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#define _SYSTEM
#include <errno.h>
#include <string.h>
#include <minix/acpi.h>
#include <minix/com.h>
#include <minix/ds.h>
#include <minix/ipc.h>
#include <minix/log.h>
#include <minix/sysutil.h>
static struct log log =
{ .name = "libacpi", .log_level = LEVEL_TRACE, .log_func = default_log };
static endpoint_t acpi_ep = NONE;
int
acpi_init(void)
{
int res;
res = ds_retrieve_label_endpt("acpi", &acpi_ep);
return res;
}
/*===========================================================================*
* IRQ handling *
*===========================================================================*/
int
acpi_get_irq(unsigned bus, unsigned dev, unsigned pin)
{
int err;
message m;
if (acpi_ep == NONE) {
err = acpi_init();
if (OK != err) {
panic("libacpi: ds_retrieve_label_endpt failed for 'acpi': %d", err);
}
else {
log_info(&log, "resolved acpi to endpoint: %d\n", acpi_ep);
}
}
((struct acpi_get_irq_req *)&m)->hdr.request = ACPI_REQ_GET_IRQ;
((struct acpi_get_irq_req *)&m)->bus = bus;
((struct acpi_get_irq_req *)&m)->dev = dev;
((struct acpi_get_irq_req *)&m)->pin = pin;
if ((err = ipc_sendrec(acpi_ep, &m)) != OK)
panic("libacpi: error %d while receiving from ACPI\n", err);
return ((struct acpi_get_irq_resp *)&m)->irq;
}
/*
* tells acpi which two busses are connected by this bridge. The primary bus
* (pbnr) must be already known to acpi and it must map dev as the connection to
* the secondary (sbnr) bus
*/
void
acpi_map_bridge(unsigned int pbnr, unsigned int dev, unsigned int sbnr)
{
int err;
message m;
if (acpi_ep == NONE) {
err = acpi_init();
if (OK != err) {
panic("libacpi: ds_retrieve_label_endpt failed for 'acpi': %d", err);
}
}
((struct acpi_map_bridge_req *)&m)->hdr.request = ACPI_REQ_MAP_BRIDGE;
((struct acpi_map_bridge_req *)&m)->primary_bus = pbnr;
((struct acpi_map_bridge_req *)&m)->secondary_bus = sbnr;
((struct acpi_map_bridge_req *)&m)->device = dev;
if ((err = ipc_sendrec(acpi_ep, &m)) != OK)
panic("libacpi: error %d while receiving from ACPI\n", err);
if (((struct acpi_map_bridge_resp *)&m)->err != OK)
printf("libacpi: acpi failed to map pci (%d) to pci (%d) bridge\n",
pbnr, sbnr);
}
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