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NetBSD/sys/dev/pci/pci_subr.c

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/* $NetBSD: pci_subr.c,v 1.30 1998/08/15 03:02:46 mycroft Exp $ */
/*
* Copyright (c) 1997 Zubin D. Dittia. All rights reserved.
* Copyright (c) 1995, 1996, 1998
* Christopher G. Demetriou. All rights reserved.
* Copyright (c) 1994 Charles M. Hannum. 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 the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles M. Hannum.
* 4. 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 ``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.
*/
/*
* PCI autoconfiguration support functions.
*/
#include "opt_pciverbose.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/intr.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#ifdef PCIVERBOSE
#include <dev/pci/pcidevs.h>
#endif
static void pci_conf_print_common __P((pci_chipset_tag_t, pcitag_t,
const pcireg_t *regs));
static void pci_conf_print_bar __P((pci_chipset_tag_t, pcitag_t,
const pcireg_t *regs, int, const char *));
static void pci_conf_print_regs __P((const pcireg_t *regs, int first,
int pastlast));
static void pci_conf_print_type0 __P((pci_chipset_tag_t, pcitag_t,
const pcireg_t *regs));
static void pci_conf_print_type1 __P((pci_chipset_tag_t, pcitag_t,
const pcireg_t *regs));
static void pci_conf_print_type2 __P((pci_chipset_tag_t, pcitag_t,
const pcireg_t *regs));
/*
* Descriptions of known PCI classes and subclasses.
*
* Subclasses are described in the same way as classes, but have a
* NULL subclass pointer.
*/
struct pci_class {
char *name;
int val; /* as wide as pci_{,sub}class_t */
struct pci_class *subclasses;
};
struct pci_class pci_subclass_prehistoric[] = {
{ "miscellaneous", PCI_SUBCLASS_PREHISTORIC_MISC, },
{ "VGA", PCI_SUBCLASS_PREHISTORIC_VGA, },
{ 0 }
};
struct pci_class pci_subclass_mass_storage[] = {
{ "SCSI", PCI_SUBCLASS_MASS_STORAGE_SCSI, },
{ "IDE", PCI_SUBCLASS_MASS_STORAGE_IDE, },
{ "floppy", PCI_SUBCLASS_MASS_STORAGE_FLOPPY, },
{ "IPI", PCI_SUBCLASS_MASS_STORAGE_IPI, },
{ "RAID", PCI_SUBCLASS_MASS_STORAGE_RAID, },
{ "miscellaneous", PCI_SUBCLASS_MASS_STORAGE_MISC, },
{ 0 },
};
struct pci_class pci_subclass_network[] = {
{ "ethernet", PCI_SUBCLASS_NETWORK_ETHERNET, },
{ "token ring", PCI_SUBCLASS_NETWORK_TOKENRING, },
{ "FDDI", PCI_SUBCLASS_NETWORK_FDDI, },
{ "ATM", PCI_SUBCLASS_NETWORK_ATM, },
{ "miscellaneous", PCI_SUBCLASS_NETWORK_MISC, },
{ 0 },
};
struct pci_class pci_subclass_display[] = {
{ "VGA", PCI_SUBCLASS_DISPLAY_VGA, },
{ "XGA", PCI_SUBCLASS_DISPLAY_XGA, },
{ "miscellaneous", PCI_SUBCLASS_DISPLAY_MISC, },
{ 0 },
};
struct pci_class pci_subclass_multimedia[] = {
{ "video", PCI_SUBCLASS_MULTIMEDIA_VIDEO, },
{ "audio", PCI_SUBCLASS_MULTIMEDIA_AUDIO, },
{ "miscellaneous", PCI_SUBCLASS_MULTIMEDIA_MISC, },
{ 0 },
};
struct pci_class pci_subclass_memory[] = {
{ "RAM", PCI_SUBCLASS_MEMORY_RAM, },
{ "flash", PCI_SUBCLASS_MEMORY_FLASH, },
