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ahci.c revision 1.17.4.1
      1 /*	$NetBSD: ahci.c,v 1.17.4.1 2020/02/25 18:50:29 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2007 Ruslan Ermilov and Vsevolod Lobko.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or
      8  * without modification, are permitted provided that the following
      9  * conditions are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above
     13  *    copyright notice, this list of conditions and the following
     14  *    disclaimer in the documentation and/or other materials provided
     15  *    with the distribution.
     16  * 3. The names of the authors may not be used to endorse or promote
     17  *    products derived from this software without specific prior
     18  *    written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY
     21  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
     23  * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS
     24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
     25  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
     27  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
     29  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     30  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
     31  * OF SUCH DAMAGE.
     32  */
     33 /*
     34  * Copyright (c) 2001 The NetBSD Foundation, Inc.
     35  * All rights reserved.
     36  *
     37  * This code is derived from software contributed to The NetBSD Foundation
     38  * by Tetsuya Isaki.
     39  *
     40  * Redistribution and use in source and binary forms, with or without
     41  * modification, are permitted provided that the following conditions
     42  * are met:
     43  * 1. Redistributions of source code must retain the above copyright
     44  *    notice, this list of conditions and the following disclaimer.
     45  * 2. Redistributions in binary form must reproduce the above copyright
     46  *    notice, this list of conditions and the following disclaimer in the
     47  *    documentation and/or other materials provided with the distribution.
     48  *
     49  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     50  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     51  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     52  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     53  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     54  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     55  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     56  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     57  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     58  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     59  * POSSIBILITY OF SUCH DAMAGE.
     60  */
     61 
     62 /*
     63  * !! HIGHLY EXPERIMENTAL CODE !!
     64  */
     65 
     66 #include <sys/cdefs.h>
     67 __KERNEL_RCSID(0, "$NetBSD: ahci.c,v 1.17.4.1 2020/02/25 18:50:29 martin Exp $");
     68 
     69 #include <sys/param.h>
     70 #include <sys/systm.h>
     71 #include <sys/kernel.h>
     72 #include <sys/proc.h>
     73 #include <sys/device.h>
     74 #include <sys/kmem.h>
     75 
     76 #include <sys/bus.h>
     77 #include <machine/cpu.h>
     78 
     79 #include <dev/usb/usb.h>
     80 #include <dev/usb/usbdi.h>
     81 #include <dev/usb/usbdivar.h>
     82 #include <dev/usb/usb_mem.h>
     83 #include <dev/usb/usbdevs.h>
     84 #include <dev/usb/usbroothub.h>
     85 
     86 #include <mips/adm5120/include/adm5120reg.h>
     87 #include <mips/adm5120/include/adm5120var.h>
     88 #include <mips/adm5120/include/adm5120_obiovar.h>
     89 
     90 #include <mips/adm5120/dev/ahcireg.h>
     91 #include <mips/adm5120/dev/ahcivar.h>
     92 
     93 static usbd_status	ahci_open(struct usbd_pipe *);
     94 static void		ahci_softintr(void *);
     95 static void		ahci_poll(struct usbd_bus *);
     96 static void		ahci_poll_hub(void *);
     97 static void		ahci_poll_device(void *arg);
     98 static struct usbd_xfer *
     99 			ahci_allocx(struct usbd_bus *, unsigned int);
    100 static void		ahci_freex(struct usbd_bus *, struct usbd_xfer *);
    101 
    102 static void		ahci_get_lock(struct usbd_bus *, kmutex_t **);
    103 static int		ahci_roothub_ctrl(struct usbd_bus *, usb_device_request_t *,
    104     void *, int);
    105 
    106 static usbd_status	ahci_root_intr_transfer(struct usbd_xfer *);
    107 static usbd_status	ahci_root_intr_start(struct usbd_xfer *);
    108 static void		ahci_root_intr_abort(struct usbd_xfer *);
    109 static void		ahci_root_intr_close(struct usbd_pipe *);
    110 static void		ahci_root_intr_done(struct usbd_xfer *);
    111 
    112 static usbd_status	ahci_device_ctrl_transfer(struct usbd_xfer *);
    113 static usbd_status	ahci_device_ctrl_start(struct usbd_xfer *);
    114 static void		ahci_device_ctrl_abort(struct usbd_xfer *);
    115 static void		ahci_device_ctrl_close(struct usbd_pipe *);
    116 static void		ahci_device_ctrl_done(struct usbd_xfer *);
    117 
    118 static usbd_status	ahci_device_intr_transfer(struct usbd_xfer *);
    119 static usbd_status	ahci_device_intr_start(struct usbd_xfer *);
    120 static void		ahci_device_intr_abort(struct usbd_xfer *);
    121 static void		ahci_device_intr_close(struct usbd_pipe *);
    122 static void		ahci_device_intr_done(struct usbd_xfer *);
    123 
    124 static usbd_status	ahci_device_isoc_transfer(struct usbd_xfer *);
    125 static usbd_status	ahci_device_isoc_start(struct usbd_xfer *);
    126 static void		ahci_device_isoc_abort(struct usbd_xfer *);
    127 static void		ahci_device_isoc_close(struct usbd_pipe *);
    128 static void		ahci_device_isoc_done(struct usbd_xfer *);
    129 
    130 static usbd_status	ahci_device_bulk_transfer(struct usbd_xfer *);
    131 static usbd_status	ahci_device_bulk_start(struct usbd_xfer *);
    132 static void		ahci_device_bulk_abort(struct usbd_xfer *);
    133 static void		ahci_device_bulk_close(struct usbd_pipe *);
    134 static void		ahci_device_bulk_done(struct usbd_xfer *);
    135 
    136 static int		ahci_transaction(struct ahci_softc *,
    137 	struct usbd_pipe *, uint8_t, int, u_char *, uint8_t);
    138 static void		ahci_noop(struct usbd_pipe *);
    139 static void		ahci_abort_xfer(struct usbd_xfer *, usbd_status);
    140 static void		ahci_device_clear_toggle(struct usbd_pipe *);
    141 
    142 extern int usbdebug;
    143 extern int uhubdebug;
    144 extern int umassdebug;
    145 int ahci_dummy;
    146 
    147 #define AHCI_DEBUG
    148 
    149 #ifdef AHCI_DEBUG
    150 #define D_TRACE	(0x0001)	/* function trace */
    151 #define D_MSG	(0x0002)	/* debug messages */
    152 #define D_XFER	(0x0004)	/* transfer messages (noisy!) */
    153 #define D_MEM	(0x0008)	/* memory allocation */
    154 
    155 int ahci_debug = 0;
    156 #define DPRINTF(z,x)	if((ahci_debug&(z))!=0)printf x
    157 void		print_req(usb_device_request_t *);
    158 void		print_req_hub(usb_device_request_t *);
    159 void		print_dumpreg(struct ahci_softc *);
    160 void		print_xfer(struct usbd_xfer *);
    161 #else
    162 #define DPRINTF(z,x)
    163 #endif
    164 
    165 
    166 struct usbd_bus_methods ahci_bus_methods = {
    167 	.ubm_open = ahci_open,
    168 	.ubm_softint = ahci_softintr,
    169 	.ubm_dopoll = ahci_poll,
    170 	.ubm_allocx = ahci_allocx,
    171 	.ubm_freex = ahci_freex,
    172 	.ubm_getlock = ahci_get_lock,
    173 	.ubm_rhctrl = ahci_roothub_ctrl,
    174 };
    175 
    176 struct usbd_pipe_methods ahci_root_intr_methods = {
    177 	.upm_transfer = ahci_root_intr_transfer,
    178 	.upm_start = ahci_root_intr_start,
    179 	.upm_abort = ahci_root_intr_abort,
    180 	.upm_close = ahci_root_intr_close,
    181 	.upm_cleartoggle = ahci_noop,
    182 	.upm_done = ahci_root_intr_done,
    183 };
    184 
