1 /*-
2  * Copyright (c) 1998 - 2008 Søren 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 /* local prototypes */
28 static int ata_cmd_allocate(device_t dev);
29 static int ata_cmd_status(device_t dev);
30 static void ata_cmd_setmode(device_t dev, int mode);
31 static int ata_sii_allocate(device_t dev);
32 static int ata_sii_status(device_t dev);
33 static void ata_sii_reset(device_t dev);
34 static void ata_sii_setmode(device_t dev, int mode);
35 static int ata_siiprb_allocate(device_t dev);
36 static int ata_siiprb_status(device_t dev);
37 static int ata_siiprb_begin_transaction(struct ata_request *request);
38 static int ata_siiprb_end_transaction(struct ata_request *request);
39 static u_int32_t ata_siiprb_softreset(device_t dev, int port);
40 static void ata_siiprb_reset(device_t dev);
41 static void ata_siiprb_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error);
42 static void ata_siiprb_dmainit(device_t dev);
43 
44 /* misc defines */
45 #undef SII_MEMIO
46 #define SII_MEMIO	1
47 #define SII_PRBIO	2
48 #define SII_INTR	0x01
49 #define SII_SETCLK	0x02
50 #define SII_BUG		0x04
51 #define SII_4CH		0x08
52 
53 /*
54  * Silicon Image Inc. (SiI) (former CMD) chipset support functions
55  */
56 int
57 ata_sii_ident(device_t dev)
58 {
59     struct ata_pci_controller *ctlr = device_get_softc(dev);
60     static const struct ata_chip_id ids[] =
61     {{ ATA_SII3114,   0x00, SII_MEMIO, SII_4CH,    ATA_SA150, "SiI 3114" },
62      { ATA_SII3512,   0x02, SII_MEMIO, 0,          ATA_SA150, "SiI 3512" },
63      { ATA_SII3112,   0x02, SII_MEMIO, 0,          ATA_SA150, "SiI 3112" },
64      { ATA_SII3112_1, 0x02, SII_MEMIO, 0,          ATA_SA150, "SiI 3112" },
65      { ATA_SII3512,   0x00, SII_MEMIO, SII_BUG,    ATA_SA150, "SiI 3512" },
66      { ATA_SII3112,   0x00, SII_MEMIO, SII_BUG,    ATA_SA150, "SiI 3112" },
67      { ATA_SII3112_1, 0x00, SII_MEMIO, SII_BUG,    ATA_SA150, "SiI 3112" },
68      { ATA_SII3124,   0x00, SII_PRBIO, SII_4CH,    ATA_SA300, "SiI 3124" },
69      { ATA_SII3132,   0x00, SII_PRBIO, 0,          ATA_SA300, "SiI 3132" },
70      { ATA_SII3132_1, 0x00, SII_PRBIO, 0,          ATA_SA300, "SiI 3132" },
71      { ATA_SII3132_2, 0x00, SII_PRBIO, 0,          ATA_SA300, "SiI 3132" },
72      { ATA_SII0680,   0x00, SII_MEMIO, SII_SETCLK, ATA_UDMA6, "SiI 0680" },
73      { ATA_CMD649,    0x00, 0,         SII_INTR,   ATA_UDMA5, "CMD 649" },
74      { ATA_CMD648,    0x00, 0,         SII_INTR,   ATA_UDMA4, "CMD 648" },
75      { ATA_CMD646,    0x07, 0,         0,          ATA_UDMA2, "CMD 646U2" },
76      { ATA_CMD646,    0x00, 0,         0,          ATA_WDMA2, "CMD 646" },
77      { 0, 0, 0, 0, 0, 0}};
78 
79     if (pci_get_vendor(dev) != ATA_SILICON_IMAGE_ID)
80 	return ENXIO;
81 
82     if (!(ctlr->chip = ata_match_chip(dev, ids)))
83 	return ENXIO;
84 
85     ata_set_desc(dev);
86     ctlr->chipinit = ata_sii_chipinit;
87     return 0;
88 }
89 
90 static int
91 ata_sii_chipinit(device_t dev)
92 {
93     struct ata_pci_controller *ctlr = device_get_softc(dev);
94 
95     if (ata_setup_interrupt(dev, ata_generic_intr))
96 	return ENXIO;
97 
98     switch (ctlr->chip->cfg1) {
99     case SII_PRBIO:
100 	ctlr->r_type1 = SYS_RES_MEMORY;
101 	ctlr->r_rid1 = PCIR_BAR(0);