{ "miscellaneous", PCI_SUBCLASS_MEMORY_MISC, },
{ 0 },
};
struct pci_class pci_subclass_bridge[] = {
{ "host", PCI_SUBCLASS_BRIDGE_HOST, },
{ "ISA", PCI_SUBCLASS_BRIDGE_ISA, },
{ "EISA", PCI_SUBCLASS_BRIDGE_EISA, },
{ "MicroChannel", PCI_SUBCLASS_BRIDGE_MC, },
{ "PCI", PCI_SUBCLASS_BRIDGE_PCI, },
{ "PCMCIA", PCI_SUBCLASS_BRIDGE_PCMCIA, },
{ "NuBus", PCI_SUBCLASS_BRIDGE_NUBUS, },
{ "CardBus", PCI_SUBCLASS_BRIDGE_CARDBUS, },
{ "miscellaneous", PCI_SUBCLASS_BRIDGE_MISC, },
{ 0 },
};
struct pci_class pci_subclass_communications[] = {
{ "serial", PCI_SUBCLASS_COMMUNICATIONS_SERIAL, },
{ "parallel", PCI_SUBCLASS_COMMUNICATIONS_PARALLEL, },
{ "miscellaneous", PCI_SUBCLASS_COMMUNICATIONS_MISC, },
{ 0 },
};
struct pci_class pci_subclass_system[] = {
{ "8259 PIC", PCI_SUBCLASS_SYSTEM_PIC, },
{ "8237 DMA", PCI_SUBCLASS_SYSTEM_DMA, },
{ "8254 timer", PCI_SUBCLASS_SYSTEM_TIMER, },
{ "RTC", PCI_SUBCLASS_SYSTEM_RTC, },
{ "miscellaneous", PCI_SUBCLASS_SYSTEM_MISC, },
{ 0 },
};
struct pci_class pci_subclass_input[] = {
{ "keyboard", PCI_SUBCLASS_INPUT_KEYBOARD, },
{ "digitizer", PCI_SUBCLASS_INPUT_DIGITIZER, },
{ "mouse", PCI_SUBCLASS_INPUT_MOUSE, },
{ "miscellaneous", PCI_SUBCLASS_INPUT_MISC, },
{ 0 },
};
struct pci_class pci_subclass_dock[] = {
{ "generic", PCI_SUBCLASS_DOCK_GENERIC, },
{ "miscellaneous", PCI_SUBCLASS_DOCK_MISC, },
{ 0 },
};
struct pci_class pci_subclass_processor[] = {
{ "386", PCI_SUBCLASS_PROCESSOR_386, },
{ "486", PCI_SUBCLASS_PROCESSOR_486, },
{ "Pentium", PCI_SUBCLASS_PROCESSOR_PENTIUM, },
{ "Alpha", PCI_SUBCLASS_PROCESSOR_ALPHA, },
{ "PowerPC", PCI_SUBCLASS_PROCESSOR_POWERPC, },
{ "Co-processor", PCI_SUBCLASS_PROCESSOR_COPROC, },
{ 0 },
};
struct pci_class pci_subclass_serialbus[] = {
{ "Firewire", PCI_SUBCLASS_SERIALBUS_FIREWIRE, },
{ "ACCESS.bus", PCI_SUBCLASS_SERIALBUS_ACCESS, },
{ "SSA", PCI_SUBCLASS_SERIALBUS_SSA, },
{ "USB", PCI_SUBCLASS_SERIALBUS_USB, },
{ "Fiber Channel", PCI_SUBCLASS_SERIALBUS_FIBER, },
{ 0 },
};
struct pci_class pci_class[] = {
{ "prehistoric", PCI_CLASS_PREHISTORIC,
pci_subclass_prehistoric, },
{ "mass storage", PCI_CLASS_MASS_STORAGE,
pci_subclass_mass_storage, },
{ "network", PCI_CLASS_NETWORK,
pci_subclass_network, },
{ "display", PCI_CLASS_DISPLAY,
pci_subclass_display, },
{ "multimedia", PCI_CLASS_MULTIMEDIA,
pci_subclass_multimedia, },
{ "memory", PCI_CLASS_MEMORY,
pci_subclass_memory, },
{ "bridge", PCI_CLASS_BRIDGE,
pci_subclass_bridge, },
{ "communications", PCI_CLASS_COMMUNICATIONS,
pci_subclass_communications, },
{ "system", PCI_CLASS_SYSTEM,
pci_subclass_system, },
{ "input", PCI_CLASS_INPUT,
pci_subclass_input, },
{ "dock", PCI_CLASS_DOCK,
pci_subclass_dock, },
{ "processor", PCI_CLASS_PROCESSOR,
pci_subclass_processor, },
{ "serial bus", PCI_CLASS_SERIALBUS,
pci_subclass_serialbus, },
{ "undefined", PCI_CLASS_UNDEFINED,
0, },
{ 0 },
};
#ifdef PCIVERBOSE
/*
* Descriptions of of known vendors and devices ("products").