    185 struct usbd_pipe_methods ahci_device_ctrl_methods = {
    186 	.upm_transfer = ahci_device_ctrl_transfer,
    187 	.upm_start = ahci_device_ctrl_start,
    188 	.upm_abort = ahci_device_ctrl_abort,
    189 	.upm_close = ahci_device_ctrl_close,
    190 	.upm_cleartoggle = ahci_noop,
    191 	.upm_done = ahci_device_ctrl_done,
    192 };
    193 
    194 struct usbd_pipe_methods ahci_device_intr_methods = {
    195 	.upm_transfer = ahci_device_intr_transfer,
    196 	.upm_start = ahci_device_intr_start,
    197 	.upm_abort = ahci_device_intr_abort,
    198 	.upm_close = ahci_device_intr_close,
    199 	.upm_cleartoggle = ahci_device_clear_toggle,
    200 	.upm_done = ahci_device_intr_done,
    201 };
    202 
    203 struct usbd_pipe_methods ahci_device_isoc_methods = {
    204 	.upm_transfer = ahci_device_isoc_transfer,
    205 	.upm_start = ahci_device_isoc_start,
    206 	.upm_abort = ahci_device_isoc_abort,
    207 	.upm_close = ahci_device_isoc_close,
    208 	.upm_cleartoggle = ahci_noop,
    209 	.upm_done = ahci_device_isoc_done,
    210 };
    211 
    212 struct usbd_pipe_methods ahci_device_bulk_methods = {
    213 	.upm_transfer = ahci_device_bulk_transfer,
    214 	.upm_start = ahci_device_bulk_start,
    215 	.upm_abort = ahci_device_bulk_abort,
    216 	.upm_close = ahci_device_bulk_close,
    217 	.upm_cleartoggle = ahci_device_clear_toggle,
    218 	.upm_done = ahci_device_bulk_done,
    219 };
    220 
    221 struct ahci_pipe {
    222 	struct usbd_pipe pipe;
    223 	uint32_t toggle;
    224 };
    225 
    226 static int	ahci_match(device_t, cfdata_t, void *);
    227 static void	ahci_attach(device_t, device_t, void *);
    228 
    229 CFATTACH_DECL_NEW(ahci, sizeof(struct ahci_softc),
    230     ahci_match, ahci_attach, NULL, NULL);
    231 
    232 static int
    233 ahci_match(device_t parent, struct cfdata *cf, void *aux)
    234 {
    235 	struct obio_attach_args *aa = aux;
    236 
    237 	if (strcmp(aa->oba_name, cf->cf_name) == 0)
    238 		return 1;
    239 
    240 	return 0;
    241 }
    242 
    243 #define	REG_READ(o)	bus_space_read_4(sc->sc_st, sc->sc_ioh, (o))
    244 #define	REG_WRITE(o,v)	bus_space_write_4(sc->sc_st, sc->sc_ioh, (o),(v))
    245 
    246 /*
    247  * Attach SL11H/SL811HS. Return 0 if success.
    248  */
    249 void
    250 ahci_attach(device_t parent, device_t self, void *aux)
    251 {
    252 	struct obio_attach_args *aa = aux;
    253 	struct ahci_softc *sc = device_private(self);
    254 
    255 	printf("\n");
    256 	sc->sc_dmat = aa->oba_dt;
    257 	sc->sc_st = aa->oba_st;
    258 
    259 	/* Initialize sc */
    260 	sc->sc_bus.ub_revision = USBREV_1_1;
    261 	sc->sc_bus.ub_methods = &ahci_bus_methods;
    262 	sc->sc_bus.ub_pipesize = sizeof(struct ahci_pipe);
    263 	sc->sc_bus.ub_dmatag = sc->sc_dmat;
    264 	sc->sc_bus.ub_usedma = true;
    265 
    266 	/* Map the device. */
    267 	if (bus_space_map(sc->sc_st, aa->oba_addr,
    268 	    512, 0, &sc->sc_ioh) != 0) {
    269 		aprint_error_dev(self, "unable to map device\n");
    270 		return;
    271 	}
    272 
    273 	/* Hook up the interrupt handler. */
    274 	sc->sc_ih = adm5120_intr_establish(aa->oba_irq, INTR_IRQ, ahci_intr, sc);
    275 
    276 	if (sc->sc_ih == NULL) {
    277 		aprint_error_dev(self,
    278 		    "unable to register interrupt handler\n");
    279 		return;
    280 	}
    281 
    282 	SIMPLEQ_INIT(&sc->sc_free_xfers);
    283 
    284 	callout_init(&sc->sc_poll_handle, 0);
    285 
    286 	mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_SOFTUSB);
    287 	mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_SCHED /* XXXNH */);
    288 
    289 	REG_WRITE(ADMHCD_REG_INTENABLE, 0); /* disable interrupts */
    290 	REG_WRITE(ADMHCD_REG_CONTROL, ADMHCD_SW_RESET); /* reset */
    291 	delay_ms(10);
    292 	while (REG_READ(ADMHCD_REG_CONTROL) & ADMHCD_SW_RESET)
    293 		delay_ms(1);
    294 
    295 	REG_WRITE(ADMHCD_REG_CONTROL, ADMHCD_HOST_EN);
    296 	REG_WRITE(ADMHCD_REG_HOSTHEAD, 0x00000000);
    297 	REG_WRITE(ADMHCD_REG_FMINTERVAL, 0x20002edf);
    298 	REG_WRITE(ADMHCD_REG_LSTHRESH, 0x628);
    299 	REG_WRITE(ADMHCD_REG_RHDESCR, ADMHCD_NPS | ADMHCD_LPSC);
    300 	REG_WRITE(ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP);
    301 
    302 	REG_WRITE(ADMHCD_REG_INTENABLE, 0); /* XXX: enable interrupts */
    303 
    304 #ifdef USB_DEBUG
    305 	/* usbdebug = 0x7f;
    306 	uhubdebug = 0x7f;
    307 	umassdebug = 0xffffffff; */
    308 #endif
    309 
    310 	/* Attach USB devices */
    311 	sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint);
    312 
    313 }
    314 
    315 int
    316 ahci_intr(void *arg)
    317 {
    318 #if 0
    319 	struct ahci_softc *sc = arg;
    320 	uint8_t r;
    321 #ifdef AHCI_DEBUG
    322 	char bitbuf[256];
    323 #endif
    324 
    325 	r = sl11read(sc, SL11_ISR);
    326 
    327 	sl11write(sc, SL11_ISR, SL11_ISR_DATA | SL11_ISR_SOFTIMER);
    328 
    329 	if ((r & SL11_ISR_RESET)) {
    330 		sc->sc_flags |= AHCDF_RESET;
    331 		sl11write(sc, SL11_ISR, SL11_ISR_RESET);
    332 	}
    333 	if ((r & SL11_ISR_INSERT)) {
    334 		sc->sc_flags |= AHCDF_INSERT;
    335 		sl11write(sc, SL11_ISR, SL11_ISR_INSERT);
    336 	}
    337 
    338 #ifdef AHCI_DEBUG
    339 	snprintb(bitbuf, sizeof(bitbuf),
    340 	    ((sl11read(sc, SL11_CTRL) & SL11_CTRL_SUSPEND)
    341 	    ? "\20\x8""D+\7RESUME\6INSERT\5SOF\4res\3""BABBLE\2USBB\1USBA"
    342 	    : "\20\x8""D+\7RESET\6INSERT\5SOF\4res\3""BABBLE\2USBB\1USBA"),
    343 	    r);
    344 
    345 	DPRINTF(D_XFER, ("I=%s ", bitbuf));
    346 #endif /* AHCI_DEBUG */
    347 #endif
    348 
    349 	return 0;
    350 }
    351 
    352 usbd_status
    353 ahci_open(struct usbd_pipe *pipe)
    354 {
    355 	struct usbd_device *dev = pipe->up_dev;
    356 	struct ahci_pipe *apipe = (struct ahci_pipe *)pipe;
    357 	usb_endpoint_descriptor_t *ed = pipe->up_endpoint->ue_edesc;
    358 	uint8_t rhaddr = dev->ud_bus->ub_rhaddr;
    359 
    360 	DPRINTF(D_TRACE, ("ahci_open(addr=%d,ep=%d,scaddr=%d)",
    361 		dev->ud_addr, ed->bEndpointAddress, rhaddr));
    362 
    363 	apipe->toggle=0;
    364 
    365 	if (dev->ud_addr == rhaddr) {
    366 		switch (ed->bEndpointAddress) {
    367 		case USB_CONTROL_ENDPOINT:
    368 			pipe->up_methods = &roothub_ctrl_methods;
    369 			break;
    370 		case UE_DIR_IN | USBROOTHUB_INTR_ENDPT:
    371 			pipe->up_methods = &ahci_root_intr_methods;
    372 			break;
    373 		default:
    374 			printf("open:endpointErr!\n");
    375 			return USBD_INVAL;
    376 		}
    377 	} else {
    378 		switch (ed->bmAttributes & UE_XFERTYPE) {
    379 		case UE_CONTROL:
    380 			DPRINTF(D_MSG, ("control "));
    381 			pipe->up_methods = &ahci_device_ctrl_methods;
    382 			break;
    383 		case UE_INTERRUPT:
    384 			DPRINTF(D_MSG, ("interrupt "));
    385 			pipe->up_methods = &ahci_device_intr_methods;
    386 			break;
    387 		case UE_ISOCHRONOUS:
    388 			DPRINTF(D_MSG, ("isochronous "));
    389 			pipe->up_methods = &ahci_device_isoc_methods;
    390 			break;
    391 		case UE_BULK:
    392 			DPRINTF(D_MSG, ("bluk "));
    393 			pipe->up_methods = &ahci_device_bulk_methods;
    394 			break;
    395 		}
    396 	}
    397 	return USBD_NORMAL_COMPLETION;
    398 }
    399 
    400 void
    401 ahci_softintr(void *arg)
    402 {
    403 	DPRINTF(D_TRACE, ("%s()", __func__));
    404 }
    405 
    406 void
    407 ahci_poll(struct usbd_bus *bus)
    408 {
    409 	DPRINTF(D_TRACE, ("%s()", __func__));
    410 }
    411 
    412 #define AHCI_BUS2SC(bus)	((bus)->ub_hcpriv)
    413 #define AHCI_PIPE2SC(pipe)	AHCI_BUS2SC((pipe)->up_dev->ud_bus)
    414 #define AHCI_XFER2SC(xfer)	AHCI_BUS2SC((xfer)->ux_bus)
    415 #define AHCI_APIPE2SC(ap)	AHCI_BUS2SC((d)->pipe.up_dev->ud_bus)
    416 
    417 /*
    418  * Emulation of interrupt transfer for status change endpoint
    419  * of root hub.