102 	if (!(ctlr->r_res1 = bus_alloc_resource_any(dev, ctlr->r_type1,
103 						    &ctlr->r_rid1, RF_ACTIVE))){
104 	    ata_teardown_interrupt(dev);
105 	    return ENXIO;
106 	}
107 
108 	ctlr->r_rid2 = PCIR_BAR(2);
109 	ctlr->r_type2 = SYS_RES_MEMORY;
110 	if (!(ctlr->r_res2 = bus_alloc_resource_any(dev, ctlr->r_type2,
111 						    &ctlr->r_rid2, RF_ACTIVE))){
112 	    bus_release_resource(dev, ctlr->r_type1, ctlr->r_rid1,ctlr->r_res1);
113 	    ata_teardown_interrupt(dev);
114 	    return ENXIO;
115 	}
116 	ctlr->allocate = ata_siiprb_allocate;
117 	ctlr->reset = ata_siiprb_reset;
118 	ctlr->dmainit = ata_siiprb_dmainit;
119 	ctlr->setmode = ata_sata_setmode;
120 	ctlr->channels = (ctlr->chip->cfg2 == SII_4CH) ? 4 : 2;
121 
122 	/* reset controller */
123 	ATA_OUTL(ctlr->r_res1, 0x0040, 0x80000000);
124 	DELAY(10000);
125 	ATA_OUTL(ctlr->r_res1, 0x0040, 0x0000000f);
126 
127 	/* enable PCI interrupt */
128 	pci_write_config(dev, PCIR_COMMAND,
129 			 pci_read_config(dev, PCIR_COMMAND, 2) & ~0x0400, 2);
130 	break;
131 
132     case SII_MEMIO:
133 	ctlr->r_type2 = SYS_RES_MEMORY;
134 	ctlr->r_rid2 = PCIR_BAR(5);
135 	if (!(ctlr->r_res2 = bus_alloc_resource_any(dev, ctlr->r_type2,
136 						    &ctlr->r_rid2, RF_ACTIVE))){
137 	    if (ctlr->chip->chipid != ATA_SII0680 ||
138 			    (pci_read_config(dev, 0x8a, 1) & 1)) {
139 		ata_teardown_interrupt(dev);
140 		return ENXIO;
141 	    }
142 	}
143 
144 	if (ctlr->chip->cfg2 & SII_SETCLK) {
145 	    if ((pci_read_config(dev, 0x8a, 1) & 0x30) != 0x10)
146 		pci_write_config(dev, 0x8a,
147 				 (pci_read_config(dev, 0x8a, 1) & 0xcf)|0x10,1);
148 	    if ((pci_read_config(dev, 0x8a, 1) & 0x30) != 0x10)
149 		device_printf(dev, "%s could not set ATA133 clock\n",
150 			      ctlr->chip->text);
151 	}
152 
153 	/* if we have 4 channels enable the second set */
154 	if (ctlr->chip->cfg2 & SII_4CH) {
155 	    ATA_OUTL(ctlr->r_res2, 0x0200, 0x00000002);
156 	    ctlr->channels = 4;
157 	}
158 
159 	/* dont block interrupts from any channel */
160 	pci_write_config(dev, 0x48,
161 			 (pci_read_config(dev, 0x48, 4) & ~0x03c00000), 4);
162 
163 	/* enable PCI interrupt as BIOS might not */
164 	pci_write_config(dev, 0x8a, (pci_read_config(dev, 0x8a, 1) & 0x3f), 1);
165 
166 	if (ctlr->r_res2)
167 	    ctlr->allocate = ata_sii_allocate;
168 
169 	if (ctlr->chip->max_dma >= ATA_SA150) {
170 	    ctlr->reset = ata_sii_reset;
171 	    ctlr->setmode = ata_sata_setmode;
172 	}
173 	else
174 	    ctlr->setmode = ata_sii_setmode;
175 	break;
176 
177     default:
178 	if ((pci_read_config(dev, 0x51, 1) & 0x08) != 0x08) {
179 	    device_printf(dev, "HW has secondary channel disabled\n");
180 	    ctlr->channels = 1;
181 	}
182 
183 	/* enable interrupt as BIOS might not */
184 	pci_write_config(dev, 0x71, 0x01, 1);
185 
186 	ctlr->allocate = ata_cmd_allocate;
187 	ctlr->setmode = ata_cmd_setmode;
188 	break;
189     }
190     return 0;
191 }
192 
193 static int
194 ata_cmd_allocate(device_t dev)
195 {
196     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
197     struct ata_channel *ch = device_get_softc(dev);
198 
199     /* setup the usual register normal pci style */
200     if (ata_pci_allocate(dev))
201 	return ENXIO;
202 
203     if (ctlr->chip->cfg2 & SII_INTR)
204 	ch->hw.status = ata_cmd_status;
205 
206     return 0;
207 }
208 
209 static int
210 ata_cmd_status(device_t dev)
211 {
212     struct ata_channel *ch = device_get_softc(dev);
213     u_int8_t reg71;
214 
215     if (((reg71 = pci_read_config(device_get_parent(ch->dev), 0x71, 1)) &
216 	 (ch->unit ? 0x08 : 0x04))) {
217 	pci_write_config(device_get_parent(ch->dev), 0x71,
218 			 reg71 & ~(ch->unit ? 0x04 : 0x08), 1);
219 	return ata_pci_status(dev);
220     }
221     return 0;
222 }
223 
224 static void
225 ata_cmd_setmode(device_t dev, int mode)
226 {
227     device_t gparent = GRANDPARENT(dev);
228     struct ata_pci_controller *ctlr = device_get_softc(gparent);
229     struct ata_channel *ch = device_get_softc(device_get_parent(dev));
230     struct ata_device *atadev = device_get_softc(dev);
231     int devno = (ch->unit << 1) + atadev->unit;
232     int error;
233 	int treg = 0x54 + ((devno < 3) ? (devno << 1) : 7);
234 	int ureg = ch->unit ? 0x7b : 0x73;
235 	static const uint8_t piotimings[] =
236 	    { 0xa9, 0x57, 0x44, 0x32, 0x3f };
237 	static const uint8_t dmatimings[] = { 0x87, 0x32, 0x3f };
238 	static const uint8_t udmatimings[][2] =
239 	    { { 0x31,  0xc2 }, { 0x21,  0x82 }, { 0x11,  0x42 },
240 	      { 0x25,  0x8a }, { 0x15,  0x4a }, { 0x05,  0x0a } };
241 
242     mode = ata_limit_mode(dev, mode, ctlr->chip->max_dma);
243 
244     mode = ata_check_80pin(dev, mode);
245 
246     error = ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_SETXFER, 0, mode);
247 
248     if (bootverbose)
249 	device_printf(dev, "%ssetting %s on %s chip\n",
250 		      (error) ? "FAILURE " : "",
251 		      ata_mode2str(mode), ctlr->chip->text);
252     if (!error) {
253 	if (mode >= ATA_UDMA0) {
254 	    u_int8_t umode = pci_read_config(gparent, ureg, 1);
255 
256 	    umode &= ~(atadev->unit == ATA_MASTER ? 0x35 : 0xca);
257 	    umode |= udmatimings[mode & ATA_MODE_MASK][atadev->unit];
258 	    pci_write_config(gparent, ureg, umode, 1);
259 	}
260 	else if (mode >= ATA_WDMA0) {
261 	    pci_write_config(gparent, treg, dmatimings[mode & ATA_MODE_MASK],1);
262 	    pci_write_config(gparent, ureg,
263 			     pci_read_config(gparent, ureg, 1) &
264 			     ~(atadev->unit == ATA_MASTER ? 0x35 : 0xca), 1);
265 	}
266 	else {
267 	    pci_write_config(gparent, treg,
268 			     piotimings[(mode & ATA_MODE_MASK) - ATA_PIO0], 1);
269 	    pci_write_config(gparent, ureg,
270 			     pci_read_config(gparent, ureg, 1) &
271 			     ~(atadev->unit == ATA_MASTER ? 0x35 : 0xca), 1);
272 	}
273 	atadev->mode = mode;
274     }
275 }
276 
277 static int
278 ata_sii_allocate(device_t dev)
279 {
280     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
281     struct ata_channel *ch = device_get_softc(dev);
282     int unit01 = (ch->unit & 1), unit10 = (ch->unit & 2);
283     int i;
284 
285     for (i = ATA_DATA; i <= ATA_COMMAND; i++) {
286 	ch->r_io[i].res = ctlr->r_res2;
287 	ch->r_io[i].offset = 0x80 + i + (unit01 << 6) + (unit10 << 8);
288     }
289     ch->r_io[ATA_CONTROL].res = ctlr->r_res2;
290     ch->r_io[ATA_CONTROL].offset = 0x8a + (unit01 << 6) + (unit10 << 8);
291     ch->r_io[ATA_IDX_ADDR].res = ctlr->r_res2;
292     ata_default_registers(dev);
293 
294     ch->r_io[ATA_BMCMD_PORT].res = ctlr->r_res2;
295     ch->r_io[ATA_BMCMD_PORT].offset = 0x00 + (unit01 << 3) + (unit10 << 8);
296     ch->r_io[ATA_BMSTAT_PORT].res = ctlr->r_res2;
297     ch->r_io[ATA_BMSTAT_PORT].offset = 0x02 + (unit01 << 3) + (unit10 << 8);
298     ch->r_io[ATA_BMDTP_PORT].res = ctlr->r_res2;
299     ch->r_io[ATA_BMDTP_PORT].offset = 0x04 + (unit01 << 3) + (unit10 << 8);
300 
301     if (ctlr->chip->max_dma >= ATA_SA150) {
302 	ch->r_io[ATA_SSTATUS].res = ctlr->r_res2;
303 	ch->r_io[ATA_SSTATUS].offset = 0x104 + (unit01 << 7) + (unit10 << 8);
304 	ch->r_io[ATA_SERROR].res = ctlr->r_res2;
305 	ch->r_io[ATA_SERROR].offset = 0x108 + (unit01 << 7) + (unit10 << 8);
306 	ch->r_io[ATA_SCONTROL].res = ctlr->r_res2;
307 	ch->r_io[ATA_SCONTROL].offset = 0x100 + (unit01 << 7) + (unit10 << 8);
308 	ch->flags |= ATA_NO_SLAVE;
309 
310 	/* enable PHY state change interrupt */
311 	ATA_OUTL(ctlr->r_res2, 0x148 + (unit01 << 7) + (unit10 << 8),(1 << 16));
312     }
313 
314     if ((ctlr->chip->cfg2 & SII_BUG) && ch->dma) {
315 	/* work around errata in early chips */
316 	ch->dma->boundary = 8192;
317 	ch->dma->segsize = 15 * DEV_BSIZE;
318     }
319 
320     ata_pci_hw(dev);
321     ch->hw.status = ata_sii_status;
322     return 0;
323 }
324 
325 static int
326 ata_sii_status(device_t dev)
327 {
328     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
329     struct ata_channel *ch = device_get_softc(dev);
330     int offset0 = ((ch->unit & 1) << 3) + ((ch->unit & 2) << 8);
331     int offset1 = ((ch->unit & 1) << 6) + ((ch->unit & 2) << 8);
332 
333     /* do we have any PHY events ? */
334     if (ctlr->chip->max_dma >= ATA_SA150 &&
335 	(ATA_INL(ctlr->r_res2, 0x10 + offset0) & 0x00000010))
336 	ata_sata_phy_check_events(dev);
337 
338     if (ATA_INL(ctlr->r_res2, 0xa0 + offset1) & 0x00000800)
339 	return ata_pci_status(dev);
340     else
341 	return 0;
342 }
343 
344 static void
345 ata_sii_reset(device_t dev)
346 {
347     if (ata_sata_phy_reset(dev))
348 	ata_generic_reset(dev);
349 }
350 
351 static void
352 ata_sii_setmode(device_t dev, int mode)
353 {
354 	device_t gparent = GRANDPARENT(dev);
355 	struct ata_pci_controller *ctlr = device_get_softc(gparent);
356 	struct ata_channel *ch = device_get_softc(device_get_parent(dev));
357 	struct ata_device *atadev = device_get_softc(dev);
358 	int rego = (ch->unit << 4) + (atadev->unit << 1);
359 	int mreg = ch->unit ? 0x84 : 0x80;
360 	int mask = 0x03 << (atadev->unit << 2);
361 	int mval = pci_read_config(gparent, mreg, 1) & ~mask;
362 	int error;
363 	u_int8_t preg = 0xa4 + rego;
364 	u_int8_t dreg = 0xa8 + rego;
365 	u_int8_t ureg = 0xac + rego;
366 	static const uint16_t piotimings[] =
367 	    { 0x328a, 0x2283, 0x1104, 0x10c3, 0x10c1 };
368 	static const uint16_t dmatimings[] = { 0x2208, 0x10c2, 0x10c1 };
369 	static const uint8_t udmatimings[] =
370 	    { 0xf, 0xb, 0x7, 0x5, 0x3, 0x2, 0x1 };
371 
372     mode = ata_limit_mode(dev, mode, ctlr->chip->max_dma);
373 
374     if (ctlr->chip->cfg2 & SII_SETCLK) {
375 	if (mode > ATA_UDMA2 && (pci_read_config(gparent, 0x79, 1) &
376 				 (ch->unit ? 0x02 : 0x01))) {
377 	    ata_print_cable(dev, "controller");
378 	    mode = ATA_UDMA2;
379 	}
380     }
381     else
382 	mode = ata_check_80pin(dev, mode);
383 
384     error = ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_SETXFER, 0, mode);
385 
386     if (bootverbose)
387 	device_printf(dev, "%ssetting %s on %s chip\n",
388 		      (error) ? "FAILURE " : "",
389 		      ata_mode2str(mode), ctlr->chip->text);
390     if (error)
391 	return;
392 
393     if (mode >= ATA_UDMA0) {
394 	pci_write_config(gparent, mreg,
395 			 mval | (0x03 << (atadev->unit << 2)), 1);
396 	pci_write_config(gparent, ureg,
397 			 (pci_read_config(gparent, ureg, 1) & ~0x3f) |
398 			 udmatimings[mode & ATA_MODE_MASK], 1);
399 
400     }
401     else if (mode >= ATA_WDMA0) {
402 	pci_write_config(gparent, mreg,
403 			 mval | (0x02 << (atadev->unit << 2)), 1);
404 	pci_write_config(gparent, dreg, dmatimings[mode & ATA_MODE_MASK], 2);
405 
406     }
407     else {
408 	pci_write_config(gparent, mreg,
409 			 mval | (0x01 << (atadev->unit << 2)), 1);
410 	pci_write_config(gparent, preg, piotimings[mode & ATA_MODE_MASK], 2);
411     }
412     atadev->mode = mode;
413 }
414 
415 struct ata_siiprb_dma_prdentry {
416     u_int64_t addr;
417     u_int32_t count;
418     u_int32_t control;
419 } __packed;
420 
421 #define ATA_SIIPRB_DMA_ENTRIES		125
422 struct ata_siiprb_ata_command {
423     struct ata_siiprb_dma_prdentry prd[ATA_SIIPRB_DMA_ENTRIES];
424 } __packed;
425 
426 struct ata_siiprb_atapi_command {
427     u_int8_t ccb[16];
428     struct ata_siiprb_dma_prdentry prd[ATA_SIIPRB_DMA_ENTRIES];
429 } __packed;
430 
431 struct ata_siiprb_command {
432     u_int16_t control;
433     u_int16_t protocol_override;
434     u_int32_t transfer_count;
435     u_int8_t fis[24];
436     union {
437 	struct ata_siiprb_ata_command ata;
438 	struct ata_siiprb_atapi_command atapi;
439     } u;
440 } __packed;
441 
442 static int
443 ata_siiprb_allocate(device_t dev)
444 {
445     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
446     struct ata_channel *ch = device_get_softc(dev);
447     int offset = ch->unit * 0x2000;
448 
449     /* set the SATA resources */
450     ch->r_io[ATA_SSTATUS].res = ctlr->r_res2;
451     ch->r_io[ATA_SSTATUS].offset = 0x1f04 + offset;
452     ch->r_io[ATA_SERROR].res = ctlr->r_res2;
453     ch->r_io[ATA_SERROR].offset = 0x1f08 + offset;
454     ch->r_io[ATA_SCONTROL].res = ctlr->r_res2;
455     ch->r_io[ATA_SCONTROL].offset = 0x1f00 + offset;
456     ch->r_io[ATA_SACTIVE].res = ctlr->r_res2;
457     ch->r_io[ATA_SACTIVE].offset = 0x1f0c + offset;
458 
459     ch->hw.status = ata_siiprb_status;
460     ch->hw.begin_transaction = ata_siiprb_begin_transaction;
461     ch->hw.end_transaction = ata_siiprb_end_transaction;
462     ch->hw.command = NULL;	/* not used here */
463     ch->hw.softreset = ata_siiprb_softreset;
464     return 0;
465 }
466 
467 static int
468 ata_siiprb_status(device_t dev)
469 {
470     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
471     struct ata_channel *ch = device_get_softc(dev);
472     u_int32_t action = ATA_INL(ctlr->r_res1, 0x0044);
473     int offset = ch->unit * 0x2000;
474 
475     if (action & (1 << ch->unit)) {
476 	u_int32_t istatus = ATA_INL(ctlr->r_res2, 0x1008 + offset);
477 
478 	/* do we have any PHY events ? */
479 	ata_sata_phy_check_events(dev);
480 
481 	/* clear interrupt(s) */
482 	ATA_OUTL(ctlr->r_res2, 0x1008 + offset, istatus);
483 
484 	/* do we have any device action ? */
485 	return (istatus & 0x00000003);
486     }
487     return 0;
488 }
489 
490 static int
491 ata_siiprb_begin_transaction(struct ata_request *request)
492 {
493     struct ata_pci_controller *ctlr=device_get_softc(GRANDPARENT(request->dev));
494     struct ata_channel *ch = device_get_softc(request->parent);
495     struct ata_siiprb_command *prb;
496     struct ata_siiprb_dma_prdentry *prd;
497     int offset = ch->unit * 0x2000;
498     u_int64_t prb_bus;
499     int dummy;
500 
501     /* SOS XXX */
502     if (request->u.ata.command == ATA_DEVICE_RESET) {
503         request->result = 0;
504         return ATA_OP_FINISHED;
505     }
506 
507     /* check for 48 bit access and convert if needed */
508     ata_modify_if_48bit(request);
509 
510     /* get a piece of the workspace for this request */
511     prb = (struct ata_siiprb_command *)ch->dma->work;
512 
513     /* set basic prd options ata/atapi etc etc */
514     bzero(prb, sizeof(struct ata_siiprb_command));
515 
516     /* setup the FIS for this request */
517     if (!ata_request2fis_h2d(request, &prb->fis[0])) {
518         device_printf(request->dev, "setting up SATA FIS failed\n");
519         request->result = EIO;
520         return ATA_OP_FINISHED;
521     }
522 
523     /* setup transfer type */
524     if (request->flags & ATA_R_ATAPI) {
525 	struct ata_device *atadev = device_get_softc(request->dev);
526 
527 	bcopy(request->u.atapi.ccb, prb->u.atapi.ccb, 16);
528 	if ((atadev->param.config & ATA_PROTO_MASK) == ATA_PROTO_ATAPI_12)
529 	    ATA_OUTL(ctlr->r_res2, 0x1004 + offset, 0x00000020);
530 	else
531 	    ATA_OUTL(ctlr->r_res2, 0x1000 + offset, 0x00000020);
532 	if (request->flags & ATA_R_READ)
533 	    prb->control = htole16(0x0010);
534 	if (request->flags & ATA_R_WRITE)
535 	    prb->control = htole16(0x0020);
536 	prd = &prb->u.atapi.prd[0];
537     }
538     else
539 	prd = &prb->u.ata.prd[0];
540 
541     /* if request moves data setup and load SG list */
542     if (request->flags & (ATA_R_READ | ATA_R_WRITE)) {
543 	if (ch->dma->load(ch->dev, request->data, request->bytecount,
544 			  request->flags & ATA_R_READ, prd, &dummy)) {
545 	    device_printf(request->dev, "setting up DMA failed\n");
546 	    request->result = EIO;
547 	    return ATA_OP_FINISHED;
548 	}
549     }
550 
551     /* activate the prb */
552     prb_bus = ch->dma->work_bus;
553     ATA_OUTL(ctlr->r_res2, 0x1c00 + offset, prb_bus);
554     ATA_OUTL(ctlr->r_res2, 0x1c04 + offset, prb_bus>>32);
555 
556     /* start the timeout */
557     callout_reset(&request->callout, request->timeout * hz,
558                   (timeout_t*)ata_timeout, request);
559     return ATA_OP_CONTINUES;
560 }
561 
562 static int
563 ata_siiprb_end_transaction(struct ata_request *request)
564 {
565     struct ata_pci_controller *ctlr=device_get_softc(GRANDPARENT(request->dev));
566     struct ata_channel *ch = device_get_softc(request->parent);
567     struct ata_siiprb_command *prb;
568     int offset = ch->unit * 0x2000;
569     int error, timeout;
570 
571     /* kill the timeout */
572     callout_stop_sync(&request->callout);
573 
574     prb = (struct ata_siiprb_command *)
575 	((u_int8_t *)rman_get_virtual(ctlr->r_res2) + offset);
576 
577     /* any controller errors flagged ? */
578     if ((error = ATA_INL(ctlr->r_res2, 0x1024 + offset))) {
579 	if (bootverbose)
580 	    kprintf("ata_siiprb_end_transaction %s error=%08x\n",
581 		    ata_cmd2str(request), error);
582 
583 	/* if device error status get details */
584 	if (error == 1 || error == 2) {
585 	    request->status = prb->fis[2];
586 	    if (request->status & ATA_S_ERROR)
587 		request->error = prb->fis[3];
588 	}
589 
590 	/* SOS XXX handle other controller errors here */
591 
592 	/* initialize port */
593 	ATA_OUTL(ctlr->r_res2, 0x1000 + offset, 0x00000004);
594 
595 	/* poll for port ready */
596 	for (timeout = 0; timeout < 1000; timeout++) {
597 	    DELAY(1000);
598 	    if (ATA_INL(ctlr->r_res2, 0x1008 + offset) & 0x00040000)
599 		break;
600 	}
601 	if (bootverbose) {
602 	    if (timeout >= 1000)
603 		device_printf(ch->dev, "port initialize timeout\n");
604 	    else
605 		device_printf(ch->dev, "port initialize time=%dms\n", timeout);
606 	}
607     }
608 
609     /* update progress */
610     if (!(request->status & ATA_S_ERROR) && !(request->flags & ATA_R_TIMEOUT)) {
611 	if (request->flags & ATA_R_READ)
612 	    request->donecount = prb->transfer_count;
613 	else
614 	    request->donecount = request->bytecount;
615     }
616 
617     /* release SG list etc */
618     ch->dma->unload(ch->dev);
619 
620     return ATA_OP_FINISHED;
621 }
622 
623 static int
624 ata_siiprb_issue_cmd(device_t dev)
625 {
626     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
627     struct ata_channel *ch = device_get_softc(dev);
628     u_int64_t prb_bus = ch->dma->work_bus;
629     u_int32_t status;
630     int offset = ch->unit * 0x2000;
631     int timeout;
632 
633     /* issue command to chip */
634     ATA_OUTL(ctlr->r_res2, 0x1c00 + offset, prb_bus);
635     ATA_OUTL(ctlr->r_res2, 0x1c04 + offset, prb_bus >> 32);
636 
637     /* poll for command finished */
638     for (timeout = 0; timeout < 10000; timeout++) {
639         DELAY(1000);
640         if ((status = ATA_INL(ctlr->r_res2, 0x1008 + offset)) & 0x00010000)
641             break;
642     }
643     if (timeout >= 1000)
644 	return EIO;
645 
646     if (bootverbose)
647 	device_printf(ch->dev, "ata_siiprb_issue_cmd time=%dms status=%08x\n",
648 		      timeout, status);
649     return 0;
650 }
651 
652 static u_int32_t
653 ata_siiprb_softreset(device_t dev, int port)
654 {
655     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
656     struct ata_channel *ch = device_get_softc(dev);
657     struct ata_siiprb_command *prb = (struct ata_siiprb_command *)ch->dma->work;
658     u_int32_t signature;
659     int offset = ch->unit * 0x2000;
660 
661     /* setup the workspace for a soft reset command */
662     bzero(prb, sizeof(struct ata_siiprb_command));
663     prb->control = htole16(0x0080);
664     prb->fis[1] = port & 0x0f;
665 
666     /* issue soft reset */
667     if (ata_siiprb_issue_cmd(dev))
668 	return -1;
669 
670     ata_udelay(150000);
671 
672     /* get possible signature */
673     prb = (struct ata_siiprb_command *)
674 	((u_int8_t *)rman_get_virtual(ctlr->r_res2) + offset);
675     signature=prb->fis[12]|(prb->fis[4]<<8)|(prb->fis[5]<<16)|(prb->fis[6]<<24);
676 
677     /* clear error bits/interrupt */
678     ATA_IDX_OUTL(ch, ATA_SERROR, 0xffffffff);
679 
680     return signature;
681 }
682 
683 static void
684 ata_siiprb_reset(device_t dev)
685 {
686     struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
687     struct ata_channel *ch = device_get_softc(dev);
688     int offset = ch->unit * 0x2000;
689     u_int32_t status, signature;
690     int timeout;
691 
692     /* disable interrupts */
693     ATA_OUTL(ctlr->r_res2, 0x1014 + offset, 0x000000ff);
694 
695     /* reset channel HW */
696     ATA_OUTL(ctlr->r_res2, 0x1000 + offset, 0x00000001);
697     DELAY(1000);
698     ATA_OUTL(ctlr->r_res2, 0x1004 + offset, 0x00000001);
699     DELAY(10000);
700 
701     /* poll for channel ready */
702     for (timeout = 0; timeout < 1000; timeout++) {
703         if ((status = ATA_INL(ctlr->r_res2, 0x1008 + offset)) & 0x00040000)
704             break;
705         DELAY(1000);
706     }
707 
708     if (bootverbose) {
709 	if (timeout >= 1000)
710 	    device_printf(ch->dev, "channel HW reset timeout\n");
711 	else
712 	    device_printf(ch->dev, "channel HW reset time=%dms\n", timeout);
713     }
714 
715     /* reset phy */
716     if (!ata_sata_phy_reset(dev)) {
717 	if (bootverbose)
718 	    device_printf(ch->dev, "phy reset found no device\n");
719 	ch->devices = 0;
720 	goto finish;
721     }
722 
723     /* issue soft reset */
724     signature = ata_siiprb_softreset(dev, ATA_PM);
725     if (bootverbose)
726 	device_printf(ch->dev, "SIGNATURE: %08x\n", signature);
727 
728     /* figure out whats there */
729     switch (signature >> 16) {
730     case 0x0000:
731 	ch->devices = ATA_ATA_MASTER;
732 	break;
733     case 0x9669:
734 	ch->devices = ATA_PORTMULTIPLIER;
735 	device_printf(ch->dev, "Portmultipliers not supported yet\n");
736 	ch->devices = 0;
737 	break;
738     case 0xeb14:
739 	ch->devices = ATA_ATAPI_MASTER;
740 	break;
741     default:
742 	ch->devices = 0;
743     }
744     if (bootverbose)
745 	device_printf(dev, "siiprb_reset devices=%08x\n", ch->devices);
746 
747 finish:
748     /* clear interrupt(s) */
749     ATA_OUTL(ctlr->r_res2, 0x1008 + offset, 0x000008ff);
750 
751     /* require explicit interrupt ack */
752     ATA_OUTL(ctlr->r_res2, 0x1000 + offset, 0x00000008);
753 
754     /* 64bit mode */
755     ATA_OUTL(ctlr->r_res2, 0x1004 + offset, 0x00000400);
756 
757     /* enable interrupts wanted */
758     ATA_OUTL(ctlr->r_res2, 0x1010 + offset, 0x000000ff);
759 }
760 
761 static void
762 ata_siiprb_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
763 {
764     struct ata_dmasetprd_args *args = xsc;
765     struct ata_siiprb_dma_prdentry *prd = args->dmatab;
766     int i;
767 
768     if ((args->error = error))
769 	return;
770 
771     for (i = 0; i < nsegs; i++) {
772 	prd[i].addr = htole64(segs[i].ds_addr);
773 	prd[i].count = htole32(segs[i].ds_len);
774     }
775     prd[i - 1].control = htole32(ATA_DMA_EOT);
776     KASSERT(nsegs <= ATA_SIIPRB_DMA_ENTRIES,("too many DMA segment entries\n"));
777     args->nsegs = nsegs;
778 }
779 
780 static void
781 ata_siiprb_dmainit(device_t dev)
782 {
783     struct ata_channel *ch = device_get_softc(dev);
784 
785     ata_dmainit(dev);
786     if (ch->dma) {
787 	/* note start and stop are not used here */
788 	ch->dma->setprd = ata_siiprb_dmasetprd;
789 	ch->dma->max_address = BUS_SPACE_MAXADDR;
790     }
791 }
792