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freebsd-dev/sys/dev/ahci/ahci.c
Michal Meloun d3214e8d6d AHCI: Fix AHCI driver for ARM. 
On ARM, we must ensure proper interdevice write ordering.
The AHCI interrupt status register must be updated in HW before
registers in interrupt controller.
Unfortunately, only way how we can do it is readback.

Discussed with:	mav
Approved by:	kib (mentor)
Differential Revision: https://reviews.freebsd.org/D4240
2015-11-29 11:28:04 +00:00

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/*-
* Copyright (c) 2009-2012 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/bus.h>
#include <sys/conf.h>
#include <sys/endian.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <machine/stdarg.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.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_debug.h>
/* local prototypes */
static void ahci_intr(void *data);
static void ahci_intr_one(void *data);
static void ahci_intr_one_edge(void *data);
static int ahci_ch_init(device_t dev);
static int ahci_ch_deinit(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(void *arg);
static void ahci_ch_intr_direct(void *arg);
static void ahci_ch_intr_main(struct ahci_channel *ch, uint32_t istatus);
static void ahci_begin_transaction(struct ahci_channel *ch, 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_channel *ch, 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(struct ahci_channel *ch);
static void ahci_start(struct ahci_channel *ch, int fbs);
static void ahci_stop(struct ahci_channel *ch);
static void ahci_clo(struct ahci_channel *ch);
static void ahci_start_fr(struct ahci_channel *ch);
static void ahci_stop_fr(struct ahci_channel *ch);
static int ahci_sata_connect(struct ahci_channel *ch);
static int ahci_sata_phy_reset(struct ahci_channel *ch);
static int ahci_wait_ready(struct ahci_channel *ch, int t, int t0);
static void ahci_issue_recovery(struct ahci_channel *ch);
static void ahci_process_read_log(struct ahci_channel *ch, union ccb *ccb);
static void ahci_process_request_sense(struct ahci_channel *ch, union ccb *ccb);
static void ahciaction(struct cam_sim *sim, union ccb *ccb);
static void ahcipoll(struct cam_sim *sim);
static MALLOC_DEFINE(M_AHCI, "AHCI driver", "AHCI driver data buffers");
#define recovery_type spriv_field0
#define RECOVERY_NONE 0
#define RECOVERY_READ_LOG 1
#define RECOVERY_REQUEST_SENSE 2
#define recovery_slot spriv_field1
int
ahci_ctlr_setup(device_t dev)
{
struct ahci_controller *ctlr = device_get_softc(dev);
/* 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);
}
int
ahci_ctlr_reset(device_t dev)
{
struct ahci_controller *ctlr = device_get_softc(dev);
int timeout;
/* 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);
if (ctlr->quirks & AHCI_Q_RESTORE_CAP) {
/*
* Restore capability field.
* This is write to a read-only register to restore its state.
* On fully standard-compliant hardware this is not needed and
* this operation shall not take place. See ahci_pci.c for
* platforms using this quirk.
*/
ATA_OUTL(ctlr->r_mem, AHCI_CAP, ctlr->caps);
}
return (0);
}
int
ahci_attach(device_t dev)
{
struct ahci_controller *ctlr = device_get_softc(dev);
int error, i, u, speed, unit;
u_int32_t version;
device_t child;
ctlr->dev = dev;
ctlr->ccc = 0;
resource_int_value(device_get_name(dev),
device_get_unit(dev), "ccc", &ctlr->ccc);
/* 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) {
ahci_free_mem(dev);
return (error);
}
if ((error = rman_manage_region(&ctlr->sc_iomem,
rman_get_start(ctlr->r_mem), rman_get_end(ctlr->r_mem))) != 0) {
ahci_free_mem(dev);
rman_fini(&ctlr->sc_iomem);
return (error);
}
/* Get the HW capabilities */
version = ATA_INL(ctlr->r_mem, AHCI_VS);
ctlr->caps = ATA_INL(ctlr->r_mem, AHCI_CAP);
if (version >= 0x00010200)
ctlr->caps2 = ATA_INL(ctlr->r_mem, AHCI_CAP2);
if (ctlr->caps & AHCI_CAP_EMS)
ctlr->capsem = ATA_INL(ctlr->r_mem, AHCI_EM_CTL);
if (ctlr->quirks & AHCI_Q_FORCE_PI) {
/*
* Enable ports.
* The spec says that BIOS sets up bits corresponding to
* available ports. On platforms where this information
* is missing, the driver can define available ports on its own.
*/
int nports = (ctlr->caps & AHCI_CAP_NPMASK) + 1;
int nmask = (1 << nports) - 1;
ATA_OUTL(ctlr->r_mem, AHCI_PI, nmask);
device_printf(dev, "Forcing PI to %d ports (mask = %x)\n",
nports, nmask);
}
ctlr->ichannels = ATA_INL(ctlr->r_mem, AHCI_PI);
/* Identify and set separate quirks for HBA and RAID f/w Marvells. */
if ((ctlr->quirks & AHCI_Q_ALTSIG) &&
(ctlr->caps & AHCI_CAP_SPM) == 0)
ctlr->quirks |= AHCI_Q_NOBSYRES;
if (ctlr->quirks & AHCI_Q_1CH) {
ctlr->caps &= ~AHCI_CAP_NPMASK;
ctlr->ichannels &= 0x01;
}
if (ctlr->quirks & AHCI_Q_2CH) {
ctlr->caps &= ~AHCI_CAP_NPMASK;
ctlr->caps |= 1;
ctlr->ichannels &= 0x03;
}
if (ctlr->quirks & AHCI_Q_4CH) {
ctlr->caps &= ~AHCI_CAP_NPMASK;
ctlr->caps |= 3;
ctlr->ichannels &= 0x0f;
}
ctlr->channels = MAX(flsl(ctlr->ichannels),
(ctlr->caps & AHCI_CAP_NPMASK) + 1);
if (ctlr->quirks & AHCI_Q_NOPMP)
ctlr->caps &= ~AHCI_CAP_SPM;
if (ctlr->quirks & AHCI_Q_NONCQ)
ctlr->caps &= ~AHCI_CAP_SNCQ;
if ((ctlr->caps & AHCI_CAP_CCCS) == 0)
ctlr->ccc = 0;
ctlr->emloc = ATA_INL(ctlr->r_mem, AHCI_EM_LOC);
/* Create controller-wide DMA tag. */
if (bus_dma_tag_create(bus_get_dma_tag(dev), 1, 0,
(ctlr->caps & AHCI_CAP_64BIT) ? BUS_SPACE_MAXADDR :
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
BUS_SPACE_MAXSIZE, BUS_SPACE_UNRESTRICTED, BUS_SPACE_MAXSIZE,
0, NULL, NULL, &ctlr->dma_tag)) {
ahci_free_mem(dev);
rman_fini(&ctlr->sc_iomem);
return (ENXIO);
}
ahci_ctlr_setup(dev);
/* Setup interrupts. */
if ((error = ahci_setup_interrupt(dev)) != 0) {
bus_dma_tag_destroy(ctlr->dma_tag);
ahci_free_mem(dev);
rman_fini(&ctlr->sc_iomem);
return (error);
}
i = 0;
for (u = ctlr->ichannels; u != 0; u >>= 1)
i += (u & 1);
ctlr->direct = (ctlr->msi && (ctlr->numirqs > 1 || i <= 3));
resource_int_value(device_get_name(dev), device_get_unit(dev),
"direct", &ctlr->direct);
/* Announce HW capabilities. */
speed = (ctlr->caps & AHCI_CAP_ISS) >> AHCI_CAP_ISS_SHIFT;
device_printf(dev,
"AHCI v%x.%02x with %d %sGbps ports, Port Multiplier %s%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",
(ctlr->caps & AHCI_CAP_FBSS) ?