    420  */
    421 void
    422 ahci_poll_hub(void *arg)
    423 {
    424 	struct usbd_xfer *xfer = arg;
    425 	struct ahci_softc *sc = AHCI_XFER2SC(xfer);
    426 	u_char *p;
    427 	static int p0_state=0;
    428 	static int p1_state=0;
    429 
    430 	callout_reset(&sc->sc_poll_handle, sc->sc_interval, ahci_poll_hub, xfer);
    431 
    432 	/* USB spec 11.13.3 (p.260) */
    433 	p = KERNADDR(&xfer->ux_dmabuf, 0);
    434 	p[0] = 0;
    435 	if ((REG_READ(ADMHCD_REG_PORTSTATUS0) & ADMHCD_CCS) != p0_state) {
    436 		p[0] = 2;
    437 		DPRINTF(D_TRACE, ("!"));
    438 		p0_state=(REG_READ(ADMHCD_REG_PORTSTATUS0) & ADMHCD_CCS);
    439 	};
    440 	if ((REG_READ(ADMHCD_REG_PORTSTATUS1) & ADMHCD_CCS) != p1_state) {
    441 		p[0] = 2;
    442 		DPRINTF(D_TRACE, ("@"));
    443 		p1_state=(REG_READ(ADMHCD_REG_PORTSTATUS1) & ADMHCD_CCS);
    444 	};
    445 
    446 	/* no change, return NAK */
    447 	if (p[0] == 0)
    448 		return;
    449 
    450 	xfer->ux_actlen = 1;
    451 	xfer->ux_status = USBD_NORMAL_COMPLETION;
    452 	mutex_enter(&sc->sc_lock);
    453 	usb_transfer_complete(xfer);
    454 	mutex_exit(&sc->sc_lock);
    455 }
    456 
    457 struct usbd_xfer *
    458 ahci_allocx(struct usbd_bus *bus, unsigned int nframes)
    459 {
    460 	struct ahci_softc *sc = AHCI_BUS2SC(bus);
    461 	struct usbd_xfer *xfer;
    462 
    463 	DPRINTF(D_MEM, ("SLallocx"));
    464 
    465 	xfer = SIMPLEQ_FIRST(&sc->sc_free_xfers);
    466 	if (xfer) {
    467 		SIMPLEQ_REMOVE_HEAD(&sc->sc_free_xfers, ux_next);
    468 #ifdef DIAGNOSTIC
    469 		if (xfer->ux_state != XFER_FREE) {
    470 			printf("ahci_allocx: xfer=%p not free, 0x%08x\n",
    471 				xfer, xfer->ux_state);
    472 		}
    473 #endif
    474 	} else {
    475 		xfer = kmem_alloc(sizeof(*xfer), KM_SLEEP);
    476 	}
    477 
    478 	memset(xfer, 0, sizeof(*xfer));
    479 #ifdef DIAGNOSTIC
    480 	xfer->ux_state = XFER_BUSY;
    481 #endif
    482 
    483 	return xfer;
    484 }
    485 
    486 void
    487 ahci_freex(struct usbd_bus *bus, struct usbd_xfer *xfer)
    488 {
    489 	struct ahci_softc *sc = AHCI_BUS2SC(bus);
    490 
    491 	DPRINTF(D_MEM, ("SLfreex"));
    492 
    493 #ifdef DIAGNOSTIC
    494 	if (xfer->ux_state != XFER_BUSY &&
    495 	    xfer->ux_status != USBD_NOT_STARTED) {
    496 		printf("ahci_freex: xfer=%p not busy, 0x%08x\n",
    497 			xfer, xfer->ux_state);
    498 		return;
    499 	}
    500 	xfer->ux_state = XFER_FREE;
    501 #endif
    502 	SIMPLEQ_INSERT_HEAD(&sc->sc_free_xfers, xfer, ux_next);
    503 }
    504 
    505 static void
    506 ahci_get_lock(struct usbd_bus *bus, kmutex_t **lock)
    507 {
    508 	struct ahci_softc *sc = AHCI_BUS2SC(bus);
    509 
    510 	*lock = &sc->sc_lock;
    511 }
    512 
    513 void
    514 ahci_noop(struct usbd_pipe *pipe)
    515 {
    516 	DPRINTF(D_TRACE, ("%s()", __func__));
    517 }
    518 
    519 /*
    520  * Data structures and routines to emulate the root hub.
