rtsx_pci.c revision 1.11 
1/*	$NetBSD: rtsx_pci.c,v 1.11 2025/01/18 08:12:45 mrg 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 1.11 2025/01/18 08:12:45 mrg Exp $");
24
25#include <sys/param.h>
26#include <sys/device.h>
27#include <sys/systm.h>
28#include <sys/pmf.h>
29
30#include <dev/pci/pcivar.h>
31#include <dev/pci/pcidevs.h>
32
33#include <dev/ic/rtsxreg.h>
34#include <dev/ic/rtsxvar.h>
35
36#include <dev/sdmmc/sdmmcvar.h>
37
38#define RTSX_PCI_BAR		0x10
39#define RTSX_PCI_BAR_525A	0x14
40
41struct rtsx_pci_softc {
42	struct rtsx_softc sc;
43	pci_chipset_tag_t sc_pc;
44	void *sc_ih;
45
46	pci_intr_handle_t *sc_pihp;
47};
48
49static int rtsx_pci_match(device_t , cfdata_t, void *);
50static void rtsx_pci_attach(device_t, device_t, void *);
51static int rtsx_pci_detach(device_t, int);
52
53CFATTACH_DECL_NEW(rtsx_pci, sizeof(struct rtsx_pci_softc),
54    rtsx_pci_match, rtsx_pci_attach, rtsx_pci_detach, NULL);
55
56#ifdef RTSX_DEBUG
57extern int rtsxdebug;
58#define DPRINTF(n,s)	do { if ((n) <= rtsxdebug) printf s; } while (0)
59#else
60#define DPRINTF(n,s)	/**/
61#endif
62
63static int
64rtsx_pci_match(device_t parent, cfdata_t cf, void *aux)
65{
66	struct pci_attach_args *pa = aux;
67
68	/*
69	 * Explicitly match the UNDEFINED device class only. Some RTS5209
70	 * devices advertise a SYSTEM/SDHC class in addition to the UNDEFINED
71	 * device class. Let sdhc(4) handle the SYSTEM/SDHC ones.
72	 */
73	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_REALTEK ||
74	    PCI_CLASS(pa->pa_class) != PCI_CLASS_UNDEFINED)
75		return 0;
76
77	switch (PCI_PRODUCT(pa->pa_id)) {
78	case PCI_PRODUCT_REALTEK_RTS5209:
79	case PCI_PRODUCT_REALTEK_RTS5227:
80	case PCI_PRODUCT_REALTEK_RTS5229:
81	case PCI_PRODUCT_REALTEK_RTS522A:
82	case PCI_PRODUCT_REALTEK_RTS5249:
83	case PCI_PRODUCT_REALTEK_RTS525A:
84	case PCI_PRODUCT_REALTEK_RTL8402:
85	case PCI_PRODUCT_REALTEK_RTL8411:
86	case PCI_PRODUCT_REALTEK_RTL8411B:
87		return 1;
88	}
89
90	return 0;
91}
92
93static void
94rtsx_pci_attach(device_t parent, device_t self, void *aux)
95{
96	struct rtsx_pci_softc *sc = device_private(self);
97	struct pci_attach_args *pa = (struct pci_attach_args *)aux;
98	pci_chipset_tag_t pc = pa->pa_pc;
99	pcitag_t tag = pa->pa_tag;
100	pcireg_t reg;
101	char const *intrstr;
102	bus_space_tag_t iot;
103	bus_space_handle_t ioh;
104	bus_size_t size;
105	uint32_t flags;
106	int bar = RTSX_PCI_BAR;
107	char intrbuf[PCI_INTRSTR_LEN];
108
109	sc->sc.sc_dev = self;
110	sc->sc_pc = pc;
111
112	switch (PCI_PRODUCT(pa->pa_id)) {
113	case PCI_PRODUCT_REALTEK_RTS5209:
114		flags = RTSX_F_5209;
115		break;
116	case PCI_PRODUCT_REALTEK_RTS5227:
117		flags = RTSX_F_5227;
118		break;
119	case PCI_PRODUCT_REALTEK_RTS5229:
120	case PCI_PRODUCT_REALTEK_RTS5249:
121		flags = RTSX_F_5229;
122		break;
123	case PCI_PRODUCT_REALTEK_RTS525A:
124		flags = RTSX_F_525A;
125		bar = RTSX_PCI_BAR_525A;
126		break;
127	case PCI_PRODUCT_REALTEK_RTL8402:
128		flags = RTSX_F_8402;
129		break;
130	case PCI_PRODUCT_REALTEK_RTL8411:
131		flags = RTSX_F_8411;
132		break;
133	case PCI_PRODUCT_REALTEK_RTL8411B:
134		flags = RTSX_F_8411B;
135		break;
136	default:
137		flags = 0;
138		break;
139	}
140
141	pci_aprint_devinfo(pa, NULL);
142
143	if ((pci_conf_read(pc, tag, RTSX_CFG_PCI) & RTSX_CFG_ASIC) != 0) {
144		aprint_error_dev(self, "no asic\n");
145		return;
146	}
147
148	if (pci_mapreg_map(pa, bar, PCI_MAPREG_TYPE_MEM, 0,
149	    &iot, &ioh, NULL, &size)) {
150		aprint_error_dev(self, "couldn't map registers\n");
151		return;
152	}
153
154	if (pci_intr_alloc(pa, &sc->sc_pihp, NULL, 0)) {
155		aprint_error_dev(self, "couldn't map interrupt\n");
156		return;
157	}
158	intrstr = pci_intr_string(pc, sc->sc_pihp[0], intrbuf, sizeof(intrbuf));
159	sc->sc_ih = pci_intr_establish_xname(pc, sc->sc_pihp[0], IPL_SDMMC,
160	    rtsx_intr, &sc->sc, device_xname(self));
161	if (sc->sc_ih == NULL) {
162		aprint_error_dev(self, "couldn't establish interrupt\n");
163		return;
164	}
165	aprint_normal_dev(self, "interrupting at %s\n", intrstr);
166
167	/* Enable the device */
168	reg = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
169	reg |= PCI_COMMAND_MASTER_ENABLE;
170	pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, reg);
171
172	/* Power up the device */
173	pci_set_powerstate(pc, tag, PCI_PMCSR_STATE_D0);
174
175	if (rtsx_attach(&sc->sc, iot, ioh, size, pa->pa_dmat, flags) != 0) {
176		aprint_error_dev(self, "couldn't initialize chip\n");
177		return;
178	}
179
180	if (!pmf_device_register1(self, rtsx_suspend, rtsx_resume,
181	    rtsx_shutdown))
182		aprint_error_dev(self, "couldn't establish powerhook\n");
183}
184
185static int
186rtsx_pci_detach(device_t self, int flags)
187{
188	struct rtsx_pci_softc *sc = device_private(self);
189	int rv;
190
191	rv = rtsx_detach(&sc->sc, flags);
192	if (rv)
193		return rv;
194
195	pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
196	pci_intr_release(sc->sc_pc, sc->sc_pihp, 1);
197
198	return 0;
199}
200