/* $NetBSD: vrpciu.c,v 1.22 2015/10/02 05:22:51 msaitoh Exp $ */ /*- * Copyright (c) 2001 Enami Tsugutomo. * All rights reserved. * * 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 REGENTS 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 REGENTS 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: vrpciu.c,v 1.22 2015/10/02 05:22:51 msaitoh Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pci.h" #ifdef DEBUG #define DPRINTF(args) printf args #else #define DPRINTF(args) #endif struct vrpciu_softc { device_t sc_dev; vrip_chipset_tag_t sc_vc; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; void *sc_ih; struct vrc4173bcu_softc *sc_bcu; /* vrc4173bcu */ struct hpcmips_pci_chipset sc_pc; }; static void vrpciu_write(struct vrpciu_softc *, int, u_int32_t); static u_int32_t vrpciu_read(struct vrpciu_softc *, int); #ifdef DEBUG static void vrpciu_write_2(struct vrpciu_softc *, int, u_int16_t) __attribute__((unused)); static u_int16_t vrpciu_read_2(struct vrpciu_softc *, int); #endif static int vrpciu_match(device_t, cfdata_t, void *); static void vrpciu_attach(device_t, device_t, void *); static int vrpciu_intr(void *); static void vrpciu_attach_hook(device_t, device_t, struct pcibus_attach_args *); static int vrpciu_bus_maxdevs(pci_chipset_tag_t, int); static int vrpciu_bus_devorder(pci_chipset_tag_t, int, uint8_t *, int); static pcitag_t vrpciu_make_tag(pci_chipset_tag_t, int, int, int); static void vrpciu_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, int *, int *); static pcireg_t vrpciu_conf_read(pci_chipset_tag_t, pcitag_t, int); static void vrpciu_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t); static int vrpciu_intr_map(const struct pci_attach_args *, pci_intr_handle_t *); static const char *vrpciu_intr_string(pci_chipset_tag_t, pci_intr_handle_t, char *, size_t); static const struct evcnt *vrpciu_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t); static void *vrpciu_intr_establish(pci_chipset_tag_t, pci_intr_handle_t, int, int (*)(void *), void *); static void vrpciu_intr_disestablish(pci_chipset_tag_t, void *); CFATTACH_DECL_NEW(vrpciu, sizeof(struct vrpciu_softc), vrpciu_match, vrpciu_attach, NULL, NULL); static void vrpciu_write(struct vrpciu_softc *sc, int offset, u_int32_t val) { bus_space_write_4(sc->sc_iot, sc->sc_ioh, offset, val); } static u_int32_t vrpciu_read(struct vrpciu_softc *sc, int offset) { return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, offset)); } #ifdef DEBUG static void vrpciu_write_2(struct vrpciu_softc *sc, int offset, u_int16_t val) { bus_space_write_2(sc->sc_iot, sc->sc_ioh, offset, val); } static u_int16_t vrpciu_read_2(struct vrpciu_softc *sc, int offset) { return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, offset)); } #endif static int vrpciu_match(device_t parent, cfdata_t match, void *aux) { return (1); } static void vrpciu_attach(device_t parent, device_t self, void *aux) { struct vrpciu_softc *sc = device_private(self); pci_chipset_tag_t pc = &sc->sc_pc; struct vrip_attach_args *va = aux; #if defined(DEBUG) || NPCI > 0 u_int32_t reg; #endif #if NPCI > 0 struct bus_space_tag_hpcmips *iot; char tmpbuf[16]; struct pcibus_attach_args pba; #endif sc->sc_dev = self; sc->sc_vc = va->va_vc; sc->sc_iot = va->va_iot; if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 