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freebsd-skq/sys/dev/ahci/ahci.c
Alexander Motin 45e1aff18a Clear all ports interrupt status bits in single write. Clearing one by one 
causes additional MSIs messages sent if several ports asked for attention
same time. Time window before clearing is not important, as these interrupts
are level triggered by interrupt source.
2009-12-21 21:27:56 +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(device_t dev, 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");
static struct {
uint32_t id;
const char *name;
int quirks;
#define AHCI_Q_NOFORCE 1
#define AHCI_Q_NOPMP 2
#define AHCI_Q_NONCQ 4
#define AHCI_Q_1CH 8
#define AHCI_Q_2CH 16
#define AHCI_Q_4CH 32
#define AHCI_Q_EDGEIS 64
} ahci_ids[] = {
{0x43801002, "ATI IXP600", 0},
{0x43901002, "ATI IXP700", 0},
{0x43911002, "ATI IXP700", 0},
{0x43921002, "ATI IXP700", 0},
{0x43931002, "ATI IXP700", 0},
{0x43941002, "ATI IXP800", 0},
{0x43951002, "ATI IXP800", 0},
{0x26528086, "Intel ICH6", 0},
{0x26538086, "Intel ICH6M", 0},
{0x26818086, "Intel ESB2", 0},
{0x26828086, "Intel ESB2", 0},
{0x26838086, "Intel ESB2", 0},
{0x27c18086, "Intel ICH7", 0},
{0x27c38086, "Intel ICH7", 0},
{0x27c58086, "Intel ICH7M", 0},
{0x27c68086, "Intel ICH7M", 0},
{0x28218086, "Intel ICH8", 0},
{0x28228086, "Intel ICH8", 0},
{0x28248086, "Intel ICH8", 0},
{0x28298086, "Intel ICH8M", 0},
{0x282a8086, "Intel ICH8M", 0},
{0x29228086, "Intel ICH9", 0},
{0x29238086, "Intel ICH9", 0},
{0x29248086, "Intel ICH9", 0},
{0x29258086, "Intel ICH9", 0},
{0x29278086, "Intel ICH9", 0},
{0x29298086, "Intel ICH9M", 0},
{0x292a8086, "Intel ICH9M", 0},
{0x292b8086, "Intel ICH9M", 0},
{0x292c8086, "Intel ICH9M", 0},
{0x292f8086, "Intel ICH9M", 0},
{0x294d8086, "Intel ICH9", 0},
{0x294e8086, "Intel ICH9M", 0},
{0x3a058086, "Intel ICH10", 0},
{0x3a228086, "Intel ICH10", 0},
{0x3a258086, "Intel ICH10", 0},
{0x3b228086, "Intel PCH", 0},
{0x3b238086, "Intel PCH", 0},
{0x3b248086, "Intel PCH", 0},
{0x3b258086, "Intel PCH", 0},
{0x3b298086, "Intel PCH", 0},
{0x3b2b8086, "Intel PCH", 0},
{0x3b2c8086, "Intel PCH", 0},
{0x3b2f8086, "Intel PCH", 0},
{0x2361197b, "JMicron JMB361", AHCI_Q_NOFORCE},
{0x2363197b, "JMicron JMB363", AHCI_Q_NOFORCE},
{0x2365197b, "JMicron JMB365", AHCI_Q_NOFORCE},
{0x2366197b, "JMicron JMB366", AHCI_Q_NOFORCE},
{0x2368197b, "JMicron JMB368", AHCI_Q_NOFORCE},
{0x611111ab, "Marvell 88SX6111", AHCI_Q_NOFORCE|AHCI_Q_1CH|AHCI_Q_EDGEIS},
{0x612111ab, "Marvell 88SX6121", AHCI_Q_NOFORCE|AHCI_Q_2CH|AHCI_Q_EDGEIS},
{0x614111ab, "Marvell 88SX6141", AHCI_Q_NOFORCE|AHCI_Q_4CH|AHCI_Q_EDGEIS},
{0x614511ab, "Marvell 88SX6145", AHCI_Q_NOFORCE|AHCI_Q_4CH|AHCI_Q_EDGEIS},
{0x044c10de, "NVIDIA MCP65", 0},
{0x044d10de, "NVIDIA MCP65", 0},
{0x044e10de, "NVIDIA MCP65", 0},
{0x044f10de, "NVIDIA MCP65", 0},
{0x045c10de, "NVIDIA MCP65", 0},
{0x045d10de, "NVIDIA MCP65", 0},
{0x045e10de, "NVIDIA MCP65", 0},
{0x045f10de, "NVIDIA MCP65", 0},
{0x055010de, "NVIDIA MCP67", 0},
{0x055110de, "NVIDIA MCP67", 0},
{0x055210de, "NVIDIA MCP67", 0},
{0x055310de, "NVIDIA MCP67", 0},
{0x055410de, "NVIDIA MCP67", 0},
{0x055510de, "NVIDIA MCP67", 0},
{0x055610de, "NVIDIA MCP67", 0},
{0x055710de, "NVIDIA MCP67", 0},
{0x055810de, "NVIDIA MCP67", 0},
{0x055910de, "NVIDIA MCP67", 0},
{0x055A10de, "NVIDIA MCP67", 0},
{0x055B10de, "NVIDIA MCP67", 0},
{0x058410de, "NVIDIA MCP67", 0},
{0x07f010de, "NVIDIA MCP73", 0},
{0x07f110de, "NVIDIA MCP73", 0},
{0x07f210de, "NVIDIA MCP73", 0},
{0x07f310de, "NVIDIA MCP73", 0},
{0x07f410de, "NVIDIA MCP73", 0},
{0x07f510de, "NVIDIA MCP73", 0},
{0x07f610de, "NVIDIA MCP73", 0},
{0x07f710de, "NVIDIA MCP73", 0},
