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device/device.h: Drop multiple links

Browse Source 
Multiple links are unused throughout the tree and make the code more
confusing as an iteration over all busses is needed to get downstream
devices. This also not done consistently e.g. the allocator does not
care about multiple links on busses. A better way of dealing multiple
links below a device is to feature dummy devices with each their
respective bus.

This drops the sconfig capability to declare the same device multiple
times which was previously used to declare multiple links.

Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: Iab6fe269faef46ae77ed1ea425440cf5c7dbd49b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78328
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jincheng Li <jincheng.li@intel.com>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
This commit is contained in:
Arthur Heymans
2023-08-24 15:12:19 +02:00
committed by Felix Held
parent 27ce0ec2b6
commit 80c79a5dc3
16 changed files with 187 additions and 355 deletions
Download Patch File Download Diff File Expand all files Collapse all files

85
src/arch/x86/mpspec.c
View File

@@ -282,48 +282,46 @@ void smp_write_intsrc_pci_bridge(struct mp_config_table *mc,
int srcbus;
int slot;
struct bus *link;
unsigned char dstirq_x[4];
for (link = dev->link_list; link; link = link->next) {
if (!dev->link_list)
return;
child = link->children;
srcbus = link->secondary;
child = dev->link_list->children;
srcbus = dev->link_list->secondary;
while (child) {
if (child->path.type != DEVICE_PATH_PCI)
goto next;
while (child) {
if (child->path.type != DEVICE_PATH_PCI)
goto next;
slot = (child->path.pci.devfn >> 3);
/* round pins */
slot = (child->path.pci.devfn >> 3);
/* round pins */
for (i = 0; i < 4; i++)
dstirq_x[i] = dstirq[(i + slot) % 4];
if ((child->class >> 16) != PCI_BASE_CLASS_BRIDGE) {
/* pci device */
printk(BIOS_DEBUG, "route irq: %s\n",
dev_path(child));
for (i = 0; i < 4; i++)
dstirq_x[i] = dstirq[(i + slot) % 4];
if ((child->class >> 16) != PCI_BASE_CLASS_BRIDGE) {
/* pci device */
printk(BIOS_DEBUG, "route irq: %s\n",
dev_path(child));
for (i = 0; i < 4; i++)
smp_write_intsrc(mc, irqtype, irqflag,
srcbus, (slot<<2)|i, dstapic,
dstirq_x[i]);
goto next;
}
switch (child->class>>8) {
case PCI_CLASS_BRIDGE_PCI:
case PCI_CLASS_BRIDGE_PCMCIA:
case PCI_CLASS_BRIDGE_CARDBUS:
printk(BIOS_DEBUG, "route irq bridge: %s\n",
dev_path(child));
smp_write_intsrc_pci_bridge(mc, irqtype,
irqflag, child, dstapic, dstirq_x);
}
next:
child = child->sibling;
smp_write_intsrc(mc, irqtype, irqflag,
srcbus, (slot<<2)|i, dstapic,
dstirq_x[i]);
goto next;
}
switch (child->class>>8) {
case PCI_CLASS_BRIDGE_PCI:
case PCI_CLASS_BRIDGE_PCMCIA:
case PCI_CLASS_BRIDGE_CARDBUS:
printk(BIOS_DEBUG, "route irq bridge: %s\n",
dev_path(child));
smp_write_intsrc_pci_bridge(mc, irqtype,
irqflag, child, dstapic, dstirq_x);
}
next:
child = child->sibling;
}
}
@@ -478,17 +476,16 @@ void mptable_write_buses(struct mp_config_table *mc, int *max_pci_bus,
memset(buses, 0, sizeof(buses));
for (dev = all_devices; dev; dev = dev->next) {
struct bus *bus;
for (bus = dev->link_list; bus; bus = bus->next) {
if (bus->secondary > 255) {
printk(BIOS_ERR,
"A bus claims to have a bus ID > 255?!? Aborting");
return;
}
buses[bus->secondary] = 1;
if (highest < bus->secondary)
highest = bus->secondary;
struct bus *bus = dev->link_list;
if (!bus)
continue;
if (bus->secondary > 255) {
printk(BIOS_ERR, "A bus claims to have a bus ID > 255?!? Aborting\n");
return;
}
buses[bus->secondary] = 1;
if (highest < bus->secondary)
highest = bus->secondary;
}
for (i = 0; i <= highest; i++) {
if (buses[i]) {

79
src/device/device.c
View File

@@ -187,13 +187,11 @@ static void read_resources(struct bus *bus)
{
struct device *curdev;
printk(BIOS_SPEW, "%s %s segment group %d bus %d link: %d\n", dev_path(bus->dev),
__func__, bus->segment_group, bus->secondary, bus->link_num);
printk(BIOS_SPEW, "%s %s segment group %d bus %d\n", dev_path(bus->dev),
__func__, bus->segment_group, bus->secondary);
/* Walk through all devices and find which resources they need. */
for (curdev = bus->children; curdev; curdev = curdev->sibling) {
struct bus *link;
if (!curdev->enabled)
continue;
@@ -207,12 +205,12 @@ static void read_resources(struct bus *bus)
curdev->ops->read_resources(curdev);
/* Read in the resources behind the current device's links. */
for (link = curdev->link_list; link; link = link->next)
read_resources(link);
if (curdev->link_list)
read_resources(curdev->link_list);
}
post_log_clear();
printk(BIOS_SPEW, "%s %s segment group %d bus %d link: %d done\n",
dev_path(bus->dev), __func__, bus->segment_group, bus->secondary, bus->link_num);
printk(BIOS_SPEW, "%s %s segment group %d bus %d done\n",
dev_path(bus->dev), __func__, bus->segment_group, bus->secondary);
}
struct device *vga_pri = NULL;
@@ -301,8 +299,8 @@ void assign_resources(struct bus *bus)
{
struct device *curdev;
printk(BIOS_SPEW, "%s %s, segment group %d bus %d link: %d\n",
dev_path(bus->dev), __func__, bus->segment_group, bus->secondary, bus->link_num);
printk(BIOS_SPEW, "%s %s, segment group %d bus %d\n",
dev_path(bus->dev), __func__, bus->segment_group, bus->secondary);
for (curdev = bus->children; curdev; curdev = curdev->sibling) {
if (!curdev->enabled || !curdev->resource_list)
@@ -317,8 +315,8 @@ void assign_resources(struct bus *bus)
curdev->ops->set_resources(curdev);
}
post_log_clear();
printk(BIOS_SPEW, "%s %s, segment group %d bus %d link: %d done\n",
dev_path(bus->dev), __func__, bus->segment_group, bus->secondary, bus->link_num);
printk(BIOS_SPEW, "%s %s, segment group %d bus %d done\n",
dev_path(bus->dev), __func__, bus->segment_group, bus->secondary);
}
/**
@@ -336,7 +334,6 @@ void assign_resources(struct bus *bus)
static void enable_resources(struct bus *link)
{
struct device *dev;
struct bus *c_link;
for (dev = link->children; dev; dev = dev->sibling) {
if (dev->enabled && dev->ops && dev->ops->enable_resources) {
@@ -346,8 +343,8 @@ static void enable_resources(struct bus *link)
}
for (dev = link->children; dev; dev = dev->sibling) {
for (c_link = dev->link_list; c_link; c_link = c_link->next)
enable_resources(c_link);
if (dev->link_list)
enable_resources(dev->link_list);
}
post_log_clear();
}
@@ -394,17 +391,15 @@ static void scan_bus(struct device *busdev)
do_scan_bus = 1;
while (do_scan_bus) {
struct bus *link;
struct bus *link = busdev->link_list;
busdev->ops->scan_bus(busdev);
do_scan_bus = 0;