*/
struct pci_knowndev {
pci_vendor_id_t vendor;
pci_product_id_t product;
int flags;
char *vendorname, *productname;
};
#define PCI_KNOWNDEV_NOPROD 0x01 /* match on vendor only */
#include <dev/pci/pcidevs_data.h>
#endif /* PCIVERBOSE */
char *
pci_findvendor(id_reg)
pcireg_t id_reg;
{
#ifdef PCIVERBOSE
pci_vendor_id_t vendor = PCI_VENDOR(id_reg);
struct pci_knowndev *kdp;
kdp = pci_knowndevs;
while (kdp->vendorname != NULL) { /* all have vendor name */
if (kdp->vendor == vendor)
break;
kdp++;
}
return (kdp->vendorname);
#else
return (NULL);
#endif
}
void
pci_devinfo(id_reg, class_reg, showclass, cp)
pcireg_t id_reg, class_reg;
int showclass;
char *cp;
{
pci_vendor_id_t vendor;
pci_product_id_t product;
pci_class_t class;
pci_subclass_t subclass;
pci_interface_t interface;
pci_revision_t revision;
char *vendor_namep, *product_namep;
struct pci_class *classp, *subclassp;
#ifdef PCIVERBOSE
struct pci_knowndev *kdp;
const char *unmatched = "unknown ";
#else
const char *unmatched = "";
#endif
vendor = PCI_VENDOR(id_reg);
product = PCI_PRODUCT(id_reg);
class = PCI_CLASS(class_reg);
subclass = PCI_SUBCLASS(class_reg);
interface = PCI_INTERFACE(class_reg);
revision = PCI_REVISION(class_reg);
#ifdef PCIVERBOSE
kdp = pci_knowndevs;
while (kdp->vendorname != NULL) { /* all have vendor name */
if (kdp->vendor == vendor && (kdp->product == product ||
(kdp->flags & PCI_KNOWNDEV_NOPROD) != 0))
break;
kdp++;
}
if (kdp->vendorname == NULL)
vendor_namep = product_namep = NULL;
else {
vendor_namep = kdp->vendorname;
product_namep = (kdp->flags & PCI_KNOWNDEV_NOPROD) == 0 ?
kdp->productname : NULL;
}
#else /* PCIVERBOSE */
vendor_namep = product_namep = NULL;
#endif /* PCIVERBOSE */
classp = pci_class;
while (classp->name != NULL) {
if (class == classp->val)
break;
classp++;
}
subclassp = (classp->name != NULL) ? classp->subclasses : NULL;
while (subclassp && subclassp->name != NULL) {
if (subclass == subclassp->val)
break;
subclassp++;
}
if (vendor_namep == NULL)
cp += sprintf(cp, "%svendor 0x%04x product 0x%04x",
unmatched, vendor, product);
else if (product_namep != NULL)
cp += sprintf(cp, "%s %s", vendor_namep, product_namep);
else
cp += sprintf(cp, "%s product 0x%04x",
vendor_namep, product);
if (showclass) {
cp += sprintf(cp, " (");
if (classp->name == NULL)
cp += sprintf(cp, "class 0x%02x, subclass 0x%02x",
class, subclass);
else {
if (subclassp == NULL || subclassp->name == NULL)
cp += sprintf(cp,
"%s subclass 0x%02x",
classp->name, subclass);
else
cp += sprintf(cp, "%s %s",
subclassp->name, classp->name);
}
if (interface != 0)
cp += sprintf(cp, ", interface 0x%02x", interface);
if (revision != 0)
cp += sprintf(cp, ", revision 0x%02x", revision);
cp += sprintf(cp, ")");
}
}
/*
* Print out most of the PCI configuration registers. Typically used
* in a device attach routine like this:
*
* #ifdef MYDEV_DEBUG
* printf("%s: ", sc->sc_dev.dv_xname);
* pci_conf_print(pa->pa_pc, pa->pa_tag);
* #endif
*/
#define i2o(i) ((i) * 4)
#define o2i(o) ((o) / 4)
#define onoff(str, bit) \
printf(" %s: %s\n", (str), (rval & (bit)) ? "on" : "off");
static void
pci_conf_print_common(pc, tag, regs)
pci_chipset_tag_t pc;
