1 /* $NetBSD: aceride.c,v 1.38 2020/12/20 19:30:03 jdolecek Exp $ */
2
3 /*
4 * Copyright (c) 1999, 2000, 2001 Manuel Bouyer.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
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 __KERNEL_RCSID(0, "$NetBSD: aceride.c,v 1.38 2020/12/20 19:30:03 jdolecek Exp $");
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32
33 #include <dev/pci/pcivar.h>
34 #include <dev/pci/pcidevs.h>
35 #include <dev/pci/pciidereg.h>
36 #include <dev/pci/pciidevar.h>
37 #include <dev/pci/pciide_acer_reg.h>
38
39 static int acer_pcib_match(const struct pci_attach_args *);
40 static void acer_do_reset(struct ata_channel *, int);
41 static void acer_chip_map(struct pciide_softc*, const struct pci_attach_args*);
42 static void acer_setup_channel(struct ata_channel*);
43 static int acer_pci_intr(void *);
44 static int acer_dma_init(void *, int, int, void *, size_t, int);
45
46 static int aceride_match(device_t, cfdata_t, void *);
47 static void aceride_attach(device_t, device_t, void *);
48
49 struct aceride_softc {
50 struct pciide_softc pciide_sc;
51 struct pci_attach_args pcib_pa;
52 };
53
54 CFATTACH_DECL_NEW(aceride, sizeof(struct aceride_softc),
55 aceride_match, aceride_attach, pciide_detach, NULL);
56
57 static const struct pciide_product_desc pciide_acer_products[] = {
58 { PCI_PRODUCT_ALI_M5229,
59 0,
60 "Acer Labs M5229 UDMA IDE Controller",
61 acer_chip_map,
62 },
63 { 0,
64 0,
65 NULL,
66 NULL
67 }
68 };
69
70 static int
aceride_match(device_t parent,cfdata_t match,void * aux)71 aceride_match(device_t parent, cfdata_t match, void *aux)
72 {
73 struct pci_attach_args *pa = aux;
74
75 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ALI &&
76 PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
77 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
78 if (pciide_lookup_product(pa->pa_id, pciide_acer_products))
79 return (2);
80 }
81 return (0);
82 }
83
84 static void
aceride_attach(device_t parent,device_t self,void * aux)85 aceride_attach(device_t parent, device_t self, void *aux)
86 {
87 struct pci_attach_args *pa = aux;
88 struct pciide_softc *sc = device_private(self);
89
90 sc->sc_wdcdev.sc_atac.atac_dev = self;
91
92 pciide_common_attach(sc, pa,
93 pciide_lookup_product(pa->pa_id, pciide_acer_products));
94 }
95
96 static int
acer_pcib_match(const struct pci_attach_args * pa)97 acer_pcib_match(const struct pci_attach_args *pa)
98 {
99 /*
100 * we need to access the PCI config space of the pcib, see
101 * acer_do_reset()
102 */
103 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
104 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA &&
105 PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ALI &&
106 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ALI_M1533)
107 return 1;
108 return 0;
109 }
110
111 static void
acer_chip_map(struct pciide_softc * sc,const struct pci_attach_args * pa)112 acer_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa)
113 {
114 struct pciide_channel *cp;
115 int channel;
116 pcireg_t cr, interface;
117 pcireg_t rev = PCI_REVISION(pa->pa_class);
118 struct aceride_softc *acer_sc = (struct aceride_softc *)sc;
119
120 if (pciide_chipen(sc, pa) == 0)
121 return;
122
123 aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