" with FBS" : "");
if (ctlr->quirks != 0) {
device_printf(dev, "quirks=0x%b\n", ctlr->quirks,
AHCI_Q_BIT_STRING);
}
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 >= 0x00010200) {
device_printf(dev, "Caps2:%s%s%s%s%s%s\n",
(ctlr->caps2 & AHCI_CAP2_DESO) ? " DESO":"",
(ctlr->caps2 & AHCI_CAP2_SADM) ? " SADM":"",
(ctlr->caps2 & AHCI_CAP2_SDS) ? " SDS":"",
(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++) {
child = device_add_child(dev, "ahcich", -1);
if (child == NULL) {
device_printf(dev, "failed to add channel device\n");
continue;
}
device_set_ivars(child, (void *)(intptr_t)unit);
if ((ctlr->ichannels & (1 << unit)) == 0)
device_disable(child);
}
if (ctlr->caps & AHCI_CAP_EMS) {
child = device_add_child(dev, "ahciem", -1);
if (child == NULL)
device_printf(dev, "failed to add enclosure device\n");
else
device_set_ivars(child, (void *)(intptr_t)-1);
}
bus_generic_attach(dev);
return (0);
}
int
ahci_detach(device_t dev)
{
struct ahci_controller *ctlr = device_get_softc(dev);
int i;
/* Detach & delete all children */
device_delete_children(dev);
/* 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);
}
}
bus_dma_tag_destroy(ctlr->dma_tag);
/* Free memory. */
rman_fini(&ctlr->sc_iomem);
ahci_free_mem(dev);
return (0);
}
void
ahci_free_mem(device_t dev)
{
struct ahci_controller *ctlr = device_get_softc(dev);
/* Release memory resources */
if (ctlr->r_mem)
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem);
if (ctlr->r_msix_table)
bus_release_resource(dev, SYS_RES_MEMORY,
ctlr->r_msix_tab_rid, ctlr->r_msix_table);
if (ctlr->r_msix_pba)
bus_release_resource(dev, SYS_RES_MEMORY,
ctlr->r_msix_pba_rid, ctlr->r_msix_pba);
ctlr->r_msix_pba = ctlr->r_mem = ctlr->r_msix_table = NULL;
}
int
ahci_setup_interrupt(device_t dev)
{
struct ahci_controller *ctlr = device_get_softc(dev);
int i;
/* 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;
}
/* Ensure we don't overrun irqs. */
if (ctlr->numirqs > AHCI_MAX_IRQS) {
device_printf(dev, "Too many irqs %d > %d (clamping)\n",
ctlr->numirqs, AHCI_MAX_IRQS);
ctlr->numirqs = AHCI_MAX_IRQS;
}
/* Allocate all IRQs. */
for (i = 0; i < ctlr->numirqs; i++) {
ctlr->irqs[i].ctlr = ctlr;
ctlr->irqs[i].r_irq_rid = i + (ctlr->msi ? 1 : 0);
if (ctlr->channels == 1 && !ctlr->ccc && ctlr->msi)
ctlr->irqs[i].mode = AHCI_IRQ_MODE_ONE;
else 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 :
((ctlr->quirks & AHCI_Q_EDGEIS) ? ahci_intr_one_edge :
ahci_intr_one),
&ctlr->irqs[i], &ctlr->irqs[i].handle))) {
/* SOS XXX release r_irq */
device_printf(dev, "unable to setup interrupt\n");
return (ENXIO);
}
if (ctlr->numirqs > 1) {
bus_describe_intr(dev, ctlr->irqs[i].r_irq,
ctlr->irqs[i].handle,
ctlr->irqs[i].mode == AHCI_IRQ_MODE_ONE ?
"ch%d" : "%d", i);
}
}
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, ise = 0;
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);
}
/* CCC interrupt is edge triggered. */
if (ctlr->ccc)
ise = 1 << ctlr->cccv;
/* Some controllers have edge triggered IS. */
if (ctlr->quirks & AHCI_Q_EDGEIS)
ise |= is;
if (ise != 0)
ATA_OUTL(ctlr->r_mem, AHCI_IS, ise);
for (; unit < ctlr->channels; unit++) {
if ((is & (1 << unit)) != 0 &&
(arg = ctlr->interrupt[unit].argument)) {
ctlr->interrupt[unit].function(arg);
}
}
/* AHCI declares level triggered IS. */
if (!(ctlr->quirks & AHCI_Q_EDGEIS))
ATA_OUTL(ctlr->r_mem, AHCI_IS, is);
ATA_RBL(ctlr->r_mem, AHCI_IS);
}
/*
* 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);
/* AHCI declares level triggered IS. */
ATA_OUTL(ctlr->r_mem, AHCI_IS, 1 << unit);
ATA_RBL(ctlr->r_mem, AHCI_IS);
}
static void
ahci_intr_one_edge(void *data)
{
struct ahci_controller_irq *irq = data;
struct ahci_controller *ctlr = irq->ctlr;
void *arg;
int unit;
unit = irq->r_irq_rid - 1;
/* Some controllers have edge triggered IS. */
ATA_OUTL(ctlr->r_mem, AHCI_IS, 1 << unit);
if ((arg = ctlr->interrupt[unit].argument))
ctlr->interrupt[unit].function(arg);
ATA_RBL(ctlr->r_mem, AHCI_IS);
}
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);
struct resource *res;
long st;
int offset, size, unit;
unit = (intptr_t)device_get_ivars(child);
res = NULL;
switch (type) {
case SYS_RES_MEMORY:
if (unit >= 0) {
offset = AHCI_OFFSET + (unit << 7);
size = 128;
} else if (*rid == 0) {
offset = AHCI_EM_CTL;
size = 4;
} else {
offset = (ctlr->emloc & 0xffff0000) >> 14;
size = (ctlr->emloc & 0x0000ffff) << 2;
if (*rid != 1) {
if (*rid == 2 && (ctlr->capsem &
(AHCI_EM_XMT | AHCI_EM_SMB)) == 0)
offset += size;
else
break;
}
}
st = rman_get_start(ctlr->r_mem);
res = rman_reserve_resource(&ctlr->sc_iomem, st + offset,
st + offset + size - 1, size, 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);
}
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);
}
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);
}
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);
}
int
ahci_print_child(device_t dev, device_t child)
{
int retval, channel;
retval = bus_print_child_header(dev, child);
channel = (int)(intptr_t)device_get_ivars(child);
if (channel >= 0)
retval += printf(" at channel %d", channel);
retval += bus_print_child_footer(dev, child);
return (retval);
}
int
ahci_child_location_str(device_t dev, device_t child, char *buf,
size_t buflen)
{
int channel;
channel = (int)(intptr_t)device_get_ivars(child);
if (channel >= 0)
snprintf(buf, buflen, "channel=%d", channel);
return (0);
}
bus_dma_tag_t
ahci_get_dma_tag(device_t dev, device_t child)
{
struct ahci_controller *ctlr = device_get_softc(dev);
return (ctlr->dma_tag);
}
static int
ahci_ch_probe(device_t dev)
{
device_set_desc_copy(dev, "AHCI channel");
return (BUS_PROBE_DEFAULT);
}
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, i, sata_rev = 0;
u_int32_t version;
ch->dev = dev;
ch->unit = (intptr_t)device_get_ivars(dev);
ch->caps = ctlr->caps;
ch->caps2 = ctlr->caps2;
ch->start = ctlr->ch_start;
ch->quirks = ctlr->quirks;
ch->vendorid = ctlr->vendorid;
ch->deviceid = ctlr->deviceid;
ch->subvendorid = ctlr->subvendorid;