pcitag_t tag;
const pcireg_t *regs;
{
#ifdef PCIVERBOSE
struct pci_knowndev *kdp;
#endif
struct pci_class *classp, *subclassp;
pcireg_t rval;
rval = regs[o2i(PCI_ID_REG)];
#ifndef PCIVERBOSE
printf(" Vendor ID: 0x%04x\n", PCI_VENDOR(rval));
printf(" Device ID: 0x%04x\n", PCI_PRODUCT(rval));
#else
for (kdp = pci_knowndevs; kdp->vendorname != NULL; kdp++) {
if (kdp->vendor == PCI_VENDOR(rval) &&
(kdp->product == PCI_PRODUCT(rval) ||
(kdp->flags & PCI_KNOWNDEV_NOPROD) != 0)) {
break;
}
}
if (kdp->vendorname != NULL)
printf(" Vendor Name: %s (0x%04x)\n", kdp->vendorname,
PCI_VENDOR(rval));
else
printf(" Vendor ID: 0x%04x\n", PCI_VENDOR(rval));
if (kdp->productname != NULL && (kdp->flags & PCI_KNOWNDEV_NOPROD) == 0)
printf(" Device Name: %s (0x%04x)\n", kdp->productname,
PCI_PRODUCT(rval));
else
printf(" Device ID: 0x%04x\n", PCI_PRODUCT(rval));
#endif /* PCIVERBOSE */
rval = regs[o2i(PCI_COMMAND_STATUS_REG)];
printf(" Command register: 0x%04x\n", rval & 0xffff);
onoff("I/O space accesses", PCI_COMMAND_IO_ENABLE);
onoff("Memory space accesses", PCI_COMMAND_MEM_ENABLE);
onoff("Bus mastering", PCI_COMMAND_MASTER_ENABLE);
onoff("Special cycles", PCI_COMMAND_SPECIAL_ENABLE);
onoff("MWI transactions", PCI_COMMAND_INVALIDATE_ENABLE);
onoff("Palette snooping", PCI_COMMAND_PALETTE_ENABLE);
onoff("Parity error checking", PCI_COMMAND_PARITY_ENABLE);
onoff("Address/data stepping", PCI_COMMAND_STEPPING_ENABLE);
onoff("System error (SERR)", PCI_COMMAND_SERR_ENABLE);
onoff("Fast back-to-back transactions", PCI_COMMAND_BACKTOBACK_ENABLE);
printf(" Status register: 0x%04x\n", (rval >> 16) & 0xffff);
onoff("66 MHz capable", PCI_STATUS_66MHZ_SUPPORT);
onoff("User Definable Features (UDF) support", PCI_STATUS_UDF_SUPPORT);
onoff("Fast back-to-back capable", PCI_STATUS_BACKTOBACK_SUPPORT);
onoff("Data parity error detected", PCI_STATUS_PARITY_ERROR);
printf(" DEVSEL timing: ");
switch (rval & PCI_STATUS_DEVSEL_MASK) {
case PCI_STATUS_DEVSEL_FAST:
printf("fast");
break;
case PCI_STATUS_DEVSEL_MEDIUM:
printf("medium");
break;
case PCI_STATUS_DEVSEL_SLOW:
printf("slow");
break;
default:
printf("unknown/reserved"); /* XXX */
break;
}
printf(" (0x%x)\n", (rval & PCI_STATUS_DEVSEL_MASK) >> 25);
onoff("Slave signaled Target Abort", PCI_STATUS_TARGET_TARGET_ABORT);
onoff("Master received Target Abort", PCI_STATUS_MASTER_TARGET_ABORT);
onoff("Master received Master Abort", PCI_STATUS_MASTER_ABORT);
onoff("Asserted System Error (SERR)", PCI_STATUS_SPECIAL_ERROR);
onoff("Parity error detected", PCI_STATUS_PARITY_DETECT);
rval = regs[o2i(PCI_CLASS_REG)];
for (classp = pci_class; classp->name != NULL; classp++) {
if (PCI_CLASS(rval) == classp->val)
break;
}
subclassp = (classp->name != NULL) ? classp->subclasses : NULL;
while (subclassp && subclassp->name != NULL) {
if (PCI_SUBCLASS(rval) == subclassp->val)
break;
subclassp++;
}
if (classp->name != NULL) {
printf(" Class Name: %s (0x%02x)\n", classp->name,
PCI_CLASS(rval));
if (subclassp != NULL && subclassp->name != NULL)
printf(" Subclass Name: %s (0x%02x)\n",
subclassp->name, PCI_SUBCLASS(rval));
else
printf(" Subclass ID: 0x%02x\n", PCI_SUBCLASS(rval));
} else {
