svwsata.c revision 1.15 
1/*	$NetBSD: svwsata.c,v 1.15 2012/07/26 20:49:50 jakllsch Exp $	*/
2
3/*
4 * Copyright (c) 2005 Mark Kettenis
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#include <sys/cdefs.h>
20__KERNEL_RCSID(0, "$NetBSD: svwsata.c,v 1.15 2012/07/26 20:49:50 jakllsch Exp $");
21
22#include <sys/param.h>
23#include <sys/systm.h>
24
25#include <dev/ata/atareg.h>
26#include <dev/ata/satareg.h>
27#include <dev/ata/satavar.h>
28#include <dev/pci/pcivar.h>
29#include <dev/pci/pcidevs.h>
30#include <dev/pci/pciidereg.h>
31#include <dev/pci/pciidevar.h>
32#include <dev/pci/pciide_svwsata_reg.h>
33
34static int  svwsata_match(device_t, cfdata_t, void *);
35static void svwsata_attach(device_t, device_t, void *);
36
37static void svwsata_chip_map(struct pciide_softc *,
38    const struct pci_attach_args *);
39static void svwsata_mapreg_dma(struct pciide_softc *,
40    const struct pci_attach_args *);
41static void svwsata_mapchan(struct pciide_channel *);
42
43CFATTACH_DECL_NEW(svwsata, sizeof(struct pciide_softc),
44    svwsata_match, svwsata_attach, NULL, NULL);
45
46static const struct pciide_product_desc pciide_svwsata_products[] =  {
47	{ PCI_PRODUCT_SERVERWORKS_K2_SATA,
48	  0,
49	  "ServerWorks K2 SATA Controller",
50	  svwsata_chip_map
51	},
52	{ PCI_PRODUCT_SERVERWORKS_FRODO4_SATA,
53	  0,
54	  "ServerWorks Frodo4 SATA Controller",
55	  svwsata_chip_map
56	},
57	{ PCI_PRODUCT_SERVERWORKS_FRODO8_SATA,
58	  0,
59	  "ServerWorks Frodo8 SATA Controller",
60	  svwsata_chip_map
61	},
62	{ PCI_PRODUCT_SERVERWORKS_HT1000_SATA_1,
63	  0,
64	  "ServerWorks HT-1000 SATA Controller",
65	  svwsata_chip_map
66	},
67	{ PCI_PRODUCT_SERVERWORKS_HT1000_SATA_2,
68	  0,
69	  "ServerWorks HT-1000 SATA Controller",
70	  svwsata_chip_map
71	},
72	{ 0,
73	  0,
74	  NULL,
75	  NULL,
76	}
77};
78
79static int
80svwsata_match(device_t parent, cfdata_t match, void *aux)
81{
82	struct pci_attach_args *pa = aux;
83
84	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SERVERWORKS) {
85		if (pciide_lookup_product(pa->pa_id,
86		    pciide_svwsata_products))
87			return (2);
88	}
89	return (0);
90}
91
92static void
93svwsata_attach(device_t parent, device_t self, void *aux)
94{
95	struct pci_attach_args *pa = aux;
96	struct pciide_softc *sc = device_private(self);
97
98	sc->sc_wdcdev.sc_atac.atac_dev = self;
99
100	pciide_common_attach(sc, pa,
101	    pciide_lookup_product(pa->pa_id, pciide_svwsata_products));
102}
103
104static void
105svwsata_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa)
106{
107	struct pciide_channel *cp;
108	pci_intr_handle_t intrhandle;
109	pcireg_t interface;
110	const char *intrstr;
111	int channel;
112
113	if (pciide_chipen(sc, pa) == 0)
114		return;
115
116	/* The 4-port version has a dummy second function. */
117	if (pci_conf_read(sc->sc_pc, sc->sc_tag,
118	    PCI_MAPREG_START + 0x14) == 0) {
119		aprint_normal("\n");
120		return;
121	}
122
123	if (pci_mapreg_map(pa, PCI_MAPREG_START + 0x14,
124			   PCI_MAPREG_TYPE_MEM |
125			   PCI_MAPREG_MEM_TYPE_32BIT, 0,
126			   &sc->sc_ba5_st, &sc->sc_ba5_sh,
127			   NULL, &sc->sc_ba5_ss) != 0) {
128		aprint_error(": unable to map BA5 register space\n");
129		return;
130	}
131
132	aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
133	    "bus-master DMA support present");
134	svwsata_mapreg_dma(sc, pa);
135	aprint_verbose("\n");
136
137	sc->sc_wdcdev.cap = WDC_CAPABILITY_WIDEREGS;
138
139	sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
140	sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
141	if (sc->sc_dma_ok) {
142		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA | ATAC_CAP_UDMA;
143		sc->sc_wdcdev.irqack = pciide_irqack;
144		sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
145		sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
146	}
147
148	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
149	sc->sc_wdcdev.sc_atac.atac_nchannels = 4;
150	sc->sc_wdcdev.sc_atac.atac_set_modes = sata_setup_channel;
151
152	/* We can use SControl and SStatus to probe for drives. */
153	sc->sc_wdcdev.sc_atac.atac_probe = wdc_sataprobe;
154
155	wdc_allocate_regs(&sc->sc_wdcdev);
156
157	/* Map and establish the interrupt handler. */
158	if(pci_intr_map(pa, &intrhandle) != 0) {
159		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
160		    "couldn't map native-PCI interrupt\n");
161		return;
162	}
163	intrstr = pci_intr_string(pa->pa_pc, intrhandle);
164	sc->sc_pci_ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_BIO,
165	    pciide_pci_intr, sc);
166	if (sc->sc_pci_ih != NULL) {
167		aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
168		    "using %s for native-PCI interrupt\n",
169		    intrstr ? intrstr : "unknown interrupt");
170	} else {
171		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
172		    "couldn't establish native-PCI interrupt");
173		if (intrstr != NULL)
174			aprint_error(" at %s", intrstr);
175		aprint_error("\n");
176		return;
177	}
178
179	interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
180	    PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
181
182
183	for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
184	     channel++) {
185		cp = &sc->pciide_channels[channel];
186
187		if (pciide_chansetup(sc, channel, interface) == 0)
188			continue;
189		svwsata_mapchan(cp);
190	}
191}
192
193static void
194svwsata_mapreg_dma(struct pciide_softc *sc, const struct pci_attach_args *pa)
195{
196	struct pciide_channel *pc;
197	int chan, reg;
198	bus_size_t size;
199
200	sc->sc_wdcdev.dma_arg = sc;
201	sc->sc_wdcdev.dma_init = pciide_dma_init;
202	sc->sc_wdcdev.dma_start = pciide_dma_start;
203	sc->sc_wdcdev.dma_finish = pciide_dma_finish;
204
205	if (device_cfdata(sc->sc_wdcdev.sc_atac.atac_dev)->cf_flags &
206	    PCIIDE_OPTIONS_NODMA) {
207		aprint_normal(
208		    ", but unused (forced off by config file)");
209		sc->sc_dma_ok = 0;
210		return;
211	}
212
213	/*
214	 * Slice off a subregion of BA5 for each of the channel's DMA
215	 * registers.
