diff options
Diffstat (limited to 'sys/dev/siba/siba_pcib.c')
| -rw-r--r-- | sys/dev/siba/siba_pcib.c | 430 |
1 files changed, 0 insertions, 430 deletions
diff --git a/sys/dev/siba/siba_pcib.c b/sys/dev/siba/siba_pcib.c deleted file mode 100644 index 5780e62..0000000 --- a/sys/dev/siba/siba_pcib.c +++ /dev/null @@ -1,430 +0,0 @@ -/*- - * Copyright (c) 2007 Bruce M. Simpson. - * 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 AUTHOR 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 AUTHOR 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. - */ - -/* - * Child driver for PCI host bridge core. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/bus.h> -#include <sys/kernel.h> -#include <sys/module.h> -#include <sys/rman.h> -#include <sys/malloc.h> -#include <sys/endian.h> - -#include <vm/vm.h> -#include <vm/pmap.h> -#include <vm/vm_extern.h> - -#include <machine/bus.h> -#include <machine/cpu.h> -#include <machine/pcb.h> - -#include <dev/pci/pcireg.h> -#include <dev/pci/pcivar.h> -#include <dev/pci/pcib_private.h> - -#include "pcib_if.h" - -#include <dev/siba/siba_ids.h> -#include <dev/siba/sibareg.h> -#include <dev/siba/sibavar.h> -#include <dev/siba/siba_pcibvar.h> - -#ifndef MIPS_MEM_RID -#define MIPS_MEM_RID 0x20 -#endif - -#define SBPCI_SLOTMAX 15 - -#define SBPCI_READ_4(sc, reg) \ - bus_space_write_4((sc)->sc_bt, (sc)->sc_bh, (reg)) - -#define SBPCI_WRITE_4(sc, reg, val) \ - bus_space_write_4((sc)->sc_bt, (sc)->sc_bh, (reg), (val)) - -/* - * PCI Configuration space window (64MB). - * contained in SBTOPCI1 window. - */ -#define SBPCI_CFGBASE 0x0C000000 -#define SBPCI_CFGSIZE 0x01000000 - -/* - * TODO: implement type 1 config space access (ie beyond bus 0) - * we may need to tweak the windows to do this - * TODO: interrupt routing. - * TODO: fully implement bus allocation. - * TODO: implement resource managers. - * TODO: code cleanup. - */ - -static int siba_pcib_activate_resource(device_t, device_t, int, - int, struct resource *); -static struct resource * - siba_pcib_alloc_resource(device_t, device_t, int, int *, - rman_res_t , rman_res_t, rman_res_t, u_int); -static int siba_pcib_attach(device_t); -static int siba_pcib_deactivate_resource(device_t, device_t, int, - int, struct resource *); -static int siba_pcib_maxslots(device_t); -static int siba_pcib_probe(device_t); -static u_int32_t - siba_pcib_read_config(device_t, u_int, u_int, u_int, u_int, - int); -static int siba_pcib_read_ivar(device_t, device_t, int, uintptr_t *); -static int siba_pcib_release_resource(device_t, device_t, int, int, - struct resource *); -static int siba_pcib_route_interrupt(device_t, device_t, int); -static int siba_pcib_setup_intr(device_t, device_t, struct resource *, - int, driver_filter_t *, driver_intr_t *, void *, void **); -static int siba_pcib_teardown_intr(device_t, device_t, struct resource *, - void *); -static void siba_pcib_write_config(device_t, u_int, u_int, u_int, u_int, - u_int32_t, int); -static int siba_pcib_write_ivar(device_t, device_t, int, uintptr_t); - -static int -siba_pcib_probe(device_t dev) -{ - - /* TODO: support earlier cores. */ - /* TODO: Check if PCI host mode is enabled in the SPROM. */ - if (siba_get_vendor(dev) == SIBA_VID_BROADCOM && - siba_get_device(dev) == SIBA_DEVID_PCI) { - device_set_desc(dev, "SiBa-to-PCI host bridge"); - return (BUS_PROBE_DEFAULT); - } - - return (ENXIO); -} - -//extern int rman_debug; - -static int -siba_pcib_attach(device_t dev) -{ - struct siba_pcib_softc *sc = device_get_softc(dev); - int rid; - - /* - * Allocate the resources which the parent bus has already - * determined for us. - */ - rid = MIPS_MEM_RID; /* XXX */ - //rman_debug = 