rtsx_pci.c revision 1.8 
1/*	$NetBSD: rtsx_pci.c,v 1.8 2018/12/09 11:14:02 jdolecek Exp $	*/
2/*	$OpenBSD: rtsx_pci.c,v 1.7 2014/08/19 17:55:03 phessler Exp $	*/
3
4
5/*
6 * Copyright (c) 2006 Uwe Stuehler <uwe@openbsd.org>
7 * Copyright (c) 2012 Stefan Sperling <stsp@openbsd.org>
8 *
9 * Permission to use, copy, modify, and distribute this software for any
10 * purpose with or without fee is hereby granted, provided that the above
11 * copyright notice and this permission notice appear in all copies.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 */
21
22#include <sys/cdefs.h>
23__KERNEL_RCSID(0, "$NetBSD: rtsx_pci.c,v 1.8 2018/12/09 11:14:02 jdolecek Exp $");
24
25#include <sys/param.h>
26#include <sys/device.h>
27#include <sys/systm.h>
28#include <sys/malloc.h>
29#include <sys/pmf.h>
30
31#include <dev/pci/pcivar.h>
32#include <dev/pci/pcidevs.h>
33
34#include <dev/ic/rtsxreg.h>
35#include <dev/ic/rtsxvar.h>
36
37#include <dev/sdmmc/sdmmcvar.h>
38
39#define RTSX_PCI_BAR		0x10
40#define RTSX_PCI_BAR_525A	0x14
41
42struct rtsx_pci_softc {
43	struct rtsx_softc sc;
44	pci_chipset_tag_t sc_pc;
45	void *sc_ih;
46
47	pci_intr_handle_t *sc_pihp;
48};
49
50static int rtsx_pci_match(device_t , cfdata_t, void *);
51static void rtsx_pci_attach(device_t, device_t, void *);
52static int rtsx_pci_detach(device_t, int);
53
54CFATTACH_DECL_NEW(rtsx_pci, sizeof(struct rtsx_pci_softc),
55    rtsx_pci_match, rtsx_pci_attach, rtsx_pci_detach, NULL);
56
57#ifdef RTSX_DEBUG
58extern int rtsxdebug;
59#define DPRINTF(n,s)	do { if ((n) <= rtsxdebug) printf s; } while (0)
60#else
61#define DPRINTF(n,s)	/**/
62#endif
63
64static int
65rtsx_pci_match(device_t parent, cfdata_t cf, void *aux)
66{
67	struct pci_attach_args *pa = aux;
68
69	/*
70	 * Explicitly match the UNDEFINED device class only. Some RTS5902
71	 * devices advertise a SYSTEM/SDHC class in addition to the UNDEFINED
72	 * device class. Let sdhc(4) handle the SYSTEM/SDHC ones.
73	 */
74	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_REALTEK ||
75	    PCI_CLASS(pa->pa_class) != PCI_CLASS_UNDEFINED)
76		return 0;
77
78	switch (PCI_PRODUCT(pa->pa_id)) {
79	case PCI_PRODUCT_REALTEK_RTS5209:
80	case PCI_PRODUCT_REALTEK_RTS5227:
81	case PCI_PRODUCT_REALTEK_RTS5229:
82	case PCI_PRODUCT_REALTEK_RTS525A:
83	case PCI_PRODUCT_REALTEK_RTL8402:
84	case PCI_PRODUCT_REALTEK_RTL8411:
85	case PCI_PRODUCT_REALTEK_RTL8411B:
86		return 1;
87	}
88
89	return 0;
90}
91
92static void
93rtsx_pci_attach(device_t parent, device_t self, void *aux)
94{
95	struct rtsx_pci_softc *sc = device_private(self);
96	struct pci_attach_args *pa = (struct pci_attach_args *)aux;
97	pci_chipset_tag_t pc = pa->pa_pc;
98	pcitag_t tag = pa->pa_tag;
99	pcireg_t reg;
100	char const *intrstr;
101	bus_space_tag_t iot;
102	bus_space_handle_t ioh;
103	bus_size_t size;
104	uint32_t flags;
105	int bar = RTSX_PCI_BAR;
106	char intrbuf[PCI_INTRSTR_LEN];
107
108	sc->sc.sc_dev = self;
109	sc->sc_pc = pc;
110
111	switch (PCI_PRODUCT(pa->pa_id)) {
112	case PCI_PRODUCT_REALTEK_RTS5209:
113		flags = RTSX_F_5209;
114		break;
115	case PCI_PRODUCT_REALTEK_RTS5227:
116		flags = RTSX_F_5227;
117		break;
118	case PCI_PRODUCT_REALTEK_RTS5229:
119		flags = RTSX_F_5229;
120		break;
121	case PCI_PRODUCT_REALTEK_RTS525A:
122		flags = RTSX_F_525A;
123		bar = RTSX_PCI_BAR_525A;
124		break;
125	case PCI_PRODUCT_REALTEK_RTL8402:
126		flags = RTSX_F_8402;
127		break;
128	case PCI_PRODUCT_REALTEK_RTL8411:
129		flags = RTSX_F_8411;
130		break;
131	case PCI_PRODUCT_REALTEK_RTL8411B:
132		flags = RTSX_F_8411B;
133		break;
134	default:
135		flags = 0;
136		break;
137	}
138
139	pci_aprint_devinfo(pa, NULL);
140
141	if ((pci_conf_read(pc, tag, RTSX_CFG_PCI) & RTSX_CFG_ASIC) != 0) {
142		aprint_error_dev(self, "no asic\n");
143		return;
144	}
145
146	if (pci_mapreg_map(pa, bar, PCI_MAPREG_TYPE_MEM, 0,
147	    &iot, &ioh, NULL, &size)) {
148		aprint_error_dev(self, "couldn't map registers\n");
149		return;
150	}
151
152	if (pci_intr_alloc(pa, &sc->sc_pihp, NULL, 0)) {
153		aprint_error_dev(self, "couldn't map interrupt\n");
154		return;
155	}
156	intrstr = pci_intr_string(pc, sc->sc_pihp[0], intrbuf, sizeof(intrbuf));
157	sc->sc_ih = pci_intr_establish_xname(pc, sc->sc_pihp[0], IPL_SDMMC,
158	    rtsx_intr, &sc->sc, device_xname(self));
159	if (sc->sc_ih == NULL) {
160		aprint_error_dev(self, "couldn't establish interrupt\n");
161		return;
162	}
163	aprint_normal_dev(self, "interrupting at %s\n", intrstr);
164
165	/* Enable the device */
166	reg = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
167	reg |= PCI_COMMAND_MASTER_ENABLE;
168	pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, reg);
169
170	/* Power up the device */
171	pci_set_powerstate(pc, tag, PCI_PMCSR_STATE_D0);
172
173	if (rtsx_attach(&sc->sc, iot, ioh, size, pa->pa_dmat, flags) != 0) {
174		aprint_error_dev(self, "couldn't initialize chip\n");
175		return;
176	}
177
178	if (!pmf_device_register1(self, rtsx_suspend, rtsx_resume,
179	    rtsx_shutdown))
180		aprint_error_dev(self, "couldn't establish powerhook\n");
181}
182
183static int
184rtsx_pci_detach(device_t self, int flags)
185{
186	struct rtsx_pci_softc *sc = device_private(self);
187	int rv;
188
189	rv = rtsx_detach(&sc->sc, flags);
190	if (rv)
191		return rv;
192
193	pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
194	pci_intr_release(sc->sc_pc, sc->sc_pihp, 1);
195
196	return 0;
197}
198