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freebsd-skq/sys/dev/mpt/mpt_pci.c
marius 13b1156fcd - For SAS but neither FC nor SPI controllers default to using MSI (still 
allowing their use to be disabled via device hints though). This matches
  what the corresponding Linux driver provided by LSI does. Tested with
  SAS1064.
- There's no need to keep track of the RIDs used.
- Don't allocate MSI/MSI-X as RF_SHAREABLE.
- Remove a comment which no longer applies since r209599.
- Assign NULL rather than 0 to pointers.

MFC after:	1 month
2011-07-13 18:48:51 +00:00

894 lines
24 KiB
C
Raw Blame History

/*-
* PCI specific probe and attach routines for LSI Fusion Adapters
* FreeBSD Version.
*
* Copyright (c) 2000, 2001 by Greg Ansley
* Partially derived from Matt Jacob's ISP driver.
* Copyright (c) 1997, 1998, 1999, 2000, 2001, 2002 by Matthew Jacob
* Feral Software
* 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 immediately at the beginning of the file, without modification,
* this list of conditions, and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*-
* Copyright (c) 2002, 2006 by Matthew Jacob
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon including
* a substantially similar Disclaimer requirement for further binary
* redistribution.
* 3. Neither the names of the above listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF THE COPYRIGHT
* OWNER OR CONTRIBUTOR IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Support from Chris Ellsworth in order to make SAS adapters work
* is gratefully acknowledged.
*
* Support from LSI-Logic has also gone a great deal toward making this a
* workable subsystem and is gratefully acknowledged.
*/
/*
* Copyright (c) 2004, Avid Technology, Inc. and its contributors.
* Copyright (c) 2005, WHEEL Sp. z o.o.
* Copyright (c) 2004, 2005 Justin T. Gibbs
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon including
* a substantially similar Disclaimer requirement for further binary
* redistribution.
* 3. Neither the names of the above listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF THE COPYRIGHT
* OWNER OR CONTRIBUTOR IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <dev/mpt/mpt.h>
#include <dev/mpt/mpt_cam.h>
#include <dev/mpt/mpt_raid.h>
#if __FreeBSD_version < 700000
#define pci_msix_count(x) 0
#define pci_msi_count(x) 0
#define pci_alloc_msi(x, y) 1
#define pci_alloc_msix(x, y) 1
#define pci_release_msi(x) do { ; } while (0)
#endif
#ifndef PCI_VENDOR_LSI
#define PCI_VENDOR_LSI 0x1000
#endif
#ifndef PCI_PRODUCT_LSI_FC909
#define PCI_PRODUCT_LSI_FC909 0x0620
#endif
#ifndef PCI_PRODUCT_LSI_FC909A
#define PCI_PRODUCT_LSI_FC909A 0x0621
#endif
#ifndef PCI_PRODUCT_LSI_FC919
#define PCI_PRODUCT_LSI_FC919 0x0624
#endif
#ifndef PCI_PRODUCT_LSI_FC929
#define PCI_PRODUCT_LSI_FC929 0x0622
#endif
#ifndef PCI_PRODUCT_LSI_FC929X
#define PCI_PRODUCT_LSI_FC929X 0x0626
#endif
#ifndef PCI_PRODUCT_LSI_FC919X
#define PCI_PRODUCT_LSI_FC919X 0x0628
#endif
#ifndef PCI_PRODUCT_LSI_FC7X04X
#define PCI_PRODUCT_LSI_FC7X04X 0x0640
#endif
#ifndef PCI_PRODUCT_LSI_FC646
#define PCI_PRODUCT_LSI_FC646 0x0646
#endif
#ifndef PCI_PRODUCT_LSI_1030
#define PCI_PRODUCT_LSI_1030 0x0030
#endif
#ifndef PCI_PRODUCT_LSI_SAS1064
#define PCI_PRODUCT_LSI_SAS1064 0x0050
#endif
#ifndef PCI_PRODUCT_LSI_SAS1064A
#define PCI_PRODUCT_LSI_SAS1064A 0x005C
#endif
#ifndef PCI_PRODUCT_LSI_SAS1064E
#define PCI_PRODUCT_LSI_SAS1064E 0x0056
#endif
#ifndef PCI_PRODUCT_LSI_SAS1066
#define PCI_PRODUCT_LSI_SAS1066 0x005E
#endif
#ifndef PCI_PRODUCT_LSI_SAS1066E
#define PCI_PRODUCT_LSI_SAS1066E 0x005A
#endif
#ifndef PCI_PRODUCT_LSI_SAS1068
#define PCI_PRODUCT_LSI_SAS1068 0x0054
#endif
#ifndef PCI_PRODUCT_LSI_SAS1068E
#define PCI_PRODUCT_LSI_SAS1068E 0x0058
#endif
#ifndef PCI_PRODUCT_LSI_SAS1078
#define PCI_PRODUCT_LSI_SAS1078 0x0062
#endif
#ifndef PCI_PRODUCT_LSI_SAS1078DE
#define PCI_PRODUCT_LSI_SAS1078DE 0x007C
#endif
#ifndef PCIM_CMD_SERRESPEN
#define PCIM_CMD_SERRESPEN 0x0100
#endif
static int mpt_pci_probe(device_t);
static int mpt_pci_attach(device_t);
static void mpt_free_bus_resources(struct mpt_softc *mpt);
static int mpt_pci_detach(device_t);
static int mpt_pci_shutdown(device_t);
static int mpt_dma_mem_alloc(struct mpt_softc *mpt);
static void mpt_dma_mem_free(struct mpt_softc *mpt);
static void mpt_read_config_regs(struct mpt_softc *mpt);
static void mpt_pci_intr(void *);
static device_method_t mpt_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, mpt_pci_probe),
DEVMETHOD(device_attach, mpt_pci_attach),
DEVMETHOD(device_detach, mpt_pci_detach),
DEVMETHOD(device_shutdown, mpt_pci_shutdown),
{ 0, 0 }
};
static driver_t mpt_driver = {
"mpt", mpt_methods, sizeof(struct mpt_softc)
};
static devclass_t mpt_devclass;
DRIVER_MODULE(mpt, pci, mpt_driver, mpt_devclass, 0, 0);
MODULE_DEPEND(mpt, pci, 1, 1, 1);
MODULE_VERSION(mpt, 1);
static int
mpt_pci_probe(device_t dev)
{
char *desc;
if (pci_get_vendor(dev) != PCI_VENDOR_LSI) {
return (ENXIO);
}
switch ((pci_get_device(dev) & ~1)) {
case PCI_PRODUCT_LSI_FC909:
desc = "LSILogic FC909 FC Adapter";
break;
case PCI_PRODUCT_LSI_FC909A:
desc = "LSILogic FC909A FC Adapter";
break;
case PCI_PRODUCT_LSI_FC919:
desc = "LSILogic FC919 FC Adapter";
break;
case PCI_PRODUCT_LSI_FC929:
desc = "Dual LSILogic FC929 FC Adapter";
break;
case PCI_PRODUCT_LSI_FC919X:
desc = "LSILogic FC919 FC PCI-X Adapter";
break;
case PCI_PRODUCT_LSI_FC929X:
desc = "Dual LSILogic FC929X 2Gb/s FC PCI-X Adapter";
break;
case PCI_PRODUCT_LSI_FC646:
desc = "Dual LSILogic FC7X04X 4Gb/s FC PCI-Express Adapter";
break;
case PCI_PRODUCT_LSI_FC7X04X:
desc = "Dual LSILogic FC7X04X 4Gb/s FC PCI-X Adapter";
break;
case PCI_PRODUCT_LSI_1030:
desc = "LSILogic 1030 Ultra4 Adapter";
break;
case PCI_PRODUCT_LSI_SAS1064:
case PCI_PRODUCT_LSI_SAS1064A:
case PCI_PRODUCT_LSI_SAS1064E:
case PCI_PRODUCT_LSI_SAS1066:
case PCI_PRODUCT_LSI_SAS1066E:
case PCI_PRODUCT_LSI_SAS1068:
case PCI_PRODUCT_LSI_SAS1068E:
case PCI_PRODUCT_LSI_SAS1078:
case PCI_PRODUCT_LSI_SAS1078DE:
desc = "LSILogic SAS/SATA Adapter";
break;
default:
return (ENXIO);
}
device_set_desc(dev, desc);
return (0);
}
#if __FreeBSD_version < 500000
static void
mpt_set_options(struct mpt_softc *mpt)
{
int bitmap;
bitmap = 0;
if (getenv_int("mpt_disable", &bitmap)) {
if (bitmap & (1 << mpt->unit)) {