ch->subdeviceid = ctlr->subdeviceid;
ch->numslots = ((ch->caps & AHCI_CAP_NCS) >> AHCI_CAP_NCS_SHIFT) + 1;
mtx_init(&ch->mtx, "AHCI channel lock", NULL, MTX_DEF);
ch->pm_level = 0;
resource_int_value(device_get_name(dev),
device_get_unit(dev), "pm_level", &ch->pm_level);
STAILQ_INIT(&ch->doneq);
if (ch->pm_level > 3)
callout_init_mtx(&ch->pm_timer, &ch->mtx, 0);
callout_init_mtx(&ch->reset_timer, &ch->mtx, 0);
/* JMicron external ports (0) sometimes limited */
if ((ctlr->quirks & AHCI_Q_SATA1_UNIT0) && ch->unit == 0)
sata_rev = 1;
if (ch->quirks & AHCI_Q_SATA2)
sata_rev = 2;
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 = ch->numslots;
ch->user[i].caps = 0;
ch->curr[i] = ch->user[i];
if (ch->pm_level) {
ch->user[i].caps = CTS_SATA_CAPS_H_PMREQ |
CTS_SATA_CAPS_H_APST |
CTS_SATA_CAPS_D_PMREQ | CTS_SATA_CAPS_D_APST;
}
ch->user[i].caps |= CTS_SATA_CAPS_H_DMAAA |
CTS_SATA_CAPS_H_AN;
}
rid = 0;
if (!(ch->r_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&rid, RF_ACTIVE)))
return (ENXIO);
ahci_dmainit(dev);
ahci_slotsalloc(dev);
mtx_lock(&ch->mtx);
ahci_ch_init(dev);
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,
ctlr->direct ? ahci_ch_intr_direct : ahci_ch_intr,
ch, &ch->ih))) {
device_printf(dev, "Unable to setup interrupt\n");
error = ENXIO;
goto err1;
}
ch->chcaps = ATA_INL(ch->r_mem, AHCI_P_CMD);
version = ATA_INL(ctlr->r_mem, AHCI_VS);
if (version < 0x00010200 && (ctlr->caps & AHCI_CAP_FBSS))
ch->chcaps |= AHCI_P_CMD_FBSCP;
if (ch->caps2 & AHCI_CAP2_SDS)
ch->chscaps = ATA_INL(ch->r_mem, AHCI_P_DEVSLP);
if (bootverbose) {
device_printf(dev, "Caps:%s%s%s%s%s%s\n",
(ch->chcaps & AHCI_P_CMD_HPCP) ? " HPCP":"",
(ch->chcaps & AHCI_P_CMD_MPSP) ? " MPSP":"",
(ch->chcaps & AHCI_P_CMD_CPD) ? " CPD":"",
(ch->chcaps & AHCI_P_CMD_ESP) ? " ESP":"",
(ch->chcaps & AHCI_P_CMD_FBSCP) ? " FBSCP":"",
(ch->chscaps & AHCI_P_DEVSLP_DSP) ? " DSP":"");
}
/* 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), (struct mtx *)&ch->mtx,
min(2, ch->numslots),
(ch->caps & AHCI_CAP_SNCQ) ? ch->numslots : 0,
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;
}
if (ch->pm_level > 3) {
callout_reset(&ch->pm_timer,
(ch->pm_level == 4) ? hz / 1000 : hz / 8,
ahci_ch_pm, ch);
}
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);
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
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);
/* Forget about reset. */
if (ch->resetting) {
ch->resetting = 0;
xpt_release_simq(ch->sim, TRUE);
}
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);
callout_drain(&ch->reset_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_deinit(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_init(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(ch);
ahci_start(ch, 1);
return (0);
}
static int
ahci_ch_deinit(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(ch);
ahci_stop_fr(ch);
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_suspend(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
mtx_lock(&ch->mtx);
xpt_freeze_simq(ch->sim, 1);
/* Forget about reset. */
if (ch->resetting) {
ch->resetting = 0;
callout_stop(&ch->reset_timer);
xpt_release_simq(ch->sim, TRUE);
}
while (ch->oslots)
msleep(ch, &ch->mtx, PRIBIO, "ahcisusp", hz/100);
ahci_ch_deinit(dev);
mtx_unlock(&ch->mtx);
return (0);
}
static int
ahci_ch_resume(device_t dev)
{
struct ahci_channel *ch = device_get_softc(dev);
mtx_lock(&ch->mtx);
ahci_ch_init(dev);
ahci_reset(ch);
xpt_release_simq(ch->sim, TRUE);
mtx_unlock(&ch->mtx);
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),
DEVMETHOD_END
};
static driver_t ahcich_driver = {
"ahcich",
ahcich_methods,
sizeof(struct ahci_channel)
};
DRIVER_MODULE(ahcich, ahci, ahcich_driver, ahcich_devclass, NULL, NULL);
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;
size_t rfsize;
/* Command area. */
if (bus_dma_tag_create(bus_get_dma_tag(dev), 1024, 0,
BUS_SPACE_MAXADDR, 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,
BUS_DMA_ZERO, &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 (ch->chcaps & AHCI_P_CMD_FBSCP)
rfsize = 4096;
else
rfsize = 256;
if (bus_dma_tag_create(bus_get_dma_tag(dev), rfsize, 0,
BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
NULL, NULL, rfsize, 1, rfsize,
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,
rfsize, 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,
BUS_SPACE_MAXADDR, 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 = 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 = 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->ch = ch;
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 int
ahci_phy_check_events(struct ahci_channel *ch, u_int32_t serr)
{
if (((ch->pm_level == 0) && (serr & ATA_SE_PHY_CHANGED)) ||
((ch->pm_level != 0 || ch->listening) && (serr & ATA_SE_EXCHANGED))) {
u_int32_t status = ATA_INL(ch->r_mem, AHCI_P_SSTS);
union ccb *ccb;
if (bootverbose) {
if ((status & ATA_SS_DET_MASK) != ATA_SS_DET_NO_DEVICE)
device_printf(ch->dev, "CONNECT requested\n");
else
device_printf(ch->dev, "DISCONNECT requested\n");
}
ahci_reset(ch);
if ((ccb = xpt_alloc_ccb_nowait()) == NULL)
return (0);
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 (0);
}
xpt_rescan(ccb);
return (1);
}
return (0);
}
static void
ahci_cpd_check_events(struct ahci_channel *ch)
{
u_int32_t status;
union ccb *ccb;
device_t dev;
if (ch->pm_level == 0)
return;
status = ATA_INL(ch->r_mem, AHCI_P_CMD);
if ((status & AHCI_P_CMD_CPD) == 0)
return;
if (bootverbose) {
dev = ch->dev;
if (status & AHCI_P_CMD_CPS) {
device_printf(dev, "COLD CONNECT requested\n");
} else
device_printf(dev, "COLD DISCONNECT requested\n");
}
ahci_reset(ch);
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
ahci_notify_events(struct ahci_channel *ch, u_int32_t status)
{
struct cam_path *dpath;
int i;
if (ch->caps & AHCI_CAP_SSNTF)
ATA_OUTL(ch->r_mem, AHCI_P_SNTF, status);
if (bootverbose)
device_printf(ch->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_done(struct ahci_channel *ch, union ccb *ccb)