124 "bus-master DMA support present");
125 pciide_mapreg_dma(sc, pa);
126 aprint_verbose("\n");
127 sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
128 if (sc->sc_dma_ok) {
129 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA;
130 if (rev >= 0x20) {
131 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA;
132 if (rev >= 0xC7)
133 sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
134 else if (rev >= 0xC4)
135 sc->sc_wdcdev.sc_atac.atac_udma_cap = 5;
136 else if (rev >= 0xC2)
137 sc->sc_wdcdev.sc_atac.atac_udma_cap = 4;
138 else
139 sc->sc_wdcdev.sc_atac.atac_udma_cap = 2;
140 }
141 sc->sc_wdcdev.irqack = pciide_irqack;
142 if (rev <= 0xc4) {
143 sc->sc_wdcdev.dma_init = acer_dma_init;
144 aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
145 "using PIO transfers above 137GB as workaround for "
146 "48bit DMA access bug, expect reduced performance\n");
147 }
148 }
149
150 sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
151 sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
152 sc->sc_wdcdev.sc_atac.atac_set_modes = acer_setup_channel;
153 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
154 sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS;
155 sc->sc_wdcdev.wdc_maxdrives = 2;
156
157 pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CDRC,
158 (pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CDRC) |
159 ACER_CDRC_DMA_EN) & ~ACER_CDRC_FIFO_DISABLE);
160
161 /* Enable "microsoft register bits" R/W. */
162 pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR3,
163 pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR3) | ACER_CCAR3_PI);
164 pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR1,
165 pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR1) &
166 ~(ACER_CHANSTATUS_RO|PCIIDE_CHAN_RO(0)|PCIIDE_CHAN_RO(1)));
167 pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR2,
168 pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR2) &
169 ~ACER_CHANSTATUSREGS_RO);
170 cr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG);
171 cr |= (PCIIDE_CHANSTATUS_EN << PCI_INTERFACE_SHIFT);
172
173 {
174 /*
175 * some BIOSes (port-cats ABLE) enable native mode, but don't
176 * setup everything correctly, so allow the forcing of
177 * compat mode
178 */
179 bool force_compat_mode;
180 bool property_is_set;
181 property_is_set = prop_dictionary_get_bool(
182 device_properties(sc->sc_wdcdev.sc_atac.atac_dev),
183 "ali1543-ide-force-compat-mode",
184 &force_compat_mode);
185 if (property_is_set && force_compat_mode) {
186 cr &= ~((PCIIDE_INTERFACE_PCI(0)
187 | PCIIDE_INTERFACE_PCI(1))
188 << PCI_INTERFACE_SHIFT);
189 }
190 }
191
192 pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG, cr);
193 /* Don't use cr, re-read the real register content instead */
194 interface = PCI_INTERFACE(pci_conf_read(sc->sc_pc, sc->sc_tag,
195 PCI_CLASS_REG));
196
197 if (rev >= 0xC2) {
198 /* From FreeBSD: use device interrupt as byte count end */
199 pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_0x4A,
200 pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_0x4A)
201 | ACER_0x4A_BCEINT);
202
203 /* From linux: enable "Cable Detection" */
204 pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_0x4B,
