1 /* $OpenBSD: ufshci_pci.c,v 1.5 2024/10/08 00:46:29 jsg 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 45 const struct cfattach ufshci_pci_ca = { 46 sizeof(struct ufshci_pci_softc), 47 ufshci_pci_match, 48 ufshci_pci_attach, 49 ufshci_pci_detach, 50 ufshci_activate 51 }; 52 53 int 54 ufshci_pci_match(struct device *parent, void *match, void *aux) 55 { 56 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 57 58 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE && 59 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_UFS && 60 PCI_INTERFACE(pa->pa_class) == UFSHCI_PCI_INTERFACE) 61 return 1; 62 63 return 0; 64 } 65 66 void 67 ufshci_pci_attach(struct device *parent, struct device *self, void *aux) 68 { 69 struct ufshci_pci_softc *psc = (struct ufshci_pci_softc *)self; 70 struct ufshci_softc *sc = &psc->psc_ufshci; 71 struct pci_attach_args *pa = aux; 72 pcireg_t maptype; 73 pci_intr_handle_t ih; 74 75 psc->psc_pc = pa->pa_pc; 76 sc->sc_dmat = pa->pa_dmat; 77 78 /* Map registers */ 79 maptype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, UFSHCI_PCI_BAR); 80 if (pci_mapreg_map(pa, UFSHCI_PCI_BAR, maptype, 0, &sc->sc_iot, 81 &sc->sc_ioh, NULL, &sc->sc_ios, 0) != 0) { 82 printf(": can't map registers\n"); 83 return; 84 } 85 86 /* Map interrupt */ 87 if (pci_intr_map(pa, &ih) != 0) { 88 printf(": can't map interrupt\n"); 89 return; 90 } 91 printf(": %s", pci_intr_string(pa->pa_pc, ih)); 92 93 /* Establish interrupt */ 94 psc->psc_ih = pci_intr_establish(psc->psc_pc, ih, IPL_BIO, ufshci_intr, 95 sc, sc->sc_dev.dv_xname); 96 if (psc->psc_ih == NULL) { 97 printf(": can't establish interrupt\n"); 98 return; 99 } 100 101 /* Call the driver attach */ 102 ufshci_attach(sc); 103 } 104 105 int 106 ufshci_pci_detach(struct device *self, int flags) 107 { 108 return 0; 109 } 110