{
mtx_assert(&ch->mtx, MA_OWNED);
if ((ccb->ccb_h.func_code & XPT_FC_QUEUED) == 0 ||
ch->batch == 0) {
xpt_done(ccb);
return;
}
STAILQ_INSERT_TAIL(&ch->doneq, &ccb->ccb_h, sim_links.stqe);
}
static void
ahci_ch_intr(void *arg)
{
struct ahci_channel *ch = (struct ahci_channel *)arg;
uint32_t istatus;
/* Read interrupt statuses. */
istatus = ATA_INL(ch->r_mem, AHCI_P_IS);
if (istatus == 0)
return;
mtx_lock(&ch->mtx);
ahci_ch_intr_main(ch, istatus);
mtx_unlock(&ch->mtx);
}
static void
ahci_ch_intr_direct(void *arg)
{
struct ahci_channel *ch = (struct ahci_channel *)arg;
struct ccb_hdr *ccb_h;
uint32_t istatus;
STAILQ_HEAD(, ccb_hdr) tmp_doneq = STAILQ_HEAD_INITIALIZER(tmp_doneq);
/* Read interrupt statuses. */
istatus = ATA_INL(ch->r_mem, AHCI_P_IS);
if (istatus == 0)
return;
mtx_lock(&ch->mtx);
ch->batch = 1;
ahci_ch_intr_main(ch, istatus);
ch->batch = 0;
/*
* Prevent the possibility of issues caused by processing the queue
* while unlocked below by moving the contents to a local queue.
*/
STAILQ_CONCAT(&tmp_doneq, &ch->doneq);
mtx_unlock(&ch->mtx);
while ((ccb_h = STAILQ_FIRST(&tmp_doneq)) != NULL) {
STAILQ_REMOVE_HEAD(&tmp_doneq, sim_links.stqe);
xpt_done_direct((union ccb *)ccb_h);
}
}
static void
ahci_ch_pm(void *arg)
{
struct ahci_channel *ch = (struct ahci_channel *)arg;
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_main(struct ahci_channel *ch, uint32_t istatus)
{
uint32_t cstatus, serr = 0, sntf = 0, ok, err;
enum ahci_err_type et;
int i, ccs, port, reset = 0;
/* Clear interrupt statuses. */
ATA_OUTL(ch->r_mem, AHCI_P_IS, istatus);
/* Read command statuses. */
if (ch->numtslots != 0)
cstatus = ATA_INL(ch->r_mem, AHCI_P_SACT);
else
cstatus = 0;
if (ch->numrslots != ch->numtslots)
cstatus |= ATA_INL(ch->r_mem, AHCI_P_CI);
/* Read SNTF in one of possible ways. */
if ((istatus & AHCI_P_IX_SDB) &&
(ch->pm_present || ch->curr[0].atapi != 0)) {
if (ch->caps & AHCI_CAP_SSNTF)
sntf = ATA_INL(ch->r_mem, AHCI_P_SNTF);
else if (ch->fbs_enabled) {
u_int8_t *fis = ch->dma.rfis + 0x58;
for (i = 0; i < 16; i++) {
if (fis[1] & 0x80) {
fis[1] &= 0x7f;
sntf |= 1 << i;
}
fis += 256;
}
} else {
u_int8_t *fis = ch->dma.rfis + 0x58;
if (fis[1] & 0x80)
sntf = (1 << (fis[1] & 0x0f));
}
}
/* 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);
reset = ahci_phy_check_events(ch, serr);
}
}
/* Process cold presence detection events */
if ((istatus & AHCI_P_IX_CPD) && !reset)
ahci_cpd_check_events(ch);
/* 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)) {
ccs = (ATA_INL(ch->r_mem, AHCI_P_CMD) & AHCI_P_CMD_CCS_MASK)
>> AHCI_P_CMD_CCS_SHIFT;
//device_printf(dev, "%s ERROR is %08x cs %08x ss %08x rs %08x tfd %02x serr %08x fbs %08x ccs %d\n",
// __func__, istatus, cstatus, sstatus, ch->rslots, ATA_INL(ch->r_mem, AHCI_P_TFD),
// serr, ATA_INL(ch->r_mem, AHCI_P_FBS), ccs);
port = -1;
if (ch->fbs_enabled) {
uint32_t fbs = ATA_INL(ch->r_mem, AHCI_P_FBS);
if (fbs & AHCI_P_FBS_SDE) {
port = (fbs & AHCI_P_FBS_DWE)
>> AHCI_P_FBS_DWE_SHIFT;
} else {
for (i = 0; i < 16; i++) {
if (ch->numrslotspd[i] == 0)
continue;
if (port == -1)
port = i;
else if (port != i) {
port = -2;
break;
}
}
}
}
err = ch->rslots & cstatus;
} else {
ccs = 0;
err = 0;
port = -1;
}
/* Complete all successfull commands. */
ok = ch->rslots & ~cstatus;
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;
}
ahci_done(ch, fccb);
}
for (i = 0; i < ch->numslots; i++) {
/* XXX: reqests in loading state. */
if (((err >> i) & 1) == 0)
continue;
if (port >= 0 &&
ch->slot[i].ccb->ccb_h.target_id != port)
continue;
if (istatus & AHCI_P_IX_TFE) {
if (port != -2) {
/* Task File Error */
if (ch->numtslotspd[
ch->slot[i].ccb->ccb_h.target_id] == 0) {
/* Untagged operation. */
if (i == ccs)
et = AHCI_ERR_TFE;
else
et = AHCI_ERR_INNOCENT;
} else {
/* Tagged operation. */
et = AHCI_ERR_NCQ;
}
} else {
et = AHCI_ERR_TFE;
ch->fatalerr = 1;
}
} else if (istatus & AHCI_P_IX_IF) {
if (ch->numtslots == 0 && i != ccs && port != -2)
et = AHCI_ERR_INNOCENT;
else
et = AHCI_ERR_SATA;
} else
et = AHCI_ERR_INVALID;
ahci_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 && !ch->recoverycmd)
ATA_OUTL(ch->r_mem, AHCI_P_FBS, AHCI_P_FBS_EN | AHCI_P_FBS_DEC);
}
/* Process NOTIFY events */
if (sntf)
ahci_notify_events(ch, sntf);
}
/* Must be called with channel locked. */
static int
ahci_check_collision(struct ahci_channel *ch, union ccb *ccb)
{
int t = ccb->ccb_h.target_id;
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) & (0xffffffff >> (32 -
ch->curr[t].tags))) == 0)
return (1);
/* If we have FBS */
if (ch->fbs_enabled) {
/* Tagged command while untagged are active. */
if (ch->numrslotspd[t] != 0 && ch->numtslotspd[t] == 0)
return (1);
} else {
/* 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 {
/* If we have FBS */
if (ch->fbs_enabled) {
/* Untagged command while tagged are active. */
if (ch->numrslotspd[t] != 0 && ch->numtslotspd[t] != 0)
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(struct ahci_channel *ch, union ccb *ccb)
{
struct ahci_slot *slot;
int tag, tags;
/* Choose empty slot. */
tags = ch->numslots;
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;
if (ch->lastslot + 1 < tags)
tag = ffs(~(ch->oslots >> (ch->lastslot + 1)));
else
tag = 0;
if (tag == 0 || tag + ch->lastslot >= tags)
tag = ffs(~ch->oslots) - 1;
else
tag += ch->lastslot;
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->oslots |= (1 << tag);
ch->numrslots++;
ch->numrslotspd[ccb->ccb_h.target_id]++;
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_FPDMA)) {
ch->numtslots++;
ch->numtslotspd[ccb->ccb_h.target_id]++;
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 << tag);
if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
slot->state = AHCI_SLOT_LOADING;
bus_dmamap_load_ccb(ch->dma.data_tag, slot->dma.data_map, ccb,
ahci_dmasetprd, slot, 0);
} else {
slot->dma.nsegs = 0;
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 = slot->ch;
struct ahci_cmd_tab *ctp;
struct ahci_dma_prd *prd;