205 pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_0x4B)
206 | ACER_0x4B_CDETECT);
207 }
208
209 wdc_allocate_regs(&sc->sc_wdcdev);
210 if (rev == 0xC3) {
211 /* install reset bug workaround */
212 if (pci_find_device(&acer_sc->pcib_pa, acer_pcib_match) == 0) {
213 aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
214 "WARNING: can't find pci-isa bridge\n");
215 } else
216 sc->sc_wdcdev.reset = acer_do_reset;
217 }
218
219 for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
220 channel++) {
221 cp = &sc->pciide_channels[channel];
222 if (pciide_chansetup(sc, channel, interface) == 0)
223 continue;
224 if ((interface & PCIIDE_CHAN_EN(channel)) == 0) {
225 aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
226 "%s channel ignored (disabled)\n", cp->name);
227 cp->ata_channel.ch_flags |= ATACH_DISABLED;
228 continue;
229 }
230 /* newer controllers seems to lack the ACER_CHIDS. Sigh */
231 pciide_mapchan(pa, cp, interface,
232 (rev >= 0xC2) ? pciide_pci_intr : acer_pci_intr);
233 }
234 }
235
236 static void
acer_do_reset(struct ata_channel * chp,int poll)237 acer_do_reset(struct ata_channel *chp, int poll)
238 {
239 struct pciide_softc *sc = CHAN_TO_PCIIDE(chp);
240 struct aceride_softc *acer_sc = (struct aceride_softc *)sc;
241 u_int8_t reg;
242
243 /*
244 * From OpenSolaris: after a reset we need to disable/enable the
245 * corresponding channel, or data corruption will occur in
246 * UltraDMA modes
247 */
248
249 wdc_do_reset(chp, poll);
250 reg = pciide_pci_read(acer_sc->pcib_pa.pa_pc, acer_sc->pcib_pa.pa_tag,
251 ACER_PCIB_CTRL);
252 pciide_pci_write(acer_sc->pcib_pa.pa_pc, acer_sc->pcib_pa.pa_tag,
253 ACER_PCIB_CTRL, reg & ~ACER_PCIB_CTRL_ENCHAN(chp->ch_channel));
254 delay(1000);
255 pciide_pci_write(acer_sc->pcib_pa.pa_pc, acer_sc->pcib_pa.pa_tag,
256 ACER_PCIB_CTRL, reg);
257 }
258
259 static void
acer_setup_channel(struct ata_channel * chp)260 acer_setup_channel(struct ata_channel *chp)
261 {
262 struct ata_drive_datas *drvp;
263 int drive, s;
264 u_int32_t acer_fifo_udma;
265 u_int32_t idedma_ctl;
266 struct pciide_channel *cp = (struct pciide_channel*)chp;
267 struct pciide_softc *sc = CHAN_TO_PCIIDE(chp);
268
269 idedma_ctl = 0;
270 acer_fifo_udma = pci_conf_read(sc->sc_pc, sc->sc_tag, ACER_FTH_UDMA);
271 ATADEBUG_PRINT(("acer_setup_channel: old fifo/udma reg 0x%x\n",
272 acer_fifo_udma), DEBUG_PROBE);
273 /* setup DMA if needed */
274 pciide_channel_dma_setup(cp);
275
276 if ((chp->ch_drive[0].drive_flags | chp->ch_drive[1].drive_flags) &
277 ATA_DRIVE_UDMA) { /* check 80 pins cable */
278 if (pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_0x4A) &
279 ACER_0x4A_80PIN(chp->ch_channel)) {
280 if (chp->ch_drive[0].UDMA_mode > 2)
281 chp->ch_drive[0].UDMA_mode = 2;
282 if (chp->ch_drive[1].UDMA_mode > 2)
283 chp->ch_drive[1].UDMA_mode = 2;
284 }
285 }
286
287 for (drive = 0; drive < 2; drive++) {
288 drvp = &chp->ch_drive[drive];
289 /* If no drive, skip */
290 if (drvp->drive_type == ATA_DRIVET_NONE)
291 continue;
292 ATADEBUG_PRINT(("acer_setup_channel: old timings reg for "
293 "channel %d drive %d 0x%x\n", chp->ch_channel, drive,
294 pciide_pci_read(sc->sc_pc, sc->sc_tag,
295 ACER_IDETIM(chp->ch_channel, drive))), DEBUG_PROBE);
296 /* clear FIFO/DMA mode */
297 acer_fifo_udma &= ~(ACER_FTH_OPL(chp->ch_channel, drive, 0x3) |
298 ACER_UDMA_EN(chp->ch_channel, drive) |
299 ACER_UDMA_TIM(chp->ch_channel, drive, 0x7));
300
301 /* (U)DMA doesn't work with ATAPI devices */
302 if (drvp->drive_type == ATA_DRIVET_ATAPI) {
303 s = splbio();
304 drvp->drive_flags &= ~(ATA_DRIVE_DMA|ATA_DRIVE_UDMA);
305 splx(s);
306 }
307
308 /* add timing values, setup DMA if needed */
309 if ((drvp->drive_flags & ATA_DRIVE_DMA) == 0 &&
310 (drvp->drive_flags & ATA_DRIVE_UDMA) == 0) {
311 acer_fifo_udma |=
312 ACER_FTH_OPL(chp->ch_channel, drive, 0x1);
313 goto pio;
314 }
315
316 acer_fifo_udma |= ACER_FTH_OPL(chp->ch_channel, drive, 0x2);
317 if (drvp->drive_flags & ATA_DRIVE_UDMA) {
318 /* use Ultra/DMA */
319 s = splbio();
320 drvp->drive_flags &= ~ATA_DRIVE_DMA;
321 splx(s);
322 acer_fifo_udma |= ACER_UDMA_EN(chp->ch_channel, drive);
323 acer_fifo_udma |=
324 ACER_UDMA_TIM(chp->ch_channel, drive,
325 acer_udma[drvp->UDMA_mode]);
326 /* XXX disable if one drive < UDMA3 ? */
327 if (drvp->UDMA_mode >= 3) {
328 pciide_pci_write(sc->sc_pc, sc->sc_tag,
329 ACER_0x4B,
330 pciide_pci_read(sc->sc_pc, sc->sc_tag,
331 ACER_0x4B) | ACER_0x4B_UDMA66);
332 }
333 } else {
334 /*
335 * use Multiword DMA
336 * Timings will be used for both PIO and DMA,
337 * so adjust DMA mode if needed
338 */
339 if (drvp->PIO_mode > (drvp->DMA_mode + 2))
340 drvp->PIO_mode = drvp->DMA_mode + 2;
341 if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
342 drvp->DMA_mode = (drvp->PIO_mode > 2) ?
343 drvp->PIO_mode - 2 : 0;
344 if (drvp->DMA_mode == 0)
345 drvp->PIO_mode = 0;
346 }
347 idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
348 pio: pciide_pci_write(sc->sc_pc, sc->sc_tag,
349 ACER_IDETIM(chp->ch_channel, drive),
350 acer_pio[drvp->PIO_mode]);
351 }
352 ATADEBUG_PRINT(("acer_setup_channel: new fifo/udma reg 0x%x\n",
353 acer_fifo_udma), DEBUG_PROBE);
354 pci_conf_write(sc->sc_pc, sc->sc_tag, ACER_FTH_UDMA, acer_fifo_udma);
355 if (idedma_ctl != 0) {
356 /* Add software bits in status register */
357 bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0,
358 idedma_ctl);
359 }
360 }
361
362 static int
acer_pci_intr(void * arg)363 acer_pci_intr(void *arg)
364 {
365 struct pciide_softc *sc = arg;
366 struct pciide_channel *cp;
367 struct ata_channel *wdc_cp;
368 int i, rv, crv;
369 u_int32_t chids;
370
371 rv = 0;
372 chids = pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CHIDS);
373 for (i = 0; i < sc->sc_wdcdev.sc_atac.atac_nchannels; i++) {
374 cp = &sc->pciide_channels[i];
375 wdc_cp = &cp->ata_channel;
376 /* If a compat channel skip. */
377 if (cp->compat)
378 continue;
379 if (chids & ACER_CHIDS_INT(i)) {
380 crv = wdcintr(wdc_cp);
381 if (crv == 0) {
382 aprint_error("%s:%d: bogus intr\n",
383 device_xname(
384 sc->sc_wdcdev.sc_atac.atac_dev), i);
385 pciide_irqack(wdc_cp);
386 } else
387 rv = 1;
388 }
389 }
390 return rv;
391 }
392
393 static int
acer_dma_init(void * v,int channel,int drive,void * databuf,size_t datalen,int flags)394 acer_dma_init(void *v, int channel, int drive, void *databuf,
395 size_t datalen, int flags)
396 {
397
398 /* use PIO for LBA48 transfer */
399 if (flags & WDC_DMA_LBA48)
400 return EINVAL;
401
402 return pciide_dma_init(v, channel, drive, databuf, datalen, flags);
403 }
404