1 /* $OpenBSD: ccp_pci.c,v 1.11 2024/06/13 17:59:08 bluhm 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 31 #define CCP_PCI_BAR 0x18 32 33 int ccp_pci_match(struct device *, void *, void *); 34 void ccp_pci_attach(struct device *, struct device *, void *); 35 36 #ifdef __amd64__ 37 void psp_pci_attach(struct device *, struct device *, void *); 38 int psp_pci_intr(void *); 39 #endif 40 41 const struct cfattach ccp_pci_ca = { 42 sizeof(struct ccp_softc), 43 ccp_pci_match, 44 ccp_pci_attach, 45 }; 46 47 static const struct pci_matchid ccp_pci_devices[] = { 48 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_16_CCP }, 49 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_17_CCP_1 }, 50 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_17_CCP_2 }, 51 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_17_1X_CCP }, 52 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_17_3X_CCP }, 53 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_17_90_CCP }, 54 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_19_1X_PSP }, 55 }; 56 57 int 58 ccp_pci_match(struct device *parent, void *match, void *aux) 59 { 60 return (pci_matchbyid(aux, ccp_pci_devices, nitems(ccp_pci_devices))); 61 } 62 63 void 64 ccp_pci_attach(struct device *parent, struct device *self, void *aux) 65 { 66 struct ccp_softc *sc = (struct ccp_softc *)self; 67 struct pci_attach_args *pa = aux; 68 pcireg_t memtype; 69 70 memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, CCP_PCI_BAR); 71 if (PCI_MAPREG_TYPE(memtype) != PCI_MAPREG_TYPE_MEM) { 72 printf(": wrong memory type\n"); 73 return; 74 } 75 76 if (pci_mapreg_map(pa, CCP_PCI_BAR, memtype, 0, 77 &sc->sc_iot, &sc->sc_ioh, NULL, NULL, 0) != 0) { 78 printf(": cannot map registers\n"); 79 return; 80 } 81 82 #ifdef __amd64__ 83 psp_pci_attach(parent, self, aux); 84 #endif 85 86 ccp_attach(sc); 87 } 88 89 #ifdef __amd64__ 90 void 91 psp_pci_attach(struct device *parent, struct device *self, void *aux) 92 { 93 struct ccp_softc *sc = (struct ccp_softc *)self; 94 struct pci_attach_args *pa = aux; 95 pci_intr_handle_t ih; 96 const char *intrstr = NULL; 97 98 sc->sc_dmat = pa->pa_dmat; 99 100 sc->sc_capabilities = bus_space_read_4(sc->sc_iot, sc->sc_ioh, 101 PSP_REG_CAPABILITIES); 102 103 /* clear and disable interrupts */ 104 bus_space_write_4(sc->sc_iot, sc->sc_ioh, PSP_REG_INTEN, 0); 105 bus_space_write_4(sc->sc_iot, sc->sc_ioh, PSP_REG_INTSTS, -1); 106 107 if (pci_intr_map_msix(pa, 0, &ih) != 0 && 108 pci_intr_map_msi(pa, &ih) != 0 && pci_intr_map(pa, &ih) != 0) { 109 printf(": couldn't map interrupt\n"); 110 return; 111 } 112 113 intrstr = pci_intr_string(pa->pa_pc, ih); 114 sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, psp_pci_intr, 115 sc, sc->sc_dev.dv_xname); 116 if (sc->sc_ih != NULL) 117 printf(": %s", intrstr); 118 119 if (!psp_attach(sc)) { 120 pci_intr_disestablish(pa->pa_pc, sc->sc_ih); 121 sc->sc_ih = NULL; 122 return; 123 } 124 125 /* enable interrupts */ 126 bus_space_write_4(sc->sc_iot, sc->sc_ioh, PSP_REG_INTEN, -1); 127 } 128 129 int 130 psp_pci_intr(void *arg) 131 { 132 struct ccp_softc *sc = arg; 133 uint32_t status; 134 135 status = bus_space_read_4(sc->sc_iot, sc->sc_ioh, PSP_REG_INTSTS); 136 bus_space_write_4(sc->sc_iot, sc->sc_ioh, PSP_REG_INTSTS, status); 137 138 if (sc->sc_sev_intr) 139 return (sc->sc_sev_intr(sc, status)); 140 141 return (1); 142 } 143 #endif /* __amd64__ */ 144