1 /* $OpenBSD: ufshci_pci.c,v 1.4 2024/05/24 09:51:13 mglocker Exp $ */ 2 3 /* 4 * Copyright (c) 2024 Marcus Glocker <mglocker@openbsd.org> 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/param.h> 20 #include <sys/systm.h> 21 #include <sys/device.h> 22 23 #include <dev/pci/pcireg.h> 24 #include <dev/pci/pcivar.h> 25 26 #include <scsi/scsi_all.h> 27 #include <scsi/scsiconf.h> 28 29 #include <dev/ic/ufshcivar.h> 30 31 #define UFSHCI_PCI_BAR 0x10 32 #define UFSHCI_PCI_INTERFACE 0x01 33 34 struct ufshci_pci_softc { 35 struct ufshci_softc psc_ufshci; 36 37 pci_chipset_tag_t psc_pc; 38 void *psc_ih; 39 }; 40 41 int ufshci_pci_match(struct device *, void *, void *); 42 void ufshci_pci_attach(struct device *, struct device *, void *); 43 int ufshci_pci_detach(struct device *, int); 44 int ufshci_pci_activate(struct device *, int); 45 46 const struct cfattach ufshci_pci_ca = { 47 sizeof(struct ufshci_pci_softc), 48 ufshci_pci_match, 49 ufshci_pci_attach, 50 ufshci_pci_detach, 51 ufshci_pci_activate 52 }; 53 54 int 55 ufshci_pci_match(struct device *parent, void *match, void *aux) 56 { 57 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 58 59 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE && 60 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_UFS && 61 PCI_INTERFACE(pa->pa_class) == UFSHCI_PCI_INTERFACE) 62 return 1; 63 64 return 0; 65 } 66 67 void 68 ufshci_pci_attach(struct device *parent, struct device *self, void *aux) 69 { 70 struct ufshci_pci_softc *psc = (struct ufshci_pci_softc *)self; 71 struct ufshci_softc *sc = &psc->psc_ufshci; 72 struct pci_attach_args *pa = aux; 73 pcireg_t maptype; 74 pci_intr_handle_t ih; 75 76 psc->psc_pc = pa->pa_pc; 77 sc->sc_dmat = pa->pa_dmat; 78 79 /* Map registers */ 80 maptype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, UFSHCI_PCI_BAR); 81 if (pci_mapreg_map(pa, UFSHCI_PCI_BAR, maptype, 0, &sc->sc_iot, 82 &sc->sc_ioh, NULL, &sc->sc_ios, 0) != 0) { 83 printf(": can't map registers\n"); 84 return; 85 } 86 87 /* Map interrupt */ 88 if (pci_intr_map(pa, &ih) != 0) { 89 printf(": can't map interrupt\n"); 90 return; 91 } 92 printf(": %s", pci_intr_string(pa->pa_pc, ih)); 93 94 /* Establish interrupt */ 95 psc->psc_ih = pci_intr_establish(psc->psc_pc, ih, IPL_BIO, ufshci_intr, 96 sc, sc->sc_dev.dv_xname); 97 if (psc->psc_ih == NULL) { 98 printf(": can't establish interrupt\n"); 99 return; 100 } 101 102 /* Call the driver attach */ 103 ufshci_attach(sc); 104 } 105 106 int 107 ufshci_pci_detach(struct device *self, int flags) 108 { 109 return 0; 110 } 111 112 int 113 ufshci_pci_activate(struct device *self, int act) 114 { 115 struct ufshci_pci_softc *psc = (struct ufshci_pci_softc *)self; 116 117 return ufshci_activate(&psc->psc_ufshci, act); 118 } 119