for (link = busdev->link_list; link; link = link->next) {
if (link->reset_needed) {
if (reset_bus(link))
do_scan_bus = 1;
else
busdev->bus->reset_needed = 1;
}
}
if (!link || !link->reset_needed)
continue;
if (reset_bus(link))
do_scan_bus = 1;
else
busdev->bus->reset_needed = 1;
}
scan_time = stopwatch_duration_msecs(&sw);
@@ -523,13 +518,11 @@ void dev_configure(void)
*/
void dev_enable(void)
{
struct bus *link;
printk(BIOS_INFO, "Enabling resources...\n");
/* Now enable everything. */
for (link = dev_root.link_list; link; link = link->next)
enable_resources(link);
if (dev_root.link_list)
enable_resources(dev_root.link_list);
printk(BIOS_INFO, "done.\n");
}
@@ -553,8 +546,7 @@ static void init_dev(struct device *dev)
long init_time;
if (dev->path.type == DEVICE_PATH_I2C) {
printk(BIOS_DEBUG, "smbus: %s[%d]->",
dev_path(dev->bus->dev), dev->bus->link_num);
printk(BIOS_DEBUG, "smbus: %s->", dev_path(dev->bus->dev));
}
printk(BIOS_DEBUG, "%s init\n", dev_path(dev));
@@ -572,7 +564,6 @@ static void init_dev(struct device *dev)
static void init_link(struct bus *link)
{
struct device *dev;
struct bus *c_link;
for (dev = link->children; dev; dev = dev->sibling) {
post_code(POSTCODE_BS_DEV_INIT);
@@ -580,10 +571,9 @@ static void init_link(struct bus *link)
init_dev(dev);
}
for (dev = link->children; dev; dev = dev->sibling) {
for (c_link = dev->link_list; c_link; c_link = c_link->next)
init_link(c_link);
}
for (dev = link->children; dev; dev = dev->sibling)
if (dev->link_list)
init_link(dev->link_list);
}
/**
@@ -594,16 +584,14 @@ static void init_link(struct bus *link)
*/
void dev_initialize(void)
{
struct bus *link;
printk(BIOS_INFO, "Initializing devices...\n");
/* First call the mainboard init. */
init_dev(&dev_root);
/* Now initialize everything. */
for (link = dev_root.link_list; link; link = link->next)
init_link(link);
if (dev_root.link_list)
init_link(dev_root.link_list);
post_log_clear();
printk(BIOS_INFO, "Devices initialized\n");
@@ -633,15 +621,13 @@ static void final_dev(struct device *dev)
static void final_link(struct bus *link)
{
struct device *dev;
struct bus *c_link;
for (dev = link->children; dev; dev = dev->sibling)
final_dev(dev);
for (dev = link->children; dev; dev = dev->sibling) {
for (c_link = dev->link_list; c_link; c_link = c_link->next)
final_link(c_link);
}
for (dev = link->children; dev; dev = dev->sibling)
if (dev->link_list)
final_link(dev->link_list);
}
/**
* Finalize all devices in the global device tree.
@@ -651,16 +637,13 @@ static void final_link(struct bus *link)
*/
void dev_finalize(void)
{
struct bus *link;
printk(BIOS_INFO, "Finalize devices...\n");
/* First call the mainboard finalize. */
final_dev(&dev_root);
/* Now finalize everything. */
for (link = dev_root.link_list; link; link = link->next)
final_link(link);
final_link(dev_root.link_list);
printk(BIOS_INFO, "Devices finalized\n");
}