printf(" Class ID: 0x%02x\n", PCI_CLASS(rval));
printf(" Subclass ID: 0x%02x\n", PCI_SUBCLASS(rval));
}
printf(" Interface: 0x%02x\n", PCI_INTERFACE(rval));
printf(" Revision ID: 0x%02x\n", PCI_REVISION(rval));
rval = regs[o2i(PCI_BHLC_REG)];
printf(" BIST: 0x%02x\n", PCI_BIST(rval));
printf(" Header Type: 0x%02x%s (0x%02x)\n", PCI_HDRTYPE_TYPE(rval),
PCI_HDRTYPE_MULTIFN(rval) ? "+multifunction" : "",
PCI_HDRTYPE(rval));
printf(" Latency Timer: 0x%02x\n", PCI_LATTIMER(rval));
printf(" Cache Line Size: 0x%02x\n", PCI_CACHELINE(rval));
}
static void
pci_conf_print_bar(pc, tag, regs, reg, name)
pci_chipset_tag_t pc;
pcitag_t tag;
const pcireg_t *regs;
int reg;
const char *name;
{
int s;
pcireg_t mask, rval;
/*
* Section 6.2.5.1, `Address Maps', tells us that:
*
* 1) The builtin software should have already mapped the
* device in a reasonable way.
*
* 2) A device which wants 2^n bytes of memory will hardwire
* the bottom n bits of the address to 0. As recommended,
* we write all 1s and see what we get back.
*/
rval = regs[o2i(reg)];
if (rval != 0) {
/*
* The following sequence seems to make some devices
* (e.g. host bus bridges, which don't normally
* have their space mapped) very unhappy, to
* the point of crashing the system.
*
* Therefore, if the mapping register is zero to
* start out with, don't bother trying.
*/
s = splhigh();
pci_conf_write(pc, tag, reg, 0xffffffff);
mask = pci_conf_read(pc, tag, reg);
pci_conf_write(pc, tag, reg, rval);
splx(s);
} else
mask = 0;
printf(" Base address register at 0x%02x", reg);
if (name)
printf(" (%s)", name);
printf("\n ");
if (rval == 0) {
printf("not implemented(?)\n");
return;
}
printf("type: ");
if (PCI_MAPREG_TYPE(rval) == PCI_MAPREG_TYPE_MEM) {
const char *type, *cache;
switch (PCI_MAPREG_MEM_TYPE(rval)) {
case PCI_MAPREG_MEM_TYPE_32BIT:
type = "32-bit";
break;
case PCI_MAPREG_MEM_TYPE_32BIT_1M:
type = "32-bit-1M";
break;
case PCI_MAPREG_MEM_TYPE_64BIT:
type = "64-bit";
break;
default:
type = "unknown (XXX)";
break;
}
if (PCI_MAPREG_MEM_CACHEABLE(rval))
cache = "";
else
cache = "non";
printf("%s %scacheable memory\n", type, cache);
printf(" base: 0x%08x, size: 0x%08x\n",
PCI_MAPREG_MEM_ADDR(rval),
PCI_MAPREG_MEM_SIZE(mask));
} else {
printf("i/o\n");
printf(" base: 0x%08x, size: 0x%08x\n",
PCI_MAPREG_IO_ADDR(rval),
PCI_MAPREG_IO_SIZE(mask));
}
}
static void
pci_conf_print_regs(regs, first, pastlast)
const pcireg_t *regs;
int first, pastlast;
{
int off, needaddr, neednl;
needaddr = 1;
neednl = 0;
for (off = first; off < pastlast; off += 4) {
if ((off % 16) == 0 || needaddr) {
printf(" 0x%02x:", off);
needaddr = 0;
}
printf(" 0x%08x", regs[o2i(off)]);
neednl = 1;
if ((off % 16) == 12) {
printf("\n");
neednl = 0;
}
}
if (neednl)
printf("\n");
}
static void
pci_conf_print_type0(pc, tag, regs)
pci_chipset_tag_t pc;
pcitag_t tag;
const pcireg_t *regs;
{
int off;
pcireg_t rval;
for (off = PCI_MAPREG_START; off < PCI_MAPREG_END; off += 4)
pci_conf_print_bar(pc, tag, regs, off, NULL);
printf(" Cardbus CIS Pointer: 0x%08x\n", regs[o2i(0x28)]);
rval = regs[o2i(0x2c)];
printf(" Subsystem vendor ID: 0x%04x\n", PCI_VENDOR(rval));
printf(" Subsystem ID: 0x%04x\n", PCI_PRODUCT(rval));
/* XXX */
printf(" Expansion ROM Base Address: 0x%08x\n", regs[o2i(0x30)]);
printf(" Reserved @ 0x34: 0x%08x\n", regs[o2i(0x34)]);
printf(" Reserved @ 0x38: 0x%08x\n", regs[o2i(0x38)]);
rval = regs[o2i(PCI_INTERRUPT_REG)];
printf(" Maximum Latency: 0x%02x\n", (rval >> 24) & 0xff);
printf(" Minimum Grant: 0x%02x\n", (rval >> 16) & 0xff);
printf(" Interrupt pin: 0x%02x ", PCI_INTERRUPT_PIN(rval));
switch (PCI_INTERRUPT_PIN(rval)) {
case PCI_INTERRUPT_PIN_NONE:
printf("(none)");
break;
case PCI_INTERRUPT_PIN_A:
printf("(pin A)");
break;
case PCI_INTERRUPT_PIN_B:
printf("(pin B)");
break;
case PCI_INTERRUPT_PIN_C:
printf("(pin C)");
break;
case PCI_INTERRUPT_PIN_D:
printf("(pin D)");
break;
default:
printf("(???)");
break;
}
printf("\n");
printf(" Interrupt line: 0x%02x\n", PCI_INTERRUPT_LINE(rval));
}
static void
pci_conf_print_type1(pc, tag, regs)
pci_chipset_tag_t pc;
pcitag_t tag;
const pcireg_t *regs;
{
int off;
pcireg_t rval;
/*
* XXX these need to be printed in more detail, need to be
* XXX checked against specs/docs, etc.
*
* This layout was cribbed from the TI PCI2030 PCI-to-PCI
* Bridge chip documentation, and may not be correct with
* respect to various standards. (XXX)
*/
for (off = 0x10; off < 0x18; off += 4)
pci_conf_print_bar(pc, tag, regs, off, NULL);
printf(" Primary bus number: 0x%02x\n",
(regs[o2i(0x18)] >> 0) & 0xff);
printf(" Secondary bus number: 0x%02x\n",
(regs[o2i(0x18)] >> 8) & 0xff);
printf(" Subordinate bus number: 0x%02x\n",
(regs[o2i(0x18)] >> 16) & 0xff);
printf(" Secondary bus latency timer: 0x%02x\n",
(regs[o2i(0x18)] >> 24) & 0xff);
rval = (regs[o2i(0x1c)] >> 16) & 0xffff;
printf(" Secondary status register: 0x%04x\n", rval); /* XXX bits */
onoff("66 MHz capable", 0x0020);
onoff("User Definable Features (UDF) support", 0x0040);
onoff("Fast back-to-back capable", 0x0080);
onoff("Data parity error detected", 0x0100);
printf(" DEVSEL timing: ");
switch (rval & 0x0600) {
case 0x0000:
printf("fast");
break;
case 0x0200:
printf("medium");
break;
case 0x0400:
printf("slow");
break;
default:
printf("unknown/reserved"); /* XXX */
break;
}
printf(" (0x%x)\n", (rval & 0x0600) >> 9);
onoff("Signaled Target Abort", 0x0800);
onoff("Received Target Abort", 0x1000);
onoff("Received Master Abort", 0x2000);
onoff("System Error", 0x4000);
onoff("Parity Error", 0x8000);
/* XXX Print more prettily */
printf(" I/O region:\n");
printf(" base register: 0x%02x\n", (regs[o2i(0x1c)] >> 0) & 0xff);
printf(" limit register: 0x%02x\n", (regs[o2i(0x1c)] >> 8) & 0xff);
printf(" base upper 16 bits register: 0x%04x\n",
(regs[o2i(0x30)] >> 0) & 0xffff);
printf(" limit upper 16 bits register: 0x%04x\n",
(regs[o2i(0x30)] >> 16) & 0xffff);
/* XXX Print more prettily */
printf(" Memory region:\n");
printf(" base register: 0x%04x\n",
(regs[o2i(0x20)] >> 0) & 0xffff);
printf(" limit register: 0x%04x\n",
(regs[o2i(0x20)] >> 16) & 0xffff);
/* XXX Print more prettily */
printf(" Prefetchable memory region:\n");
printf(" base register: 0x%04x\n",
(regs[o2i(0x24)] >> 0) & 0xffff);
printf(" limit register: 0x%04x\n",
(regs[o2i(0x24)] >> 16) & 0xffff);