1; - sc->sc_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, - RF_ACTIVE); - if (sc->sc_mem == NULL) { - device_printf(dev, "unable to allocate memory\n"); - return (ENXIO); - } - - sc->sc_bt = rman_get_bustag(sc->sc_mem); - sc->sc_bh = rman_get_bushandle(sc->sc_mem); - - device_printf(dev, "bridge registers addr 0x%08x vaddr %p\n", - (uint32_t)sc->sc_bh, rman_get_virtual(sc->sc_mem)); - - SBPCI_WRITE_4(sc, 0x0000, 0x05); - SBPCI_WRITE_4(sc, 0x0000, 0x0D); - DELAY(150); - SBPCI_WRITE_4(sc, 0x0000, 0x0F); - SBPCI_WRITE_4(sc, 0x0010, 0x01); - DELAY(1); - - bus_space_handle_t sc_cfg_hand; - int error; - - /* - * XXX this doesn't actually do anything on mips; however... should - * we not be mapping to KSEG1? we need to wire down the range. - */ - error = bus_space_map(sc->sc_bt, SBPCI_CFGBASE, SBPCI_CFGSIZE, - 0, &sc_cfg_hand); - if (error) { - device_printf(dev, "cannot map PCI configuration space\n"); - return (ENXIO); - } - device_printf(dev, "mapped pci config space at 0x%08x\n", - (uint32_t)sc_cfg_hand); - - /* - * Setup configuration, io, and dma space windows. - * XXX we need to be able to do type 1 too. - * we probably don't need to be able to do i/o cycles. - */ - - /* I/O read/write window */ - SBPCI_WRITE_4(sc, SIBA_PCICORE_SBTOPCI0, 1); - /* type 0 configuration only */ - SBPCI_WRITE_4(sc, SIBA_PCICORE_SBTOPCI1, 2); - SBPCI_WRITE_4(sc, SIBA_PCICORE_SBTOPCI2, 1 << 30); /* memory only */ - DELAY(500); - - /* XXX resource managers */ - - device_add_child(dev, "pci", -1); - return (bus_generic_attach(dev)); -} - -/* bus functions */ - -static int -siba_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) -{ - struct siba_pcib_softc *sc; - - sc = device_get_softc(dev); - switch (which) { - case PCIB_IVAR_BUS: - *result = sc->sc_bus; - return (0); - } - - return (ENOENT); -} - -static int -siba_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value) -{ - struct siba_pcib_softc *sc; - - sc = device_get_softc(dev); - switch (which) { - case PCIB_IVAR_BUS: - sc->sc_bus = value; - return (0); - } - - return (ENOENT); -} - -static int -siba_pcib_setup_intr(device_t dev, device_t child, struct resource *ires, - int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg, - void **cookiep) -{ - - return (BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, - filt, intr, arg, cookiep)); -} - -static int -siba_pcib_teardown_intr(device_t dev, device_t child, struct resource *vec, - void *cookie) -{ - - return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, vec, cookie)); -} - -static struct resource * -siba_pcib_alloc_resource(device_t bus, device_t child, int type, int *rid, - rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) -{ -#if 1 - - //device_printf(bus, "%s: not yet implemented\n", __func__); - return (NULL); -#else - bus_space_tag_t tag; - struct siba_pcib_softc *sc = device_get_softc(bus); - struct rman *rmanp; - struct resource *rv; - - tag = 0; - rv = NULL; - switch (type) { - case SYS_RES_IRQ: - rmanp = &sc->sc_irq_rman; - break; - - case SYS_RES_MEMORY: - rmanp = &sc->sc_mem_rman; - tag = &sc->sc_pci_memt; - break; - - default: - return (rv); - } - - rv = rman_reserve_resource(rmanp, start, end, count, flags, child); - if (rv != NULL) { - rman_set_rid(rv, *rid); - if (type == SYS_RES_MEMORY) { -#if 0 - rman_set_bustag(rv, tag); - rman_set_bushandle(rv, rman_get_bushandle(sc->sc_mem) + - (rman_get_start(rv) - IXP425_PCI_MEM_HWBASE)); -#endif - } - } - - return (rv); -#endif -} - -static int -siba_pcib_activate_resource(device_t bus, device_t child, int type, int rid, - struct resource *r) -{ - - device_printf(bus, "%s: not yet implemented\n", __func__); - device_printf(bus, "%s called