* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
* Copyright (C) 2002 Dominik Brodowski <devel@brodo.de>
+ * (c) Copyright 2008 Hewlett-Packard Development Company, L.P.
+ * Bjorn Helgaas <bjorn.helgaas@hp.com>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
+#define PREFIX "ACPI: "
+
#define _COMPONENT ACPI_PCI_COMPONENT
ACPI_MODULE_NAME("pci_irq");
struct list_head list;
struct acpi_pci_id id;
u8 pin;
- struct {
- acpi_handle handle;
- u32 index;
- } link;
- u32 irq;
+ acpi_handle link;
+ u32 index; /* GSI, or link _CRS index */
};
static LIST_HEAD(acpi_prt_list);
}
/* http://bugzilla.kernel.org/show_bug.cgi?id=4773 */
-static struct dmi_system_id medion_md9580[] = {
+static const struct dmi_system_id medion_md9580[] = {
{
.ident = "Medion MD9580-F laptop",
.matches = {
};
/* http://bugzilla.kernel.org/show_bug.cgi?id=5044 */
-static struct dmi_system_id dell_optiplex[] = {
+static const struct dmi_system_id dell_optiplex[] = {
{
.ident = "Dell Optiplex GX1",
.matches = {
};
/* http://bugzilla.kernel.org/show_bug.cgi?id=10138 */
-static struct dmi_system_id hp_t5710[] = {
+static const struct dmi_system_id hp_t5710[] = {
{
.ident = "HP t5710",
.matches = {
};
struct prt_quirk {
- struct dmi_system_id *system;
+ const struct dmi_system_id *system;
unsigned int segment;
unsigned int bus;
unsigned int device;
unsigned char pin;
- char *source; /* according to BIOS */
- char *actual_source;
+ const char *source; /* according to BIOS */
+ const char *actual_source;
};
#define PCI_INTX_PIN(c) (c - 'A' + 1)
* interrupt at the listed segment/bus/device/pin is connected to the first
* link device, but it is actually connected to the second.
*/
-static struct prt_quirk prt_quirks[] = {
+static const struct prt_quirk prt_quirks[] = {
{ medion_md9580, 0, 0, 9, PCI_INTX_PIN('A'),
"\\_SB_.PCI0.ISA_.LNKA",
"\\_SB_.PCI0.ISA_.LNKB"},
"\\_SB_.PCI0.LNK3"},
};
-static void
-do_prt_fixups(struct acpi_prt_entry *entry, struct acpi_pci_routing_table *prt)
+static void do_prt_fixups(struct acpi_prt_entry *entry,
+ struct acpi_pci_routing_table *prt)
{
int i;
- struct prt_quirk *quirk;
+ const struct prt_quirk *quirk;
for (i = 0; i < ARRAY_SIZE(prt_quirks); i++) {
quirk = &prt_quirks[i];
}
}
-static int
-acpi_pci_irq_add_entry(acpi_handle handle,
- int segment, int bus, struct acpi_pci_routing_table *prt)
+static int acpi_pci_irq_add_entry(acpi_handle handle, struct pci_bus *bus,
+ struct acpi_pci_routing_table *prt)
{
struct acpi_prt_entry *entry;
* 1=INTA, 2=INTB. We use the PCI encoding throughout, so convert
* it here.
*/
- entry->id.segment = segment;
- entry->id.bus = bus;
+ entry->id.segment = pci_domain_nr(bus);
+ entry->id.bus = bus->number;
entry->id.device = (prt->address >> 16) & 0xFFFF;
entry->pin = prt->pin + 1;
do_prt_fixups(entry, prt);
+ entry->index = prt->source_index;
+
/*
* Type 1: Dynamic
* ---------------
* (e.g. exists somewhere 'below' this _PRT entry in the ACPI
* namespace).
*/
- if (prt->source[0]) {
- acpi_get_handle(handle, prt->source, &entry->link.handle);
- entry->link.index = prt->source_index;
- }
+ if (prt->source[0])
+ acpi_get_handle(handle, prt->source, &entry->link);
+
/*
* Type 2: Static
* --------------
* the IRQ value, which is hardwired to specific interrupt inputs on
* the interrupt controller.