printf(" base upper 32 bits register: 0x%08x\n", regs[o2i(0x28)]);
printf(" limit upper 32 bits register: 0x%08x\n", regs[o2i(0x2c)]);
printf(" Reserved @ 0x34: 0x%08x\n", regs[o2i(0x34)]);
/* XXX */
printf(" Expansion ROM Base Address: 0x%08x\n", regs[o2i(0x38)]);
printf(" Interrupt line: 0x%02x\n",
(regs[o2i(0x3c)] >> 0) & 0xff);
printf(" Interrupt pin: 0x%02x ",
(regs[o2i(0x3c)] >> 8) & 0xff);
switch ((regs[o2i(0x3c)] >> 8) & 0xff) {
case PCI_INTERRUPT_PIN_NONE:
printf("(none)");
break;
case PCI_INTERRUPT_PIN_A:
printf("(pin A)");
break;
case PCI_INTERRUPT_PIN_B:
printf("(pin B)");
break;
case PCI_INTERRUPT_PIN_C:
printf("(pin C)");
break;
case PCI_INTERRUPT_PIN_D:
printf("(pin D)");
break;
default:
printf("(???)");
break;
}
printf("\n");
rval = (regs[o2i(0x3c)] >> 16) & 0xffff;
printf(" Bridge control register: 0x%04x\n", rval); /* XXX bits */
onoff("Parity error response", 0x0001);
onoff("Secondary SERR forwarding", 0x0002);
onoff("ISA enable", 0x0004);
onoff("VGA enable", 0x0008);
onoff("Master abort reporting", 0x0020);
onoff("Secondary bus reset", 0x0040);
onoff("Fast back-to-back capable", 0x0080);
}
static void
pci_conf_print_type2(pc, tag, regs)
pci_chipset_tag_t pc;
pcitag_t tag;
const pcireg_t *regs;
{
pcireg_t rval;
/*
* XXX these need to be printed in more detail, need to be
* XXX checked against specs/docs, etc.
*
* This layout was cribbed from the TI PCI1130 PCI-to-CardBus
* controller chip documentation, and may not be correct with
* respect to various standards. (XXX)
*/
pci_conf_print_bar(pc, tag, regs, 0x10,
"CardBus socket/ExCA registers");
printf(" Reserved @ 0x14: 0x%04x\n",
(regs[o2i(0x14)] >> 0) & 0xffff);
rval = (regs[o2i(0x14)] >> 16) & 0xffff;
printf(" Secondary status register: 0x%04x\n", rval);
onoff("66 MHz capable", 0x0020);
onoff("User Definable Features (UDF) support", 0x0040);
onoff("Fast back-to-back capable", 0x0080);
onoff("Data parity error detection", 0x0100);
printf(" DEVSEL timing: ");
switch (rval & 0x0600) {
case 0x0000:
printf("fast");
break;
case 0x0200:
printf("medium");
break;
case 0x0400:
printf("slow");
break;
default:
printf("unknown/reserved"); /* XXX */
break;
}
printf(" (0x%x)\n", (rval & 0x0600) >> 9);
onoff("PCI target aborts terminate CardBus bus master transactions",
0x0800);
onoff("CardBus target aborts terminate PCI bus master transactions",
0x1000);
onoff("Bus initiator aborts terminate initiator transactions",
0x2000);
onoff("System error", 0x4000);
onoff("Parity error", 0x8000);
printf(" PCI bus number: 0x%02x\n",
(regs[o2i(0x18)] >> 0) & 0xff);
printf(" CardBus bus number: 0x%02x\n",
(regs[o2i(0x18)] >> 8) & 0xff);
printf(" Subordinate bus number: 0x%02x\n",
(regs[o2i(0x18)] >> 16) & 0xff);
printf(" CardBus latency timer: 0x%02x\n",
(regs[o2i(0x18)] >> 24) & 0xff);
/* XXX Print more prettily */
printf(" CardBus memory region 0:\n");
printf(" base register: 0x%08x\n", regs[o2i(0x1c)]);
printf(" limit register: 0x%08x\n", regs[o2i(0x20)]);
printf(" CardBus memory region 1:\n");
printf(" base register: 0x%08x\n", regs[o2i(0x24)]);
printf(" limit register: 0x%08x\n", regs[o2i(0x28)]);
printf(" CardBus I/O region 0:\n");
printf(" base register: 0x%08x\n", regs[o2i(0x2c)]);