activate_resource\n", - device_get_nameunit(child)); - return (ENXIO); -} - -static int -siba_pcib_deactivate_resource(device_t bus, device_t child, int type, int rid, - struct resource *r) -{ - - device_printf(bus, "%s: not yet implemented\n", __func__); - device_printf(bus, "%s called deactivate_resource\n", - device_get_nameunit(child)); - return (ENXIO); -} - -static int -siba_pcib_release_resource(device_t bus, device_t child, int type, int rid, - struct resource *r) -{ - - device_printf(bus, "%s: not yet implemented\n", __func__); - device_printf(bus, "%s called release_resource\n", - device_get_nameunit(child)); - return (ENXIO); -} - -/* pcib interface functions */ - -static int -siba_pcib_maxslots(device_t dev) -{ - - return (SBPCI_SLOTMAX); -} - -/* - * This needs hacking and fixery. It is currently broke and hangs. - * Debugging it will be tricky; there seems to be no way to enable - * a target abort which would cause a nice target abort. - * Look at linux again? - */ -static u_int32_t -siba_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func, - u_int reg, int bytes) -{ - struct siba_pcib_softc *sc = device_get_softc(dev); - bus_addr_t cfgaddr; - uint32_t cfgtag; - uint32_t val; - - /* XXX anything higher than slot 2 currently seems to hang the bus. - * not sure why this is; look at linux again - */ - if (bus != 0 || slot > 2) { - printf("%s: bad b/s/f %d/%d/%d\n", __func__, bus, slot, func); - return 0xffffffff; // XXX - } - - device_printf(dev, "requested %d bytes from b/s/f %d/%d/%d reg %d\n", - bytes, bus, slot, func, reg); - - /* - * The configuration tag on the broadcom is weird. - */ - SBPCI_WRITE_4(sc, SIBA_PCICORE_SBTOPCI1, 2); /* XXX again??? */ - cfgtag = ((1 << slot) << 16) | (func << 8); - cfgaddr = SBPCI_CFGBASE | cfgtag | (reg & ~3); - - /* cfg space i/o is always 32 bits on this bridge */ - printf("reading 4 bytes from %08x\n", cfgaddr); - val = *(volatile uint32_t *)MIPS_PHYS_TO_KSEG1(cfgaddr); /* XXX MIPS */ - - val = bswap32(val); /* XXX seems to be needed for now */ - - /* swizzle and return what was asked for */ - val &= 0xffffffff >> ((4 - bytes) * 8); - - return (val); -} - -static void -siba_pcib_write_config(device_t dev, u_int bus, u_int slot, - u_int func, u_int reg, u_int32_t val, int bytes) -{ - - /* write to pci configuration space */ - //device_printf(dev, "%s: not yet implemented\n", __func__); -} - -static int -siba_pcib_route_interrupt(device_t bridge, device_t device, int pin) -{ - - //device_printf(bridge, "%s: not yet implemented\n", __func__); - return (-1); -} - -static device_method_t siba_pcib_methods[] = { - /* Device interface */ - DEVMETHOD(device_attach, siba_pcib_attach), - DEVMETHOD(device_probe, siba_pcib_probe), - - /* Bus interface */ - DEVMETHOD(bus_read_ivar, siba_pcib_read_ivar), - DEVMETHOD(bus_write_ivar, siba_pcib_write_ivar), - DEVMETHOD(bus_setup_intr, siba_pcib_setup_intr), - DEVMETHOD(bus_teardown_intr, siba_pcib_teardown_intr), - DEVMETHOD(bus_alloc_resource, siba_pcib_alloc_resource), - DEVMETHOD(bus_activate_resource, siba_pcib_activate_resource), - DEVMETHOD(bus_deactivate_resource, siba_pcib_deactivate_resource), - DEVMETHOD(bus_release_resource, siba_pcib_release_resource), - - /* pcib interface */ - DEVMETHOD(pcib_maxslots, siba_pcib_maxslots), - DEVMETHOD(pcib_read_config, siba_pcib_read_config), - DEVMETHOD(pcib_write_config, siba_pcib_write_config), - DEVMETHOD(pcib_route_interrupt, siba_pcib_route_interrupt), - - DEVMETHOD_END -}; - -static driver_t siba_pcib_driver = { - "pcib", - siba_pcib_methods, - sizeof(struct siba_softc), -}; -static devclass_t siba_pcib_devclass; - -DRIVER_MODULE(siba_pcib, siba, siba_pcib_driver, siba_pcib_devclass, 0, 0); |