*/
- else
- entry->link.index = prt->source_index;
ACPI_DEBUG_PRINT_RAW((ACPI_DB_INFO,
" %04x:%02x:%02x[%c] -> %s[%d]\n",
entry->id.segment, entry->id.bus,
entry->id.device, pin_name(entry->pin),
- prt->source, entry->link.index));
+ prt->source, entry->index));
spin_lock(&acpi_prt_lock);
list_add_tail(&entry->list, &acpi_prt_list);
return 0;
}
-int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
+int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus)
{
acpi_status status;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
entry = buffer.pointer;
while (entry && (entry->length > 0)) {
- acpi_pci_irq_add_entry(handle, segment, bus, entry);
+ acpi_pci_irq_add_entry(handle, bus, entry);
entry = (struct acpi_pci_routing_table *)
((unsigned long)entry + entry->length);
}
return 0;
}
-void acpi_pci_irq_del_prt(int segment, int bus)
+void acpi_pci_irq_del_prt(struct pci_bus *bus)
{
struct acpi_prt_entry *entry, *tmp;
printk(KERN_DEBUG
"ACPI: Delete PCI Interrupt Routing Table for %04x:%02x\n",
- segment, bus);
+ pci_domain_nr(bus), bus->number);
spin_lock(&acpi_prt_lock);
list_for_each_entry_safe(entry, tmp, &acpi_prt_list, list) {
- if (segment == entry->id.segment && bus == entry->id.bus) {
+ if (pci_domain_nr(bus) == entry->id.segment
+ && bus->number == entry->id.bus) {
list_del(&entry->list);
kfree(entry);
}
/* --------------------------------------------------------------------------
PCI Interrupt Routing Support
-------------------------------------------------------------------------- */
-static int
-acpi_pci_allocate_irq(struct acpi_prt_entry *entry,
- int *triggering, int *polarity, char **link)
-{
- int irq;
-
-
- if (entry->link.handle) {
- irq = acpi_pci_link_allocate_irq(entry->link.handle,
- entry->link.index, triggering,
- polarity, link);
- if (irq < 0) {
- printk(KERN_WARNING PREFIX
- "Invalid IRQ link routing entry\n");
- return -1;
- }
- } else {
- irq = entry->link.index;
- *triggering = ACPI_LEVEL_SENSITIVE;
- *polarity = ACPI_ACTIVE_LOW;
- }
-
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found GSI %d\n", irq));
- return irq;
-}
-
-static int
-acpi_pci_free_irq(struct acpi_prt_entry *entry)
-{
- int irq;
-
- if (entry->link.handle) {
- irq = acpi_pci_link_free_irq(entry->link.handle);
- } else {
- irq = entry->link.index;
- }
- return irq;
-}
-
-static struct acpi_prt_entry *
-acpi_pci_irq_lookup(struct pci_dev *dev, int pin)
+static struct acpi_prt_entry *acpi_pci_irq_lookup(struct pci_dev *dev, int pin)
{
struct acpi_prt_entry *entry;
struct pci_dev *bridge;
*/
bridge = dev->bus->self;
while (bridge) {
- pin = (((pin - 1) + PCI_SLOT(dev->devfn)) % 4) + 1;
+ pin = pci_swizzle_interrupt_pin(dev, pin);
if ((bridge->class >> 8) == PCI_CLASS_BRIDGE_CARDBUS) {
/* PC card has the same IRQ as its cardbridge */
return NULL;
}
-/*
- * acpi_pci_irq_enable
- * success: return 0
- * failure: return < 0
- */
-
int acpi_pci_irq_enable(struct pci_dev *dev)
{
struct acpi_prt_entry *entry;
- int gsi = 0;
- u8 pin = 0;
+ int gsi;
+ u8 pin;
int triggering = ACPI_LEVEL_SENSITIVE;
int polarity = ACPI_ACTIVE_LOW;
char *link = NULL;
char link_desc[16];
int rc;
-
pin = dev->pin;
if (!pin) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
return 0;
}
- if (entry)
- gsi = acpi_pci_allocate_irq(entry, &triggering, &polarity,
- &link);
- else
+ if (entry) {
+ if (entry->link)
+ gsi = acpi_pci_link_allocate_irq(entry->link,
+ entry->index,
+ &triggering, &polarity,
+ &link);
+ else
+ gsi = entry->index;
+ } else
gsi = -1;
/*
/* Interrupt Line values above 0xF are forbidden */
if (dev->irq > 0 && (dev->irq <= 0xF)) {
printk(" - using IRQ %d\n", dev->irq);
- acpi_register_gsi(dev->irq, ACPI_LEVEL_SENSITIVE,
+ acpi_register_gsi(&dev->dev, dev->irq,
+ ACPI_LEVEL_SENSITIVE,
ACPI_ACTIVE_LOW);
return 0;
} else {
}
}
- rc = acpi_register_gsi(gsi, triggering, polarity);
+ rc = acpi_register_gsi(&dev->dev, gsi, triggering, polarity);
if (rc < 0) {
dev_warn(&dev->dev, "PCI INT %c: failed to register GSI\n",
pin_name(pin));
void acpi_pci_irq_disable(struct pci_dev *dev)
{
struct acpi_prt_entry *entry;
- int gsi = 0;
- u8 pin = 0;
-
+ int gsi;
+ u8 pin;
pin = dev->pin;
if (!pin)
if (!entry)
return;
- gsi = acpi_pci_free_irq(entry);
+ if (entry->link)
+ gsi = acpi_pci_link_free_irq(entry->link);
+ else
+ gsi = entry->index;
/*
* TBD: It might be worth clearing dev->irq by magic constant
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff