xref: /freebsd/sys/dev/ata/chipsets/ata-siliconimage.c (revision 8be96e101f2691b80ff9562b72f874da82e735aa)
1 /*-
2  * Copyright (c) 1998 - 2008 S�ren Schmidt <sos@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer,
10  *    without modification, immediately at the beginning of the file.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26 
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29 
30 #include "opt_ata.h"
31 #include <sys/param.h>
32 #include <sys/module.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/ata.h>
36 #include <sys/bus.h>
37 #include <sys/endian.h>
38 #include <sys/malloc.h>
39 #include <sys/lock.h>
40 #include <sys/mutex.h>
41 #include <sys/sema.h>
42 #include <sys/taskqueue.h>
43 #include <vm/uma.h>
44 #include <machine/stdarg.h>
45 #include <machine/resource.h>
46 #include <machine/bus.h>
47 #include <sys/rman.h>
48 #include <dev/pci/pcivar.h>
49 #include <dev/pci/pcireg.h>
50 #include <dev/ata/ata-all.h>
51 #include <dev/ata/ata-pci.h>
52 #include <ata_if.h>
53 
54 /* local prototypes */
55 static int ata_cmd_ch_attach(device_t dev);
56 static int ata_cmd_status(device_t dev);
57 static int ata_cmd_setmode(device_t dev, int target, int mode);
58 static int ata_sii_ch_attach(device_t dev);
59 static int ata_sii_ch_detach(device_t dev);
60 static int ata_sii_status(device_t dev);
61 static void ata_sii_reset(device_t dev);
62 static int ata_sii_setmode(device_t dev, int target, int mode);
63 static int ata_siiprb_ch_attach(device_t dev);
64 static int ata_siiprb_ch_detach(device_t dev);
65 static int ata_siiprb_status(device_t dev);
66 static int ata_siiprb_begin_transaction(struct ata_request *request);
67 static int ata_siiprb_end_transaction(struct ata_request *request);
68 static int ata_siiprb_pm_read(device_t dev, int port, int reg, u_int32_t *result);
69 static int ata_siiprb_pm_write(device_t dev, int port, int reg, u_int32_t result);
70 static u_int32_t ata_siiprb_softreset(device_t dev, int port);
71 static void ata_siiprb_reset(device_t dev);
72 static void ata_siiprb_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error);
73 static void ata_siiprb_dmainit(device_t dev);
74 
75 /* misc defines */
76 #define SII_MEMIO	1
77 #define SII_PRBIO	2
78 #define SII_INTR	0x01
79 #define SII_SETCLK	0x02
80 #define SII_BUG		0x04
81 #define SII_4CH		0x08
82 
83 
84 /*
85  * Silicon Image Inc. (SiI) (former CMD) chipset support functions
86  */
87 static int
88 ata_sii_probe(device_t dev)
89 {
90     struct ata_pci_controller *ctlr = device_get_softc(dev);
91     static struct ata_chip_id ids[] =
92     {{ ATA_SII3114,   0x00, SII_MEMIO, SII_4CH,    ATA_SA150, "3114" },
93      { ATA_SII3512,   0x02, SII_MEMIO, 0,          ATA_SA150, "3512" },
94      { ATA_SII3112,   0x02, SII_MEMIO, 0,          ATA_SA150, "3112" },
95      { ATA_SII3112_1, 0x02, SII_MEMIO, 0,          ATA_SA150, "3112" },
96      { ATA_SII3512,   0x00, SII_MEMIO, SII_BUG,    ATA_SA150, "3512" },
97      { ATA_SII3112,   0x00, SII_MEMIO, SII_BUG,    ATA_SA150, "3112" },
98      { ATA_SII3112_1, 0x00, SII_MEMIO, SII_BUG,    ATA_SA150, "3112" },
99      { ATA_SII3124,   0x00, SII_PRBIO, SII_4CH,    ATA_SA300, "3124" },
100      { ATA_SII3132,   0x00, SII_PRBIO, 0,          ATA_SA300, "3132" },
101      { ATA_SII3132_1, 0x00, SII_PRBIO, 0,          ATA_SA300, "3132" },
102      { ATA_SII3132_2, 0x00, SII_PRBIO, 0,          ATA_SA300, "3132" },
103      { ATA_SII0680,   0x00, SII_MEMIO, SII_SETCLK, ATA_UDMA6, "680" },
104      { ATA_CMD649,    0x00, 0,         SII_INTR,   ATA_UDMA5, "(CMD) 649" },
105      { ATA_CMD648,    0x00, 0,         SII_INTR,   ATA_UDMA4, "(CMD) 648" },
106      { ATA_CMD646,    0x07, 0,         0,          ATA_UDMA2, "(CMD) 646U2" },
107      { ATA_CMD646,    0x00, 0,         0,          ATA_WDMA2, "(CMD) 646" },
108      { 0, 0, 0, 0, 0, 0}};
109 
110     if (pci_get_vendor(dev) != ATA_SILICON_IMAGE_ID)
111 	return ENXIO;
112 
113     if (!(ctlr->chip = ata_match_chip(dev, ids)))
114 	return ENXIO;
115 
116     ata_set_desc(dev);
117     ctlr->chipinit = ata_sii_chipinit;
118     return (BUS_PROBE_DEFAULT);
119 }
120 
121 int
122 ata_sii_chipinit(device_t dev)
123 {
124     struct ata_pci_controller *ctlr = device_get_softc(dev);
125 
126     if (ata_setup_interrupt(dev, ata_generic_intr))
127 	return ENXIO;
128 
129     switch (ctlr->chip->cfg1) {
130     case SII_PRBIO:
131 	ctlr->r_type1 = SYS_RES_MEMORY;
132 	ctlr->r_rid1 = PCIR_BAR(0);
133 	if (!(ctlr->r_res1 = bus_alloc_resource_any(dev, ctlr->r_type1,
134 						    &ctlr->r_rid1, RF_ACTIVE)))
135 	    return ENXIO;
136 
137 	ctlr->r_rid2 = PCIR_BAR(2);
138 	ctlr->r_type2 = SYS_RES_MEMORY;
139 	if (!(ctlr->r_res2 = bus_alloc_resource_any(dev, ctlr->r_type2,
140 						    &ctlr->r_rid2, RF_ACTIVE))){
141 	    bus_release_resource(dev, ctlr->r_type1, ctlr->r_rid1,ctlr->r_res1);
142 	    return ENXIO;
143 	}
144 	ctlr->ch_attach = ata_siiprb_ch_attach;
145 	ctlr->ch_detach = ata_siiprb_ch_detach;
146 	ctlr->reset = ata_siiprb_reset;
147 	ctlr->setmode = ata_sata_setmode;
148 	ctlr->getrev = ata_sata_getrev;
149 	ctlr->channels = (ctlr->chip->cfg2 == SII_4CH) ? 4 : 2;
150 
151 	/* reset controller */
152 	ATA_OUTL(ctlr->r_res1, 0x0040, 0x80000000);
153 	DELAY(10000);
154 	ATA_OUTL(ctlr->r_res1, 0x0040, 0x0000000f);
155 	break;
156 
157     case SII_MEMIO:
158 	ctlr->r_type2 = SYS_RES_MEMORY;
159 	ctlr->r_rid2 = PCIR_BAR(5);
160 	if (!(ctlr->r_res2 = bus_alloc_resource_any(dev, ctlr->r_type2,
161 						    &ctlr->r_rid2, RF_ACTIVE))){
162 	    if (ctlr->chip->chipid != ATA_SII0680 ||
163 			    (pci_read_config(dev, 0x8a, 1) & 1))
164 		return ENXIO;
165 	}
166 
167 	if (ctlr->chip->cfg2 & SII_SETCLK) {
168 	    if ((pci_read_config(dev, 0x8a, 1) & 0x30) != 0x10)
169 		pci_write_config(dev, 0x8a,
170 				 (pci_read_config(dev, 0x8a, 1) & 0xcf)|0x10,1);
171 	    if ((pci_read_config(dev, 0x8a, 1) & 0x30) != 0x10)
172 		device_printf(dev, "%s could not set ATA133 clock\n",
173 			      ctlr->chip->text);
174 	}
175 
176 	/* if we have 4 channels enable the second set */
177 	if (ctlr->chip->cfg2 & SII_4CH) {
178 	    ATA_OUTL(ctlr->r_res2, 0x0200, 0x00000002);
179 	    ctlr->channels = 4;
180 	}
181 
182 	/* dont block interrupts from any channel */
183 	pci_write_config(dev, 0x48,
184 			 (pci_read_config(dev, 0x48, 4) & ~0x03c00000), 4);
185 
186 	/* enable PCI interrupt as BIOS might not */
187 	pci_write_config(dev, 0x8a, (pci_read_config(dev, 0x8a, 1) & 0x3f), 1);
188 
189 	if (ctlr->r_res2) {
190 	    ctlr->ch_attach = ata_sii_ch_attach;
191 	    ctlr->ch_detach = ata_sii_ch_detach;
192 	}
193 
194 	if (ctlr->chip->max_dma >= ATA_SA150) {
195 	    ctlr->reset = ata_sii_reset;
196 	    ctlr->setmode = ata_sata_setmode;
197 	    ctlr->getrev = ata_sata_getrev;
198 	}
199 	else
200 	    ctlr->setmode = ata_sii_setmode;
201 	break;
202 
203     default:
204 	if ((pci_read_config(dev, 0x51, 1) & 0x08) != 0x08) {
205 	    device_printf(dev, "HW has secondary channel disabled\n");
206 	    ctlr->channels = 1;
207 	}
208 
209 	/* enable interrupt as BIOS might not */
210 	pci_write_config(dev, 0x71, 0x01, 1);
211 
212 	ctlr->ch_attach = ata_cmd_ch_attach;
213 	ctlr->ch_detach = ata_pci_ch_detach;
214 	ctlr->setmode = ata_cmd_setmode;
215 	break;
216     }
217     return 0;
218 }
219 
220 static int
221 ata_cmd_ch_attach(device_t dev)
222 {
223     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
224     struct ata_channel *ch = device_get_softc(dev);
225 
226     /* setup the usual register normal pci style */
227     if (ata_pci_ch_attach(dev))
228 	return ENXIO;
229 
230     if (ctlr->chip->cfg2 & SII_INTR)
231 	ch->hw.status = ata_cmd_status;
232 
233     return 0;
234 }
235 
236 static int
237 ata_cmd_status(device_t dev)
238 {
239     struct ata_channel *ch = device_get_softc(dev);
240     u_int8_t reg71;
241 
242     if (((reg71 = pci_read_config(device_get_parent(dev), 0x71, 1)) &
243 	 (ch->unit ? 0x08 : 0x04))) {
244 	pci_write_config(device_get_parent(dev), 0x71,
245 			 reg71 & ~(ch->unit ? 0x04 : 0x08), 1);
246 	return ata_pci_status(dev);
247     }
248     return 0;
249 }
250 
251 static int
252 ata_cmd_setmode(device_t dev, int target, int mode)
253 {
254 	device_t parent = device_get_parent(dev);
255 	struct ata_pci_controller *ctlr = device_get_softc(parent);
256 	struct ata_channel *ch = device_get_softc(dev);
257 	int devno = (ch->unit << 1) + target;
258 	int treg = 0x54 + ((devno < 3) ? (devno << 1) : 7);
259 	int ureg = ch->unit ? 0x7b : 0x73;
260 	int piomode;
261 	uint8_t piotimings[] = { 0xa9, 0x57, 0x44, 0x32, 0x3f, 0x87, 0x32, 0x3f };
262 	uint8_t udmatimings[][2] = { { 0x31,  0xc2 }, { 0x21,  0x82 },
263 				     { 0x11,  0x42 }, { 0x25,  0x8a },
264 				     { 0x15,  0x4a }, { 0x05,  0x0a } };
265 
266 	mode = min(mode, ctlr->chip->max_dma);
267 	if (mode >= ATA_UDMA0) {
268 		u_int8_t umode = pci_read_config(parent, ureg, 1);
269 
270 	        umode &= ~(target == 0 ? 0x35 : 0xca);
271 		umode |= udmatimings[mode & ATA_MODE_MASK][target];
272 		pci_write_config(parent, ureg, umode, 1);
273 		piomode = ATA_PIO4;
274 	} else {
275 		pci_write_config(parent, ureg,
276 			     pci_read_config(parent, ureg, 1) &
277 			     ~(target == 0 ? 0x35 : 0xca), 1);
278 		piomode = mode;
279 	}
280 	pci_write_config(parent, treg, piotimings[ata_mode2idx(piomode)], 1);
281 	return (mode);
282 }
283 
284 static int
285 ata_sii_ch_attach(device_t dev)
286 {
287     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
288     struct ata_channel *ch = device_get_softc(dev);
289     int unit01 = (ch->unit & 1), unit10 = (ch->unit & 2);
290     int i;
291 
292     ata_pci_dmainit(dev);
293 
294     for (i = ATA_DATA; i <= ATA_COMMAND; i++) {
295 	ch->r_io[i].res = ctlr->r_res2;
296 	ch->r_io[i].offset = 0x80 + i + (unit01 << 6) + (unit10 << 8);
297     }
298     ch->r_io[ATA_CONTROL].res = ctlr->r_res2;
299     ch->r_io[ATA_CONTROL].offset = 0x8a + (unit01 << 6) + (unit10 << 8);
300     ch->r_io[ATA_IDX_ADDR].res = ctlr->r_res2;
301     ata_default_registers(dev);
302 
303     ch->r_io[ATA_BMCMD_PORT].res = ctlr->r_res2;
304     ch->r_io[ATA_BMCMD_PORT].offset = 0x00 + (unit01 << 3) + (unit10 << 8);
305     ch->r_io[ATA_BMSTAT_PORT].res = ctlr->r_res2;
306     ch->r_io[ATA_BMSTAT_PORT].offset = 0x02 + (unit01 << 3) + (unit10 << 8);
307     ch->r_io[ATA_BMDTP_PORT].res = ctlr->r_res2;
308     ch->r_io[ATA_BMDTP_PORT].offset = 0x04 + (unit01 << 3) + (unit10 << 8);
309 
310     if (ctlr->chip->max_dma >= ATA_SA150) {
311 	ch->r_io[ATA_SSTATUS].res = ctlr->r_res2;
312 	ch->r_io[ATA_SSTATUS].offset = 0x104 + (unit01 << 7) + (unit10 << 8);
313 	ch->r_io[ATA_SERROR].res = ctlr->r_res2;
314 	ch->r_io[ATA_SERROR].offset = 0x108 + (unit01 << 7) + (unit10 << 8);
315 	ch->r_io[ATA_SCONTROL].res = ctlr->r_res2;
316 	ch->r_io[ATA_SCONTROL].offset = 0x100 + (unit01 << 7) + (unit10 << 8);
317 	ch->flags |= ATA_NO_SLAVE;
318 	ch->flags |= ATA_SATA;
319 
320 	/* enable PHY state change interrupt */
321 	ATA_OUTL(ctlr->r_res2, 0x148 + (unit01 << 7) + (unit10 << 8),(1 << 16));
322     }
323 
324     if (ctlr->chip->cfg2 & SII_BUG) {
325 	/* work around errata in early chips */
326 	ch->dma.boundary = 8192;
327 	ch->dma.segsize = 15 * DEV_BSIZE;
328     }
329 
330     ata_pci_hw(dev);
331     ch->hw.status = ata_sii_status;
332     if (ctlr->chip->cfg2 & SII_SETCLK)
333 	ch->flags |= ATA_CHECKS_CABLE;
334     return 0;
335 }
336 
337 static int
338 ata_sii_ch_detach(device_t dev)
339 {
340 
341     ata_pci_dmafini(dev);
342     return (0);
343 }
344 
345 static int
346 ata_sii_status(device_t dev)
347 {
348     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
349     struct ata_channel *ch = device_get_softc(dev);
350     int offset0 = ((ch->unit & 1) << 3) + ((ch->unit & 2) << 8);
351     int offset1 = ((ch->unit & 1) << 6) + ((ch->unit & 2) << 8);
352 
353     /* do we have any PHY events ? */
354     if (ctlr->chip->max_dma >= ATA_SA150 &&
355 	(ATA_INL(ctlr->r_res2, 0x10 + offset0) & 0x00000010))
356 	ata_sata_phy_check_events(dev);
357 
358     if (ATA_INL(ctlr->r_res2, 0xa0 + offset1) & 0x00000800)
359 	return ata_pci_status(dev);
360     else
361 	return 0;
362 }
363 
364 static void
365 ata_sii_reset(device_t dev)
366 {
367     struct ata_channel *ch = device_get_softc(dev);
368 
369     if (ata_sata_phy_reset(dev, -1, 1))
370 	ata_generic_reset(dev);
371     else
372 	ch->devices = 0;
373 }
374 
375 static int
376 ata_sii_setmode(device_t dev, int target, int mode)
377 {
378 	device_t parent = device_get_parent(dev);
379 	struct ata_pci_controller *ctlr = device_get_softc(parent);
380 	struct ata_channel *ch = device_get_softc(dev);
381 	int rego = (ch->unit << 4) + (target << 1);
382 	int mreg = ch->unit ? 0x84 : 0x80;
383 	int mask = 0x03 << (target << 2);
384 	int mval = pci_read_config(parent, mreg, 1) & ~mask;
385 	int piomode;
386 	u_int8_t preg = 0xa4 + rego;
387 	u_int8_t dreg = 0xa8 + rego;
388 	u_int8_t ureg = 0xac + rego;
389 	u_int16_t piotimings[] = { 0x328a, 0x2283, 0x1104, 0x10c3, 0x10c1 };
390 	u_int16_t dmatimings[] = { 0x2208, 0x10c2, 0x10c1 };
391 	u_int8_t udmatimings[] = { 0xf, 0xb, 0x7, 0x5, 0x3, 0x2, 0x1 };
392 
393 	mode = min(mode, ctlr->chip->max_dma);
394 
395 	if (ctlr->chip->cfg2 & SII_SETCLK) {
396 	    if (ata_dma_check_80pin && mode > ATA_UDMA2 &&
397 		(pci_read_config(parent, 0x79, 1) &
398 				 (ch->unit ? 0x02 : 0x01))) {
399 		ata_print_cable(dev, "controller");
400 		mode = ATA_UDMA2;
401 	    }
402 	}
403 	if (mode >= ATA_UDMA0) {
404 		pci_write_config(parent, mreg,
405 			 mval | (0x03 << (target << 2)), 1);
406 		pci_write_config(parent, ureg,
407 			 (pci_read_config(parent, ureg, 1) & ~0x3f) |
408 			 udmatimings[mode & ATA_MODE_MASK], 1);
409 		piomode = ATA_PIO4;
410 	} else if (mode >= ATA_WDMA0) {
411 		pci_write_config(parent, mreg,
412 			 mval | (0x02 << (target << 2)), 1);
413 		pci_write_config(parent, dreg, dmatimings[mode & ATA_MODE_MASK], 2);
414 		piomode = (mode == ATA_WDMA0) ? ATA_PIO0 :
415 		    (mode == ATA_WDMA1) ? ATA_PIO3 : ATA_PIO4;
416 	} else {
417 		pci_write_config(parent, mreg,
418 			 mval | (0x01 << (target << 2)), 1);
419 		piomode = mode;
420 	}
421 	pci_write_config(parent, preg, piotimings[ata_mode2idx(piomode)], 2);
422 	return (mode);
423 }
424 
425 
426 struct ata_siiprb_dma_prdentry {
427     u_int64_t addr;
428     u_int32_t count;
429     u_int32_t control;
430 } __packed;
431 
432 #define ATA_SIIPRB_DMA_ENTRIES		129
433 struct ata_siiprb_ata_command {
434     struct ata_siiprb_dma_prdentry prd[ATA_SIIPRB_DMA_ENTRIES];
435 } __packed;
436 
437 struct ata_siiprb_atapi_command {
438     u_int8_t ccb[16];
439     struct ata_siiprb_dma_prdentry prd[ATA_SIIPRB_DMA_ENTRIES];
440 } __packed;
441 
442 struct ata_siiprb_command {
443     u_int16_t control;
444     u_int16_t protocol_override;
445     u_int32_t transfer_count;
446     u_int8_t fis[24];
447     union {
448 	struct ata_siiprb_ata_command ata;
449 	struct ata_siiprb_atapi_command atapi;
450     } u;
451 } __packed;
452 
453 static int
454 ata_siiprb_ch_attach(device_t dev)
455 {
456     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
457     struct ata_channel *ch = device_get_softc(dev);
458     int offset = ch->unit * 0x2000;
459 
460     ata_siiprb_dmainit(dev);
461 
462     /* set the SATA resources */
463     ch->r_io[ATA_SSTATUS].res = ctlr->r_res2;
464     ch->r_io[ATA_SSTATUS].offset = 0x1f04 + offset;
465     ch->r_io[ATA_SERROR].res = ctlr->r_res2;
466     ch->r_io[ATA_SERROR].offset = 0x1f08 + offset;
467     ch->r_io[ATA_SCONTROL].res = ctlr->r_res2;
468     ch->r_io[ATA_SCONTROL].offset = 0x1f00 + offset;
469     ch->r_io[ATA_SACTIVE].res = ctlr->r_res2;
470     ch->r_io[ATA_SACTIVE].offset = 0x1f0c + offset;
471 
472     ch->hw.status = ata_siiprb_status;
473     ch->hw.begin_transaction = ata_siiprb_begin_transaction;
474     ch->hw.end_transaction = ata_siiprb_end_transaction;
475     ch->hw.command = NULL;	/* not used here */
476     ch->hw.softreset = ata_siiprb_softreset;
477     ch->hw.pm_read = ata_siiprb_pm_read;
478     ch->hw.pm_write = ata_siiprb_pm_write;
479     ch->flags |= ATA_NO_SLAVE;
480     ch->flags |= ATA_SATA;
481     return 0;
482 }
483 
484 static int
485 ata_siiprb_ch_detach(device_t dev)
486 {
487 
488     ata_dmafini(dev);
489     return 0;
490 }
491 
492 static int
493 ata_siiprb_status(device_t dev)
494 {
495     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
496     struct ata_channel *ch = device_get_softc(dev);
497     u_int32_t action = ATA_INL(ctlr->r_res1, 0x0044);
498     int offset = ch->unit * 0x2000;
499 
500     if (action & (1 << ch->unit)) {
501 	u_int32_t istatus = ATA_INL(ctlr->r_res2, 0x1008 + offset);
502 
503 	/* do we have any PHY events ? */
504 	ata_sata_phy_check_events(dev);
505 
506 	/* clear interrupt(s) */
507 	ATA_OUTL(ctlr->r_res2, 0x1008 + offset, istatus);
508 
509 	/* do we have any device action ? */
510 	return (istatus & 0x00000003);
511     }
512     return 0;
513 }
514 
515 static int
516 ata_siiprb_begin_transaction(struct ata_request *request)
517 {
518     struct ata_pci_controller *ctlr=device_get_softc(device_get_parent(request->parent));
519     struct ata_channel *ch = device_get_softc(request->parent);
520     struct ata_siiprb_command *prb;
521     struct ata_siiprb_dma_prdentry *prd;
522     int offset = ch->unit * 0x2000;
523     u_int64_t prb_bus;
524 
525     /* SOS XXX */
526     if (request->u.ata.command == ATA_DEVICE_RESET) {
527         request->result = 0;
528         return ATA_OP_FINISHED;
529     }
530 
531     /* get a piece of the workspace for this request */
532     prb = (struct ata_siiprb_command *)ch->dma.work;
533 
534     /* clear the prb structure */
535     bzero(prb, sizeof(struct ata_siiprb_command));
536 
537     /* setup the FIS for this request */
538     if (!ata_request2fis_h2d(request, &prb->fis[0])) {
539         device_printf(request->parent, "setting up SATA FIS failed\n");
540         request->result = EIO;
541         return ATA_OP_FINISHED;
542     }
543 
544     /* setup transfer type */
545     if (request->flags & ATA_R_ATAPI) {
546 	bcopy(request->u.atapi.ccb, prb->u.atapi.ccb, 16);
547 	if (request->flags & ATA_R_ATAPI16)
548 	    ATA_OUTL(ctlr->r_res2, 0x1000 + offset, 0x00000020);
549 	else
550 	    ATA_OUTL(ctlr->r_res2, 0x1004 + offset, 0x00000020);
551 	if (request->flags & ATA_R_READ)
552 	    prb->control = htole16(0x0010);
553 	if (request->flags & ATA_R_WRITE)
554 	    prb->control = htole16(0x0020);
555 	prd = &prb->u.atapi.prd[0];
556     }
557     else
558 	prd = &prb->u.ata.prd[0];
559 
560     /* if request moves data setup and load SG list */
561     if (request->flags & (ATA_R_READ | ATA_R_WRITE)) {
562 	if (ch->dma.load(request, prd, NULL)) {
563 	    device_printf(request->parent, "setting up DMA failed\n");
564 	    request->result = EIO;
565 	    return ATA_OP_FINISHED;
566 	}
567     }
568 
569     /* activate the prb */
570     prb_bus = ch->dma.work_bus;
571     ATA_OUTL(ctlr->r_res2, 0x1c00 + offset, prb_bus);
572     ATA_OUTL(ctlr->r_res2, 0x1c04 + offset, prb_bus>>32);
573 
574     /* start the timeout */
575     callout_reset(&request->callout, request->timeout * hz,
576                   (timeout_t*)ata_timeout, request);
577     return ATA_OP_CONTINUES;
578 }
579 
580 static int
581 ata_siiprb_end_transaction(struct ata_request *request)
582 {
583     struct ata_pci_controller *ctlr=device_get_softc(device_get_parent(request->parent));
584     struct ata_channel *ch = device_get_softc(request->parent);
585     struct ata_siiprb_command *prb;
586     int offset = ch->unit * 0x2000;
587     int error, timeout;
588 
589     /* kill the timeout */
590     callout_stop(&request->callout);
591 
592     prb = (struct ata_siiprb_command *)
593 	((u_int8_t *)rman_get_virtual(ctlr->r_res2) + offset);
594 
595     /* any controller errors flagged ? */
596     if ((error = ATA_INL(ctlr->r_res2, 0x1024 + offset))) {
597 	if (bootverbose)
598 	    printf("ata_siiprb_end_transaction %s error=%08x\n",
599 		   ata_cmd2str(request), error);
600 
601 	/* if device error status get details */
602 	if (error == 1 || error == 2) {
603 	    request->status = prb->fis[2];
604 	    if (request->status & ATA_S_ERROR)
605 		request->error = prb->fis[3];
606 	}
607 
608  	/* SOS XXX handle other controller errors here */
609 
610 	/* initialize port */
611 	ATA_OUTL(ctlr->r_res2, 0x1000 + offset, 0x00000004);
612 
613 	/* poll for port ready */
614 	for (timeout = 0; timeout < 1000; timeout++) {
615 	    DELAY(1000);
616             if (ATA_INL(ctlr->r_res2, 0x1008 + offset) & 0x00040000)
617         	break;
618 	}
619 	if (bootverbose) {
620 	    if (timeout >= 1000)
621 		device_printf(ch->dev, "port initialize timeout\n");
622 	    else
623 		device_printf(ch->dev, "port initialize time=%dms\n", timeout);
624 	}
625     }
626 
627     /* on control commands read back registers to the request struct */
628     if (request->flags & ATA_R_CONTROL) {
629 	request->u.ata.count = prb->fis[12] | ((u_int16_t)prb->fis[13] << 8);
630 	request->u.ata.lba = prb->fis[4] | ((u_int64_t)prb->fis[5] << 8) |
631 			     ((u_int64_t)prb->fis[6] << 16);
632 	if (request->flags & ATA_R_48BIT)
633 	    request->u.ata.lba |= ((u_int64_t)prb->fis[8] << 24) |
634 				  ((u_int64_t)prb->fis[9] << 32) |
635 				  ((u_int64_t)prb->fis[10] << 40);
636 	else
637 	    request->u.ata.lba |= ((u_int64_t)(prb->fis[7] & 0x0f) << 24);
638     }
639 
640     /* update progress */
641     if (!(request->status & ATA_S_ERROR) && !(request->flags & ATA_R_TIMEOUT)) {
642 	if (request->flags & ATA_R_READ)
643 	    request->donecount = prb->transfer_count;
644 	else
645 	    request->donecount = request->bytecount;
646     }
647 
648     /* release SG list etc */
649     ch->dma.unload(request);
650 
651     return ATA_OP_FINISHED;
652 }
653 
654 static int
655 ata_siiprb_issue_cmd(device_t dev)
656 {
657     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