100
src/device/device_util.c
View File

@@ -560,16 +560,9 @@ void search_bus_resources(struct bus *bus, unsigned long type_mask,
/* If it is a subtractive resource recurse. */
if (res->flags & IORESOURCE_SUBTRACTIVE) {
struct bus *subbus;
for (subbus = curdev->link_list; subbus;
subbus = subbus->next)
if (subbus->link_num
== IOINDEX_SUBTRACTIVE_LINK(res->index))
break;
if (!subbus) /* Why can subbus be NULL? */
break;
search_bus_resources(subbus, type_mask, type,
search, gp);
if (curdev->link_list)
search_bus_resources(curdev->link_list, type_mask, type,
search, gp);
continue;
}
search(gp, curdev, res);
@@ -624,9 +617,8 @@ void disable_children(struct bus *bus)
struct device *child;
for (child = bus->children; child; child = child->sibling) {
struct bus *link;
for (link = child->link_list; link; link = link->next)
disable_children(link);
if (child->link_list)
disable_children(child->link_list);
dev_set_enabled(child, 0);
}
}
@@ -637,7 +629,6 @@ void disable_children(struct bus *bus)
*/
bool dev_is_active_bridge(struct device *dev)
{
struct bus *link;
struct device *child;
if (!dev || !dev->enabled)
@@ -646,71 +637,20 @@ bool dev_is_active_bridge(struct device *dev)
if (!dev->link_list || !dev->link_list->children)
return 0;
for (link = dev->link_list; link; link = link->next) {
for (child = link->children; child; child = child->sibling) {
if (child->path.type == DEVICE_PATH_NONE)
continue;
if (child->enabled)
return 1;
}
for (child = dev->link_list->children; child; child = child->sibling) {
if (child->path.type == DEVICE_PATH_NONE)
continue;
if (child->enabled)
return 1;
}
return 0;
}
/**
* Ensure the device has a minimum number of bus links.
*
* @param dev The device to add links to.
* @param total_links The minimum number of links to have.
*/
void add_more_links(struct device *dev, unsigned int total_links)
{
struct bus *link, *last = NULL;
int link_num = -1;
for (link = dev->link_list; link; link = link->next) {
if (link_num < link->link_num)
link_num = link->link_num;
last = link;
}
if (last) {
int links = total_links - (link_num + 1);
if (links > 0) {
link = malloc(links * sizeof(*link));
if (!link)
die("Couldn't allocate more links!\n");
memset(link, 0, links * sizeof(*link));
last->next = link;
} else {
/* No more links to add */
return;
}
} else {
link = malloc(total_links * sizeof(*link));
if (!link)
die("Couldn't allocate more links!\n");
memset(link, 0, total_links * sizeof(*link));
dev->link_list = link;
}
for (link_num = link_num + 1; link_num < total_links; link_num++) {
link->link_num = link_num;
link->dev = dev;
link->next = link + 1;
last = link;
link = link->next;
}
last->next = NULL;
}
static void resource_tree(const struct device *root, int debug_level, int depth)
{
int i = 0;
struct device *child;
struct bus *link;
struct resource *res;
char indent[30]; /* If your tree has more levels, it's wrong. */
@@ -732,10 +672,11 @@ static void resource_tree(const struct device *root, int debug_level, int depth)
res->index);
}
for (link = root->link_list; link; link = link->next) {
for (child = link->children; child; child = child->sibling)
resource_tree(child, debug_level, depth + 1);
}
if (!root->link_list)
return;
for (child = root->link_list->children; child; child = child->sibling)
resource_tree(child, debug_level, depth + 1);
}
void print_resource_tree(const struct device *root, int debug_level,
@@ -760,7 +701,6 @@ void show_devs_tree(const struct device *dev, int debug_level, int depth)
char depth_str[20];
int i;
struct device *sibling;
struct bus *link;
for (i = 0; i < depth; i++)
depth_str[i] = ' ';
@@ -769,11 +709,11 @@ void show_devs_tree(const struct device *dev, int debug_level, int depth)
printk(debug_level, "%s%s: enabled %d\n",
depth_str, dev_path(dev), dev->enabled);
for (link = dev->link_list; link; link = link->next) {
for (sibling = link->children; sibling;
sibling = sibling->sibling)
show_devs_tree(sibling, debug_level, depth + 1);
}
if (!dev->link_list)
return;
for (sibling = dev->link_list->children; sibling; sibling = sibling->sibling)
show_devs_tree(sibling, debug_level, depth + 1);
}
void show_all_devs_tree(int debug_level, const char *msg)

7
src/device/pci_device.c
View File

@@ -713,16 +713,13 @@ static void pci_set_resource(struct device *dev, struct resource *resource)
void pci_dev_set_resources(struct device *dev)
{
struct resource *res;
struct bus *bus;
u8 line;
for (res = dev->resource_list; res; res = res->next)
pci_set_resource(dev, res);
for (bus = dev->link_list; bus; bus = bus->next) {
if (bus->children)
assign_resources(bus);
}
if (dev->link_list && dev->link_list->children)
assign_resources(dev->link_list);
/* Set a default latency timer. */
pci_write_config8(dev, PCI_LATENCY_TIMER, 0x40);

28
src/device/root_device.c
View File

@@ -38,31 +38,27 @@ void enable_static_device(struct device *dev)
void enable_static_devices(struct device *bus)
{
struct device *child;
struct bus *link;
for (link = bus->link_list; link; link = link->next) {
for (child = link->children; child; child = child->sibling) {
enable_static_device(child);
}
}
if (!bus->link_list)
return;
for (child = bus->link_list->children; child; child = child->sibling)
enable_static_device(child);
}
void scan_generic_bus(struct device *bus)
{
struct device *child;
struct bus *link;
static int bus_max = 0;
printk(BIOS_SPEW, "%s for %s\n", __func__, dev_path(bus));
for (link = bus->link_list; link; link = link->next) {
if (bus->link_list) {
bus->link_list->secondary = ++bus_max;
link->secondary = ++bus_max;
for (child = link->children; child; child = child->sibling) {
for (child = bus->link_list->children; child; child = child->sibling) {
enable_static_device(child);
printk(BIOS_DEBUG, "bus: %s[%d]->", dev_path(child->bus->dev),
child->bus->link_num);
printk(BIOS_DEBUG, "bus: %s->", dev_path(child->bus->dev));
}
}
@@ -86,14 +82,12 @@ void scan_smbus(struct device *bus)
*/
void scan_static_bus(struct device *bus)
{
struct bus *link;
printk(BIOS_SPEW, "%s for %s\n", __func__, dev_path(bus));
enable_static_devices(bus);
for (link = bus->link_list; link; link = link->next)
scan_bridges(link);
if (bus->link_list)
scan_bridges(bus->link_list);
printk(BIOS_SPEW, "%s for %s done\n", __func__, dev_path(bus));
}

7
src/include/device/device.h
View File

@@ -4,11 +4,13 @@
#define DEVICE_H
#include <device/resource.h>
#include <console/console.h>
#include <device/path.h>
#include <device/pci_type.h>
#include <device/resource.h>
#include <smbios.h>
#include <static.h>
#include <stdlib.h>
#include <types.h>
struct fw_config;
@@ -78,10 +80,8 @@ static inline void noop_set_resources(struct device *dev) {}
struct bus {
DEVTREE_CONST struct device *dev; /* This bridge device */
DEVTREE_CONST struct device *children; /* devices behind this bridge */
DEVTREE_CONST struct bus *next; /* The next bridge on this device */
unsigned int bridge_ctrl; /* Bridge control register */
uint16_t bridge_cmd; /* Bridge command register */
unsigned char link_num; /* The index of this link */
uint16_t secondary; /* secondary bus number */
uint16_t subordinate; /* subordinate bus number */
uint16_t max_subordinate; /* max subordinate bus number */
@@ -193,7 +193,6 @@ struct device *dev_get_pci_domain(struct device *dev);
void dev_set_enabled(struct device *dev, int enable);
void disable_children(struct bus *bus);
bool dev_is_active_bridge(struct device *dev);
void add_more_links(struct device *dev, unsigned int total_links);
bool is_dev_enabled(const struct device *const dev);
bool is_devfn_enabled(unsigned int devfn);
bool is_cpu(const struct device *cpu);

7
src/northbridge/amd/pi/00730F01/northbridge.c
View File

@@ -235,7 +235,6 @@ static void add_ivhd_device_entries(struct device *parent, struct device *dev,
unsigned long *current, uint16_t *ivhd_length)
{
struct device *sibling;
struct bus *link;
if (!root_level) {
root_level = malloc(sizeof(int8_t));
@@ -254,11 +253,11 @@ static void add_ivhd_device_entries(struct device *parent, struct device *dev,
}
}
for (link = dev->link_list; link; link = link->next)
for (sibling = link->children; sibling; sibling =
sibling->sibling)
if (dev->link_list) {
for (sibling = dev->link_list->children; sibling; sibling = sibling->sibling)
add_ivhd_device_entries(dev, sibling, depth + 1, depth, root_level,
current, ivhd_length);
}
free(root_level);
}

11
src/soc/amd/common/block/acpi/ivrs.c
View File

@@ -140,7 +140,6 @@ static void add_ivhd_device_entries(struct device *parent, struct device *dev,
unsigned long *current, uint16_t nb_bus)
{
struct device *sibling;
struct bus *link;
if (!root_level)
return;
@@ -155,11 +154,11 @@ static void add_ivhd_device_entries(struct device *parent, struct device *dev,
ivrs_add_device_or_bridge(parent, dev, current);
}
for (link = dev->link_list; link; link = link->next)
for (sibling = link->children; sibling; sibling =
sibling->sibling)
add_ivhd_device_entries(dev, sibling, depth + 1, depth, root_level,
current, nb_bus);
if (!dev->link_list)
return;
for (sibling = dev->link_list->children; sibling; sibling = sibling->sibling)
add_ivhd_device_entries(dev, sibling, depth + 1, depth, root_level, current,
nb_bus);
}
static unsigned long acpi_ivhd_misc(unsigned long current, struct device *dev)

24
src/soc/amd/common/block/lpc/lpc.c
View File

@@ -278,20 +278,20 @@ static void configure_child_espi_windows(struct device *child)
static void lpc_enable_children_resources(struct device *dev)
{
struct bus *link;
struct device *child;
for (link = dev->link_list; link; link = link->next) {
for (child = link->children; child; child = child->sibling) {
if (!child->enabled)
continue;
if (child->path.type != DEVICE_PATH_PNP)
continue;
if (CONFIG(SOC_AMD_COMMON_BLOCK_USE_ESPI))
configure_child_espi_windows(child);
else
configure_child_lpc_windows(dev, child);
}
if (!dev->link_list)
return;
for (child = dev->link_list->children; child; child = child->sibling) {
if (!child->enabled)
continue;
if (child->path.type != DEVICE_PATH_PNP)
continue;
if (CONFIG(SOC_AMD_COMMON_BLOCK_USE_ESPI))
configure_child_espi_windows(child);
else
configure_child_lpc_windows(dev, child);
}
}

20
src/soc/amd/stoneyridge/northbridge.c
View File

@@ -52,16 +52,9 @@ static void read_resources(struct device *dev)
static void create_vga_resource(struct device *dev)
{
struct bus *link;
/* find out which link the VGA card is connected,
* we only deal with the 'first' vga card */
for (link = dev->link_list ; link ; link = link->next)
if (link->bridge_ctrl & PCI_BRIDGE_CTL_VGA)
break;
/* no VGA card installed */
if (link == NULL)
if (!dev->link_list)
return;
if (!(dev->link_list->bridge_ctrl & PCI_BRIDGE_CTL_VGA))
return;
printk(BIOS_DEBUG, "VGA: %s has VGA device\n", dev_path(dev));
@@ -71,14 +64,11 @@ static void create_vga_resource(struct device *dev)
static void set_resources(struct device *dev)
{
struct bus *bus;
/* do we need this? */
create_vga_resource(dev);
for (bus = dev->link_list ; bus ; bus = bus->next)
if (bus->children)
assign_resources(bus);
if (dev->link_list && dev->link_list->children)
assign_resources(dev->link_list);
}
static void northbridge_init(struct device *dev)

10
src/soc/intel/common/block/lpc/lpc.c
View File

@@ -100,13 +100,13 @@ static void pch_lpc_loop_resources(struct device *dev)
*/
static void pch_lpc_set_child_resources(struct device *dev)
{
struct bus *link;
struct device *child;
for (link = dev->link_list; link; link = link->next) {
for (child = link->children; child; child = child->sibling)
pch_lpc_loop_resources(child);
}
if (!dev->link_list)
return;
for (child = dev->link_list->children; child; child = child->sibling)
pch_lpc_loop_resources(child);
}
static void pch_lpc_set_resources(struct device *dev)

11
src/southbridge/amd/pi/hudson/lpc.c
View File

@@ -134,7 +134,6 @@ static void hudson_lpc_set_resources(struct device *dev)
*/
static void hudson_lpc_enable_childrens_resources(struct device *dev)
{
struct bus *link;
u32 reg, reg_x;
int var_num = 0;
u16 reg_var[3];
@@ -171,12 +170,10 @@ static void hudson_lpc_enable_childrens_resources(struct device *dev)
reg_var[1] = pci_read_config16(dev, 0x66);
reg_var[0] = pci_read_config16(dev, 0x64);
for (link = dev->link_list; link; link = link->next) {
struct device *child;
for (child = link->children; child;
child = child->sibling) {
if (child->enabled
&& (child->path.type == DEVICE_PATH_PNP)) {
struct device *child;
if (dev->link_list) {
for (child = dev->link_list->children; child; child = child->sibling) {
if (child->enabled && (child->path.type == DEVICE_PATH_PNP)) {
struct resource *res;
for (res = child->resource_list; res; res = res->next) {
u32 base, end; /* don't need long long */