    521  */
    522 
    523 static int
    524 ahci_roothub_ctrl(struct usbd_bus *bus, usb_device_request_t *req,
    525     void *buf, int buflen)
    526 {
    527 	struct ahci_softc *sc = AHCI_BUS2SC(bus);
    528 	uint16_t len, value, index;
    529 	usb_port_status_t ps;
    530 	int totlen = 0;
    531 	int status;
    532 
    533 	DPRINTF(D_TRACE, ("SLRCstart "));
    534 
    535 	len = UGETW(req->wLength);
    536 	value = UGETW(req->wValue);
    537 	index = UGETW(req->wIndex);
    538 
    539 #define C(x,y) ((x) | ((y) << 8))
    540 	switch (C(req->bRequest, req->bmRequestType)) {
    541 	case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE):
    542 		switch (value) {
    543 #define sd ((usb_string_descriptor_t *)buf)
    544 		case C(2, UDESC_STRING):
    545 			/* Product */
    546 			totlen = usb_makestrdesc(sd, len, "ADM5120 root hub");
    547 			break;
    548 		default:
    549 			printf("unknownGetDescriptor=%x", value);
    550 			/* FALLTHROUGH */
    551 		case C(0, UDESC_DEVICE):
    552 		case C(1, UDESC_STRING):
    553 			/* default from usbroothub */
    554 			return buflen;
    555 		}
    556 		break;
    557 	/*
    558 	 * Hub specific requests
    559 	 */
    560 	case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_DEVICE):
    561 		/* Clear Hub Feature, 11.16.2.1, not supported */
    562 		DPRINTF(D_MSG, ("ClearHubFeature not supported\n"));
    563 		break;
    564 	case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_OTHER):
    565 
    566 #define WPS(x) REG_WRITE(ADMHCD_REG_PORTSTATUS0+(index-1)*4, (x))
    567 		/* Clear Port Feature, 11.16.2.2 */
    568 		if (index != 1 && index != 2 ) {
    569 			return -1;
    570 		}
    571 		switch (value) {
    572 		case UHF_PORT_POWER:
    573 			DPRINTF(D_MSG, ("POWER_OFF "));
    574 			WPS(ADMHCD_LSDA);
    575 			break;
    576 		case UHF_PORT_SUSPEND:
    577 			DPRINTF(D_MSG, ("SUSPEND "));
    578 			WPS(ADMHCD_POCI);
    579 			break;
    580 		case UHF_PORT_ENABLE:
    581 			DPRINTF(D_MSG, ("ENABLE "));
    582 			WPS(ADMHCD_CCS);
    583 			break;
    584 		case UHF_C_PORT_CONNECTION:
    585 			WPS(ADMHCD_CSC);
    586 			break;
    587 		case UHF_C_PORT_RESET:
    588 			WPS(ADMHCD_PRSC);
    589 			break;
    590 		case UHF_C_PORT_SUSPEND:
    591 			WPS(ADMHCD_PSSC);
    592 			break;
    593 		case UHF_C_PORT_ENABLE:
    594 			WPS(ADMHCD_PESC);
    595 			break;
    596 		case UHF_C_PORT_OVER_CURRENT:
    597 			WPS(ADMHCD_OCIC);
    598 			break;
    599 		default:
    600 			printf("ClrPortFeatERR:value=0x%x ", value);
    601 			return -1;
    602 		}
    603 		//DPRINTF(D_XFER, ("CH=%04x ", sc->sc_change));
    604 #undef WPS
    605 		break;
    606 	case C(UR_GET_BUS_STATE, UT_READ_CLASS_OTHER):
    607 		/* Get Bus State, 11.16.2.3, not supported */
    608 		/* shall return a STALL... */
    609 		break;
    610 	case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE):
    611 		/* Get Hub Descriptor, 11.16.2.4 */
    612 		DPRINTF(D_MSG, ("UR_GET_DESCRIPTOR RCD"));
    613 		if ((value&0xff) != 0) {
    614 			return -1;
    615 		}
    616 		usb_hub_descriptor_t hubd;
    617 
    618 		totlen = uimin(buflen, sizeof(hubd));
    619 		memcpy(&hubd, buf, totlen);
    620 		hubd.bNbrPorts = 2;
    621 		USETW(hubd.wHubCharacteristics, 0);
    622 		hubd.bPwrOn2PwrGood = 0;
    623 		memcpy(buf, &hubd, totlen);
    624 		break;
    625 	case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE):
    626 		/* Get Hub Status, 11.16.2.5 */
    627 		DPRINTF(D_MSG, ("UR_GET_STATUS RCD"));
    628 		if (len != 4) {
    629 			return -1;
    630 		}
    631 		memset(buf, 0, len);
    632 		totlen = len;
    633 		break;
    634 	case C(UR_GET_STATUS, UT_READ_CLASS_OTHER):
    635 		/* Get Port Status, 11.16.2.6 */
    636 		if ((index != 1 && index != 2)  || len != 4) {
    637 			printf("index=%d,len=%d ", index, len);
    638 			return -1;
    639 		}
    640 		status = REG_READ(ADMHCD_REG_PORTSTATUS0+(index-1)*4);
    641 		DPRINTF(D_MSG, ("UR_GET_STATUS RCO=%x ", status));
    642 
    643 		//DPRINTF(D_XFER, ("ST=%04x,CH=%04x ", status, sc->sc_change));
    644 		USETW(ps.wPortStatus, status  & (UPS_CURRENT_CONNECT_STATUS|UPS_PORT_ENABLED|UPS_SUSPEND|UPS_OVERCURRENT_INDICATOR|UPS_RESET|UPS_PORT_POWER|UPS_LOW_SPEED));
    645 		USETW(ps.wPortChange, (status>>16) & (UPS_C_CONNECT_STATUS|UPS_C_PORT_ENABLED|UPS_C_SUSPEND|UPS_C_OVERCURRENT_INDICATOR|UPS_C_PORT_RESET));
    646 		totlen = uimin(len, sizeof(ps));
    647 		memcpy(buf, &ps, totlen);
    648 		break;
    649 	case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE):
    650 		/* Set Hub Descriptor, 11.16.2.7, not supported */
    651 		/* STALL ? */
    652 		return -1;
    653 	case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE):
    654 		/* Set Hub Feature, 11.16.2.8, not supported */
    655 		break;
    656 	case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER):
    657 #define WPS(x) REG_WRITE(ADMHCD_REG_PORTSTATUS0+(index-1)*4, (x))
    658 		/* Set Port Feature, 11.16.2.9 */
    659 		if ((index != 1) && (index !=2)) {
    660 			printf("index=%d ", index);
    661 			return -1;
    662 		}
    663 		switch (value) {
    664 		case UHF_PORT_RESET:
    665 			DPRINTF(D_MSG, ("PORT_RESET "));
    666 			WPS(ADMHCD_PRS);
    667 			break;
    668 		case UHF_PORT_POWER:
    669 			DPRINTF(D_MSG, ("PORT_POWER "));
    670 			WPS(ADMHCD_PPS);
    671 			break;
    672 		case UHF_PORT_ENABLE:
    673 			DPRINTF(D_MSG, ("PORT_ENABLE "));
    674 			WPS(ADMHCD_PES);
    675 			break;
    676 		default:
    677 			printf("SetPortFeatERR=0x%x ", value);
    678 			return -1;
    679 		}
    680 #undef WPS
    681 		break;
    682 	default:
    683 		DPRINTF(D_MSG, ("ioerr(UR=%02x,UT=%02x) ",
    684 			req->bRequest, req->bmRequestType));
    685 		/* default from usbroothub */
    686 		return buflen;
    687 	}
    688 
    689 	return totlen;
    690 }
    691 
    692 static usbd_status
    693 ahci_root_intr_transfer(struct usbd_xfer *xfer)
    694 {
    695 	struct ahci_softc *sc = AHCI_XFER2SC(xfer);
    696 	usbd_status error;
    697 
    698 	DPRINTF(D_TRACE, ("SLRItransfer "));
    699 
    700 	/* Insert last in queue */
    701 	mutex_enter(&sc->sc_lock);
    702 	error = usb_insert_transfer(xfer);
    703 	mutex_exit(&sc->sc_lock);
    704 	if (error)
    705 		return error;
    706 
    707 	/*
    708 	 * Pipe isn't running (otherwise error would be USBD_INPROG),
    709 	 * start first.
