/* $OpenBSD: vcc.c,v 1.2 2021/10/24 17:05:04 mpi Exp $ */ /* * Copyright (c) 2009 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 #include #include #include #include #include #include #include #include #ifdef VCC_DEBUG #define DPRINTF(x) printf x #else #define DPRINTF(x) #endif struct vcc_softc { struct device sc_dv; bus_space_tag_t sc_bustag; bus_dma_tag_t sc_dmatag; }; int vcc_match(struct device *, void *, void *); void vcc_attach(struct device *, struct device *, void *); const struct cfattach vcc_ca = { sizeof(struct vcc_softc), vcc_match, vcc_attach }; struct cfdriver vcc_cd = { NULL, "vcc", DV_DULL }; void vcc_get_channel_endpoint(int, struct cbus_attach_args *); int vcc_match(struct device *parent, void *match, void *aux) { struct cbus_attach_args *ca = aux; if (strcmp(ca->ca_name, "virtual-console-concentrator") == 0) return (1); return (0); } void vcc_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, "vcc-domain-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; vcc_get_channel_endpoint(arc, &nca); config_found(self, &nca, cbus_print); } } } } void vcc_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; } } }