217 flashread(Chan *c, void *buf, long n, vlong offset)  in flashread()  argument
235 		offset += fp->start;  in flashread()
236 		if(offset >= fp->end)  in flashread()
238 		if(offset+n > fp->end)  in flashread()
239 			n = fp->end - offset;  in flashread()
240 		n = readflash(f, buf, offset, n);  in flashread()
271 		n = readstr(offset, buf, n, s);  in flashread()
297 flashwrite(Chan *c, void *buf, long n, vlong offset)  in flashwrite()  argument
315 		offset += fp->start;  in flashwrite()
316 		if(offset >= fp->end)  in flashwrite()
318 		if(offset+n > fp->end)  in flashwrite()
319 			n = fp->end - offset;  in flashwrite()
320 		n = writeflash(f, offset, buf, n);  in flashwrite()
494 readflash(Flash *f, void *buf, long offset, int n)  in readflash()  argument
501 	if(offset < 0 || offset+n > f->size)  in readflash()
512 		if(offset & wmask) {  in readflash()
513 			o = offset & ~wmask;  in readflash()
517 			for(; n > 0 && offset & wmask; n--)  in readflash()
518 				*p++ = tmp[offset++ & wmask];  in readflash()
523 			if(f->read(f, offset, (ulong*)p, n) < 0)  in readflash()
525 			offset += n;  in readflash()
529 			if(f->read(f, offset, (ulong*)tmp, width))  in readflash()
535 		memmove(buf, (uchar*)f->addr+offset, n);  in readflash()
542 writeflash(Flash *f, long offset, void *buf, int n)  in writeflash()  argument
550 	if(f->write == nil || offset < 0 || offset+n > f->size)  in writeflash()
552 	rg = flashregion(f, offset);  in writeflash()
553 	if(f->protect && rg != nil && rg->start == 0 && offset < rg->erasesize)  in writeflash()
565 	if(offset&wmask){  in writeflash()
566 		o = offset & ~wmask;  in writeflash()
572 		for(; n > 0 && offset&wmask; n--)  in writeflash()
573 			tmp[offset++&wmask] = *p++;  in writeflash()
580 		if(f->write(f, offset, p, n) < 0)  in writeflash()
582 		offset += n;  in writeflash()
587 			if(f->read(f, offset, tmp, width) < 0)  in writeflash()
590 			memmove(tmp, (uchar*)f->addr+offset, width);  in writeflash()
592 		if(f->write(f, offset, tmp, width) < 0)  in writeflash()