    710 	 */
    711 	return ahci_root_intr_start(SIMPLEQ_FIRST(&xfer->ux_pipe->up_queue));
    712 }
    713 
    714 static usbd_status
    715 ahci_root_intr_start(struct usbd_xfer *xfer)
    716 {
    717 	struct ahci_softc *sc = AHCI_XFER2SC(xfer);
    718 
    719 	DPRINTF(D_TRACE, ("SLRIstart "));
    720 
    721 	sc->sc_interval = MS_TO_TICKS(xfer->ux_pipe->up_endpoint->ue_edesc->bInterval);
    722 	callout_reset(&sc->sc_poll_handle, sc->sc_interval, ahci_poll_hub, xfer);
    723 	sc->sc_intr_xfer = xfer;
    724 	return USBD_IN_PROGRESS;
    725 }
    726 
    727 static void
    728 ahci_root_intr_abort(struct usbd_xfer *xfer)
    729 {
    730 	DPRINTF(D_TRACE, ("SLRIabort "));
    731 }
    732 
    733 static void
    734 ahci_root_intr_close(struct usbd_pipe *pipe)
    735 {
    736 	struct ahci_softc *sc = AHCI_PIPE2SC(pipe);
    737 
    738 	DPRINTF(D_TRACE, ("SLRIclose "));
    739 
    740 	callout_stop(&sc->sc_poll_handle);
    741 	sc->sc_intr_xfer = NULL;
    742 }
    743 
    744 static void
    745 ahci_root_intr_done(struct usbd_xfer *xfer)
    746 {
    747 	//DPRINTF(D_XFER, ("RIdn "));
    748 }
    749 
    750 static usbd_status
    751 ahci_device_ctrl_transfer(struct usbd_xfer *xfer)
    752 {
    753 	struct ahci_softc *sc = AHCI_XFER2SC(xfer);
    754 	usbd_status error;
    755 
    756 	DPRINTF(D_TRACE, ("C"));
    757 
    758 	mutex_enter(&sc->sc_lock);
    759 	error = usb_insert_transfer(xfer);
    760 	mutex_exit(&sc->sc_lock);
    761 	if (error)
    762 		return error;
    763 
    764 	return ahci_device_ctrl_start(SIMPLEQ_FIRST(&xfer->ux_pipe->up_queue));
    765 }
    766 
    767 static usbd_status
    768 ahci_device_ctrl_start(struct usbd_xfer *xfer)
    769 {
    770 	usbd_status status =  USBD_NORMAL_COMPLETION;
    771 	int s, err;
    772 	static struct admhcd_ed ep_v __attribute__((aligned(16))), *ep;
    773 	static struct admhcd_td td_v[4] __attribute__((aligned(16))), *td, *td1, *td2, *td3;
    774 	static usb_dma_t reqdma;
    775 	struct usbd_pipe *pipe = xfer->ux_pipe;
    776 	usb_device_request_t *req = &xfer->ux_request;
    777 	struct ahci_softc *sc = AHCI_XFER2SC(xfer);
    778 	int len, isread;
    779 
    780 
    781 #if 0
    782 	struct ahci_pipe *apipe = (struct ahci_pipe *)xfer->ux_pipe;
    783 #endif
    784 	mutex_enter(&sc->sc_lock);
    785 /*	printf("ctrl_start>>>\n"); */
    786 
    787 #ifdef DIAGNOSTIC
    788 	if (!(xfer->ux_rqflags & URQ_REQUEST)) {
    789 		/* XXX panic */
    790 		printf("ahci_device_ctrl_transfer: not a request\n");
    791 		return USBD_INVAL;
    792 	}
    793 #endif
    794 
    795 #define KSEG1ADDR(x) (0xa0000000 | (((uint32_t)x) & 0x1fffffff))
    796 	DPRINTF(D_TRACE, ("st "));
    797 	if (!ep) {
    798 		ep = (struct admhcd_ed *)KSEG1ADDR(&ep_v);
    799 		td = (struct admhcd_td *)KSEG1ADDR(&td_v[0]);
    800 		td1 = (struct admhcd_td *)KSEG1ADDR(&td_v[1]);
    801 		td2 = (struct admhcd_td *)KSEG1ADDR(&td_v[2]);
    802 		td3 = (struct admhcd_td *)KSEG1ADDR(&td_v[3]);
    803 		err = usb_allocmem(&sc->sc_bus,
    804 			sizeof(usb_device_request_t),
    805 			0, &reqdma);
    806 		if (err)
    807 			return USBD_NOMEM;
    808 
    809 		/* printf("ep: %p\n",ep); */
    810 	};
    811 
    812 	ep->control =  pipe->up_dev->ud_addr | \
    813 		((pipe->up_dev->ud_speed==USB_SPEED_FULL)?ADMHCD_ED_SPEED:0) | \
    814 		((UGETW(pipe->up_endpoint->ue_edesc->wMaxPacketSize))<<ADMHCD_ED_MAXSHIFT);
    815 	memcpy(KERNADDR(&reqdma, 0), req, sizeof *req);
    816 /* 	printf("status: %x\n",REG_READ(ADMHCD_REG_PORTSTATUS0));
    817 	printf("ep_control: %x\n",ep->control);
    818 	printf("speed: %x\n",pipe->up_dev->ud_speed);
    819 	printf("req: %p\n",req);
    820 	printf("dmabuf: %p\n",xfer->ux_dmabuf.block); */
    821 
    822 	isread = req->bmRequestType & UT_READ;
    823 	len = UGETW(req->wLength);
    824 
    825 	ep->next = ep;
    826 
    827 	td->buffer = DMAADDR(&reqdma,0) | 0xa0000000;
    828 	td->buflen=sizeof(*req);
    829 	td->control=ADMHCD_TD_SETUP | ADMHCD_TD_DATA0 | ADMHCD_TD_OWN;
    830 
    831 	if (len) {
    832 		td->next = td1;
    833 
    834 		td1->buffer = DMAADDR(&xfer->ux_dmabuf,0) | 0xa0000000;
    835 		td1->buflen = len;
    836 		td1->next = td2;
    837 		td1->control= (isread?ADMHCD_TD_IN:ADMHCD_TD_OUT) | ADMHCD_TD_DATA1 | ADMHCD_TD_R | ADMHCD_TD_OWN;
    838 	} else {
    839 		td1->control = 0;
    840 		td->next = td2;
    841 	};
    842 
    843 	td2->buffer = 0;
    844 	td2->buflen= 0;
    845 	td2->next = td3;
    846 	td2->control = (isread?ADMHCD_TD_OUT:ADMHCD_TD_IN) | ADMHCD_TD_DATA1 | ADMHCD_TD_OWN;
    847 
    848 	td3->buffer = 0;
    849 	td3->buflen= 0;
    850 	td3->next = 0;
    851 	td3->control = 0;
    852 
    853 	ep->head = td;
    854 	ep->tail = td3;
    855 /*
    856 	printf("ep: %p\n",ep);
    857 	printf("ep->next: %p\n",ep->next);
    858 	printf("ep->head: %p\n",ep->head);
    859 	printf("ep->tail: %p\n",ep->tail);
    860 	printf("td: %p\n",td);
    861 	printf("td->next: %p\n",td->next);
    862 	printf("td->buffer: %x\n",td->buffer);
    863 	printf("td->buflen: %x\n",td->buflen);
    864 	printf("td1: %p\n",td1);
    865 	printf("td1->next: %p\n",td1->next);
    866 	printf("td2: %p\n",td2);
    867 	printf("td2->next: %p\n",td2->next);
    868 	printf("td3: %p\n",td3);
    869 	printf("td3->next: %p\n",td3->next);
    870 */
    871 
    872 	REG_WRITE(ADMHCD_REG_HOSTHEAD, (uint32_t)ep);
    873 	REG_WRITE(ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP | ADMHCD_DMA_EN);
    874 /*	printf("1: %x %x %x %x\n", ep->control, td->control, td1->control, td2->control); */
    875 	s=100;
    876 	while (s--) {
    877 		delay_ms(10);
    878 /*                printf("%x %x %x %x\n", ep->control, td->control, td1->control, td2->control);*/
    879 		status = USBD_TIMEOUT;
    880 		if (td->control & ADMHCD_TD_OWN) continue;
    881 
    882 		err = (td->control & ADMHCD_TD_ERRMASK)>>ADMHCD_TD_ERRSHIFT;
    883 		if (err) {
    884 			status = USBD_IOERROR;
    885 			break;
    886 		};
    887 
    888 		status = USBD_TIMEOUT;
    889 		if (td1->control & ADMHCD_TD_OWN) continue;
    890 		err = (td1->control & ADMHCD_TD_ERRMASK)>>ADMHCD_TD_ERRSHIFT;
    891 		if (err) {
    892 			status = USBD_IOERROR;
    893 			break;
    894 		};
    895 
    896 		status = USBD_TIMEOUT;
    897 		if (td2->control & ADMHCD_TD_OWN) continue;
    898 		err = (td2->control & ADMHCD_TD_ERRMASK)>>ADMHCD_TD_ERRSHIFT;
    899 		if (err) {
    900 			status = USBD_IOERROR;
    901 		};
    902 		status = USBD_NORMAL_COMPLETION;
    903 		break;
    904 
    905 	};
    906 	REG_WRITE(ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP);
    907 
    908 	xfer->ux_actlen = len;
    909 	xfer->ux_status = status;
    910 
    911 /* 	printf("ctrl_start<<<\n"); */
    912 
    913 	usb_transfer_complete(xfer);
    914 	mutex_exit(&sc->sc_lock);
    915 
    916 	usb_freemem(&sc->sc_bus, &reqdma);
    917 
    918 	return USBD_NORMAL_COMPLETION;
    919 }
    920 
    921 static void
    922 ahci_device_ctrl_abort(struct usbd_xfer *xfer)
    923 {
    924 	DPRINTF(D_TRACE, ("Cab "));
    925 	ahci_abort_xfer(xfer, USBD_CANCELLED);
    926 }
    927 
    928 static void
    929 ahci_device_ctrl_close(struct usbd_pipe *pipe)
    930 {
    931 	DPRINTF(D_TRACE, ("Ccl "));
    932 }
    933 
    934 static void
    935 ahci_device_ctrl_done(struct usbd_xfer *xfer)
    936 {
    937 	DPRINTF(D_TRACE, ("Cdn "));
    938 }
    939 
    940 static usbd_status
    941 ahci_device_intr_transfer(struct usbd_xfer *xfer)
    942 {
    943 	struct ahci_softc *sc = AHCI_XFER2SC(xfer);
    944 	usbd_status error;
    945 
    946 	DPRINTF(D_TRACE, ("INTRtrans "));
    947 
    948 	mutex_enter(&sc->sc_lock);
    949 	error = usb_insert_transfer(xfer);
    950 	mutex_exit(&sc->sc_lock);
    951 	if (error)
    952 		return error;
    953 
    954 	return ahci_device_intr_start(SIMPLEQ_FIRST(&xfer->ux_pipe->up_queue));
    955 }
    956 
    957 static usbd_status
    958 ahci_device_intr_start(struct usbd_xfer *xfer)
    959 {
    960 	struct usbd_pipe *pipe = xfer->ux_pipe;
    961 	struct ahci_xfer *sx;
    962 
    963 	DPRINTF(D_TRACE, ("INTRstart "));
    964 
    965 	sx = kmem_intr_alloc(sizeof(*sx), KM_NOSLEEP);
    966 	if (sx == NULL)
    967 		goto reterr;
    968 	memset(sx, 0, sizeof(*sx));
    969 	sx->sx_xfer = xfer;
    970 	xfer->ux_hcpriv = sx;
    971 
    972 	/* initialize callout */
    973 	callout_init(&sx->sx_callout_t, 0);
    974 	callout_reset(&sx->sx_callout_t,
    975 		MS_TO_TICKS(pipe->up_endpoint->ue_edesc->bInterval),
    976 		ahci_poll_device, sx);
    977 
    978 	/* ACK */
    979 	return USBD_IN_PROGRESS;
    980 
    981  reterr:
    982 	return USBD_IOERROR;
    983 }
    984 
    985 static void
    986 ahci_poll_device(void *arg)
    987 {
    988 	struct ahci_xfer *sx = (struct ahci_xfer *)arg;
    989 	struct usbd_xfer *xfer = sx->sx_xfer;
    990 	struct usbd_pipe *pipe = xfer->ux_pipe;
    991 	struct ahci_softc *sc = AHCI_XFER2SC(xfer);
    992 	void *buf;
    993 	int pid;
    994 	int r;
    995 
    996 	DPRINTF(D_TRACE, ("pldev"));
    997 
    998 	callout_reset(&sx->sx_callout_t,
    999 		MS_TO_TICKS(pipe->up_endpoint->ue_edesc->bInterval),
   1000 		ahci_poll_device, sx);
   1001 
   1002 	/* interrupt transfer */
   1003 	pid = (UE_GET_DIR(pipe->up_endpoint->ue_edesc->bEndpointAddress) == UE_DIR_IN)
   1004 	    ? ADMHCD_TD_IN : ADMHCD_TD_OUT;
   1005 	buf = KERNADDR(&xfer->ux_dmabuf, 0);
   1006 
   1007 	r = ahci_transaction(sc, pipe, pid, xfer->ux_length, buf, 0/*toggle*/);
   1008 	if (r < 0) {
   1009 		DPRINTF(D_MSG, ("%s error", __func__));
   1010 		return;
   1011 	}
   1012 	/* no change, return NAK */
   1013 	if (r == 0)
   1014 		return;
   1015 
   1016 	xfer->ux_status = USBD_NORMAL_COMPLETION;
   1017 	mutex_enter(&sc->sc_lock);
   1018 	usb_transfer_complete(xfer);
   1019 	mutex_exit(&sc->sc_lock);
   1020 }
   1021 
   1022 static void
   1023 ahci_device_intr_abort(struct usbd_xfer *xfer)
   1024 {
   1025 	struct ahci_xfer *sx;
   1026 
   1027 	DPRINTF(D_TRACE, ("INTRabort "));
   1028 
   1029 	sx = xfer->ux_hcpriv;
   1030 	if (sx) {
   1031 		callout_stop(&sx->sx_callout_t);
   1032 		kmem_intr_free(sx, sizeof(*sx));
   1033 		xfer->ux_hcpriv = NULL;
   1034 	} else {
   1035 		printf("%s: sx == NULL!\n", __func__);
   1036 	}
   1037 	ahci_abort_xfer(xfer, USBD_CANCELLED);
   1038 }
   1039 
   1040 static void
   1041 ahci_device_intr_close(struct usbd_pipe *pipe)
   1042 {
   1043 	DPRINTF(D_TRACE, ("INTRclose "));
   1044 }
   1045 
   1046 static void
   1047 ahci_device_intr_done(struct usbd_xfer *xfer)
   1048 {
   1049 	DPRINTF(D_TRACE, ("INTRdone "));
   1050 }
   1051 
   1052 static usbd_status
   1053 ahci_device_isoc_transfer(struct usbd_xfer *xfer)
   1054 {
   1055 	DPRINTF(D_TRACE, ("S"));
   1056 	return USBD_NORMAL_COMPLETION;
   1057 }
   1058 
   1059 static usbd_status
   1060 ahci_device_isoc_start(struct usbd_xfer *xfer)
   1061 {
   1062 	DPRINTF(D_TRACE, ("st "));
   1063 	return USBD_NORMAL_COMPLETION;
   1064 }
   1065 
   1066 static void
   1067 ahci_device_isoc_abort(struct usbd_xfer *xfer)
   1068 {
   1069 	DPRINTF(D_TRACE, ("Sab "));
   1070 }
   1071 
   1072 static void
   1073 ahci_device_isoc_close(struct usbd_pipe *pipe)
   1074 {
   1075 	DPRINTF(D_TRACE, ("Scl "));
   1076 }
   1077 
   1078 static void
   1079 ahci_device_isoc_done(struct usbd_xfer *xfer)
   1080 {
   1081 	DPRINTF(D_TRACE, ("Sdn "));
   1082 }
   1083 
   1084 static usbd_status
   1085 ahci_device_bulk_transfer(struct usbd_xfer *xfer)
   1086 {
   1087 	struct ahci_softc *sc = AHCI_XFER2SC(xfer);
   1088 	usbd_status error;
   1089 
   1090 	DPRINTF(D_TRACE, ("B"));
   1091 
   1092 	mutex_enter(&sc->sc_lock);
   1093 	error = usb_insert_transfer(xfer);
   1094 	mutex_exit(&sc->sc_lock);
   1095 	if (error)
   1096 		return error;
   1097 
   1098 	return ahci_device_bulk_start(SIMPLEQ_FIRST(&xfer->ux_pipe->up_queue));
   1099 }
   1100 
   1101 static usbd_status
   1102 ahci_device_bulk_start(struct usbd_xfer *xfer)
   1103 {
   1104 #define NBULK_TDS 32
   1105 	static volatile int level = 0;
   1106 	usbd_status status =  USBD_NORMAL_COMPLETION;
   1107 	int s, err;
   1108 	static struct admhcd_ed ep_v __attribute__((aligned(16))), *ep;
   1109 	static struct admhcd_td td_v[NBULK_TDS] __attribute__((aligned(16))), *td[NBULK_TDS];
   1110 	struct usbd_pipe *pipe = xfer->ux_pipe;
   1111 	struct ahci_softc *sc = AHCI_XFER2SC(xfer);
   1112 	int endpt, i, len, tlen, segs, offset, isread, toggle, short_ok;
   1113 	struct ahci_pipe *apipe = (struct ahci_pipe *)xfer->ux_pipe;
   1114 
   1115 #define KSEG1ADDR(x) (0xa0000000 | (((uint32_t)x) & 0x1fffffff))
   1116 	DPRINTF(D_TRACE, ("st "));
   1117 
   1118 #ifdef DIAGNOSTIC
   1119 	if (xfer->ux_rqflags & URQ_REQUEST) {
   1120 		/* XXX panic */
   1121 		printf("ohci_device_bulk_start: a request\n");
   1122 		return USBD_INVAL;