{0x07f810de, "NVIDIA MCP73", 0},
{0x07f910de, "NVIDIA MCP73", 0},
{0x07fa10de, "NVIDIA MCP73", 0},
{0x07fb10de, "NVIDIA MCP73", 0},
{0x0ad010de, "NVIDIA MCP77", 0},
{0x0ad110de, "NVIDIA MCP77", 0},
{0x0ad210de, "NVIDIA MCP77", 0},
{0x0ad310de, "NVIDIA MCP77", 0},
{0x0ad410de, "NVIDIA MCP77", 0},
{0x0ad510de, "NVIDIA MCP77", 0},
{0x0ad610de, "NVIDIA MCP77", 0},
{0x0ad710de, "NVIDIA MCP77", 0},
{0x0ad810de, "NVIDIA MCP77", 0},
{0x0ad910de, "NVIDIA MCP77", 0},
{0x0ada10de, "NVIDIA MCP77", 0},
{0x0adb10de, "NVIDIA MCP77", 0},
{0x0ab410de, "NVIDIA MCP79", 0},
{0x0ab510de, "NVIDIA MCP79", 0},
{0x0ab610de, "NVIDIA MCP79", 0},
{0x0ab710de, "NVIDIA MCP79", 0},
{0x0ab810de, "NVIDIA MCP79", 0},
{0x0ab910de, "NVIDIA MCP79", 0},
{0x0aba10de, "NVIDIA MCP79", 0},
{0x0abb10de, "NVIDIA MCP79", 0},
{0x0abc10de, "NVIDIA MCP79", 0},
{0x0abd10de, "NVIDIA MCP79", 0},
{0x0abe10de, "NVIDIA MCP79", 0},
{0x0abf10de, "NVIDIA MCP79", 0},
{0x0d8410de, "NVIDIA MCP89", 0},
{0x0d8510de, "NVIDIA MCP89", 0},
{0x0d8610de, "NVIDIA MCP89", 0},
{0x0d8710de, "NVIDIA MCP89", 0},
{0x0d8810de, "NVIDIA MCP89", 0},
{0x0d8910de, "NVIDIA MCP89", 0},
{0x0d8a10de, "NVIDIA MCP89", 0},
{0x0d8b10de, "NVIDIA MCP89", 0},
{0x0d8c10de, "NVIDIA MCP89", 0},
{0x0d8d10de, "NVIDIA MCP89", 0},
{0x0d8e10de, "NVIDIA MCP89", 0},
{0x0d8f10de, "NVIDIA MCP89", 0},
{0x33491106, "VIA VT8251", 0},
{0x62871106, "VIA VT8251", 0},
{0x11841039, "SiS 966", 0},
{0x11851039, "SiS 968", 0},
{0x01861039, "SiS 968", 0},
{0, NULL, 0}
};
static int
ahci_probe(device_t dev)
{
char buf[64];
int i, valid = 0;
uint32_t devid = pci_get_devid(dev);
/* Is this a possible AHCI candidate? */
if (pci_get_class(dev) == PCIC_STORAGE &&
pci_get_subclass(dev) == PCIS_STORAGE_SATA &&
pci_get_progif(dev) == PCIP_STORAGE_SATA_AHCI_1_0)
valid = 1;
/* Is this a known AHCI chip? */
for (i = 0; ahci_ids[i].id != 0; i++) {
if (ahci_ids[i].id == devid &&
(valid || !(ahci_ids[i].quirks & AHCI_Q_NOFORCE))) {
/* Do not attach JMicrons with single PCI function. */
if (pci_get_vendor(dev) == 0x197b &&
(pci_read_config(dev, 0xdf, 1) & 0x40) == 0)
return (ENXIO);
snprintf(buf, sizeof(buf), "%s AHCI SATA controller",
ahci_ids[i].name);
device_set_desc_copy(dev, buf);
return (BUS_PROBE_VENDOR);
}
}
if (!valid)
return (ENXIO);
device_set_desc_copy(dev, "AHCI SATA controller");
return (BUS_PROBE_VENDOR);
}
static int
ahci_ata_probe(device_t dev)
{
char buf[64];
int i;
uint32_t devid = pci_get_devid(dev);
if ((intptr_t)device_get_ivars(dev) >= 0)
return (ENXIO);
/* Is this a known AHCI chip? */
for (i = 0; ahci_ids[i].id != 0; i++) {
if (ahci_ids[i].id == devid) {
snprintf(buf, sizeof(buf), "%s AHCI SATA controller",
ahci_ids[i].name);
device_set_desc_copy(dev, buf);
return (BUS_PROBE_VENDOR);
}
}
device_set_desc_copy(dev, "AHCI SATA 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, i;
uint32_t devid = pci_get_devid(dev);
u_int32_t version;
ctlr->dev = dev;
i = 0;
while (ahci_ids[i].id != 0 && ahci_ids[i].id != devid)
i++;
ctlr->quirks = ahci_ids[i].quirks;
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 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);
ctlr->ichannels = ATA_INL(ctlr->r_mem, AHCI_PI);
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;
/* 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. */
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);
}
/* Some controllers have edge triggered IS. */
if (ctlr->quirks & AHCI_Q_EDGEIS)
ATA_OUTL(ctlr->r_mem, AHCI_IS, is);
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);
}
/*
* 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);
static device_method_t ahci_ata_methods[] = {
DEVMETHOD(device_probe, ahci_ata_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_ata_driver = {
"ahci",
ahci_ata_methods,
sizeof(struct ahci_controller)
};
DRIVER_MODULE(ahci, atapci, ahci_ata_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, i, sata_rev = 0;
ch->dev = dev;
ch->unit = (intptr_t)device_get_ivars(dev);
ch->caps = ctlr->caps;
ch->caps2 = ctlr->caps2;
ch->quirks = ctlr->quirks;
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)
sata_rev = 1;
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->curr[i] = ch->user[i];
}
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,
min(2, ch->numslots),
(ch->caps & AHCI_CAP_SNCQ) ? 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, ahcich_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;
if (ch->caps & AHCI_CAP_SSNTF)
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) {
if (ch->caps & AHCI_CAP_SSNTF)
sntf = ATA_INL(ch->r_mem, AHCI_P_SNTF);
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);
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);
/* Tagged command while we have no supported tag free. */
if (((~ch->oslots) & (0xffffffff >> (32 -
ch->curr[ccb->ccb_h.target_id].tags))) == 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(device_t dev, union ccb *ccb)
{
struct ahci_channel *ch = device_get_softc(dev);
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;
tag = ch->lastslot;
while (1) {
if (tag >= tags)
tag = 0;
if (ch->slot[tag].state == AHCI_SLOT_EMPTY)
break;
tag++;
};
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 << slot->slot);
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(dev, 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->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--;
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 && !ahci_check_collision(dev, ch->frozen)) {
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(device_t dev, struct ahci_cmd_tab *ctp, union ccb *ccb, int tag)
{
struct ahci_channel *ch = device_get_softc(dev);
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 &&
ch->curr[ccb->ccb_h.target_id].mode >= ATA_DMA)
fis[3] = ATA_F_DMA;
else {
fis[5] = ccb->csio.dxfer_len;
fis[6] = ccb->csio.dxfer_len >> 8;
}
fis[7] = ATA_D_LBA;
fis[15] = ATA_A_4BIT;
bzero(ctp->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);
int sata_rev;
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");
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(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;
struct ahci_device *d;
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;
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;
struct ahci_device *d;
uint32_t status;
if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
d = &ch->curr[ccb->ccb_h.target_id];
else
d = &ch->user[ccb->ccb_h.target_id];
cts->protocol = PROTO_ATA;
cts->protocol_version = PROTO_VERSION_UNSPECIFIED;
cts->transport = XPORT_SATA;
cts->transport_version = XPORT_VERSION_UNSPECIFIED;
cts->proto_specific.valid = 0;
cts->xport_specific.sata.valid = 0;
if (cts->type == CTS_TYPE_CURRENT_SETTINGS &&
(ccb->ccb_h.target_id == 15 ||
(ccb->ccb_h.target_id == 0 && !ch->pm_present))) {
status = ATA_INL(ch->r_mem, 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;
}
} else {
cts->xport_specific.sata.revision = d->revision;
cts->xport_specific.sata.valid |= CTS_SATA_VALID_REVISION;
}
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;
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;
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;
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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