mpt->disabled = 1;
}
}
bitmap = 0;
if (getenv_int("mpt_debug", &bitmap)) {
if (bitmap & (1 << mpt->unit)) {
mpt->verbose = MPT_PRT_DEBUG;
}
}
bitmap = 0;
if (getenv_int("mpt_debug1", &bitmap)) {
if (bitmap & (1 << mpt->unit)) {
mpt->verbose = MPT_PRT_DEBUG1;
}
}
bitmap = 0;
if (getenv_int("mpt_debug2", &bitmap)) {
if (bitmap & (1 << mpt->unit)) {
mpt->verbose = MPT_PRT_DEBUG2;
}
}
bitmap = 0;
if (getenv_int("mpt_debug3", &bitmap)) {
if (bitmap & (1 << mpt->unit)) {
mpt->verbose = MPT_PRT_DEBUG3;
}
}
mpt->cfg_role = MPT_ROLE_DEFAULT;
bitmap = 0;
if (getenv_int("mpt_nil_role", &bitmap)) {
if (bitmap & (1 << mpt->unit)) {
mpt->cfg_role = 0;
}
mpt->do_cfg_role = 1;
}
bitmap = 0;
if (getenv_int("mpt_tgt_role", &bitmap)) {
if (bitmap & (1 << mpt->unit)) {
mpt->cfg_role |= MPT_ROLE_TARGET;
}
mpt->do_cfg_role = 1;
}
bitmap = 0;
if (getenv_int("mpt_ini_role", &bitmap)) {
if (bitmap & (1 << mpt->unit)) {
mpt->cfg_role |= MPT_ROLE_INITIATOR;
}
mpt->do_cfg_role = 1;
}
mpt->msi_enable = 0;
}
#else
static void
mpt_set_options(struct mpt_softc *mpt)
{
int tval;
tval = 0;
if (resource_int_value(device_get_name(mpt->dev),
device_get_unit(mpt->dev), "disable", &tval) == 0 && tval != 0) {
mpt->disabled = 1;
}
tval = 0;
if (resource_int_value(device_get_name(mpt->dev),
device_get_unit(mpt->dev), "debug", &tval) == 0 && tval != 0) {
mpt->verbose = tval;
}
tval = -1;
if (resource_int_value(device_get_name(mpt->dev),
device_get_unit(mpt->dev), "role", &tval) == 0 && tval >= 0 &&
tval <= 3) {
mpt->cfg_role = tval;
mpt->do_cfg_role = 1;
}
tval = 0;
mpt->msi_enable = 0;
if (mpt->is_sas)
mpt->msi_enable = 1;
if (resource_int_value(device_get_name(mpt->dev),
device_get_unit(mpt->dev), "msi_enable", &tval) == 0) {
mpt->msi_enable = tval;
}
}
#endif
static void
mpt_link_peer(struct mpt_softc *mpt)
{
struct mpt_softc *mpt2;
if (mpt->unit == 0) {
return;
}
/*
* XXX: depends on probe order
*/
mpt2 = (struct mpt_softc *)devclass_get_softc(mpt_devclass,mpt->unit-1);
if (mpt2 == NULL) {
return;
}
if (pci_get_vendor(mpt2->dev) != pci_get_vendor(mpt->dev)) {
return;
}
if (pci_get_device(mpt2->dev) != pci_get_device(mpt->dev)) {
return;
}
mpt->mpt2 = mpt2;
mpt2->mpt2 = mpt;
if (mpt->verbose >= MPT_PRT_DEBUG) {
mpt_prt(mpt, "linking with peer (mpt%d)\n",
device_get_unit(mpt2->dev));
}
}
static void
mpt_unlink_peer(struct mpt_softc *mpt)
{
if (mpt->mpt2) {
mpt->mpt2->mpt2 = NULL;
}
}
static int
mpt_pci_attach(device_t dev)
{
struct mpt_softc *mpt;
int iqd;
uint32_t data, cmd;
int mpt_io_bar, mpt_mem_bar;
/* Allocate the softc structure */
mpt = (struct mpt_softc*)device_get_softc(dev);
if (mpt == NULL) {
device_printf(dev, "cannot allocate softc\n");
return (ENOMEM);
}
memset(mpt, 0, sizeof(struct mpt_softc));
switch ((pci_get_device(dev) & ~1)) {
case PCI_PRODUCT_LSI_FC909:
case PCI_PRODUCT_LSI_FC909A:
case PCI_PRODUCT_LSI_FC919:
case PCI_PRODUCT_LSI_FC929:
case PCI_PRODUCT_LSI_FC919X:
case PCI_PRODUCT_LSI_FC646:
case PCI_PRODUCT_LSI_FC7X04X:
mpt->is_fc = 1;
break;
case PCI_PRODUCT_LSI_SAS1064:
case PCI_PRODUCT_LSI_SAS1064A:
case PCI_PRODUCT_LSI_SAS1064E:
case PCI_PRODUCT_LSI_SAS1066:
case PCI_PRODUCT_LSI_SAS1066E:
case PCI_PRODUCT_LSI_SAS1068:
case PCI_PRODUCT_LSI_SAS1068E:
case PCI_PRODUCT_LSI_SAS1078:
case PCI_PRODUCT_LSI_SAS1078DE:
mpt->is_sas = 1;
break;
default:
mpt->is_spi = 1;
break;
}
mpt->dev = dev;
mpt->unit = device_get_unit(dev);
mpt->raid_resync_rate = MPT_RAID_RESYNC_RATE_DEFAULT;
mpt->raid_mwce_setting = MPT_RAID_MWCE_DEFAULT;
mpt->raid_queue_depth = MPT_RAID_QUEUE_DEPTH_DEFAULT;
mpt->verbose = MPT_PRT_NONE;
mpt->role = MPT_ROLE_NONE;
mpt->mpt_ini_id = MPT_INI_ID_NONE;
#ifdef __sparc64__
if (mpt->is_spi)
mpt->mpt_ini_id = OF_getscsinitid(dev);
#endif
mpt_set_options(mpt);
if (mpt->verbose == MPT_PRT_NONE) {
mpt->verbose = MPT_PRT_WARN;
/* Print INFO level (if any) if bootverbose is set */
mpt->verbose += (bootverbose != 0)? 1 : 0;
}
/* Make sure memory access decoders are enabled */
cmd = pci_read_config(dev, PCIR_COMMAND, 2);
if ((cmd & PCIM_CMD_MEMEN) == 0) {
device_printf(dev, "Memory accesses disabled");
return (ENXIO);
}
/*
* Make sure that SERR, PERR, WRITE INVALIDATE and BUSMASTER are set.
*/
cmd |=
PCIM_CMD_SERRESPEN | PCIM_CMD_PERRESPEN |
PCIM_CMD_BUSMASTEREN | PCIM_CMD_MWRICEN;
pci_write_config(dev, PCIR_COMMAND, cmd, 2);
/*
* Make sure we've disabled the ROM.
*/
data = pci_read_config(dev, PCIR_BIOS, 4);
data &= ~PCIM_BIOS_ENABLE;
pci_write_config(dev, PCIR_BIOS, data, 4);
/*
* Is this part a dual?
* If so, link with our partner (around yet)
*/
if ((pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_FC929 ||
(pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_FC646 ||
(pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_FC7X04X ||
(pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_1030) {
mpt_link_peer(mpt);
}
/*
* Figure out which are the I/O and MEM Bars
*/
data = pci_read_config(dev, PCIR_BAR(0), 4);
if (PCI_BAR_IO(data)) {
/* BAR0 is IO, BAR1 is memory */
mpt_io_bar = 0;
mpt_mem_bar = 1;
} else {
/* BAR0 is memory, BAR1 is IO */
mpt_mem_bar = 0;
mpt_io_bar = 1;
}
/*
* Set up register access. PIO mode is required for
* certain reset operations (but must be disabled for
* some cards otherwise).
*/
mpt_io_bar = PCIR_BAR(mpt_io_bar);
mpt->pci_pio_reg = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
&mpt_io_bar, RF_ACTIVE);
if (mpt->pci_pio_reg == NULL) {
device_printf(dev, "unable to map registers in PIO mode\n");
goto bad;
}
mpt->pci_pio_st = rman_get_bustag(mpt->pci_pio_reg);
mpt->pci_pio_sh = rman_get_bushandle(mpt->pci_pio_reg);
/* Allocate kernel virtual memory for the 9x9's Mem0 region */
mpt_mem_bar = PCIR_BAR(mpt_mem_bar);
mpt->pci_reg = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&mpt_mem_bar, RF_ACTIVE);
if (mpt->pci_reg == NULL) {
device_printf(dev, "Unable to memory map registers.\n");
if (mpt->is_sas) {
device_printf(dev, "Giving Up.\n");
goto bad;
}
device_printf(dev, "Falling back to PIO mode.\n");
mpt->pci_st = mpt->pci_pio_st;
mpt->pci_sh = mpt->pci_pio_sh;
} else {
mpt->pci_st = rman_get_bustag(mpt->pci_reg);
mpt->pci_sh = rman_get_bushandle(mpt->pci_reg);
}
/* Get a handle to the interrupt */
iqd = 0;
if (mpt->msi_enable) {
/*
* First try to alloc an MSI-X message. If that
* fails, then try to alloc an MSI message instead.