   1123 	}
   1124 #endif
   1125 
   1126 	mutex_enter(&sc->sc_lock);
   1127 	level++;
   1128 /* 	printf("bulk_start>>>\n"); */
   1129 
   1130 	if (!ep) {
   1131 		ep = (struct admhcd_ed *)KSEG1ADDR(&ep_v);
   1132 		for (i=0; i<NBULK_TDS; i++) {
   1133 			td[i] = (struct admhcd_td *)KSEG1ADDR(&td_v[i]);
   1134 		};
   1135 /*		printf("ep: %p\n",ep);*/
   1136 	};
   1137 	if (apipe->toggle == 0) {
   1138 		toggle = ADMHCD_TD_DATA0;
   1139 	} else {
   1140 		toggle = apipe->toggle;
   1141 	};
   1142 
   1143 	endpt = pipe->up_endpoint->ue_edesc->bEndpointAddress;
   1144 	ep->control = pipe->up_dev->ud_addr | ((endpt & 0xf) << ADMHCD_ED_EPSHIFT)|\
   1145 		((pipe->up_dev->ud_speed==USB_SPEED_FULL)?ADMHCD_ED_SPEED:0) | \
   1146 		((UGETW(pipe->up_endpoint->ue_edesc->wMaxPacketSize))<<ADMHCD_ED_MAXSHIFT);
   1147 
   1148 	short_ok = xfer->ux_flags & USBD_SHORT_XFER_OK?ADMHCD_TD_R:0;
   1149 /*	printf("level: %d\n",level);
   1150 	printf("short_xfer: %x\n",short_ok);
   1151 	printf("ep_control: %x\n",ep->control);
   1152 	printf("speed: %x\n",pipe->up_dev->ud_speed);
   1153 	printf("dmabuf: %p\n",xfer->ux_dmabuf.block); */
   1154 
   1155 	isread = UE_GET_DIR(endpt) == UE_DIR_IN;
   1156 	len = xfer->ux_length;
   1157 
   1158 	ep->next = ep;
   1159 
   1160 	i = 0;
   1161 	offset = 0;
   1162 	while ((len>0) || (i==0)) {
   1163 		tlen = uimin(len,4096);
   1164 		td[i]->buffer = DMAADDR(&xfer->ux_dmabuf,offset) | 0xa0000000;
   1165 		td[i]->buflen=tlen;
   1166 		td[i]->control=(isread?ADMHCD_TD_IN:ADMHCD_TD_OUT) | toggle | ADMHCD_TD_OWN | short_ok;
   1167 		td[i]->len=tlen;
   1168 		toggle = ADMHCD_TD_TOGGLE;
   1169 		len -= tlen;
   1170 		offset += tlen;
   1171 		td[i]->next = td[i+1];
   1172 		i++;
   1173 	};
   1174 
   1175 	td[i]->buffer = 0;
   1176 	td[i]->buflen = 0;
   1177 	td[i]->control = 0;
   1178 	td[i]->next = 0;
   1179 
   1180 	ep->head = td[0];
   1181 	ep->tail = td[i];
   1182 	segs = i;
   1183 	len = 0;
   1184 
   1185 /*	printf("segs: %d\n",segs);
   1186 	printf("ep: %p\n",ep);
   1187 	printf("ep->control: %x\n",ep->control);
   1188 	printf("ep->next: %p\n",ep->next);
   1189 	printf("ep->head: %p\n",ep->head);
   1190 	printf("ep->tail: %p\n",ep->tail);
   1191 	for (i=0; i<segs; i++) {
   1192 		printf("td[%d]: %p\n",i,td[i]);
   1193 		printf("td[%d]->control: %x\n",i,td[i]->control);
   1194 		printf("td[%d]->next: %p\n",i,td[i]->next);
   1195 		printf("td[%d]->buffer: %x\n",i,td[i]->buffer);
   1196 		printf("td[%d]->buflen: %x\n",i,td[i]->buflen);
   1197 	}; */
   1198 
   1199 	REG_WRITE(ADMHCD_REG_HOSTHEAD, (uint32_t)ep);
   1200 	REG_WRITE(ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP | ADMHCD_DMA_EN);
   1201 	i = 0;
   1202 /*	printf("1: %x %d %x %x\n", ep->control, i, td[i]->control, td[i]->buflen); */
   1203 	s=100;
   1204 	err = 0;
   1205 	while (s--) {
   1206 /*                printf("%x %d %x %x\n", ep->control, i, td[i]->control, td[i]->buflen); */
   1207 		status = USBD_TIMEOUT;
   1208 		if (td[i]->control & ADMHCD_TD_OWN) {
   1209 			delay_ms(3);
   1210 			continue;
   1211 		};
   1212 
   1213 		len += td[i]->len - td[i]->buflen;
   1214 
   1215 		err = (td[i]->control & ADMHCD_TD_ERRMASK)>>ADMHCD_TD_ERRSHIFT;
   1216 		if (err) {
   1217 			status = USBD_IOERROR;
   1218 			break;
   1219 		};
   1220 
   1221 		i++;
   1222 		if (i==segs) {
   1223 			status = USBD_NORMAL_COMPLETION;
   1224 			break;
   1225 		};
   1226 
   1227 	};
   1228 	REG_WRITE(ADMHCD_REG_HOSTCONTROL, ADMHCD_STATE_OP);
   1229 
   1230 	apipe->toggle = ((uint32_t)ep->head & 2)?ADMHCD_TD_DATA1:ADMHCD_TD_DATA0;
   1231 /*	printf("bulk_transfer_done: status: %x, err: %x, len: %x, toggle: %x\n", status,err,len,apipe->toggle); */
   1232 
   1233 	if (short_ok && (err == 0x9 || err == 0xd)) {
   1234 /*		printf("bulk_transfer_done: short_transfer fix\n"); */
   1235 		status = USBD_NORMAL_COMPLETION;
   1236 	};
   1237 	xfer->ux_actlen = len;
   1238 	xfer->ux_status = status;
   1239 
   1240 	level--;
   1241 /*	printf("bulk_start<<<\n"); */
   1242 
   1243 	usb_transfer_complete(xfer);
   1244 	mutex_exit(&sc->sc_lock);
   1245 
   1246 	return USBD_NORMAL_COMPLETION;
   1247 }
   1248 
   1249 static void
   1250 ahci_device_bulk_abort(struct usbd_xfer *xfer)
   1251 {
   1252 	DPRINTF(D_TRACE, ("Bab "));
   1253 	ahci_abort_xfer(xfer, USBD_CANCELLED);
   1254 }
   1255 
   1256 static void
   1257 ahci_device_bulk_close(struct usbd_pipe *pipe)
   1258 {
   1259 	DPRINTF(D_TRACE, ("Bcl "));
   1260 }
   1261 
   1262 static void
   1263 ahci_device_bulk_done(struct usbd_xfer *xfer)
   1264 {
   1265 	DPRINTF(D_TRACE, ("Bdn "));
   1266 }
   1267 
   1268 #define DATA0_RD	(0x03)
   1269 #define DATA0_WR	(0x07)
   1270 #define AHCI_TIMEOUT	(5000)
   1271 
   1272 /*
   1273  * Do a transaction.
   1274  * return 1 if ACK, 0 if NAK, -1 if error.
   1275  */
   1276 static int
   1277 ahci_transaction(struct ahci_softc *sc, struct usbd_pipe *pipe,
   1278 	uint8_t pid, int len, u_char *buf, uint8_t toggle)
   1279 {
   1280 	return -1;
   1281 #if 0
   1282 #ifdef AHCI_DEBUG
   1283 	char str[64];
   1284 	int i;
   1285 #endif
   1286 	int timeout;
   1287 	int ls_via_hub = 0;
   1288 	int pl;
   1289 	uint8_t isr;
   1290 	uint8_t result = 0;
   1291 	uint8_t devaddr = pipe->up_dev->ud_addr;
   1292 	uint8_t endpointaddr = pipe->up_endpoint->ue_edesc->bEndpointAddress;
   1293 	uint8_t endpoint;
   1294 	uint8_t cmd = DATA0_RD;
   1295 
   1296 	endpoint = UE_GET_ADDR(endpointaddr);
   1297 	DPRINTF(D_XFER, ("\n(%x,%d%s%d,%d) ",
   1298 		pid, len, (pid == SL11_PID_IN) ? "<-" : "->", devaddr, endpoint));
   1299 
   1300 	/* Set registers */
   1301 	sl11write(sc, SL11_E0ADDR, 0x40);
   1302 	sl11write(sc, SL11_E0LEN,  len);
   1303 	sl11write(sc, SL11_E0PID,  (pid << 4) + endpoint);
   1304 	sl11write(sc, SL11_E0DEV,  devaddr);
   1305 
   1306 	/* Set buffer unless PID_IN */
   1307 	if (pid != SL11_PID_IN) {
   1308 		if (len > 0)
   1309 			sl11write_region(sc, 0x40, buf, len);
   1310 		cmd = DATA0_WR;
   1311 	}
   1312 
   1313 	/* timing ? */
   1314 	pl = (len >> 3) + 3;
   1315 
   1316 	/* Low speed device via HUB */
   1317 	/* XXX does not work... */
   1318 	if ((sc->sc_fullspeed) && pipe->up_dev->ud_speed == USB_SPEED_LOW) {
   1319 		pl = len + 16;
   1320 		cmd |= SL11_EPCTRL_PREAMBLE;
   1321 
   1322 		/*
   1323 		 * SL811HS/T rev 1.2 has a bug, when it got PID_IN
   1324 		 * from LowSpeed device via HUB.