658     struct ata_channel *ch = device_get_softc(dev);
659     u_int64_t prb_bus = ch->dma.work_bus;
660     u_int32_t status;
661     int offset = ch->unit * 0x2000;
662     int timeout;
663 
664     /* issue command to chip */
665     ATA_OUTL(ctlr->r_res2, 0x1c00 + offset, prb_bus);
666     ATA_OUTL(ctlr->r_res2, 0x1c04 + offset, prb_bus >> 32);
667 
668     /* poll for command finished */
669     for (timeout = 0; timeout < 10000; timeout++) {
670         DELAY(1000);
671         if ((status = ATA_INL(ctlr->r_res2, 0x1008 + offset)) & 0x00010000)
672             break;
673     }
674     // SOS XXX ATA_OUTL(ctlr->r_res2, 0x1008 + offset, 0x00010000);
675     ATA_OUTL(ctlr->r_res2, 0x1008 + offset, 0x08ff08ff);
676 
677     if (timeout >= 1000)
678 	return EIO;
679 
680     if (bootverbose)
681 	device_printf(dev, "siiprb_issue_cmd time=%dms status=%08x\n",
682 		      timeout, status);
683     return 0;
684 }
685 
686 static int
687 ata_siiprb_pm_read(device_t dev, int port, int reg, u_int32_t *result)
688 {
689     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
690     struct ata_channel *ch = device_get_softc(dev);
691     struct ata_siiprb_command *prb = (struct ata_siiprb_command *)ch->dma.work;
692     int offset = ch->unit * 0x2000;
693 
694     bzero(prb, sizeof(struct ata_siiprb_command));
695     prb->fis[0] = 0x27;	/* host to device */
696     prb->fis[1] = 0x8f;	/* command FIS to PM port */
697     prb->fis[2] = ATA_READ_PM;
698     prb->fis[3] = reg;
699     prb->fis[7] = port;
700     if (ata_siiprb_issue_cmd(dev)) {
701 	device_printf(dev, "error reading PM port\n");
702 	return EIO;
703     }
704     prb = (struct ata_siiprb_command *)
705 	((u_int8_t *)rman_get_virtual(ctlr->r_res2) + offset);
706     *result = prb->fis[12]|(prb->fis[4]<<8)|(prb->fis[5]<<16)|(prb->fis[6]<<24);
707     return 0;
708 }
709 
710 static int
711 ata_siiprb_pm_write(device_t dev, int port, int reg, u_int32_t value)
712 {
713     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
714     struct ata_channel *ch = device_get_softc(dev);
715     struct ata_siiprb_command *prb = (struct ata_siiprb_command *)ch->dma.work;
716     int offset = ch->unit * 0x2000;
717 
718     bzero(prb, sizeof(struct ata_siiprb_command));
719     prb->fis[0] = 0x27;	/* host to device */
720     prb->fis[1] = 0x8f;	/* command FIS to PM port */
721     prb->fis[2] = ATA_WRITE_PM;
722     prb->fis[3] = reg;
723     prb->fis[7] = port;
724     prb->fis[12] = value & 0xff;
725     prb->fis[4] = (value >> 8) & 0xff;
726     prb->fis[5] = (value >> 16) & 0xff;
727     prb->fis[6] = (value >> 24) & 0xff;
728     if (ata_siiprb_issue_cmd(dev)) {
729 	device_printf(dev, "error writing PM port\n");
730 	return ATA_E_ABORT;
731     }
732     prb = (struct ata_siiprb_command *)
733 	((u_int8_t *)rman_get_virtual(ctlr->r_res2) + offset);
734     return prb->fis[3];
735 }
736 
737 static u_int32_t
738 ata_siiprb_softreset(device_t dev, int port)
739 {
740     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
741     struct ata_channel *ch = device_get_softc(dev);
742     struct ata_siiprb_command *prb = (struct ata_siiprb_command *)ch->dma.work;
743     u_int32_t signature;
744     int offset = ch->unit * 0x2000;
745 
746     /* setup the workspace for a soft reset command */
747     bzero(prb, sizeof(struct ata_siiprb_command));
748     prb->control = htole16(0x0080);
749     prb->fis[1] = port & 0x0f;
750 
751     /* issue soft reset */
752     if (ata_siiprb_issue_cmd(dev))
753 	return -1;
754 
755     ata_udelay(150000);
756 
757     /* get possible signature */
758     prb = (struct ata_siiprb_command *)
759 	((u_int8_t *)rman_get_virtual(ctlr->r_res2) + offset);