*/
if (pci_msix_count(dev) == 1) {
mpt->pci_msi_count = 1;
if (pci_alloc_msix(dev, &mpt->pci_msi_count) == 0) {
iqd = 1;
} else {
mpt->pci_msi_count = 0;
}
}
if (iqd == 0 && pci_msi_count(dev) == 1) {
mpt->pci_msi_count = 1;
if (pci_alloc_msi(dev, &mpt->pci_msi_count) == 0) {
iqd = 1;
} else {
mpt->pci_msi_count = 0;
}
}
}
mpt->pci_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &iqd,
RF_ACTIVE | (mpt->pci_msi_count ? 0 : RF_SHAREABLE));
if (mpt->pci_irq == NULL) {
device_printf(dev, "could not allocate interrupt\n");
goto bad;
}
MPT_LOCK_SETUP(mpt);
/* Disable interrupts at the part */
mpt_disable_ints(mpt);
/* Register the interrupt handler */
if (mpt_setup_intr(dev, mpt->pci_irq, MPT_IFLAGS, NULL, mpt_pci_intr,
mpt, &mpt->ih)) {
device_printf(dev, "could not setup interrupt\n");
goto bad;
}
/* Allocate dma memory */
if (mpt_dma_mem_alloc(mpt)) {
mpt_prt(mpt, "Could not allocate DMA memory\n");
goto bad;
}
/*
* Save the PCI config register values
*
* Hard resets are known to screw up the BAR for diagnostic
* memory accesses (Mem1).
*
* Using Mem1 is known to make the chip stop responding to
* configuration space transfers, so we need to save it now
*/
mpt_read_config_regs(mpt);
/*
* Disable PIO until we need it
*/
if (mpt->is_sas) {
pci_disable_io(dev, SYS_RES_IOPORT);
}
/* Initialize the hardware */
if (mpt->disabled == 0) {
if (mpt_attach(mpt) != 0) {
goto bad;
}
} else {
mpt_prt(mpt, "device disabled at user request\n");
goto bad;
}
mpt->eh = EVENTHANDLER_REGISTER(shutdown_post_sync, mpt_pci_shutdown,
dev, SHUTDOWN_PRI_DEFAULT);
if (mpt->eh == NULL) {
mpt_prt(mpt, "shutdown event registration failed\n");
(void) mpt_detach(mpt);
goto bad;
}
return (0);
bad:
mpt_dma_mem_free(mpt);
mpt_free_bus_resources(mpt);
mpt_unlink_peer(mpt);
MPT_LOCK_DESTROY(mpt);
/*
* but return zero to preserve unit numbering
*/
return (0);
}
/*
* Free bus resources
*/
static void
mpt_free_bus_resources(struct mpt_softc *mpt)
{
if (mpt->ih) {
bus_teardown_intr(mpt->dev, mpt->pci_irq, mpt->ih);
mpt->ih = NULL;
}
if (mpt->pci_irq) {
bus_release_resource(mpt->dev, SYS_RES_IRQ,
rman_get_rid(mpt->pci_irq), mpt->pci_irq);
mpt->pci_irq = NULL;
}
if (mpt->pci_msi_count) {
pci_release_msi(mpt->dev);
mpt->pci_msi_count = 0;
}
if (mpt->pci_pio_reg) {
bus_release_resource(mpt->dev, SYS_RES_IOPORT,
rman_get_rid(mpt->pci_pio_reg), mpt->pci_pio_reg);
mpt->pci_pio_reg = NULL;
}
if (mpt->pci_reg) {
bus_release_resource(mpt->dev, SYS_RES_MEMORY,
rman_get_rid(mpt->pci_reg), mpt->pci_reg);
mpt->pci_reg = NULL;
}
MPT_LOCK_DESTROY(mpt);
}
/*
* Disconnect ourselves from the system.
*/
static int
mpt_pci_detach(device_t dev)
{
struct mpt_softc *mpt;
mpt = (struct mpt_softc*)device_get_softc(dev);
if (mpt) {
mpt_disable_ints(mpt);
mpt_detach(mpt);
mpt_reset(mpt, /*reinit*/FALSE);
mpt_dma_mem_free(mpt);
mpt_free_bus_resources(mpt);
mpt_raid_free_mem(mpt);
if (mpt->eh != NULL) {
EVENTHANDLER_DEREGISTER(shutdown_post_sync, mpt->eh);
}
}
return(0);
}
/*
* Disable the hardware
*/
static int
mpt_pci_shutdown(device_t dev)
{
struct mpt_softc *mpt;
mpt = (struct mpt_softc *)device_get_softc(dev);
if (mpt) {
int r;
r = mpt_shutdown(mpt);
return (r);
}
return(0);
}
static int
mpt_dma_mem_alloc(struct mpt_softc *mpt)
{
size_t len;
struct mpt_map_info mi;
/* Check if we alreay have allocated the reply memory */
if (mpt->reply_phys != 0) {
return 0;
}
len = sizeof (request_t) * MPT_MAX_REQUESTS(mpt);
#ifdef RELENG_4
mpt->request_pool = (request_t *)malloc(len, M_DEVBUF, M_WAITOK);
if (mpt->request_pool == NULL) {
mpt_prt(mpt, "cannot allocate request pool\n");
return (1);
}
memset(mpt->request_pool, 0, len);
#else
mpt->request_pool = (request_t *)malloc(len, M_DEVBUF, M_WAITOK|M_ZERO);
if (mpt->request_pool == NULL) {
mpt_prt(mpt, "cannot allocate request pool\n");
return (1);
}
#endif
/*
* Create a parent dma tag for this device.
*
* Align at byte boundaries,
* Limit to 32-bit addressing for request/reply queues.
*/
if (mpt_dma_tag_create(mpt, /*parent*/bus_get_dma_tag(mpt->dev),
/*alignment*/1, /*boundary*/0, /*lowaddr*/BUS_SPACE_MAXADDR,
/*highaddr*/BUS_SPACE_MAXADDR, /*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
/*nsegments*/BUS_SPACE_UNRESTRICTED,
/*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, /*flags*/0,
&mpt->parent_dmat) != 0) {
mpt_prt(mpt, "cannot create parent dma tag\n");
return (1);
}
/* Create a child tag for reply buffers */
if (mpt_dma_tag_create(mpt, mpt->parent_dmat, PAGE_SIZE, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
NULL, NULL, 2 * PAGE_SIZE, 1, BUS_SPACE_MAXSIZE_32BIT, 0,
&mpt->reply_dmat) != 0) {
mpt_prt(mpt, "cannot create a dma tag for replies\n");
return (1);
}
/* Allocate some DMA accessible memory for replies */
if (bus_dmamem_alloc(mpt->reply_dmat, (void **)&mpt->reply,
BUS_DMA_NOWAIT, &mpt->reply_dmap) != 0) {
mpt_prt(mpt, "cannot allocate %lu bytes of reply memory\n",
(u_long) (2 * PAGE_SIZE));
return (1);
}
mi.mpt = mpt;
mi.error = 0;
/* Load and lock it into "bus space" */
bus_dmamap_load(mpt->reply_dmat, mpt->reply_dmap, mpt->reply,
2 * PAGE_SIZE, mpt_map_rquest, &mi, 0);
if (mi.error) {
mpt_prt(mpt, "error %d loading dma map for DMA reply queue\n",
mi.error);
return (1);
}
mpt->reply_phys = mi.phys;
return (0);
}
/* Deallocate memory that was allocated by mpt_dma_mem_alloc
*/
static void
mpt_dma_mem_free(struct mpt_softc *mpt)
{
/* Make sure we aren't double destroying */
if (mpt->reply_dmat == 0) {
mpt_lprt(mpt, MPT_PRT_DEBUG, "already released dma memory\n");
return;
}
bus_dmamap_unload(mpt->reply_dmat, mpt->reply_dmap);
bus_dmamem_free(mpt->reply_dmat, mpt->reply, mpt->reply_dmap);
bus_dma_tag_destroy(mpt->reply_dmat);
bus_dma_tag_destroy(mpt->parent_dmat);
mpt->reply_dmat = NULL;
free(mpt->request_pool, M_DEVBUF);
mpt->request_pool = NULL;
}
/* Reads modifiable (via PCI transactions) config registers */
static void
mpt_read_config_regs(struct mpt_softc *mpt)
{
mpt->pci_cfg.Command = pci_read_config(mpt->dev, PCIR_COMMAND, 2);
mpt->pci_cfg.LatencyTimer_LineSize =
pci_read_config(mpt->dev, PCIR_CACHELNSZ, 2);
mpt->pci_cfg.IO_BAR = pci_read_config(mpt->dev, PCIR_BAR(0), 4);
mpt->pci_cfg.Mem0_BAR[0] = pci_read_config(mpt->dev, PCIR_BAR(1), 4);
mpt->pci_cfg.Mem0_BAR[1] = pci_read_config(mpt->dev, PCIR_BAR(2), 4);
mpt->pci_cfg.Mem1_BAR[0] = pci_read_config(mpt->dev, PCIR_BAR(3), 4);
mpt->pci_cfg.Mem1_BAR[1] = pci_read_config(mpt->dev, PCIR_BAR(4), 4);
mpt->pci_cfg.ROM_BAR = pci_read_config(mpt->dev, PCIR_BIOS, 4);
mpt->pci_cfg.IntLine = pci_read_config(mpt->dev, PCIR_INTLINE, 1);
mpt->pci_cfg.PMCSR = pci_read_config(mpt->dev, 0x44, 4);
}
/* Sets modifiable config registers */
void
mpt_set_config_regs(struct mpt_softc *mpt)
{
uint32_t val;
#define MPT_CHECK(reg, offset, size) \
val = pci_read_config(mpt->dev, offset, size); \
if (mpt->pci_cfg.reg != val) { \
mpt_prt(mpt, \
"Restoring " #reg " to 0x%X from 0x%X\n", \
mpt->pci_cfg.reg, val); \
}
if (mpt->verbose >= MPT_PRT_DEBUG) {
MPT_CHECK(Command, PCIR_COMMAND, 2);
MPT_CHECK(LatencyTimer_LineSize, PCIR_CACHELNSZ, 2);
MPT_CHECK(IO_BAR, PCIR_BAR(0), 4);
MPT_CHECK(Mem0_BAR[0], PCIR_BAR(1), 4);
MPT_CHECK(Mem0_BAR[1], PCIR_BAR(2), 4);
MPT_CHECK(Mem1_BAR[0], PCIR_BAR(3), 4);
MPT_CHECK(Mem1_BAR[1], PCIR_BAR(4), 4);
MPT_CHECK(ROM_BAR, PCIR_BIOS, 4);
MPT_CHECK(IntLine, PCIR_INTLINE, 1);
MPT_CHECK(PMCSR, 0x44, 4);
}
#undef MPT_CHECK
pci_write_config(mpt->dev, PCIR_COMMAND, mpt->pci_cfg.Command, 2);
pci_write_config(mpt->dev, PCIR_CACHELNSZ,
mpt->pci_cfg.LatencyTimer_LineSize, 2);
pci_write_config(mpt->dev, PCIR_BAR(0), mpt->pci_cfg.IO_BAR, 4);
pci_write_config(mpt->dev, PCIR_BAR(1), mpt->pci_cfg.Mem0_BAR[0], 4);
pci_write_config(mpt->dev, PCIR_BAR(2), mpt->pci_cfg.Mem0_BAR[1], 4);
pci_write_config(mpt->dev, PCIR_BAR(3), mpt->pci_cfg.Mem1_BAR[0], 4);
pci_write_config(mpt->dev, PCIR_BAR(4), mpt->pci_cfg.Mem1_BAR[1], 4);
pci_write_config(mpt->dev, PCIR_BIOS, mpt->pci_cfg.ROM_BAR, 4);
pci_write_config(mpt->dev, PCIR_INTLINE, mpt->pci_cfg.IntLine, 1);
pci_write_config(mpt->dev, 0x44, mpt->pci_cfg.PMCSR, 4);
}
static void
mpt_pci_intr(void *arg)
{
struct mpt_softc *mpt;
mpt = (struct mpt_softc *)arg;
MPT_LOCK(mpt);
mpt_intr(mpt);
MPT_UNLOCK(mpt);
}
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