   1325 		 */
   1326 		if (sc->sc_sltype == SLTYPE_SL811HS_R12 && pid == SL11_PID_IN) {
   1327 			ls_via_hub = 1;
   1328 			DPRINTF(D_MSG, ("LSvH "));
   1329 		}
   1330 	}
   1331 
   1332 	/* timing ? */
   1333 	if (sl11read(sc, SL811_CSOF) <= (uint8_t)pl)
   1334 		cmd |= SL11_EPCTRL_SOF;
   1335 
   1336 	/* Transfer */
   1337 	sl11write(sc, SL11_ISR, 0xff);
   1338 	sl11write(sc, SL11_E0CTRL, cmd | toggle);
   1339 
   1340 	/* Polling */
   1341 	for (timeout = AHCI_TIMEOUT; timeout; timeout--) {
   1342 		isr = sl11read(sc, SL11_ISR);
   1343 		if ((isr & SL11_ISR_USBA))
   1344 			break;
   1345 	}
   1346 
   1347 	/* Check result status */
   1348 	result = sl11read(sc, SL11_E0STAT);
   1349 	if (!(result & SL11_EPSTAT_NAK) && ls_via_hub) {
   1350 		/* Resend PID_IN within 20usec */
   1351 		sl11write(sc, SL11_ISR, 0xff);
   1352 		sl11write(sc, SL11_E0CTRL, SL11_EPCTRL_ARM);
   1353 	}
   1354 
   1355 	sl11write(sc, SL11_ISR, 0xff);
   1356 
   1357 	DPRINTF(D_XFER, ("t=%d i=%x ", AHCI_TIMEOUT - timeout, isr));
   1358 #if AHCI_DEBUG
   1359 	snprintb(str, sizeof(str),
   1360 	    "\20\x8STALL\7NAK\6OV\5SETUP\4DATA1\3TIMEOUT\2ERR\1ACK", result);
   1361 	DPRINTF(D_XFER, ("STAT=%s ", str));
   1362 #endif
   1363 
   1364 	if ((result & SL11_EPSTAT_ERROR))
   1365 		return -1;
   1366 
   1367 	if ((result & SL11_EPSTAT_NAK))
   1368 		return 0;
   1369 
   1370 	/* Read buffer if PID_IN */
   1371 	if (pid == SL11_PID_IN && len > 0) {
   1372 		sl11read_region(sc, buf, 0x40, len);
   1373 #if AHCI_DEBUG
   1374 		for (i = 0; i < len; i++)
   1375 			DPRINTF(D_XFER, ("%02X ", buf[i]));
   1376 #endif
   1377 	}
   1378 
   1379 	return 1;
   1380 #endif
   1381 }
   1382 
   1383 void
   1384 ahci_abort_xfer(struct usbd_xfer *xfer, usbd_status status)
   1385 {
   1386 	xfer->ux_status = status;
   1387 	usb_transfer_complete(xfer);
   1388 }
   1389 
   1390 void
   1391 ahci_device_clear_toggle(struct usbd_pipe *pipe)
   1392 {
   1393 	struct ahci_pipe *apipe = (struct ahci_pipe *)pipe;
   1394 	apipe->toggle = 0;
   1395 }
   1396 
   1397 #ifdef AHCI_DEBUG
   1398 void
   1399 print_req(usb_device_request_t *r)
   1400 {
   1401 	const char *xmes[]={
   1402 		"GETSTAT",
   1403 		"CLRFEAT",
   1404 		"res",
   1405 		"SETFEAT",
   1406 		"res",
   1407 		"SETADDR",
   1408 		"GETDESC",
   1409 		"SETDESC",
   1410 		"GETCONF",
   1411 		"SETCONF",
   1412 		"GETIN/F",
   1413 		"SETIN/F",
   1414 		"SYNC_FR"
   1415 	};
   1416 	int req, type, value, index, len;
   1417 
   1418 	req   = r->bRequest;
   1419 	type  = r->bmRequestType;
   1420 	value = UGETW(r->wValue);
   1421 	index = UGETW(r->wIndex);
   1422 	len   = UGETW(r->wLength);
   1423 
   1424 	printf("%x,%s,v=%d,i=%d,l=%d ",
   1425 		type, xmes[req], value, index, len);
   1426 }
   1427 
   1428 void
   1429 print_req_hub(usb_device_request_t *r)
   1430 {
   1431 	struct {
   1432 		int req;
   1433 		int type;
   1434 		const char *str;
   1435 	} conf[] = {
   1436 		{ 1, 0x20, "ClrHubFeat"  },
   1437 		{ 1, 0x23, "ClrPortFeat" },
   1438 		{ 2, 0xa3, "GetBusState" },
   1439 		{ 6, 0xa0, "GetHubDesc"  },
   1440 		{ 0, 0xa0, "GetHubStat"  },
   1441 		{ 0, 0xa3, "GetPortStat" },
   1442 		{ 7, 0x20, "SetHubDesc"  },
   1443 		{ 3, 0x20, "SetHubFeat"  },
   1444 		{ 3, 0x23, "SetPortFeat" },
   1445 		{-1, 0, NULL},
   1446 	};
   1447 	int i;
   1448 	int value, index, len;
   1449 
   1450 	value = UGETW(r->wValue);
   1451 	index = UGETW(r->wIndex);
   1452 	len   = UGETW(r->wLength);
   1453 	for (i = 0; ; i++) {
   1454 		if (conf[i].req == -1 )
   1455 			return print_req(r);
   1456 		if (r->bmRequestType == conf[i].type && r->bRequest == conf[i].req) {
   1457 			printf("%s", conf[i].str);
   1458 			break;
   1459 		}
   1460 	}
   1461 	printf(",v=%d,i=%d,l=%d ", value, index, len);
   1462 }
   1463 
   1464 void
   1465 print_dumpreg(struct ahci_softc *sc)
   1466 {
   1467 #if 0
   1468 	printf("00=%02x,01=%02x,02=%02x,03=%02x,04=%02x,"
   1469 	       "08=%02x,09=%02x,0A=%02x,0B=%02x,0C=%02x,",
   1470 		sl11read(sc, 0),  sl11read(sc, 1),
   1471 		sl11read(sc, 2),  sl11read(sc, 3),
   1472 		sl11read(sc, 4),  sl11read(sc, 8),
   1473 		sl11read(sc, 9),  sl11read(sc, 10),
   1474 		sl11read(sc, 11), sl11read(sc, 12)
   1475 	);
   1476 	printf("CR1=%02x,IER=%02x,0D=%02x,0E=%02x,0F=%02x ",
   1477 		sl11read(sc, 5), sl11read(sc, 6),
   1478 		sl11read(sc, 13), sl11read(sc, 14), sl11read(sc, 15)
   1479 	);
   1480 #endif
   1481 }
   1482 
   1483 void
   1484 print_xfer(struct usbd_xfer *xfer)
   1485 {
   1486 	printf("xfer: length=%d, actlen=%d, flags=%x, timeout=%d,",
   1487 		xfer->ux_length, xfer->ux_actlen, xfer->ux_flags, xfer->ux_timeout);
   1488 	printf("request{ ");
   1489 	print_req_hub(&xfer->ux_request);
   1490 	printf("} ");
   1491 }
   1492 #endif /* AHCI_DEBUG */
   1493