760     signature=prb->fis[12]|(prb->fis[4]<<8)|(prb->fis[5]<<16)|(prb->fis[6]<<24);
761 
762     /* clear error bits/interrupt */
763     ATA_IDX_OUTL(ch, ATA_SERROR, 0xffffffff);
764 
765     return signature;
766 }
767 
768 static void
769 ata_siiprb_reset(device_t dev)
770 {
771     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
772     struct ata_channel *ch = device_get_softc(dev);
773     int offset = ch->unit * 0x2000;
774     u_int32_t status, signature;
775     int timeout;
776 
777     /* disable interrupts */
778     ATA_OUTL(ctlr->r_res2, 0x1014 + offset, 0x000000ff);
779 
780     /* reset channel HW */
781     ATA_OUTL(ctlr->r_res2, 0x1000 + offset, 0x00000001);
782     DELAY(1000);
783     ATA_OUTL(ctlr->r_res2, 0x1004 + offset, 0x00000001);
784     DELAY(10000);
785 
786     /* poll for channel ready */
787     for (timeout = 0; timeout < 1000; timeout++) {
788         if ((status = ATA_INL(ctlr->r_res2, 0x1008 + offset)) & 0x00040000)
789             break;
790         DELAY(1000);
791     }
792 
793     if (bootverbose) {
794 	if (timeout >= 1000)
795 	    device_printf(dev, "channel HW reset timeout\n");
796 	else
797 	    device_printf(dev, "channel HW reset time=%dms\n", timeout);
798     }
799 
800     /* reset phy */
801     if (!ata_sata_phy_reset(dev, -1, 1)) {
802 	if (bootverbose)
803 	    device_printf(dev, "phy reset found no device\n");
804 	ch->devices = 0;
805 	goto finish;
806     }
807 
808     /* issue soft reset */
809     signature = ata_siiprb_softreset(dev, ATA_PM);
810     if (bootverbose)
811 	device_printf(dev, "SIGNATURE=%08x\n", signature);
812 
813     /* figure out whats there */
814     switch (signature >> 16) {
815     case 0x0000:
816 	ch->devices = ATA_ATA_MASTER;
817 	break;
818     case 0x9669:
819 	ch->devices = ATA_PORTMULTIPLIER;
820 	ATA_OUTL(ctlr->r_res2, 0x1000 + offset, 0x2000); /* enable PM support */
821 	//SOS XXX need to clear all PM status and interrupts!!!!
822 	ata_pm_identify(dev);
823 	break;
824     case 0xeb14:
825 	ch->devices = ATA_ATAPI_MASTER;
826 	break;
827     default:
828 	ch->devices = 0;
829     }
830     if (bootverbose)
831         device_printf(dev, "siiprb_reset devices=%08x\n", ch->devices);
832 
833 finish:
834     /* clear interrupt(s) */
835     ATA_OUTL(ctlr->r_res2, 0x1008 + offset, 0x000008ff);
836 
837     /* require explicit interrupt ack */
838     ATA_OUTL(ctlr->r_res2, 0x1000 + offset, 0x00000008);
839 
840     /* 64bit mode */
841     ATA_OUTL(ctlr->r_res2, 0x1004 + offset, 0x00000400);
842 
843     /* enable interrupts wanted */
844     ATA_OUTL(ctlr->r_res2, 0x1010 + offset, 0x000000ff);
845 }
846 
847 static void
848 ata_siiprb_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
849 {
850     struct ata_dmasetprd_args *args = xsc;
851     struct ata_siiprb_dma_prdentry *prd = args->dmatab;
852     int i;
853 
854     if ((args->error = error))
855 	return;
856 
857     for (i = 0; i < nsegs; i++) {
858 	prd[i].addr = htole64(segs[i].ds_addr);
859 	prd[i].count = htole32(segs[i].ds_len);
860     }
861     prd[i - 1].control = htole32(ATA_DMA_EOT);
862     KASSERT(nsegs <= ATA_SIIPRB_DMA_ENTRIES,("too many DMA segment entries\n"));
863     args->nsegs = nsegs;
864 }
865 
866 static void
867 ata_siiprb_dmainit(device_t dev)
868 {
869     struct ata_channel *ch = device_get_softc(dev);
870 
871     ata_dmainit(dev);
872     /* note start and stop are not used here */
873     ch->dma.setprd = ata_siiprb_dmasetprd;
874     ch->dma.max_address = BUS_SPACE_MAXADDR;
875     ch->dma.max_iosize = (ATA_SIIPRB_DMA_ENTRIES - 1) * PAGE_SIZE;
876 }
877 
878 ATA_DECLARE_DRIVER(ata_sii);
879