1 /* $OpenBSD: ccp_pci.c,v 1.13 2024/09/04 07:45:08 jsg Exp $ */ 2 3 /* 4 * Copyright (c) 2018 David Gwynne <dlg@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 #include <sys/timeout.h> 23 24 #include <machine/bus.h> 25 26 #include <dev/pci/pcidevs.h> 27 #include <dev/pci/pcivar.h> 28 29 #include <dev/ic/ccpvar.h> 30 #include <dev/ic/pspvar.h> 31 32 #include "psp.h" 33 34 #define CCP_PCI_BAR 0x18 35 36 int ccp_pci_match(struct device *, void *, void *); 37 void ccp_pci_attach(struct device *, struct device *, void *); 38 39 void ccp_pci_intr_map(struct ccp_softc *, struct pci_attach_args *); 40 void ccp_pci_psp_attach(struct ccp_softc *, struct pci_attach_args *); 41 42 const struct cfattach ccp_pci_ca = { 43 sizeof(struct ccp_softc), 44 ccp_pci_match, 45 ccp_pci_attach, 46 }; 47 48 static const struct pci_matchid ccp_pci_devices[] = { 49 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_16_CCP }, 50 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_17_CCP_1 }, 51 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_17_CCP_2 }, 52 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_17_1X_CCP }, 53 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_17_3X_CCP }, 54 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_17_90_CCP }, 55 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_19_1X_PSP }, 56 }; 57 58 int 59 ccp_pci_match(struct device *parent, void *match, void *aux) 60 { 61 return (pci_matchbyid(aux, ccp_pci_devices, nitems(ccp_pci_devices))); 62 } 63 64 void 65 ccp_pci_attach(struct device *parent, struct device *self, void *aux) 66 { 67 struct ccp_softc *sc = (struct ccp_softc *)self; 68 struct pci_attach_args *pa = aux; 69 pcireg_t memtype; 70 71 memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, CCP_PCI_BAR); 72 if (PCI_MAPREG_TYPE(memtype) != PCI_MAPREG_TYPE_MEM) { 73 printf(": wrong memory type\n"); 74 return; 75 } 76 77 if (pci_mapreg_map(pa, CCP_PCI_BAR, memtype, 0, 78 &sc->sc_iot, &sc->sc_ioh, NULL, NULL, 0) != 0) { 79 printf(": cannot map registers\n"); 80 return; 81 } 82 83 ccp_pci_intr_map(sc, pa); 84 85 ccp_attach(sc); 86 87 ccp_pci_psp_attach(sc, pa); 88 } 89 90 void 91 ccp_pci_intr_map(struct ccp_softc *sc, struct pci_attach_args *pa) 92 { 93 #if NPSP > 0 94 pci_intr_handle_t ih; 95 const char *intrstr = NULL; 96 97 /* clear and disable interrupts */ 98 bus_space_write_4(sc->sc_iot, sc->sc_ioh, PSP_REG_INTEN, 0); 99 bus_space_write_4(sc->sc_iot, sc->sc_ioh, PSP_REG_INTSTS, -1); 100 101 if (pci_intr_map_msix(pa, 0, &ih) != 0 && 102 pci_intr_map_msi(pa, &ih) != 0 && pci_intr_map(pa, &ih) != 0) { 103 printf(": couldn't map interrupt\n"); 104 return; 105 } 106 107 intrstr = pci_intr_string(pa->pa_pc, ih); 108 sc->sc_irqh = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, psp_sev_intr, 109 sc, sc->sc_dev.dv_xname); 110 if (sc->sc_irqh != NULL) 111 printf(": %s", intrstr); 112 #endif 113 } 114 115 void 116 ccp_pci_psp_attach(struct ccp_softc *sc, struct pci_attach_args *pa) 117 { 118 #if NPSP > 0 119 struct psp_attach_args arg; 120 struct device *self = (struct device *)sc; 121 122 memset(&arg, 0, sizeof(arg)); 123 arg.iot = sc->sc_iot; 124 arg.ioh = sc->sc_ioh; 125 arg.dmat = pa->pa_dmat; 126 arg.capabilities = bus_space_read_4(sc->sc_iot, sc->sc_ioh, 127 PSP_REG_CAPABILITIES); 128 129 sc->sc_psp = config_found_sm(self, &arg, pspprint, pspsubmatch); 130 if (sc->sc_psp == NULL) { 131 pci_intr_disestablish(pa->pa_pc, sc->sc_irqh); 132 return; 133 } 134 135 /* enable interrupts */ 136 bus_space_write_4(sc->sc_iot, sc->sc_ioh, PSP_REG_INTEN, -1); 137 #endif 138 } 139