int i;
if (error) {
device_printf(ch->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)
{
struct ahci_channel *ch = slot->ch;
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, i, softreset;
uint8_t *fis = ch->dma.rfis + 0x40;
uint8_t val;
/* 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(ch, 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->cmd_flags = htole16(
(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));
clp->prd_length = htole16(slot->dma.nsegs);
/* Special handling for Soft Reset command. */
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL)) {
if (ccb->ataio.cmd.control & ATA_A_RESET) {
softreset = 1;
/* Kick controller into sane state */
ahci_stop(ch);
ahci_clo(ch);
ahci_start(ch, 0);
clp->cmd_flags |= AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY;
} else {
softreset = 2;
/* Prepare FIS receive area for check. */
for (i = 0; i < 20; i++)
fis[i] = 0xff;
}
} else
softreset = 0;
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_PREREAD | 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);
}
/* If FBS is enabled, set PMP port. */
if (ch->fbs_enabled) {
ATA_OUTL(ch->r_mem, AHCI_P_FBS, AHCI_P_FBS_EN |
(port << AHCI_P_FBS_DEV_SHIFT));
}
/* 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 || softreset)) {
int count, timeout = ccb->ccb_h.timeout * 100;
enum ahci_err_type et = AHCI_ERR_NONE;
for (count = 0; count < timeout; count++) {
DELAY(10);
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) &&
softreset != 1) {
#if 0
device_printf(ch->dev,
"Poll error on slot %d, TFD: %04x\n",
slot->slot, ATA_INL(ch->r_mem, AHCI_P_TFD));
#endif
et = AHCI_ERR_TFE;
break;
}
/* Workaround for ATI SB600/SB700 chipsets. */
if (ccb->ccb_h.target_id == 15 &&
(ch->quirks & AHCI_Q_ATI_PMP_BUG) &&
(ATA_INL(ch->r_mem, AHCI_P_IS) & AHCI_P_IX_IPM)) {
et = AHCI_ERR_TIMEOUT;
break;
}
}
/*
* Marvell HBAs with non-RAID firmware do not wait for
* readiness after soft reset, so we have to wait here.
* Marvell RAIDs do not have this problem, but instead
* sometimes forget to update FIS receive area, breaking
* this wait.
*/
if ((ch->quirks & AHCI_Q_NOBSYRES) == 0 &&
(ch->quirks & AHCI_Q_ATI_PMP_BUG) == 0 &&
softreset == 2 && et == AHCI_ERR_NONE) {
for ( ; count < timeout; count++) {
bus_dmamap_sync(ch->dma.rfis_tag,
ch->dma.rfis_map, BUS_DMASYNC_POSTREAD);
val = fis[2];
bus_dmamap_sync(ch->dma.rfis_tag,
ch->dma.rfis_map, BUS_DMASYNC_PREREAD);
if ((val & ATA_S_BUSY) == 0)
break;
DELAY(10);
}
}
if (timeout && (count >= timeout)) {
device_printf(ch->dev, "Poll timeout on slot %d port %d\n",
slot->slot, port);
device_printf(ch->dev, "is %08x cs %08x ss %08x "
"rs %08x tfd %02x serr %08x cmd %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),
ATA_INL(ch->r_mem, AHCI_P_CMD));
et = AHCI_ERR_TIMEOUT;
}
/* Kick controller into sane state and enable FBS. */
if (softreset == 2)
ch->eslots |= (1 << slot->slot);
ahci_end_transaction(slot, et);
return;
}
/* Start command execution timeout */
callout_reset_sbt(&slot->timeout, SBT_1MS * ccb->ccb_h.timeout / 2,
0, (timeout_t*)ahci_timeout, slot, 0);
return;
}
/* Must be called with channel locked. */
static void
ahci_process_timeout(struct ahci_channel *ch)
{
int i;
mtx_assert(&ch->mtx, MA_OWNED);
/* 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_TIMEOUT);
}
}
/* Must be called with channel locked. */
static void
ahci_rearm_timeout(struct ahci_channel *ch)
{
int i;
mtx_assert(&ch->mtx, MA_OWNED);
for (i = 0; i < ch->numslots; i++) {
struct ahci_slot *slot = &ch->slot[i];
/* Do we have a running request on slot? */
if (slot->state < AHCI_SLOT_RUNNING)
continue;
if ((ch->toslots & (1 << i)) == 0)
continue;
callout_reset_sbt(&slot->timeout,
SBT_1MS * slot->ccb->ccb_h.timeout / 2, 0,
(timeout_t*)ahci_timeout, slot, 0);
}
}
/* Locked by callout mechanism. */
static void
ahci_timeout(struct ahci_slot *slot)
{
struct ahci_channel *ch = slot->ch;
device_t dev = ch->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 ||
ch->fbs_enabled || ch->wrongccs)
slot->state = AHCI_SLOT_EXECUTING;
else if ((ch->rslots & (1 << ccs)) == 0) {
ch->wrongccs = 1;
slot->state = AHCI_SLOT_EXECUTING;
}
callout_reset_sbt(&slot->timeout,
SBT_1MS * slot->ccb->ccb_h.timeout / 2, 0,
(timeout_t*)ahci_timeout, slot, 0);
return;
}
device_printf(dev, "Timeout on slot %d port %d\n",
slot->slot, slot->ccb->ccb_h.target_id & 0x0f);
device_printf(dev, "is %08x cs %08x ss %08x rs %08x tfd %02x "
"serr %08x cmd %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),
ATA_INL(ch->r_mem, AHCI_P_CMD));
/* 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;
}
ahci_done(ch, fccb);
}
if (!ch->fbs_enabled && !ch->wrongccs) {
/* Without FBS we know real timeout source. */
ch->fatalerr = 1;
/* 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);
}
} else {
/* With FBS we wait for other commands timeout and pray. */
if (ch->toslots == 0)
xpt_freeze_simq(ch->sim, 1);
ch->toslots |= (1 << slot->slot);
if ((ch->rslots & ~ch->toslots) == 0)
ahci_process_timeout(ch);
else
device_printf(dev, " ... waiting for slots %08x\n",
ch->rslots & ~ch->toslots);
}
}
/* Must be called with channel locked. */
static void
ahci_end_transaction(struct ahci_slot *slot, enum ahci_err_type et)
{
struct ahci_channel *ch = slot->ch;
union ccb *ccb = slot->ccb;
struct ahci_cmd_list *clp;
int lastto;
uint32_t sig;
bus_dmamap_sync(ch->dma.work_tag, ch->dma.work_map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
clp = (struct ahci_cmd_list *)
(ch->dma.work + AHCI_CL_OFFSET + (AHCI_CL_SIZE * slot->slot));
/* 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;
bus_dmamap_sync(ch->dma.rfis_tag, ch->dma.rfis_map,
BUS_DMASYNC_POSTREAD);
if (ch->fbs_enabled) {
fis += ccb->ccb_h.target_id * 256;
res->status = fis[2];
res->error = fis[3];
} else {
uint16_t tfd = ATA_INL(ch->r_mem, AHCI_P_TFD);
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];
/*
* Some weird controllers do not return signature in
* FIS receive area. Read it from PxSIG register.
*/
if ((ch->quirks & AHCI_Q_ALTSIG) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL) &&
(ccb->ataio.cmd.control & ATA_A_RESET) == 0) {
sig = ATA_INL(ch->r_mem, AHCI_P_SIG);
res->lba_high = sig >> 24;
res->lba_mid = sig >> 16;
res->lba_low = sig >> 8;
res->sector_count = sig;
}
} else
bzero(res, sizeof(*res));
if ((ccb->ataio.cmd.flags & CAM_ATAIO_FPDMA) == 0 &&
(ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE &&
(ch->quirks & AHCI_Q_NOCOUNT) == 0) {
ccb->ataio.resid =
ccb->ataio.dxfer_len - le32toh(clp->bytecount);
}
} else {
if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE &&
(ch->quirks & AHCI_Q_NOCOUNT) == 0) {
ccb->csio.resid =
ccb->csio.dxfer_len - le32toh(clp->bytecount);
}
}
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);
}
if (et != AHCI_ERR_NONE)
ch->eslots |= (1 << slot->slot);
/* In case of error, freeze device for proper recovery. */
if ((et != AHCI_ERR_NONE) && (!ch->recoverycmd) &&
!(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->recoverycmd) {
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:
if (!ch->recoverycmd) {
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->oslots &= ~(1 << slot->slot);
ch->rslots &= ~(1 << slot->slot);
ch->aslots &= ~(1 << slot->slot);
slot->state = AHCI_SLOT_EMPTY;
slot->ccb = NULL;
/* Update channel stats. */
ch->numrslots--;
ch->numrslotspd[ccb->ccb_h.target_id]--;
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_FPDMA)) {
ch->numtslots--;
ch->numtslotspd[ccb->ccb_h.target_id]--;
}
/* Cancel timeout state if request completed normally. */
if (et != AHCI_ERR_TIMEOUT) {
lastto = (ch->toslots == (1 << slot->slot));
ch->toslots &= ~(1 << slot->slot);
if (lastto)
xpt_release_simq(ch->sim, TRUE);
}
/* 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(ch, ccb);
return;
}
/* If it was our READ LOG command - process it. */
if (ccb->ccb_h.recovery_type == RECOVERY_READ_LOG) {
ahci_process_read_log(ch, ccb);
/* If it was our REQUEST SENSE command - process it. */
} else if (ccb->ccb_h.recovery_type == RECOVERY_REQUEST_SENSE) {
ahci_process_request_sense(ch, ccb);
/* If it was NCQ or ATAPI command error, put result on hold. */
} else if (et == AHCI_ERR_NCQ ||
((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR &&
(ccb->ccb_h.flags & CAM_DIS_AUTOSENSE) == 0)) {
ch->hold[slot->slot] = ccb;
ch->numhslots++;
} else
ahci_done(ch, ccb);
/* If we have no other active commands, ... */
if (ch->rslots == 0) {
/* if there was fatal error - reset port. */
if (ch->toslots != 0 || ch->fatalerr) {
ahci_reset(ch);
} else {
/* if we have slots in error, we can reinit port. */
if (ch->eslots != 0) {
ahci_stop(ch);
ahci_clo(ch);
ahci_start(ch, 1);
}
/* if there commands on hold, we can do READ LOG. */
if (!ch->recoverycmd && ch->numhslots)
ahci_issue_recovery(ch);
}
/* If all the rest of commands are in timeout - give them chance. */
} else if ((ch->rslots & ~ch->toslots) == 0 &&
et != AHCI_ERR_TIMEOUT)
ahci_rearm_timeout(ch);
/* Unfreeze frozen command. */
if (ch->frozen && !ahci_check_collision(ch, ch->frozen)) {
union ccb *fccb = ch->frozen;
ch->frozen = NULL;
ahci_begin_transaction(ch, fccb);
xpt_release_simq(ch->sim, TRUE);
}
/* Start PM timer. */
if (ch->numrslots == 0 && ch->pm_level > 3 &&
(ch->curr[ch->pm_present ? 15 : 0].caps & CTS_SATA_CAPS_D_PMREQ)) {
callout_schedule(&ch->pm_timer,
(ch->pm_level == 4) ? hz / 1000 : hz / 8);
}
}
static void
ahci_issue_recovery(struct ahci_channel *ch)
{
union ccb *ccb;
struct ccb_ataio *ataio;
struct ccb_scsiio *csio;
int i;
/* Find some held command. */
for (i = 0; i < ch->numslots; i++) {
if (ch->hold[i])
break;
}
ccb = xpt_alloc_ccb_nowait();
if (ccb == NULL) {
device_printf(ch->dev, "Unable to allocate recovery command\n");
completeall:
/* We can't do anything -- complete held commands. */
for (i = 0; i < ch->numslots; i++) {
if (ch->hold[i] == NULL)
continue;
ch->hold[i]->ccb_h.status &= ~CAM_STATUS_MASK;
ch->hold[i]->ccb_h.status |= CAM_RESRC_UNAVAIL;
ahci_done(ch, ch->hold[i]);
ch->hold[i] = NULL;
ch->numhslots--;
}
ahci_reset(ch);
return;
}
ccb->ccb_h = ch->hold[i]->ccb_h; /* Reuse old header. */
if (ccb->ccb_h.func_code == XPT_ATA_IO) {
/* READ LOG */
ccb->ccb_h.recovery_type = RECOVERY_READ_LOG;
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) {
xpt_free_ccb(ccb);
device_printf(ch->dev,
"Unable to allocate memory for READ LOG command\n");
goto completeall;
}
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;
} else {
/* REQUEST SENSE */
ccb->ccb_h.recovery_type = RECOVERY_REQUEST_SENSE;
ccb->ccb_h.recovery_slot = i;
ccb->ccb_h.func_code = XPT_SCSI_IO;
ccb->ccb_h.flags = CAM_DIR_IN;
ccb->ccb_h.status = 0;
ccb->ccb_h.timeout = 1000; /* 1s should be enough. */
csio = &ccb->csio;
csio->data_ptr = (void *)&ch->hold[i]->csio.sense_data;
csio->dxfer_len = ch->hold[i]->csio.sense_len;
csio->cdb_len = 6;
bzero(&csio->cdb_io, sizeof(csio->cdb_io));
csio->cdb_io.cdb_bytes[0] = 0x03;
csio->cdb_io.cdb_bytes[4] = csio->dxfer_len;
}
/* Freeze SIM while doing recovery. */
ch->recoverycmd = 1;
xpt_freeze_simq(ch->sim, 1);
ahci_begin_transaction(ch, ccb);
}
static void
ahci_process_read_log(struct ahci_channel *ch, union ccb *ccb)
{
uint8_t *data;
struct ata_res *res;
int i;
ch->recoverycmd = 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 (ch->hold[i]->ccb_h.func_code != XPT_ATA_IO)
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;
}
ahci_done(ch, ch->hold[i]);
ch->hold[i] = NULL;
ch->numhslots--;
}
} else {
if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
device_printf(ch->dev, "Error while READ LOG EXT\n");
else if ((data[0] & 0x80) == 0) {
device_printf(ch->dev, "Non-queued command error in READ LOG EXT\n");
}
for (i = 0; i < ch->numslots; i++) {
if (!ch->hold[i])
continue;
if (ch->hold[i]->ccb_h.func_code != XPT_ATA_IO)
continue;
ahci_done(ch, ch->hold[i]);
ch->hold[i] = NULL;
ch->numhslots--;
}
}
free(ccb->ataio.data_ptr, M_AHCI);
xpt_free_ccb(ccb);
xpt_release_simq(ch->sim, TRUE);
}
static void
ahci_process_request_sense(struct ahci_channel *ch, union ccb *ccb)
{
int i;
ch->recoverycmd = 0;
i = ccb->ccb_h.recovery_slot;
if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
ch->hold[i]->ccb_h.status |= CAM_AUTOSNS_VALID;
} else {
ch->hold[i]->ccb_h.status &= ~CAM_STATUS_MASK;
ch->hold[i]->ccb_h.status |= CAM_AUTOSENSE_FAIL;
}
ahci_done(ch, ch->hold[i]);
ch->hold[i] = NULL;
ch->numhslots--;
xpt_free_ccb(ccb);
xpt_release_simq(ch->sim, TRUE);
}
static void
ahci_start(struct ahci_channel *ch, int fbs)
{
u_int32_t cmd;
/* Run the channel start callback, if any. */
if (ch->start)
ch->start(ch);
/* 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);
/* Configure FIS-based switching if supported. */
if (ch->chcaps & AHCI_P_CMD_FBSCP) {
ch->fbs_enabled = (fbs && ch->pm_present) ? 1 : 0;
ATA_OUTL(ch->r_mem, AHCI_P_FBS,
ch->fbs_enabled ? AHCI_P_FBS_EN : 0);
}
/* Start operations on this channel */
cmd = ATA_INL(ch->r_mem, AHCI_P_CMD);
cmd &= ~AHCI_P_CMD_PMA;
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(struct ahci_channel *ch)
{
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(10);
if (timeout++ > 50000) {
device_printf(ch->dev, "stopping AHCI engine failed\n");
break;
}
} while (ATA_INL(ch->r_mem, AHCI_P_CMD) & AHCI_P_CMD_CR);
ch->eslots = 0;
}
static void
ahci_clo(struct ahci_channel *ch)
{
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(10);
if (timeout++ > 50000) {
device_printf(ch->dev, "executing CLO failed\n");
break;
}
} while (ATA_INL(ch->r_mem, AHCI_P_CMD) & AHCI_P_CMD_CLO);
}
}
static void
ahci_stop_fr(struct ahci_channel *ch)
{
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(10);
if (timeout++ > 50000) {
device_printf(ch->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(struct ahci_channel *ch)
{
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(struct ahci_channel *ch, int t, int t0)
{
int timeout = 0;
uint32_t val;
while ((val = ATA_INL(ch->r_mem, AHCI_P_TFD)) &
(ATA_S_BUSY | ATA_S_DRQ)) {
if (timeout > t) {
if (t != 0) {
device_printf(ch->dev,
"AHCI reset: device not ready after %dms "
"(tfd = %08x)\n",
MAX(t, 0) + t0, val);
}
return (EBUSY);
}
DELAY(1000);
timeout++;
}
if (bootverbose)
device_printf(ch->dev, "AHCI reset: device ready after %dms\n",
timeout + t0);
return (0);
}
static void
ahci_reset_to(void *arg)
{
struct ahci_channel *ch = arg;
if (ch->resetting == 0)
return;
ch->resetting--;
if (ahci_wait_ready(ch, ch->resetting == 0 ? -1 : 0,
(310 - ch->resetting) * 100) == 0) {
ch->resetting = 0;
ahci_start(ch, 1);
xpt_release_simq(ch->sim, TRUE);
return;
}
if (ch->resetting == 0) {
ahci_clo(ch);
ahci_start(ch, 1);
xpt_release_simq(ch->sim, TRUE);
return;
}
callout_schedule(&ch->reset_timer, hz / 10);
}
static void
ahci_reset(struct ahci_channel *ch)
{
struct ahci_controller *ctlr = device_get_softc(device_get_parent(ch->dev));
int i;
xpt_freeze_simq(ch->sim, 1);
if (bootverbose)
device_printf(ch->dev, "AHCI reset...\n");
/* Forget about previous reset. */
if (ch->resetting) {
ch->resetting = 0;
callout_stop(&ch->reset_timer);
xpt_release_simq(ch->sim, TRUE);
}
/* 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;
}
ahci_done(ch, fccb);
}
/* Kill the engine and requeue all running commands. */
ahci_stop(ch);
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;
ahci_done(ch, ch->hold[i]);
ch->hold[i] = NULL;
ch->numhslots--;
}
if (ch->toslots != 0)
xpt_release_simq(ch->sim, TRUE);
ch->eslots = 0;
ch->toslots = 0;
ch->wrongccs = 0;
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(ch)) {
if (bootverbose)
device_printf(ch->dev,
"AHCI reset: device not found\n");
ch->devices = 0;
/* Enable wanted port interrupts */
ATA_OUTL(ch->r_mem, AHCI_P_IE,
(((ch->pm_level != 0) ? AHCI_P_IX_CPD | AHCI_P_IX_MP : 0) |
AHCI_P_IX_PRC | AHCI_P_IX_PC));
xpt_release_simq(ch->sim, TRUE);
return;
}
if (bootverbose)
device_printf(ch->dev, "AHCI reset: device found\n");
/* Wait for clearing busy status. */
if (ahci_wait_ready(ch, dumping ? 31000 : 0, 0)) {
if (dumping)
ahci_clo(ch);
else
ch->resetting = 310;
}
ch->devices = 1;
/* Enable wanted port interrupts */
ATA_OUTL(ch->r_mem, AHCI_P_IE,
(((ch->pm_level != 0) ? AHCI_P_IX_CPD | AHCI_P_IX_MP : 0) |
