1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
43 #include <arm/broadcom/bcm2835/bcm2835_firmware.h>
44 #include <arm/broadcom/bcm2835/bcm2835_mbox.h>
45 #include <arm/broadcom/bcm2835/bcm2835_mbox_prop.h>
46 #include <arm/broadcom/bcm2835/bcm2835_vcbus.h>
65 	mtx_lock(&(sc)->lock);	\
69 	mtx_unlock(&(sc)->lock);	\
91     bus_space_read_4((sc)->bst, (sc)->bsh, reg)
93     bus_space_write_4((sc)->bst, (sc)->bsh, reg, val)
96 	{"broadcom,bcm2835-mbox",	1},
97 	{"brcm,bcm2835-mbox",		1},
116 	if (sc->msg[chan]) {  in bcm_mbox_read_msg()
121 	sc->msg[chan] = msg;  in bcm_mbox_read_msg()
138 			sc->have_message[chan] = 1;  in bcm_mbox_intr()
139 			wakeup(&sc->have_message[chan]);  in bcm_mbox_intr()
151 	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)  in bcm_mbox_probe()
154 	device_set_desc(dev, "BCM2835 VideoCore Mailbox");  in bcm_mbox_probe()
166 	sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);  in bcm_mbox_attach()
167 	if (sc->mem_res == NULL) {  in bcm_mbox_attach()
172 	sc->bst = rman_get_bustag(sc->mem_res);  in bcm_mbox_attach()
173 	sc->bsh = rman_get_bushandle(sc->mem_res);  in bcm_mbox_attach()
176 	sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);  in bcm_mbox_attach()
177 	if (sc->irq_res == NULL) {  in bcm_mbox_attach()
183 	if (bus_setup_intr(dev, sc->irq_res, INTR_MPSAFE | INTR_TYPE_MISC,   in bcm_mbox_attach()
184 	    NULL, bcm_mbox_intr, sc, &sc->intr_hl) != 0) {  in bcm_mbox_attach()
185 		bus_release_resource(dev, SYS_RES_IRQ, rid, sc->irq_res);  in bcm_mbox_attach()
190 	mtx_init(&sc->lock, "vcio mbox", NULL, MTX_DEF);  in bcm_mbox_attach()
192 		sc->msg[i] = 0;  in bcm_mbox_attach()
193 		sc->have_message[i] = 0;  in bcm_mbox_attach()
196 	sx_init(&sc->property_chan_lock, "mboxprop");  in bcm_mbox_attach()
218 	sc->have_message[chan] = 0;  in bcm_mbox_write()
219 	while ((mbox_read_4(sc, REG_STATUS) & STATUS_FULL) && --limit)  in bcm_mbox_write()
243 		if (sc->have_message[chan] == 0) {  in bcm_mbox_read()
244 			if (mtx_sleep(&sc->have_message[chan], &sc->lock, 0,  in bcm_mbox_read()
266 	*data = MBOX_DATA(sc->msg[chan]);  in bcm_mbox_read()
267 	sc->msg[chan] = 0;  in bcm_mbox_read()
268 	sc->have_message[chan] = 0;  in bcm_mbox_read()
352 	if (msg->code != BCM2835_MBOX_CODE_RESP_SUCCESS) {  in bcm2835_mbox_err()
360 	for (idx = 0; tag->tag != 0; idx++) {  in bcm2835_mbox_err()
362 		 * When setting the GPIO config or state the firmware doesn't  in bcm2835_mbox_err()
363 		 * set tag->val_len correctly.  in bcm2835_mbox_err()
365 		if ((tag->tag == BCM2835_FIRMWARE_TAG_SET_GPIO_CONFIG ||  in bcm2835_mbox_err()
366 		     tag->tag == BCM2835_FIRMWARE_TAG_SET_GPIO_STATE) &&  in bcm2835_mbox_err()
367 		    tag->val_len == 0) {  in bcm2835_mbox_err()
368 			tag->val_len = BCM2835_MBOX_TAG_VAL_LEN_RESPONSE |  in bcm2835_mbox_err()
369 			    tag->val_buf_size;  in bcm2835_mbox_err()
371 		if ((tag->val_len & BCM2835_MBOX_TAG_VAL_LEN_RESPONSE) == 0) {  in bcm2835_mbox_err()
376 		tag->val_len &= ~BCM2835_MBOX_TAG_VAL_LEN_RESPONSE;  in bcm2835_mbox_err()
380 		    sizeof(*tag) + tag->val_buf_size);  in bcm2835_mbox_err()
409 	sx_xlock(&sc->property_chan_lock);  in bcm2835_mbox_property()
439 	sx_xunlock(&sc->property_chan_lock);  in bcm2835_mbox_property()
521 		fb->xres = msg.physical_w_h.body.resp.width;  in bcm2835_mbox_fb_get_w_h()
522 		fb->yres = msg.physical_w_h.body.resp.height;  in bcm2835_mbox_fb_get_w_h()
543 		fb->bpp = msg.bpp.body.resp.bpp;  in bcm2835_mbox_fb_get_bpp()
558 	msg.physical_w_h.body.req.width = fb->xres;  in bcm2835_mbox_fb_init()
559 	msg.physical_w_h.body.req.height = fb->yres;  in bcm2835_mbox_fb_init()
561 	msg.virtual_w_h.body.req.width = fb->vxres;  in bcm2835_mbox_fb_init()
562 	msg.virtual_w_h.body.req.height = fb->vyres;  in bcm2835_mbox_fb_init()
564 	msg.offset.body.req.x = fb->xoffset;  in bcm2835_mbox_fb_init()
565 	msg.offset.body.req.y = fb->yoffset;  in bcm2835_mbox_fb_init()
567 	msg.depth.body.req.bpp = fb->bpp;  in bcm2835_mbox_fb_init()
577 		fb->xres = msg.physical_w_h.body.resp.width;  in bcm2835_mbox_fb_init()
578 		fb->yres = msg.physical_w_h.body.resp.height;  in bcm2835_mbox_fb_init()
579 		fb->vxres = msg.virtual_w_h.body.resp.width;  in bcm2835_mbox_fb_init()
580 		fb->vyres = msg.virtual_w_h.body.resp.height;  in bcm2835_mbox_fb_init()
581 		fb->xoffset = msg.offset.body.resp.x;  in bcm2835_mbox_fb_init()
582 		fb->yoffset = msg.offset.body.resp.y;  in bcm2835_mbox_fb_init()
583 		fb->pitch = msg.pitch.body.resp.pitch;  in bcm2835_mbox_fb_init()
584 		fb->base = VCBUS_TO_ARMC(msg.buffer.body.resp.fb_address);  in bcm2835_mbox_fb_init()
585 		fb->size = msg.buffer.body.resp.fb_size;  in bcm2835_mbox_fb_init()