0, &sc->sc_ioh)) { printf(": couldn't map io space\n"); return; } sc->sc_ih = vrip_intr_establish(va->va_vc, va->va_unit, 0, IPL_TTY, vrpciu_intr, sc); if (sc->sc_ih == NULL) { printf(": couldn't establish interrupt\n"); return; } /* Enable level 2 interrupt */ vrip_intr_setmask2(va->va_vc, sc->sc_ih, PCIINT_INT0, 1); printf("\n"); #ifdef DEBUG #define DUMP_MAW(sc, name, reg) do { \ printf("%s: %s =\t0x%08x\n", device_xname((sc)->sc_dev), \ (name), (reg)); \ printf("%s:\tIBA/MASK =\t0x%08x/0x%08x (0x%08x - 0x%08x)\n", \ device_xname((sc)->sc_dev), \ reg & VRPCIU_MAW_IBAMASK, VRPCIU_MAW_ADDRMASK(reg), \ VRPCIU_MAW_ADDR(reg), \ VRPCIU_MAW_ADDR(reg) + VRPCIU_MAW_SIZE(reg)); \ printf("%s:\tWINEN =\t0x%08x\n", device_xname((sc)->sc_dev), \ reg & VRPCIU_MAW_WINEN); \ printf("%s:\tPCIADR =\t0x%08x\n", device_xname((sc)->sc_dev), \ VRPCIU_MAW_PCIADDR(reg)); \ } while (0) #define DUMP_TAW(sc, name, reg) do { \ printf("%s: %s =\t\t0x%08x\n", device_xname((sc)->sc_dev), \ (name), (reg)); \ printf("%s:\tMASK =\t0x%08x\n", device_xname((sc)->sc_dev), \ VRPCIU_TAW_ADDRMASK(reg)); \ printf("%s:\tWINEN =\t0x%08x\n", device_xname((sc)->sc_dev), \ reg & VRPCIU_TAW_WINEN); \ printf("%s:\tIBA =\t0x%08x\n", device_xname((sc)->sc_dev), \ VRPCIU_TAW_IBA(reg)); \ } while (0) reg = vrpciu_read(sc, VRPCIU_MMAW1REG); DUMP_MAW(sc, "MMAW1", reg); reg = vrpciu_read(sc, VRPCIU_MMAW2REG); DUMP_MAW(sc, "MMAW2", reg); reg = vrpciu_read(sc, VRPCIU_TAW1REG); DUMP_TAW(sc, "TAW1", reg); reg = vrpciu_read(sc, VRPCIU_TAW2REG); DUMP_TAW(sc, "TAW2", reg); reg = vrpciu_read(sc, VRPCIU_MIOAWREG); DUMP_MAW(sc, "MIOAW", reg); printf("%s: BUSERRAD =\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_BUSERRADREG)); printf("%s: INTCNTSTA =\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_INTCNTSTAREG)); printf("%s: EXACC =\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_EXACCREG)); printf("%s: RECONT =\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_RECONTREG)); printf("%s: PCIEN =\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_ENREG)); printf("%s: CLOCKSEL =\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_CLKSELREG)); printf("%s: TRDYV =\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_TRDYVREG)); printf("%s: CLKRUN =\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read_2(sc, VRPCIU_CLKRUNREG)); printf("%s: IDREG =\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_ID_REG)); reg = vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG); printf("%s: CSR =\t\t0x%08x\n", device_xname(sc->sc_dev), reg); vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG, reg); printf("%s: CSR =\t\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG)); printf("%s: CLASS =\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_CLASS_REG)); printf("%s: BHLC =\t\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_BHLC_REG)); printf("%s: MAIL =\t\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MAILREG)); printf("%s: MBA1 =\t\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA1REG)); printf("%s: MBA2 =\t\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA2REG)); printf("%s: INTR =\t\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG)); #if 0 vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG, vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG) | 