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/* $OpenBSD: vldc.c,v 1.1 2012/03/17 20:07:18 kettenis Exp $ */
/*
* Copyright (c) 2009, 2012 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/buf.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <machine/autoconf.h>
#include <machine/hypervisor.h>
#include <machine/mdesc.h>
#include <sparc64/dev/cbusvar.h>
#ifdef VLDC_DEBUG
#define DPRINTF(x) printf x
#else
#define DPRINTF(x)
#endif
struct vldc_softc {
struct device sc_dv;
bus_space_tag_t sc_bustag;
bus_dma_tag_t sc_dmatag;
};
int vldc_match(struct device *, void *, void *);
void vldc_attach(struct device *, struct device *, void *);
struct cfattach vldc_ca = {
sizeof(struct vldc_softc), vldc_match, vldc_attach
};
struct cfdriver vldc_cd = {
NULL, "vldc", DV_DULL
};
void vldc_get_channel_endpoint(int, struct cbus_attach_args *);
int
vldc_match(struct device *parent, void *match, void *aux)
{
struct cbus_attach_args *ca = aux;
if (strcmp(ca->ca_name, "virtual-channel") == 0 ||
strcmp(ca->ca_name, "virtual-channel-client") == 0)
return (1);
return (0);
}
void
vldc_attach(struct device *parent, struct device *self, void *aux)
{
struct cbus_attach_args *ca = aux;
struct cbus_attach_args nca;
struct md_header *hdr;
struct md_element *elem;
const char *name_blk;
const char *str;
int idx;
int arc;
printf("\n");
hdr = (struct md_header *)mdesc;
elem = (struct md_element *)(mdesc + sizeof(struct md_header));
name_blk = mdesc + sizeof(struct md_header) + hdr->node_blk_sz;
idx = ca->ca_idx;
for (; elem[idx].tag != 'E'; idx++) {
str = name_blk + elem[idx].name_offset;
if (elem[idx].tag != 'a' || strcmp(str, "fwd") != 0)
continue;
arc = elem[idx].d.val;
str = name_blk + elem[arc].name_offset;
if (strcmp(str, "virtual-device-port") == 0) {
str = mdesc_get_prop_str(arc, "vldc-svc-name");
if (str) {
bzero(&nca, sizeof(nca));
nca.ca_name = str;
nca.ca_node = ca->ca_node;
nca.ca_bustag = ca->ca_bustag;
nca.ca_dmatag = ca->ca_dmatag;
vldc_get_channel_endpoint(arc, &nca);
config_found(self, &nca, cbus_print);
}
}
}
}
void
vldc_get_channel_endpoint(int idx, struct cbus_attach_args *ca)
{
struct md_header *hdr;
struct md_element *elem;
const char *name_blk;
const char *str;
int arc;
hdr = (struct md_header *)mdesc;
elem = (struct md_element *)(mdesc + sizeof(struct md_header));
name_blk = mdesc + sizeof(struct md_header) + hdr->node_blk_sz;
ca->ca_idx = idx;
ca->ca_id = -1;
ca->ca_tx_ino = -1;
ca->ca_rx_ino = -1;
for (; elem[idx].tag != 'E'; idx++) {
str = name_blk + elem[idx].name_offset;
if (elem[idx].tag != 'a' || strcmp(str, "fwd") != 0)
continue;
arc = elem[idx].d.val;
str = name_blk + elem[arc].name_offset;
if (strcmp(str, "channel-endpoint") == 0) {
ca->ca_id = mdesc_get_prop_val(arc, "id");
ca->ca_tx_ino = mdesc_get_prop_val(arc, "tx-ino");
ca->ca_rx_ino = mdesc_get_prop_val(arc, "rx-ino");
return;
}
}
}
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