TFE | AHCI_P_IX_HBF |
AHCI_P_IX_HBD | AHCI_P_IX_IF | AHCI_P_IX_OF |
((ch->pm_level == 0) ? AHCI_P_IX_PRC | AHCI_P_IX_PC : 0) |
AHCI_P_IX_DP | AHCI_P_IX_UF | (ctlr->ccc ? 0 : AHCI_P_IX_SDB) |
AHCI_P_IX_DS | AHCI_P_IX_PS | (ctlr->ccc ? 0 : AHCI_P_IX_DHR)));
if (bootverbose)
device_printf(dev, "AHCI reset done: device found\n");
}
static int
ahci_setup_fis(struct ahci_cmd_tab *ctp, union ccb *ccb, int tag)
{
u_int8_t *fis = &ctp->cfis[0];
bzero(ctp->cfis, 64);
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)
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->acmd, 32);
bcopy((ccb->ccb_h.flags & CAM_CDB_POINTER) ?
ccb->csio.cdb_io.cdb_ptr : ccb->csio.cdb_io.cdb_bytes,
ctp->acmd, 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 {
fis[15] = ccb->ataio.cmd.control;
}
return (20);
}
static int
ahci_sata_connect(struct ahci_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, AHCI_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;
if ((status & ATA_SS_DET_MASK) == ATA_SS_DET_PHY_OFFLINE) {
if (bootverbose) {
device_printf(ch->dev, "SATA offline status=%08x\n",
status);
}
return (0);
}
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, AHCI_P_SERR, 0xffffffff);
return (1);
}
static int
ahci_sata_phy_reset(device_t dev, int quick)
{
struct ahci_channel *ch = device_get_softc(dev);
uint32_t val;
if (quick) {
val = ATA_INL(ch->r_mem, AHCI_P_SCTL);
if ((val & ATA_SC_DET_MASK) == ATA_SC_DET_IDLE)
return (ahci_sata_connect(ch));
}
if (bootverbose)
device_printf(dev, "hardware reset ...\n");
if (ch->sata_rev == 1)
val = ATA_SC_SPD_SPEED_GEN1;
else if (ch->sata_rev == 2)
val = ATA_SC_SPD_SPEED_GEN2;
else if (ch->sata_rev == 3)
val = ATA_SC_SPD_SPEED_GEN3;
else
val = 0;
ATA_OUTL(ch->r_mem, AHCI_P_SCTL,
ATA_SC_DET_RESET | val |
ATA_SC_IPM_DIS_PARTIAL | ATA_SC_IPM_DIS_SLUMBER);
DELAY(5000);
ATA_OUTL(ch->r_mem, AHCI_P_SCTL,
ATA_SC_DET_IDLE | val | ((ch->pm_level > 0) ? 0 :
(ATA_SC_IPM_DIS_PARTIAL | ATA_SC_IPM_DIS_SLUMBER)));
DELAY(5000);
return (ahci_sata_connect(ch));
}
static void
ahciaction(struct cam_sim *sim, union ccb *ccb)
{
device_t dev;
struct ahci_channel *ch;
CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahciaction func_code=%x\n",
ccb->ccb_h.func_code));
ch = (struct ahci_channel *)cam_sim_softc(sim);
dev = ch->dev;
switch (ccb->ccb_h.func_code) {
/* Common cases first */
case XPT_ATA_IO: /* Execute the requested I/O operation */
case XPT_SCSI_IO:
if (ch->devices == 0) {
ccb->ccb_h.status = CAM_SEL_TIMEOUT;
xpt_done(ccb);
break;
}
/* Check for command collision. */
if (ahci_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;
}
ahci_begin_transaction(dev, ccb);
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:
{
struct ccb_trans_settings *cts = &ccb->cts;
if (cts->xport_specific.sata.valid & CTS_SATA_VALID_PM) {
ch->pm_present = cts->xport_specific.sata.pm_present;
}
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_GET_TRAN_SETTINGS:
/* Get default/user set transfer settings for the target */
{
struct ccb_trans_settings *cts = &ccb->cts;
uint32_t status;
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)
status = ATA_INL(ch->r_mem, AHCI_P_SSTS) & ATA_SS_SPD_MASK;
else
status = ATA_INL(ch->r_mem, AHCI_P_SCTL) & ATA_SC_SPD_MASK;
if (status & ATA_SS_SPD_GEN3) {
cts->xport_specific.sata.bitrate = 600000;
cts->xport_specific.sata.valid |= CTS_SATA_VALID_SPEED;
} else if (status & ATA_SS_SPD_GEN2) {
cts->xport_specific.sata.bitrate = 300000;
cts->xport_specific.sata.valid |= CTS_SATA_VALID_SPEED;
} else if (status & ATA_SS_SPD_GEN1) {
cts->xport_specific.sata.bitrate = 150000;
cts->xport_specific.sata.valid |= CTS_SATA_VALID_SPEED;
}
if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
cts->xport_specific.sata.pm_present =
(ATA_INL(ch->r_mem, AHCI_P_CMD) & AHCI_P_CMD_PMA) ?
1 : 0;
} else {
cts->xport_specific.sata.pm_present = ch->pm_present;
}
cts->xport_specific.sata.valid |= CTS_SATA_VALID_PM;
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
#if 0
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;
}
#endif
case XPT_RESET_BUS: /* Reset the specified SCSI bus */
case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
ahci_reset(dev);
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 | PI_TAG_ABLE;
if (ch->caps & AHCI_CAP_SPM)
cpi->hba_inquiry |= PI_SATAPM;
cpi->target_sprt = 0;
cpi->hba_misc = PIM_SEQSCAN;
cpi->hba_eng_cnt = 0;
if (ch->caps & AHCI_CAP_SPM)
cpi->max_target = 15;
else
cpi->max_target = 0;
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, "AHCI", 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;
/* ATI SB600 can't handle 256 sectors with FPDMA (NCQ). */
if (pci_get_devid(device_get_parent(dev)) == 0x43801002)
cpi->maxio = min(cpi->maxio, 128 * 512);
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
ahcipoll(struct cam_sim *sim)
{
struct ahci_channel *ch = (struct ahci_channel *)cam_sim_softc(sim);
ahci_ch_intr(ch->dev);
}
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