/*
* The PCI Utilities -- Manipulate PCI Configuration Registers
*
* Copyright (c) 1998--2008 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <errno.h>
#define PCIUTILS_SETPCI
#include "pciutils.h"
static int force; /* Don't complain if no devices match */
static int verbose; /* Verbosity level */
static int demo_mode; /* Only show */
const char program_name[] = "setpci";
static struct pci_access *pacc;
struct value {
unsigned int value;
unsigned int mask;
};
struct op {
struct op *next;
struct pci_dev **dev_vector;
u16 cap_type; /* PCI_CAP_xxx or 0 */
u16 cap_id;
unsigned int addr;
unsigned int width; /* Byte width of the access */
unsigned int num_values; /* Number of values to write; 0=read */
struct value values[0];
};
static struct op *first_op, **last_op = &first_op;
static unsigned int max_values[] = { 0, 0xff, 0xffff, 0, 0xffffffff };
static struct pci_dev **
select_devices(struct pci_filter *filt)
{
struct pci_dev *z, **a, **b;
int cnt = 1;
for (z=pacc->devices; z; z=z->next)
if (pci_filter_match(filt, z))
cnt++;
a = b = xmalloc(sizeof(struct device *) * cnt);
for (z=pacc->devices; z; z=z->next)
if (pci_filter_match(filt, z))
*a++ = z;
*a = NULL;
return b;
}
static void PCI_PRINTF(1,2)
trace(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
if (verbose)
vprintf(fmt, args);
va_end(args);
}
static void
exec_op(struct op *op, struct pci_dev *dev)
{
const char * const formats[] = { NULL, " %02x", " %04x", NULL, " %08x" };
const char * const mask_formats[] = { NULL, " %02x->(%02x:%02x)->%02x", " %04x->(%04x:%04x)->%04x", NULL, " %08x->(%08x:%08x)->%08x" };
unsigned int i, x, y;
int addr = 0;
int width = op->width;
char slot[16];
sprintf(slot, "%04x:%02x:%02x.%x", dev->domain, dev->bus, dev->dev, dev->func);
trace("%s ", slot);
if (op->cap_type)
{
struct pci_cap *cap;
cap = pci_find_cap(dev, op->cap_id, op->cap_type);
if (cap)
addr = cap->addr;
else
die("%s: %s %04x not found", slot, ((op->cap_type == PCI_CAP_NORMAL) ? "Capability" : "Extended capability"), op->cap_id);
trace(((op->cap_type == PCI_CAP_NORMAL) ? "(cap %02x @%02x) " : "(ecap %04x @%03x) "), op->cap_id, addr);
}
addr += op->addr;
trace("@%02x", addr);
/* We have already checked it when parsing, but addressing relative to capabilities can change the address. */
if (addr & (width-1))
die("%s: Unaligned access of width %d to register %04x", slot, width, addr);
if (addr + width > 0x1000)
die("%s: Access of width %d to register %04x out of range", slot, width, addr);
if (op->num_values)
{
for (i=0; i<op->num_values; i++)
{
if ((op->values[i].mask & max_values[width]) == max_values[width])
{
x = op->values[i].value;
trace(formats[width], op->values[i].value);
}
else
{
switch (width)
{
case 1:
y = pci_read_byte(dev, addr);
break;
case 2:
y = pci_read_word(dev, addr);
break;
default:
y = pci_read_long(dev, addr);
break;
}
x = (y & ~op->values[i].mask) | op->values[i].value;
trace(mask_formats[width], y, op->values[i].value, op->values[i].mask, x);
}
if (!demo_mode)
{
switch (width)
{
case 1:
pci_write_byte(dev, addr, x);
break;
case 2:
pci_write_word(dev, addr, x);
break;
default:
pci_write_long(dev, addr, x);
break;
}
}
addr += width;
}
trace("\n");
}
else
{
trace(" = ");
switch (width)
{
case 1:
x = pci_read_byte(dev, addr);
break;
case 2:
x = pci_read_word(dev, addr);
break;
default:
x = pci_read_long(dev, addr);
break;
}
printf(formats[width]+1, x);
putchar('\n');
}
}
static void
execute(struct op *op)
{
struct pci_dev **vec = NULL;
struct pci_dev **pdev, *dev;
struct op *oops;
while (op)
{
pdev = vec = op->dev_vector;
while (dev = *pdev++)
for (oops=op; oops && oops->dev_vector == vec; oops=oops->next)
exec_op(oops, dev);
while (op && op->dev_vector == vec)
op = op->next;
}
}
static void
scan_ops(struct op *op)
{
if (demo_mode)
return;
while (op)
{
if (op->num_values)
pacc->writeable = 1;
op = op->next;
}
}
struct reg_name {
unsigned int cap;
unsigned int offset;
unsigned int width;
const char *name;
};
static const struct reg_name pci_reg_names[] = {
{ 0, 0x00, 2, "VENDOR_ID" },
{ 0, 0x02, 2, "DEVICE_ID" },
{ 0, 0x04, 2, "COMMAND" },
{ 0, 0x06, 2, "STATUS" },
{ 0, 0x08, 1, "REVISION" },
{ 0, 0x09, 1, "CLASS_PROG" },
{ 0, 0x0a, 2, "CLASS_DEVICE" },
{ 0, 0x0c, 1, "CACHE_LINE_SIZE" },
{ 0, 0x0d, 1, "LATENCY_TIMER" },
{ 0, 0x0e, 1, "HEADER_TYPE" },
{ 0, 0x0f, 1, "BIST" },
{ 0, 0x10, 4, "BASE_ADDRESS_0" },
{ 0, 0x14, 4, "BASE_ADDRESS_1" },
{ 0, 0x18, 4, "BASE_ADDRESS_2" },
{ 0, 0x1c, 4, "BASE_ADDRESS_3" },
{ 0, 0x20, 4, "BASE_ADDRESS_4" },
{ 0, 0x24, 4, "BASE_ADDRESS_5" },
{ 0, 0x28, 4, "CARDBUS_CIS" },
{ 0, 0x2c, 4, "SUBSYSTEM_VENDOR_ID" },
{ 0, 0x2e, 2, "SUBSYSTEM_ID" },
{ 0, 0x30, 4, "ROM_ADDRESS" },
{ 0, 0x3c, 1, "INTERRUPT_LINE" },
{ 0, 0x3d, 1, "INTERRUPT_PIN" },
{ 0, 0x3e, 1, "MIN_GNT" },
{ 0, 0x3f, 1, "MAX_LAT" },
{ 0, 0x18, 1, "PRIMARY_BUS" },
{ 0, 0x19, 1, "SECONDARY_BUS" },
{ 0, 0x1a, 1, "SUBORDINATE_BUS" },
{ 0, 0x1b, 1, "SEC_LATENCY_TIMER" },
{ 0, 0x1c, 1, "IO_BASE" },
{ 0, 0x1d, 1, "IO_LIMIT" },
{ 0, 0x1e, 2, "SEC_STATUS" },
{ 0, 0x20, 2, "MEMORY_BASE" },
{ 0, 0x22, 2, "MEMORY_LIMIT" },
{ 0, 0x24, 2, "PREF_MEMORY_BASE" },
{ 0, 0x26, 2, "PREF_MEMORY_LIMIT" },
{ 0, 0x28, 4, "PREF_BASE_UPPER32" },
{ 0, 0x2c, 4, "PREF_LIMIT_UPPER32" },
{ 0, 0x30, 2, "IO_BASE_UPPER16" },
{ 0, 0x32, 2, "IO_LIMIT_UPPER16" },
{ 0, 0x38, 4, "BRIDGE_ROM_ADDRESS" },
{ 0, 0x3e, 2, "BRIDGE_CONTROL" },
{ 0, 0x10, 4, "CB_CARDBUS_BASE" },
{ 0, 0x14, 2, "CB_CAPABILITIES" },
{ 0, 0x16, 2, "CB_SEC_STATUS" },
{ 0, 0x18, 1, "CB_BUS_NUMBER" },
{ 0, 0x19, 1, "CB_CARDBUS_NUMBER" },
{ 0, 0x1a, 1, "CB_SUBORDINATE_BUS" },
{ 0, 0x1b, 1, "CB_CARDBUS_LATENCY" },
{ 0, 0x1c, 4, "CB_MEMORY_BASE_0" },
{ 0, 0x20, 4, "CB_MEMORY_LIMIT_0" },
{ 0, 0x24, 4, "CB_MEMORY_BASE_1" },
{ 0, 0x28, 4, "CB_MEMORY_LIMIT_1" },
{ 0, 0x2c, 2, "CB_IO_BASE_0" },
{ 0, 0x2e, 2, "CB_IO_BASE_0_HI" },
{ 0, 0x30, 2, "CB_IO_LIMIT_0" },
{ 0, 0x32, 2, "CB_IO_LIMIT_0_HI" },
{ 0, 0x34, 2, "CB_IO_BASE_1" },
{ 0, 0x36, 2, "CB_IO_BASE_1_HI" },
{ 0, 0x38, 2, "CB_IO_LIMIT_1" },
{ 0, 0x3a, 2, "CB_IO_LIMIT_1_HI" },
{ 0, 0x40, 2, "CB_SUBSYSTEM_VENDOR_ID" },
{ 0, 0x42, 2, "CB_SUBSYSTEM_ID" },
{ 0, 0x44, 4, "CB_LEGACY_MODE_BASE" },
{ 0x10001, 0, 0, "CAP_PM" },
{ 0x10002, 0, 0, "CAP_AGP" },
{ 0x10003, 0, 0, "CAP_VPD" },
{ 0x10004, 0, 0, "CAP_SLOTID" },
{ 0x10005, 0, 0, "CAP_MSI" },
{ 0x10006, 0, 0, "CAP_CHSWP" },
{ 0x10007, 0, 0, "CAP_PCIX" },
{ 0x10008, 0, 0, "CAP_HT" },
{ 0x10009, 0, 0, "CAP_VNDR" },
{ 0x1000a, 0, 0, "CAP_DBG" },
{ 0x1000b, 0, 0, "CAP_CCRC" },
{ 0x1000c, 0, 0, "CAP_HOTPLUG" },
{ 0x1000d, 0, 0, "CAP_SSVID" },
{ 0x1000e, 0, 0, "CAP_AGP3" },
{ 0x1000f, 0, 0, "CAP_SECURE" },
{ 0x10010, 0, 0, "CAP_EXP" },
{ 0x10011, 0, 0, "CAP_MSIX" },
{ 0x10012, 0, 0, "CAP_SATA" },
{ 0x10013, 0, 0, "CAP_AF" },
{ 0x20001, 0, 0, "ECAP_AER" },
{ 0x20002, 0, 0, "ECAP_VC" },
{ 0x20003, 0, 0, "ECAP_DSN" },
{ 0x20004, 0, 0, "ECAP_PB" },
{ 0x20005, 0, 0, "ECAP_RCLINK" },
{ 0x20006, 0, 0, "ECAP_RCILINK" },
{ 0x20007, 0, 0, "ECAP_RCECOLL" },
{ 0x20008, 0, 0, "ECAP_MFVC" },
{ 0x2000a, 0, 0, "ECAP_RBCB" },
{ 0x2000b, 0, 0, "ECAP_VNDR" },
{ 0x2000d, 0, 0, "ECAP_ACS" },
{ 0x2000e, 0, 0, "ECAP_ARI" },
{ 0x2000f, 0, 0, "ECAP_ATS" },
{ 0x20010, 0, 0, "ECAP_SRIOV" },
{ 0, 0, 0, NULL }
};
static void
dump_registers(void)
{
const struct reg_name *r;
printf("cap pos w name\n");
for (r = pci_reg_names; r->name; r++)
{
if (r->cap >= 0x20000)
printf("%04x", r->cap - 0x20000);
else if (r->cap)
printf(" %02x", r->cap - 0x10000);
else
printf(" ");
printf(" %02x %c %s\n", r->offset, "-BW?L"[r->width], r->name);
}
}
static void NONRET
usage(void)
{
fprintf(stderr,
"Usage: setpci [<options>] (<device>+ <reg>[=<values>]*)*\n"
"\n"
"General options:\n"
"-f\t\tDon't complain if there's nothing to do\n"
"-v\t\tBe verbose\n"
"-D\t\tList changes, don't commit them\n"
"--dumpregs\tDump all known register names and exit\n"
"\n"
"PCI access options:\n"
GENERIC_HELP
"\n"
"Setting commands:\n"
"<device>:\t-s [[[<domain>]:][<bus>]:][<slot>][.[<func>]]\n"
"\t\t-d [<vendor>]:[<device>]\n"
"<reg>:\t\t<base>[+<offset>][.(B|W|L)]\n"
"<base>:\t\t<address>\n"
"\t\t<named-register>\n"
"\t\t[E]CAP_<capability-name>\n"
"\t\t[E]CAP<capability-number>\n"
"<values>:\t<value>[,<value>...]\n"
"<value>:\t<hex>\n"
"\t\t<hex>:<mask>\n");
exit(0);
}
static void NONRET PCI_PRINTF(1,2)
parse_err(const char *msg, ...)
{
va_list args;
va_start(args, msg);
fprintf(stderr, "setpci: ");
vfprintf(stderr, msg, args);
fprintf(stderr, ".\nTry `setpci --help' for more information.\n");
exit(1);
}
static int
parse_options(int argc, char **argv)
{
const char opts[] = GENERIC_OPTIONS;
int i=1;
if (argc == 2)
{
if (!strcmp(argv[1], "--help"))
usage();
if (!strcmp(argv[1], "--version"))
{
puts("setpci version " PCIUTILS_VERSION);
exit(0);
}
if (!strcmp(argv[1], "--dumpregs"))
{
dump_registers();
exit(0);
}
}
while (i < argc && argv[i][0] == '-')
{
char *c = argv[i++] + 1;
char *d = c;
char *e;
while (*c)
switch (*c)
{
case 0:
break;
case 'v':
verbose++;
c++;
break;
case 'f':
force++;
c++;
break;
case 'D':
demo_mode++;
c++;
break;
default:
if (e = strchr(opts, *c))
{
char *arg;
c++;
if (e[1] == ':')
{
if (*c)
arg = c;
else if (i < argc)
arg = argv[i++];
else
parse_err("Option -%c requires an argument", *e);
c = "";
}
else
arg = NULL;
if (!parse_generic_option(*e, pacc, arg))
parse_err("Unable to parse option -%c", *e);
}
else
{
if (c != d)
parse_err("Invalid or misplaced option -%c", *c);
return i-1;
}
}
}
return i;
}
static int parse_filter(int argc, char **argv, int i, struct pci_filter *filter)
{
char *c = argv[i++];
char *d;
if (!c[1] || !strchr("sd", c[1]))
parse_err("Invalid option -%c", c[1]);
if (c[2])
d = (c[2] == '=') ? c+3 : c+2;
else if (i < argc)
d = argv[i++];
else
parse_err("Option -%c requires an argument", c[1]);
switch (c[1])
{
case 's':
if (d = pci_filter_parse_slot(filter, d))
parse_err("Unable to parse filter -s %s", d);
break;
case 'd':
if (d = pci_filter_parse_id(filter, d))
parse_err("Unable to parse filter -d %s", d);
break;
default:
parse_err("Unknown filter option -%c", c[1]);
}
return i;
}
static const struct reg_name *parse_reg_name(char *name)
{
const struct reg_name *r;
for (r = pci_reg_names; r->name; r++)
if (!strcasecmp(r->name, name))
return r;
return NULL;
}
static int parse_x32(char *c, char **stopp, unsigned int *resp)
{
char *stop;
unsigned long int l;
if (!*c)
return -1;
errno = 0;
l = strtoul(c, &stop, 16);
if (errno)
return -1;
if ((l & ~0U) != l)
return -1;
*resp = l;
if (*stop)
{
if (stopp)
*stopp = stop;
return 0;
}
else
{
if (stopp)
*stopp = NULL;
return 1;
}
}
static void parse_register(struct op *op, char *base)
{
const struct reg_name *r;
unsigned int cap;
op->cap_type = op->cap_id = 0;
if (parse_x32(base, NULL, &op->addr) > 0)
return;
else if (r = parse_reg_name(base))
{
switch (r->cap & 0xff0000)
{
case 0x10000:
op->cap_type = PCI_CAP_NORMAL;
break;
case 0x20000:
op->cap_type = PCI_CAP_EXTENDED;
break;
}
op->cap_id = r->cap & 0xffff;
op->addr = r->offset;
if (r->width && !op->width)
op->width = r->width;
return;
}
else if (!strncasecmp(base, "CAP", 3))
{
if (parse_x32(base+3, NULL, &cap) > 0 && cap < 0x100)
{
op->cap_type = PCI_CAP_NORMAL;
op->cap_id = cap;
op->addr = 0;
return;
}
}
else if (!strncasecmp(base, "ECAP", 4))
{
if (parse_x32(base+4, NULL, &cap) > 0 && cap < 0x1000)
{
op->cap_type = PCI_CAP_EXTENDED;
op->cap_id = cap;
op->addr = 0;
return;
}
}
parse_err("Unknown register \"%s\"", base);
}
static void parse_op(char *c, struct pci_dev **selected_devices)
{
char *base, *offset, *width, *value;
char *e, *f;
int n, j;
struct op *op;
/* Split the argument */
base = xstrdup(c);
if (value = strchr(base, '='))
*value++ = 0;
if (width = strchr(base, '.'))
*width++ = 0;
if (offset = strchr(base, '+'))
*offset++ = 0;
/* Look for setting of values and count how many */
n = 0;
if (value)
{
if (!*value)
parse_err("Missing value");
n++;
for (e=value; *e; e++)
if (*e == ',')
n++;
}
/* Allocate the operation */
op = xmalloc(sizeof(struct op) + n*sizeof(struct value));
op->dev_vector = selected_devices;
op->num_values = n;
/* What is the width suffix? */
if (width)
{
if (width[1])
parse_err("Invalid width \"%s\"", width);
switch (*width & 0xdf)
{
case 'B':
op->width = 1; break;
case 'W':
op->width = 2; break;
case 'L':
op->width = 4; break;
default:
parse_err("Invalid width \"%c\"", *width);
}
}
else
op->width = 0;
/* Find the register */
parse_register(op, base);
if (!op->width)
parse_err("Missing width");
/* Add offset */
if (offset)
{
unsigned int off;
if (parse_x32(offset, NULL, &off) <= 0 || off >= 0x1000)
parse_err("Invalid offset \"%s\"", offset);
op->addr += off;
}
/* Check range */
if (op->addr >= 0x1000 || op->addr + op->width*(n ? n : 1) > 0x1000)
parse_err("Register number %02x out of range", op->addr);
if (op->addr & (op->width - 1))
parse_err("Unaligned register address %02x", op->addr);
/* Parse the values */
for (j=0; j<n; j++)
{
unsigned int ll, lim;
e = strchr(value, ',');
if (e)
*e++ = 0;
if (parse_x32(value, &f, &ll) < 0 || f && *f != ':')
parse_err("Invalid value \"%s\"", value);
lim = max_values[op->width];
if (ll > lim && ll < ~0UL - lim)
parse_err("Value \"%s\" is out of range", value);
op->values[j].value = ll;
if (f && *f == ':')
{
if (parse_x32(f+1, NULL, &ll) <= 0)
parse_err("Invalid mask \"%s\"", f+1);
if (ll > lim && ll < ~0UL - lim)
parse_err("Mask \"%s\" is out of range", f+1);
op->values[j].mask = ll;
op->values[j].value &= ll;
}
else
op->values[j].mask = ~0U;
value = e;
}
*last_op = op;
last_op = &op->next;
op->next = NULL;
}
static void parse_ops(int argc, char **argv, int i)
{
enum { STATE_INIT, STATE_GOT_FILTER, STATE_GOT_OP } state = STATE_INIT;
struct pci_filter filter;
struct pci_dev **selected_devices = NULL;
while (i < argc)
{
char *c = argv[i++];
if (*c == '-')
{
if (state != STATE_GOT_FILTER)
pci_filter_init(pacc, &filter);
i = parse_filter(argc, argv, i-1, &filter);
state = STATE_GOT_FILTER;
}
else
{
if (state == STATE_INIT)
parse_err("Filter specification expected");
if (state == STATE_GOT_FILTER)
selected_devices = select_devices(&filter);
if (!selected_devices[0] && !force)
fprintf(stderr, "setpci: Warning: No devices selected for \"%s\".\n", c);
parse_op(c, selected_devices);
state = STATE_GOT_OP;
}
}
if (state == STATE_INIT)
parse_err("No operation specified");
}
int
main(int argc, char **argv)
{
int i;
pacc = pci_alloc();
pacc->error = die;
i = parse_options(argc, argv);
pci_init(pacc);
pci_scan_bus(pacc);
parse_ops(argc, argv, i);
scan_ops(first_op);
execute(first_op);
return 0;
}
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