1 /* $OpenBSD: rtsx_pci.c,v 1.3 2013/01/05 15:42:44 stsp 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 #include <sys/malloc.h> 24 25 #include <dev/pci/pcivar.h> 26 #include <dev/pci/pcidevs.h> 27 #include <dev/ic/rtsxreg.h> 28 #include <dev/ic/rtsxvar.h> 29 #include <dev/sdmmc/sdmmcvar.h> 30 31 #define RTSX_PCI_BAR 0x10 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 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 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 RTS5902 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_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RTS5209 && 58 PCI_CLASS(pa->pa_class) == PCI_CLASS_UNDEFINED) 59 return 1; 60 61 return 0; 62 } 63 64 void 65 rtsx_pci_attach(struct device *parent, struct device *self, void *aux) 66 { 67 struct rtsx_pci_softc *sc = (struct rtsx_pci_softc *)self; 68 struct pci_attach_args *pa = aux; 69 pci_intr_handle_t ih; 70 char const *intrstr; 71 bus_space_tag_t iot; 72 bus_space_handle_t ioh; 73 bus_size_t size; 74 75 if ((pci_conf_read(pa->pa_pc, pa->pa_tag, RTSX_CFG_PCI) 76 & RTSX_CFG_ASIC) != 0) { 77 printf("%s: no asic\n", sc->sc.sc_dev.dv_xname); 78 return; 79 } 80 81 if (pci_intr_map_msi(pa, &ih) && pci_intr_map(pa, &ih)) { 82 printf(": can't map interrupt\n"); 83 return; 84 } 85 86 intrstr = pci_intr_string(pa->pa_pc, ih); 87 sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_SDMMC, 88 rtsx_intr, sc, sc->sc.sc_dev.dv_xname); 89 if (sc->sc_ih == NULL) { 90 printf(": can't establish interrupt\n"); 91 return; 92 } 93 printf(": %s\n", intrstr); 94 95 if (pci_mem_find(pa->pa_pc, pa->pa_tag, RTSX_PCI_BAR, 96 NULL, NULL, NULL) != 0) { 97 printf("%s: can't find registers\n", sc->sc.sc_dev.dv_xname); 98 return; 99 } 100 101 if (pci_mapreg_map(pa, RTSX_PCI_BAR, PCI_MAPREG_TYPE_MEM, 0, 102 &iot, &ioh, NULL, &size, 0)) { 103 printf("%s: can't map registers\n", sc->sc.sc_dev.dv_xname); 104 return; 105 } 106 107 pci_set_powerstate(pa->pa_pc, pa->pa_tag, PCI_PMCSR_STATE_D0); 108 109 if (rtsx_attach(&sc->sc, iot, ioh, size, pa->pa_dmat) != 0) 110 printf("%s: can't initialize chip\n", sc->sc.sc_dev.dv_xname); 111 } 112