printf(" limit register: 0x%08x\n", regs[o2i(0x30)]);
printf(" CardBus I/O region 1:\n");
printf(" base register: 0x%08x\n", regs[o2i(0x34)]);
printf(" limit register: 0x%08x\n", regs[o2i(0x38)]);
printf(" Interrupt line: 0x%02x\n",
(regs[o2i(0x3c)] >> 0) & 0xff);
printf(" Interrupt pin: 0x%02x ",
(regs[o2i(0x3c)] >> 8) & 0xff);
switch ((regs[o2i(0x3c)] >> 8) & 0xff) {
case PCI_INTERRUPT_PIN_NONE:
printf("(none)");
break;
case PCI_INTERRUPT_PIN_A:
printf("(pin A)");
break;
case PCI_INTERRUPT_PIN_B:
printf("(pin B)");
break;
case PCI_INTERRUPT_PIN_C:
printf("(pin C)");
break;
case PCI_INTERRUPT_PIN_D:
printf("(pin D)");
break;
default:
printf("(???)");
break;
}
printf("\n");
rval = (regs[o2i(0x3c)] >> 16) & 0xffff;
printf(" Bridge control register: 0x%04x\n", rval);
onoff("Parity error response", 0x0001);
onoff("CardBus SERR forwarding", 0x0002);
onoff("ISA enable", 0x0004);
onoff("VGA enable", 0x0008);
onoff("CardBus master abort reporting", 0x0020);
onoff("CardBus reset", 0x0040);
onoff("Functional interrupts routed by ExCA registers", 0x0080);
onoff("Memory window 0 prefetchable", 0x0100);
onoff("Memory window 1 prefetchable", 0x0200);
onoff("Write posting enable", 0x0400);
rval = regs[o2i(0x40)];
printf(" Subsystem vendor ID: 0x%04x\n", PCI_VENDOR(rval));
printf(" Subsystem ID: 0x%04x\n", PCI_PRODUCT(rval));
pci_conf_print_bar(pc, tag, regs, 0x44, "legacy-mode registers");
}
void
pci_conf_print(pc, tag, printfn)
pci_chipset_tag_t pc;
pcitag_t tag;
void (*printfn)(pci_chipset_tag_t, pcitag_t, const pcireg_t *);
{
pcireg_t regs[o2i(256)];
int off, endoff, hdrtype;
const char *typename;
void (*typeprintfn)(pci_chipset_tag_t, pcitag_t, const pcireg_t *);
printf("PCI configuration registers:\n");
for (off = 0; off < 256; off += 4)
regs[o2i(off)] = pci_conf_read(pc, tag, off);
/* common header */
printf(" Common header:\n");
pci_conf_print_regs(regs, 0, 16);
printf("\n");
pci_conf_print_common(pc, tag, regs);
printf("\n");
/* type-dependent header */
hdrtype = PCI_HDRTYPE_TYPE(regs[o2i(PCI_BHLC_REG)]);
switch (hdrtype) { /* XXX make a table, eventually */
case 0:
/* Standard device header */
typename = "\"normal\" device";
typeprintfn = &pci_conf_print_type0;
endoff = 64;
break;
case 1:
/* PCI-PCI bridge header */
typename = "PCI-PCI bridge";
typeprintfn = &pci_conf_print_type1;
endoff = 64;
break;
case 2:
/* PCI-CardBus bridge header */
typename = "PCI-CardBus bridge";
typeprintfn = &pci_conf_print_type2;
endoff = 72;
break;
default:
typename = NULL;
typeprintfn = 0;
endoff = 64;
break;
}
printf(" Type %d ", hdrtype);
if (typename != NULL)
printf("(%s) ", typename);
printf("header:\n");
pci_conf_print_regs(regs, 16, endoff);
printf("\n");
if (typeprintfn)
(*typeprintfn)(pc, tag, regs);
else
printf(" Don't know how to pretty-print type %d header.\n",
hdrtype);
printf("\n");
/* device-dependent header */
printf(" Device-dependent header:\n");
pci_conf_print_regs(regs, endoff, 256);
printf("\n");
if (printfn)
(*printfn)(pc, tag, regs);
else
printf(" Don't know how to pretty-print device-dependent header.\n");
printf("\n");
}
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