1 /* $OpenBSD: rtsx_pci.c,v 1.16 2023/04/13 15:07:43 miod Exp $ */
2
3 /*
4 * Copyright (c) 2006 Uwe Stuehler <uwe@openbsd.org>
5 * Copyright (c) 2012 Stefan Sperling <stsp@openbsd.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 #include <sys/param.h>
21 #include <sys/device.h>
22 #include <sys/systm.h>
23
24 #include <dev/pci/pcivar.h>
25 #include <dev/pci/pcidevs.h>
26 #include <dev/ic/rtsxreg.h>
27 #include <dev/ic/rtsxvar.h>
28 #include <dev/sdmmc/sdmmcvar.h>
29
30 #define RTSX_PCI_BAR 0x10
31 #define RTSX_PCI_BAR_525A 0x14
32
33 struct rtsx_pci_softc {
34 struct rtsx_softc sc;
35 void *sc_ih;
36 };
37
38 int rtsx_pci_match(struct device *, void *, void *);
39 void rtsx_pci_attach(struct device *, struct device *, void *);
40
41 const struct cfattach rtsx_pci_ca = {
42 sizeof(struct rtsx_pci_softc), rtsx_pci_match, rtsx_pci_attach,
43 NULL, rtsx_activate
44 };
45
46 int
rtsx_pci_match(struct device * parent,void * match,void * aux)47 rtsx_pci_match(struct device *parent, void *match, void *aux)
48 {
49 struct pci_attach_args *pa = aux;
50
51 /*
52 * Explicitly match the UNDEFINED device class only. Some RTS5209
53 * devices advertise a SYSTEM/SDHC class in addition to the UNDEFINED
54 * device class. Let sdhc(4) handle the SYSTEM/SDHC ones.
55 */
56 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_REALTEK ||
57 PCI_CLASS(pa->pa_class) != PCI_CLASS_UNDEFINED)
58 return 0;
59
60 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RTS5209 ||
61 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RTS5227 ||
62 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RTS5229 ||
63 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RTS522A ||
64 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RTS5249 ||
65 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RTS525A ||
66 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RTL8402 ||
67 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RTL8411 ||
68 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RTL8411B)
69 return 1;
70
71 return 0;
72 }
73
74 void
rtsx_pci_attach(struct device * parent,struct device * self,void * aux)75 rtsx_pci_attach(struct device *parent, struct device *self, void *aux)
76 {
77 struct rtsx_pci_softc *sc = (struct rtsx_pci_softc *)self;
78 struct pci_attach_args *pa = aux;
79 pci_intr_handle_t ih;
80 char const *intrstr;
81 bus_space_tag_t iot;
82 bus_space_handle_t ioh;
83 bus_size_t size;
84 int flags;
85 int bar = RTSX_PCI_BAR;
86 pcireg_t type;
87
88 if ((pci_conf_read(pa->pa_pc, pa->pa_tag, RTSX_CFG_PCI)
89 & RTSX_CFG_ASIC) != 0) {
90 printf("%s: no asic\n", sc->sc.sc_dev.dv_xname);
91 return;
92 }
93
94 if (pci_intr_map_msi(pa, &ih) && pci_intr_map(pa, &ih)) {
95 printf(": can't map interrupt\n");
96 return;
97 }
98
99 intrstr = pci_intr_string(pa->pa_pc, ih);
100 sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_SDMMC,
101 rtsx_intr, sc, sc->sc.sc_dev.dv_xname);
102 if (sc->sc_ih == NULL) {
103 printf(": can't establish interrupt\n");
104 return;
105 }
106 printf(": %s\n", intrstr);
107
108 switch (PCI_PRODUCT(pa->pa_id)) {
109 case PCI_PRODUCT_REALTEK_RTS5209:
110 flags = RTSX_F_5209;
111 break;
112 case PCI_PRODUCT_REALTEK_RTS5229:
113 case PCI_PRODUCT_REALTEK_RTS5249:
114 flags = RTSX_F_5229;
115 break;
116 case PCI_PRODUCT_REALTEK_RTS525A:
117 flags = RTSX_F_525A;
118 bar = RTSX_PCI_BAR_525A;
119 break;
120 default:
121 flags = 0;
122 break;
123 }
124
125 type = pci_mapreg_type(pa->pa_pc, pa->pa_tag, bar);
126 if (pci_mapreg_info(pa->pa_pc, pa->pa_tag, bar, type, NULL, NULL,
127 NULL) != 0) {
128 printf("%s: can't find registers\n", sc->sc.sc_dev.dv_xname);
129 return;
130 }
131 if (pci_mapreg_map(pa, bar, type, 0, &iot, &ioh, NULL, &size, 0)) {
132 printf("%s: can't map registers\n", sc->sc.sc_dev.dv_xname);
133 return;
134 }
135
136 pci_set_powerstate(pa->pa_pc, pa->pa_tag, PCI_PMCSR_STATE_D0);
137
138 if (rtsx_attach(&sc->sc, iot, ioh, size, pa->pa_dmat, flags) != 0)
139 printf("%s: can't initialize chip\n", sc->sc.sc_dev.dv_xname);
140 }
141