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 : 0) | AHCI_P_IX_PC |
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 (ch->resetting)
callout_reset(&ch->reset_timer, hz / 10, ahci_reset_to, ch);
else {
ahci_start(ch, 1);
xpt_release_simq(ch->sim, TRUE);
}
}
static int
ahci_setup_fis(struct ahci_channel *ch, struct ahci_cmd_tab *ctp, union ccb *ccb, int tag)
{
u_int8_t *fis = &ctp->cfis[0];
bzero(fis, 20);
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;
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);
bzero(ctp->acmd + ccb->csio.cdb_len, 32 - 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, found = 0;
/* Wait up to 100ms for "connect well" */
for (timeout = 0; timeout < 1000 ; timeout++) {
status = ATA_INL(ch->r_mem, AHCI_P_SSTS);
if ((status & ATA_SS_DET_MASK) != ATA_SS_DET_NO_DEVICE)
found = 1;
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);
}
if (found == 0 && timeout >= 100)
break;
DELAY(100);
}
if (timeout >= 1000 || !found) {
if (bootverbose) {
device_printf(ch->dev,
"SATA connect timeout time=%dus status=%08x\n",
timeout * 100, status);
}
return (0);
}
if (bootverbose) {
device_printf(ch->dev, "SATA connect time=%dus status=%08x\n",
timeout * 100, status);
}
/* Clear SATA error register */
ATA_OUTL(ch->r_mem, AHCI_P_SERR, 0xffffffff);
return (1);
}
static int
ahci_sata_phy_reset(struct ahci_channel *ch)
{
int sata_rev;
uint32_t val;
if (ch->listening) {
val = ATA_INL(ch->r_mem, AHCI_P_CMD);
val |= AHCI_P_CMD_SUD;
ATA_OUTL(ch->r_mem, AHCI_P_CMD, val);
ch->listening = 0;
}
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, AHCI_P_SCTL,
ATA_SC_DET_RESET | val |
ATA_SC_IPM_DIS_PARTIAL | ATA_SC_IPM_DIS_SLUMBER);
DELAY(1000);
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)));
if (!ahci_sata_connect(ch)) {
if (ch->caps & AHCI_CAP_SSS) {
val = ATA_INL(ch->r_mem, AHCI_P_CMD);
val &= ~AHCI_P_CMD_SUD;
ATA_OUTL(ch->r_mem, AHCI_P_CMD, val);
ch->listening = 1;
} else if (ch->pm_level > 0)
ATA_OUTL(ch->r_mem, AHCI_P_SCTL, ATA_SC_DET_DISABLE);
return (0);
}
return (1);
}
static int
ahci_check_ids(struct ahci_channel *ch, union ccb *ccb)
{
if (ccb->ccb_h.target_id > ((ch->caps & AHCI_CAP_SPM) ? 15 : 0)) {
ccb->ccb_h.status = CAM_TID_INVALID;
ahci_done(ch, ccb);
return (-1);
}
if (ccb->ccb_h.target_lun != 0) {
ccb->ccb_h.status = CAM_LUN_INVALID;
ahci_done(ch, ccb);
return (-1);
}
return (0);
}
static void
ahciaction(struct cam_sim *sim, union ccb *ccb)
{
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);
switch (ccb->ccb_h.func_code) {
/* Common cases first */
case XPT_ATA_IO: /* Execute the requested I/O operation */
case XPT_SCSI_IO:
if (ahci_check_ids(ch, 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;
}
ccb->ccb_h.recovery_type = RECOVERY_NONE;
/* Check for command collision. */
if (ahci_check_collision(ch, 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(ch, 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 ahci_device *d;
if (ahci_check_ids(ch, 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(ch->numslots, 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 (cts->xport_specific.sata.valid & CTS_SATA_VALID_ATAPI)
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 ahci_device *d;
uint32_t status;
if (ahci_check_ids(ch, 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_UNSPECIFIED;
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, AHCI_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) {
if (ch->caps & (AHCI_CAP_PSC | AHCI_CAP_SSC))
cts->xport_specific.sata.caps |= CTS_SATA_CAPS_H_PMREQ;
if (ch->caps2 & AHCI_CAP2_APST)
cts->xport_specific.sata.caps |= CTS_SATA_CAPS_H_APST;
}
if ((ch->caps & AHCI_CAP_SNCQ) &&
(ch->quirks & AHCI_Q_NOAA) == 0)
cts->xport_specific.sata.caps |= CTS_SATA_CAPS_H_DMAAA;
cts->xport_specific.sata.caps |= CTS_SATA_CAPS_H_AN;
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 */
ahci_reset(ch);
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;
cpi->version_num = 1; /* XXX??? */
cpi->hba_inquiry = PI_SDTR_ABLE;
if (ch->caps & AHCI_CAP_SNCQ)
cpi->hba_inquiry |= PI_TAG_ABLE;
if (ch->caps & AHCI_CAP_SPM)
cpi->hba_inquiry |= PI_SATAPM;
cpi->target_sprt = 0;
cpi->hba_misc = PIM_SEQSCAN | PIM_UNMAPPED;
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 (ch->quirks & AHCI_Q_MAXIO_64K)
cpi->maxio = min(cpi->maxio, 128 * 512);
cpi->hba_vendor = ch->vendorid;
cpi->hba_device = ch->deviceid;
cpi->hba_subvendor = ch->subvendorid;
cpi->hba_subdevice = ch->subdeviceid;
cpi->ccb_h.status = CAM_REQ_CMP;
break;
}
default:
ccb->ccb_h.status = CAM_REQ_INVALID;
break;
}
ahci_done(ch, ccb);
}
static void
ahcipoll(struct cam_sim *sim)
{
struct ahci_channel *ch = (struct ahci_channel *)cam_sim_softc(sim);
uint32_t istatus;
/* Read interrupt statuses and process if any. */
istatus = ATA_INL(ch->r_mem, AHCI_P_IS);
if (istatus != 0)
ahci_ch_intr_main(ch, istatus);
if (ch->resetting != 0 &&
(--ch->resetpolldiv <= 0 || !callout_pending(&ch->reset_timer))) {
ch->resetpolldiv = 1000;
ahci_reset_to(ch);
}
}
MODULE_VERSION(ahci, 1);
MODULE_DEPEND(ahci, cam, 1, 1, 1);
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