static void bcm_fb_init(void *arg) { volatile struct bcm_fb_config *fb_config; struct bcmsc_softc *sc; struct fb_info *info; phandle_t node; pcell_t cell; device_t mbox; device_t fbd; int err = 0; sc = arg; fb_config = sc->fb_config; node = ofw_bus_get_node(sc->dev); fb_config->xres = 0; fb_config->yres = 0; fb_config->bpp = 0; fb_config->vxres = 0; fb_config->vyres = 0; fb_config->xoffset = 0; fb_config->yoffset = 0; fb_config->base = 0; fb_config->pitch = 0; fb_config->screen_size = 0; if ((OF_getprop(node, "broadcom,width", &cell, sizeof(cell))) > 0) fb_config->xres = (int)fdt32_to_cpu(cell); if (fb_config->xres == 0) fb_config->xres = FB_WIDTH; if ((OF_getprop(node, "broadcom,height", &cell, sizeof(cell))) > 0) fb_config->yres = (uint32_t)fdt32_to_cpu(cell); if (fb_config->yres == 0) fb_config->yres = FB_HEIGHT; if ((OF_getprop(node, "broadcom,depth", &cell, sizeof(cell))) > 0) fb_config->bpp = (uint32_t)fdt32_to_cpu(cell); if (fb_config->bpp == 0) fb_config->bpp = FB_DEPTH; bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); mbox = devclass_get_device(devclass_find("mbox"), 0); if (mbox) { MBOX_WRITE(mbox, BCM2835_MBOX_CHAN_FB, sc->fb_config_phys); MBOX_READ(mbox, BCM2835_MBOX_CHAN_FB, &err); } bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_POSTREAD); if (fb_config->base != 0) { device_printf(sc->dev, "%dx%d(%dx%d@%d,%d) %dbpp\n", fb_config->xres, fb_config->yres, fb_config->vxres, fb_config->vyres, fb_config->xoffset, fb_config->yoffset, fb_config->bpp); device_printf(sc->dev, "pitch %d, base 0x%08x, screen_size %d\n", fb_config->pitch, fb_config->base, fb_config->screen_size); info = malloc(sizeof(struct fb_info), M_DEVBUF, M_WAITOK | M_ZERO); info->fb_name = device_get_nameunit(sc->dev); info->fb_vbase = (intptr_t)pmap_mapdev(fb_config->base, fb_config->screen_size); info->fb_pbase = fb_config->base; info->fb_size = fb_config->screen_size; info->fb_bpp = info->fb_depth = fb_config->bpp; info->fb_stride = fb_config->pitch; info->fb_width = fb_config->xres; info->fb_height = fb_config->yres; sc->info = info; fbd = device_add_child(sc->dev, "fbd", device_get_unit(sc->dev)); if (fbd == NULL) { device_printf(sc->dev, "Failed to add fbd child\n"); return; } if (device_probe_and_attach(fbd) != 0) { device_printf(sc->dev, "Failed to attach fbd device\n"); return; } } else { device_printf(sc->dev, "Failed to set framebuffer info\n"); return; } config_intrhook_disestablish(&sc->init_hook); }
static int bcm2835_mbox_call_prop(struct bcm2835_cpufreq_softc *sc) { struct bcm2835_mbox_hdr *msg = (struct bcm2835_mbox_hdr *)sc->dma_buf; struct bcm2835_mbox_tag_hdr *tag, *last; uint8_t *up; device_t mbox; size_t hdr_size; int idx; int err; /* * For multiple calls, locking is not here. The caller must have * VC semaphore. */ /* get mbox device */ mbox = devclass_get_device(devclass_find("mbox"), 0); if (mbox == NULL) { device_printf(sc->dev, "can't find mbox\n"); return (-1); } /* go mailbox property */ #ifdef PROP_DEBUG bcm2835_dump(msg, 64); #endif bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); MBOX_WRITE(mbox, BCM2835_MBOX_CHAN_PROP, (uint32_t)sc->dma_phys); MBOX_READ(mbox, BCM2835_MBOX_CHAN_PROP, &err); bus_dmamap_sync(sc->dma_tag, sc->dma_map, BUS_DMASYNC_POSTREAD); #ifdef PROP_DEBUG bcm2835_dump(msg, 64); #endif /* check response code */ if (msg->code != BCM2835_MBOX_CODE_RESP_SUCCESS) { device_printf(sc->dev, "mbox response error\n"); return (-1); } /* tag = first tag */ up = (uint8_t *)msg; hdr_size = sizeof(struct bcm2835_mbox_hdr); tag = (struct bcm2835_mbox_tag_hdr *)(up + hdr_size); /* last = end of buffer specified by header */ last = (struct bcm2835_mbox_tag_hdr *)(up + msg->buf_size); /* loop unitl end tag (=0x0) */ hdr_size = sizeof(struct bcm2835_mbox_tag_hdr); for (idx = 0; tag->tag != 0; idx++) { if ((tag->val_len & BCM2835_MBOX_TAG_VAL_LEN_RESPONSE) == 0) { device_printf(sc->dev, "tag%d response error\n", idx); return (-1); } /* clear response bit */ tag->val_len &= ~BCM2835_MBOX_TAG_VAL_LEN_RESPONSE; /* get next tag */ up = (uint8_t *)tag; tag = (struct bcm2835_mbox_tag_hdr *)(up + hdr_size + tag->val_buf_size); /* check buffer size of header */ if (tag > last) { device_printf(sc->dev, "mbox buffer size error\n"); return (-1); } } return (0); }