/* $NetBSD: arpci.c,v 1.5 2015/10/02 05:22:51 msaitoh Exp $ */ /*- * Copyright (c) 2011 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Matt Thomas of 3am Software Foundry. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: arpci.c,v 1.5 2015/10/02 05:22:51 msaitoh Exp $"); #include #include #include #include #include #include #include #define PCI_CMD_CFG_READ 0xa #define PCI_CMD_CFG_WRITE 0xb struct arpci_softc { device_t sc_dev; bus_dma_tag_t sc_dmat; bus_space_tag_t sc_bst; bus_space_handle_t sc_bsh; struct mips_bus_space sc_memt; struct mips_pci_chipset sc_pc; bool sc_pcie; u_int sc_pba_flags; }; static void arpci_bus_mem_init(bus_space_tag_t, void *); static void arpci_attach_hook(device_t parent, device_t self, struct pcibus_attach_args *pba) { } static int arpci_bus_maxdevs(void *v, int busno) { struct arpci_softc * const sc = v; if (busno == 0) return (sc->sc_pcie ? 1 : 22); return 32; } static pcitag_t arpci_make_tag(void *v, int bus, int dev, int func) { if (bus == 0 && dev == 0) { /* * Local access */ return (func << 8); } if (bus == 0 && dev < 21) { /* * Type 0 can only access 21 (32 - 11) devices starting at * device 0 (0 is needed for inbound transactions). * AD[11:32] encodes the idsel for the transaction * (only one bit can be set). * AD[8:11] contains function * AD[2:7] contains the register offset. * AD[0:1] must be zero. */ return (1 << (dev + 11)) | (func << 8); } /* * Type 1 Confugration Transaction. */ return (bus << 16) | (dev << 11) | (func << 8) | 1; } static void arpci_decompose_tag(void *v, pcitag_t tag, int *busp, int *devp, int *funcp) { if (tag & 1) { if (busp) *busp = (tag >> 16) & 255; if (devp) *devp = (tag >> 11) & 31; } else { if (busp) *busp = 0; if (devp) { if (tag & ~0x7ff) { *devp = ffs(tag >> 11) - 1; } else { *devp = 0; } } } if (funcp) *funcp = (tag >> 8) & 7; } static pcireg_t arpci_conf_read(void *v, pcitag_t tag, int reg) { struct arpci_softc * const sc = v; pcireg_t rv = 0xffffffff; if ((unsigned int)reg >= PCI_CONF_SIZE) return rv; if ((tag & 0x00ff0001) == 1) { KASSERT(((tag >> 11) & 31) > 20); /* * This was a type 0 transaction for a device > 20 which * we can't support. */ return rv; } tag |= reg & -4; #if 0 bus_space_read_4(sc->sc_bst, sc->sc_bsh, AR7100_PCI_ERROR); bus_space_write_4(sc->sc_bst, sc->sc_bsh, AR7100_PCI_ERROR, bus_space_read_4(sc->sc_bst, sc->sc_bsh, AR7100_PCI_ERROR) & 3); #endif bus_space_handle_t addr = sc->sc_bsh; if ((tag & ~0x7fe) == 0) { bus_space_write_4(sc->sc_bst, sc->sc_bsh, AR7100_PCI_LCL_CFG_CMD, AR7100_PCI_LCL_CFG_CMD_READ | tag); addr += AR7100_PCI_LCL_CFG_RDATA; printf("%s: tag %#lx: ", __func__, tag); } else { bus_space_write_4(sc->sc_bst, sc->sc_bsh, AR7100_PCI_CFG_ADDR, tag); bus_space_write_4(sc->sc_bst, sc->sc_bsh, AR7100_PCI_CFG_CMD, PCI_CMD_CFG_READ); addr += AR7100_PCI_CFG_RDATA; printf("%s: AD[0:31] 0x%08lx: ", __func__, tag); } rv = kfetch_32((void *)addr, 0xffffffff); printf("%#x\n", rv); return rv; } static void arpci_conf_write(void *v, pcitag_t tag, int reg, pcireg_t data) { struct arpci_softc * const sc = v; if ((unsigned int)reg >= PCI_CONF_SIZE) return; if ((tag & 0x00ff0001) == 1) { KASSERT(((tag >> 11) & 31) > 20); /* * This was a type 0 transaction for a device > 20 which * we can't support. */ return; } tag |= reg & -4; if ((tag & ~0x7fe) == 0) { bus_space_write_4(sc->sc_bst, sc->sc_bsh, AR7100_PCI_LCL_CFG_CMD, AR7100_PCI_LCL_CFG_CMD_WRITE | tag); bus_space_write_4(sc->sc_bst, sc->sc_bsh, AR7100_PCI_LCL_CFG_WDATA, data); } else { bus_space_write_4(sc->sc_bst, sc->sc_bsh, AR7100_PCI_CFG_ADDR, tag); bus_space_write_4(sc->sc_bst, sc->sc_bsh, AR7100_PCI_CFG_CMD, PCI_CMD_CFG_WRITE); bus_space_write_4(sc->sc_bst, sc->sc_bsh, AR7100_PCI_CFG_WDATA, data); } } static int arpci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) { return EINVAL; } static const char * arpci_intr_string(void *v, pci_intr_handle_t ih, char *buf, size_t len) { snprintf(buf, len, "fixme!"); return buf; } static const struct evcnt * arpci_intr_evcnt(void *v, pci_intr_handle_t ih) { return NULL; } static void * arpci_intr_establish(void *v, pci_intr_handle_t ih, int ipl, int (*func)(void *), void *arg) { return NULL; } static void arpci_intr_disestablish(void *v, void *cookie) { } static void arpci_conf_interrupt(void *v, int bus, int dev, int func, int swiz, int *ilinep) { } static void arpci_chipset_init(struct arpci_softc *sc) { pci_chipset_tag_t pc = &sc->sc_pc; pc->pc_conf_v = sc; pc->pc_attach_hook = arpci_attach_hook; pc->pc_bus_maxdevs = arpci_bus_maxdevs; pc->pc_make_tag = arpci_make_tag; pc->pc_decompose_tag = arpci_decompose_tag; pc->pc_conf_read = arpci_conf_read; pc->pc_conf_write = arpci_conf_write; pc->pc_intr_v = sc; pc->pc_intr_map = arpci_intr_map; pc->pc_intr_string = arpci_intr_string; pc->pc_intr_evcnt = arpci_intr_evcnt; pc->pc_intr_establish = arpci_intr_establish; pc->pc_intr_disestablish = arpci_intr_disestablish; pc->pc_conf_interrupt = arpci_conf_interrupt; #ifdef __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH //pc->pc_pciide_compat_intr_establish = arpci_pciide_compat_intr_establish; #endif } static int arpci_match(device_t parent, cfdata_t cf, void *aux) { struct arbus_attach_args * const aa = aux; bus_space_handle_t bsh; if (strcmp(aa->aa_name, cf->cf_name) != 0) return 0; if (bus_space_map(aa->aa_bst, aa->aa_addr, aa->aa_size, 0, &bsh)) return 0; bus_space_unmap(aa->aa_bst, bsh, aa->aa_size); return 1; } static void arpci_attach(device_t parent, device_t self, void *aux) { struct arbus_attach_args * const aa = aux; struct arpci_softc * const sc = device_private(self); sc->sc_dev = self; sc->sc_bst = aa->aa_bst; sc->sc_dmat = aa->aa_dmat; sc->sc_pcie = (strcmp(device_cfdata(self)->cf_name, "arpcie") == 0); if (bus_space_map(aa->aa_bst, aa->aa_addr, aa->aa_size, 0, &sc->sc_bsh)) { aprint_error(": failed to map registers\n"); return; } aprint_normal(": PCI%s bus\n", (sc->sc_pcie ? "-Express x1" : "")); arpci_bus_mem_init(&sc->sc_memt, sc); arpci_chipset_init(sc); sc->sc_pba_flags |= PCI_FLAGS_MEM_OKAY; struct pcibus_attach_args pba; memset(&pba, 0, sizeof(pba)); pba.pba_flags = sc->sc_pba_flags; if (pba.pba_flags & PCI_FLAGS_MEM_OKAY) pba.pba_memt = &sc->sc_memt; pba.pba_dmat = aa->aa_dmat; pba.pba_pc = &sc->sc_pc; pba.pba_bus = 0; config_found_ia(self, "pcibus", &pba, pcibusprint); } CFATTACH_DECL_NEW(arpci, sizeof(struct arpci_softc), arpci_match, arpci_attach, NULL, NULL); CFATTACH_DECL_NEW(arpcie, sizeof(struct arpci_softc), arpci_match, arpci_attach, NULL, NULL); #define CHIP arpci #define CHIP_LITTLE_ENDIAN /* defined */ #define CHIP_MEM /* defined */ #define CHIP_EXTENT /* defined */ #define CHIP_EX_MALLOC_SAFE(v) true #define CHIP_W1_BUS_START(v) 0x10000000UL #define CHIP_W1_BUS_END(v) 0x16ffffffUL #define CHIP_W1_SYS_START(v) CHIP_W1_BUS_START(v) #define CHIP_W1_SYS_END(v) CHIP_W1_BUS_END(v) #include