1 /*-
54  * boundaries, but ERASE is only at flash-block-size block alignments and sizes.
57  * - Reads are on a 512-byte block boundary and size
58  * - Writes and Erases are aligned and sized on flash-block-size bytes.
70 	bool			 sc_erase; /* Erase is needed before write. */
73 #define	OPALFLASH_LOCK(sc)		mtx_lock(&(sc)->sc_mtx)
74 #define	OPALFLASH_UNLOCK(sc)		mtx_unlock(&(sc)->sc_mtx)
76 	mtx_init(&(sc)->sc_mtx, device_get_nameunit((sc)->sc_dev), \
130 	if (bp->bio_disk == NULL || bp->bio_disk->d_drv1 == NULL)  in opalflash_getattr()
133 	sc = bp->bio_disk->d_drv1;  in opalflash_getattr()
134 	dev = sc->sc_dev;  in opalflash_getattr()
136 	if (strcmp(bp->bio_attribute, "NAND::device") == 0) {  in opalflash_getattr()
137 		if (bp->bio_length != sizeof(dev))  in opalflash_getattr()
139 		bcopy(&dev, bp->bio_data, sizeof(dev));  in opalflash_getattr()
141 		return (-1);  in opalflash_getattr()
150 	sc = (struct opalflash_softc *)bp->bio_disk->d_drv1;  in opalflash_strategy()
152 	bioq_disksort(&sc->sc_bio_queue, bp);  in opalflash_strategy()
162 	int rv, size, token;  in opalflash_read()  local
164 	/* Ensure we write aligned to a full block size. */  in opalflash_read()
165 	if (off % sc->sc_disk->d_sectorsize != 0 ||  in opalflash_read()
166 	    count % sc->sc_disk->d_sectorsize != 0)  in opalflash_read()
177 		size = MIN(count, PAGE_SIZE);  in opalflash_read()
178 		size = MIN(size, PAGE_SIZE - ((u_long)data & PAGE_MASK));  in opalflash_read()
179 		rv = opal_call(OPAL_FLASH_READ, sc->sc_opal_id, off,  in opalflash_read()
180 		    vtophys(data), size, token);  in opalflash_read()
188 		count -= size;  in opalflash_read()
189 		off += size;  in opalflash_read()
190 		data += size;  in opalflash_read()
207 	/* Ensure we write aligned to a full block size. */  in opalflash_erase()
208 	if (off % sc->sc_disk->d_stripesize != 0 ||  in opalflash_erase()
209 	    count % sc->sc_disk->d_stripesize != 0)  in opalflash_erase()
214 	rv = opal_call(OPAL_FLASH_ERASE, sc->sc_opal_id, off, count, token);  in opalflash_erase()
235 	int rv, size, token;  in opalflash_write()  local
237 	/* Ensure we write aligned to a full block size. */  in opalflash_write()
238 	if (off % sc->sc_disk->d_sectorsize != 0 ||  in opalflash_write()
239 	    count % sc->sc_disk->d_sectorsize != 0)  in opalflash_write()
242 	if (sc->sc_erase) {  in opalflash_write()
243 	    /* Erase the full block first, then write in page chunks. */  in opalflash_write()
256 		size = MIN(count, PAGE_SIZE);  in opalflash_write()
257 		size = MIN(size, PAGE_SIZE - ((u_long)data & PAGE_MASK));  in opalflash_write()
258 		rv = opal_call(OPAL_FLASH_WRITE, sc->sc_opal_id, off,  in opalflash_write()
259 		    vtophys(data), size, token);  in opalflash_write()
267 		count -= size;  in opalflash_write()
268 		off += size;  in opalflash_write()
269 		data += size;  in opalflash_write()
293 			bp = bioq_first(&sc->sc_bio_queue);  in opalflash_task()
295 				msleep(sc, &sc->sc_mtx, PRIBIO, "opalflash", 0);  in opalflash_task()
297 		bioq_remove(&sc->sc_bio_queue, bp);  in opalflash_task()
300 		switch (bp->bio_cmd) {  in opalflash_task()
302 			bp->bio_error = opalflash_erase(sc, bp->bio_offset,  in opalflash_task()
303 			    bp->bio_bcount);  in opalflash_task()
306 			bp->bio_error = opalflash_read(sc, bp->bio_offset,  in opalflash_task()
307 			    bp->bio_data, bp->bio_bcount);  in opalflash_task()
310 			bp->bio_error = opalflash_write(sc, bp->bio_offset,  in opalflash_task()
311 			    bp->bio_data, bp->bio_bcount);  in opalflash_task()
314 			bp->bio_error = EINVAL;  in opalflash_task()
325 	if (!ofw_bus_is_compatible(dev, "ibm,opal-flash"))  in opalflash_probe()
342 	sc->sc_dev = dev;  in opalflash_attach()
345 	OF_getencprop(node, "ibm,opal-id", &opal_id, sizeof(opal_id));  in opalflash_attach()
346 	sc->sc_opal_id = opal_id;  in opalflash_attach()
348 	if (OF_getencprop(node, "ibm,flash-block-size",  in opalflash_attach()
350 		device_printf(dev, "Cannot determine flash block size.\n");  in opalflash_attach()
354 	if (!OF_hasprop(node, "no-erase"))  in opalflash_attach()
355 		sc->sc_erase = true;  in opalflash_attach()
360 		device_printf(dev, "Unable to get flash size.\n");  in opalflash_attach()
364 	sc->sc_disk = disk_alloc();  in opalflash_attach()
365 	sc->sc_disk->d_name = "opalflash";  in opalflash_attach()
366 	sc->sc_disk->d_open = opalflash_open;  in opalflash_attach()
367 	sc->sc_disk->d_close = opalflash_close;  in opalflash_attach()
368 	sc->sc_disk->d_strategy = opalflash_strategy;  in opalflash_attach()
369 	sc->sc_disk->d_ioctl = opalflash_ioctl;  in opalflash_attach()
370 	sc->sc_disk->d_getattr = opalflash_getattr;  in opalflash_attach()
371 	sc->sc_disk->d_drv1 = sc;  in opalflash_attach()
372 	sc->sc_disk->d_maxsize = DFLTPHYS;  in opalflash_attach()
373 	sc->sc_disk->d_mediasize = regs[1];  in opalflash_attach()
374 	sc->sc_disk->d_unit = device_get_unit(sc->sc_dev);  in opalflash_attach()
375 	sc->sc_disk->d_sectorsize = FLASH_BLOCKSIZE;  in opalflash_attach()
376 	    sc->sc_disk->d_stripesize = flash_blocksize;  in opalflash_attach()
377 	sc->sc_disk->d_dump = NULL;  in opalflash_attach()
379 	disk_create(sc->sc_disk, DISK_VERSION);  in opalflash_attach()
380 	bioq_init(&sc->sc_bio_queue);  in opalflash_attach()
382 	kproc_create(&opalflash_task, sc, &sc->sc_p, 0, 0, "task: OPAL Flash");  in opalflash_attach()