0x01); printf("%s: INTR =\t\t0x%08x\n", device_xname(sc->sc_dev), vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG)); #endif #endif pc->pc_dev = sc->sc_dev; pc->pc_attach_hook = vrpciu_attach_hook; pc->pc_bus_maxdevs = vrpciu_bus_maxdevs; pc->pc_bus_devorder = vrpciu_bus_devorder; pc->pc_make_tag = vrpciu_make_tag; pc->pc_decompose_tag = vrpciu_decompose_tag; pc->pc_conf_read = vrpciu_conf_read; pc->pc_conf_write = vrpciu_conf_write; pc->pc_intr_map = vrpciu_intr_map; pc->pc_intr_string = vrpciu_intr_string; pc->pc_intr_evcnt = vrpciu_intr_evcnt; pc->pc_intr_establish = vrpciu_intr_establish; pc->pc_intr_disestablish = vrpciu_intr_disestablish; #if 0 { int i; for (i = 0; i < 8; i++) printf("%s: ID_REG(0, 0, %d) = 0x%08x\n", device_xname(sc->sc_dev), i, pci_conf_read(pc, pci_make_tag(pc, 0, 0, i), PCI_ID_REG)); } #endif #if NPCI > 0 memset(&pba, 0, sizeof(pba)); /* For now, just inherit window mappings set by WinCE. XXX. */ iot = hpcmips_alloc_bus_space_tag(); reg = vrpciu_read(sc, VRPCIU_MIOAWREG); snprintf(tmpbuf, sizeof(tmpbuf), "%s/iot", device_xname(sc->sc_dev)); hpcmips_init_bus_space(iot, (struct bus_space_tag_hpcmips *)sc->sc_iot, tmpbuf, VRPCIU_MAW_ADDR(reg), VRPCIU_MAW_SIZE(reg)); pba.pba_iot = &iot->bst; /* * Just use system bus space tag. It works since WinCE maps * PCI bus space at same offset. But this isn't right thing * of course. XXX. */ pba.pba_memt = sc->sc_iot; pba.pba_dmat = &hpcmips_default_bus_dma_tag.bdt; pba.pba_dmat64 = NULL; pba.pba_bus = 0; pba.pba_bridgetag = NULL; if (platid_match(&platid, &platid_mask_MACH_LASER5_L_BOARD)) { /* * fix PCI device configuration for L-Router. */ /* change IDE controller to native mode */ reg = pci_conf_read(pc, pci_make_tag(pc, 0, 16, 0), PCI_CLASS_REG); reg |= PCIIDE_INTERFACE_PCI(0) << PCI_INTERFACE_SHIFT; reg |= PCIIDE_INTERFACE_PCI(1) << PCI_INTERFACE_SHIFT; pci_conf_write(pc, pci_make_tag(pc, 0, 16, 0), PCI_CLASS_REG, reg); /* fix broken BAR setting of fxp0, fxp1 */ pci_conf_write(pc, pci_make_tag(pc, 0, 0, 0), PCI_MAPREG_START, 0x11100000); pci_conf_write(pc, pci_make_tag(pc, 0, 1, 0), PCI_MAPREG_START, 0x11200000); } pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY | PCI_FLAGS_MRL_OKAY; pba.pba_pc = pc; config_found_ia(self, "pcibus", &pba, pcibusprint); #endif } /* * Handle PCI error interrupts. */ int vrpciu_intr(void *arg) { struct vrpciu_softc *sc = (struct vrpciu_softc *)arg; u_int32_t isr, baddr; isr = vrpciu_read(sc, VRPCIU_INTCNTSTAREG); baddr = vrpciu_read(sc, VRPCIU_BUSERRADREG); printf("%s: status=0x%08x bad addr=0x%08x\n", device_xname(sc->sc_dev), isr, baddr); return ((isr & 0x0f) ? 1 : 0); } void vrpciu_attach_hook(device_t parent, device_t self, struct pcibus_attach_args *pba) { return; } int vrpciu_bus_maxdevs(pci_chipset_tag_t pc, int busno) { return (32); } int vrpciu_bus_devorder(pci_chipset_tag_t pc, int busno, uint8_t *devs, int maxdevs) { int dev, i, n; uint8_t *devn; char priorities[32]; static pcireg_t ids[] = { /* these devices should be attached first */ PCI_ID_CODE(PCI_VENDOR_NEC, PCI_PRODUCT_NEC_VRC4173_BCU), }; n = MIN(32, maxdevs); if (n <= 0) return 0; devn = devs + n; /* scan PCI devices and check the id table */ memset(priorities, 0, sizeof(priorities)); for (dev = 0; dev < 32; dev++) { pcireg_t id; id = pci_conf_read(pc, pci_make_tag(pc, 0, dev, 0), PCI_ID_REG); for (i = 0; i < __arraycount(ids); i++) if (id == ids[i]) priorities[dev] = 1; } /* fill order array */ for (i = 1; 0 <= i; i--) { for (dev = 0; dev < 32; dev++) { if (priorities[dev] == i && devs != devn) *devs++ = dev; } } return n; } pcitag_t vrpciu_make_tag(pci_chipset_tag_t pc, int bus, int device, int function) { return ((bus << 16) | (device << 11) | (function << 8)); } void vrpciu_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, int *fp) { if (bp != NULL) *bp = (tag >> 16) & 0xff; if (dp != NULL) *dp = (tag >> 11) & 0x1f; if (fp != NULL) *fp = (tag >> 8) & 0x07; } pcireg_t vrpciu_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) { struct vrpciu_softc *sc = device_private(pc->pc_dev); u_int32_t val; int bus, device, function; if ((unsigned int)reg >= PCI_CONF_SIZE) return ((pcireg_t) -1); pci_decompose_tag(pc, tag, &bus, &device, &function); if (bus == 0) { if (device > 21) return ((pcitag_t)-1); tag = (1 << (device + 11)) | (function << 8); /* Type 0 */ } else tag |= VRPCIU_CONF_TYPE1; vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg); val = vrpciu_read(sc, VRPCIU_CONFDREG); #if 0 printf("%s: conf_read: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", device_xname(sc->sc_dev), (u_int32_t)tag, reg, val); #endif return (val); } void vrpciu_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t data) { struct vrpciu_softc *sc = device_private(pc->pc_dev); int bus, device, function; #if 0 printf("%s: conf_write: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n", device_xname(sc->sc_dev), (u_int32_t)tag, reg, (u_int32_t)data); #endif if ((unsigned int)reg >= PCI_CONF_SIZE) return; vrpciu_decompose_tag(pc, tag, &bus, &device, &function); if (bus == 0) { if (device > 21) return; tag = (1 << (device + 11)) | (function << 8); /* Type 0 */ } else tag |= VRPCIU_CONF_TYPE1; vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg); vrpciu_write(sc, VRPCIU_CONFDREG, data); } int vrpciu_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) { pci_chipset_tag_t pc = pa->pa_pc; pcitag_t intrtag = pa->pa_intrtag; int bus, dev, func; #ifdef DEBUG int line = pa->pa_intrline; int pin = pa->pa_intrpin; #endif pci_decompose_tag(pc, intrtag, &bus, &dev, &func); DPRINTF(("%s(%d, %d, %d): line = %d, pin = %d\n", device_xname(pc->pc_dev), bus, dev, func, line, pin)); *ihp = CONFIG_HOOK_PCIINTR_ID(bus, dev, func); return (0); } const char * vrpciu_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih, char *buf, size_t len) { snprintf(buf, len, "pciintr %d:%d:%d", CONFIG_HOOK_PCIINTR_BUS((int)ih), CONFIG_HOOK_PCIINTR_DEVICE((int)ih), CONFIG_HOOK_PCIINTR_FUNCTION((int)ih)); return buf; } const struct evcnt * vrpciu_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) { /* XXX for now, no evcnt parent reported */ return (NULL); } void * vrpciu_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level, int (*func)(void *), void *arg) { if (ih == -1) return (NULL); DPRINTF(("vrpciu_intr_establish: %lx\n", ih)); return (config_hook(CONFIG_HOOK_PCIINTR, ih, CONFIG_HOOK_EXCLUSIVE, (int (*)(void *, int, long, void *))func, arg)); } void vrpciu_intr_disestablish(pci_chipset_tag_t pc, void *cookie) { DPRINTF(("vrpciu_intr_disestablish: %p\n", cookie)); config_unhook(cookie); }