216	 */
217
218	sc->sc_dma_iot = sc->sc_ba5_st;
219	for (chan = 0; chan < 4; chan++) {
220		pc = &sc->pciide_channels[chan];
221		for (reg = 0; reg < IDEDMA_NREGS; reg++) {
222			size = 4;
223			if (size > (IDEDMA_SCH_OFFSET - reg))
224				size = IDEDMA_SCH_OFFSET - reg;
225			if (bus_space_subregion(sc->sc_ba5_st,
226			    sc->sc_ba5_sh,
227			    (chan << 8) + SVWSATA_DMA + reg,
228			    size, &pc->dma_iohs[reg]) != 0) {
229				sc->sc_dma_ok = 0;
230				aprint_normal(", but can't subregion offset "
231				    "%lu size %lu",
232				    (u_long) (chan << 8) + SVWSATA_DMA + reg,
233				    (u_long) size);
234				return;
235			}
236		}
237	}
238
239	/* DMA registers all set up! */
240	sc->sc_dmat = pa->pa_dmat;
241	sc->sc_dma_ok = 1;
242}
243
244static void
245svwsata_mapchan(struct pciide_channel *cp)
246{
247	struct ata_channel *wdc_cp = &cp->ata_channel;
248	struct pciide_softc *sc = CHAN_TO_PCIIDE(wdc_cp);
249	struct wdc_regs *wdr = CHAN_TO_WDC_REGS(wdc_cp);
250	int i;
251
252	cp->compat = 0;
253	cp->ih = sc->sc_pci_ih;
254
255	wdr->cmd_iot = sc->sc_ba5_st;
256	if (bus_space_subregion(sc->sc_ba5_st, sc->sc_ba5_sh,
257		(wdc_cp->ch_channel << 8) + SVWSATA_TF0,
258		SVWSATA_TF8 - SVWSATA_TF0, &wdr->cmd_baseioh) != 0) {
259		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
260		    "couldn't map %s cmd regs\n", cp->name);
261		goto bad;
262	}
263
264	wdr->ctl_iot = sc->sc_ba5_st;
265	if (bus_space_subregion(sc->sc_ba5_st, sc->sc_ba5_sh,
266		(wdc_cp->ch_channel << 8) + SVWSATA_TF8, 4,
267		&cp->ctl_baseioh) != 0) {
268		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
269		    "couldn't map %s ctl regs\n", cp->name);
270		goto bad;
271	}
272	wdr->ctl_ioh = cp->ctl_baseioh;
273
274	for (i = 0; i < WDC_NREG; i++) {
275		if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
276					i << 2, i == 0 ? 4 : 1,
277					&wdr->cmd_iohs[i]) != 0) {
278			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
279			    "couldn't subregion %s channel cmd regs\n",
280			    cp->name);
281			goto bad;
282		}
283	}
284	wdc_init_shadow_regs(wdc_cp);
285	wdr->data32iot = wdr->cmd_iot;
286	wdr->data32ioh = wdr->cmd_iohs[0];
287
288
289	wdr->sata_iot = sc->sc_ba5_st;
290	wdr->sata_baseioh = sc->sc_ba5_sh;
291	if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
292	    (wdc_cp->ch_channel << 8) + SVWSATA_SSTATUS, 1,
293	    &wdr->sata_status) != 0) {
294		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
295		    "couldn't map channel %d sata_status regs\n",
296		    wdc_cp->ch_channel);
297		goto bad;
298	}
299	if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
300	    (wdc_cp->ch_channel << 8) + SVWSATA_SERROR, 1,
301	    &wdr->sata_error) != 0) {
302		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
303		   "couldn't map channel %d sata_error regs\n",
304		    wdc_cp->ch_channel);
305		goto bad;
306	}
307	if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
308	    (wdc_cp->ch_channel << 8) + SVWSATA_SCONTROL, 1,
309	    &wdr->sata_control) != 0) {
310		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
311		    "couldn't map channel %d sata_control regs\n",
312		    wdc_cp->ch_channel);
313		goto bad;
314	}
315
316	wdcattach(wdc_cp);
317	return;
318
319 bad:
320	cp->ata_channel.ch_flags |= ATACH_DISABLED;
321}
322