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author | benno <benno@FreeBSD.org> | 2002-07-09 13:27:58 +0000 |
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committer | benno <benno@FreeBSD.org> | 2002-07-09 13:27:58 +0000 |
commit | 3e835e4704f3a243ddba46885defc631314f807d (patch) | |
tree | 13b39951d4f50a3c82af393514b97694279bfcae /sys/powerpc | |
parent | 22c445eb6fd40cd747917e95c97163266a879184 (diff) | |
download | FreeBSD-src-3e835e4704f3a243ddba46885defc631314f807d.zip FreeBSD-src-3e835e4704f3a243ddba46885defc631314f807d.tar.gz |
OpenFirmware PCI support code.
This and the sparc64 equivalent should probably be merged at some point.
Diffstat (limited to 'sys/powerpc')
-rw-r--r-- | sys/powerpc/ofw/ofw_pci.c | 239 | ||||
-rw-r--r-- | sys/powerpc/ofw/ofw_pci.h | 34 |
2 files changed, 273 insertions, 0 deletions
diff --git a/sys/powerpc/ofw/ofw_pci.c b/sys/powerpc/ofw/ofw_pci.c new file mode 100644 index 0000000..bcfab74 --- /dev/null +++ b/sys/powerpc/ofw/ofw_pci.c @@ -0,0 +1,239 @@ +/* + * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. + * Copyright (c) 1994 Charles M. Hannum. 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Charles M. Hannum. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. + * + * from NetBSD: pci_machdep.c,v 1.18 2001/07/22 11:29:48 wiz Exp + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/conf.h> +#include <sys/kernel.h> + +#include <dev/ofw/openfirm.h> +#include <dev/ofw/ofw_pci.h> + +#include <dev/pci/pcireg.h> +#include <dev/pci/pcivar.h> + +#include <powerpc/ofw/ofw_pci.h> + +#include "pcib_if.h" + +static void fixup_node(device_t, phandle_t); +static int find_node_intr(phandle_t, u_int32_t *, u_int32_t *); + +phandle_t +ofw_pci_find_node(device_t dev) +{ + phandle_t node, nextnode; + u_int reg[5]; + int l, b, s, f; + + for (node = OF_peer(0); node; node = nextnode) { + l = OF_getprop(node, "assigned-addresses", reg, sizeof(reg)); + if (l > 4) { + b = (reg[0] >> 16) & 0xff; + s = (reg[0] >> 11) & 0x1f; + f = (reg[0] >> 8) & 0x07; + + if (b == pci_get_bus(dev) && s == pci_get_slot(dev) && + f == pci_get_function(dev)) + return (node); + } + + if ((nextnode = OF_child(node))) + continue; + while (node) { + if ((nextnode = OF_peer(node)) != 0) + break; + node = OF_parent(node); + } + } + + return (0); +} + +void +ofw_pci_fixup(device_t dev, u_int bus, phandle_t parentnode) +{ + phandle_t node, nextnode, childnode; + u_int32_t busrange[2]; + int sz; + + for (node = parentnode; node; node = nextnode) { + sz = OF_getprop(node, "bus-range", busrange, 8); + if (sz != 8 || busrange[0] != device_get_unit(dev)) { + for (childnode = OF_child(node); childnode; + childnode = OF_peer(childnode)) { + fixup_node(dev, childnode); + } + } + + if ((nextnode = OF_child(node)) != 0) + continue; + while ((nextnode = OF_peer(node)) == 0) { + node = OF_parent(node); + if (node == parentnode) + return; + } + } +} + +static void +fixup_node(device_t dev, phandle_t node) +{ + u_int32_t csr, intr, irqs[4]; + struct ofw_pci_register addr[8]; + int len, i; + + len = OF_getprop(node, "assigned-addresses", addr, sizeof(addr)); + if (len < (int)sizeof(struct ofw_pci_register)) { + return; + } + + csr = PCIB_READ_CONFIG(dev, OFW_PCI_PHYS_HI_BUS(addr[0].phys_hi), + OFW_PCI_PHYS_HI_DEVICE(addr[0].phys_hi), + OFW_PCI_PHYS_HI_FUNCTION(addr[0].phys_hi), PCIR_COMMAND, 4); + csr &= ~(PCIM_CMD_PORTEN | PCIM_CMD_MEMEN); + + for (i = 0; i < len / sizeof(struct ofw_pci_register); i++) { + switch (addr[i].phys_hi & OFW_PCI_PHYS_HI_SPACEMASK) { + case OFW_PCI_PHYS_HI_SPACE_IO: + csr |= PCIM_CMD_PORTEN; + break; + case OFW_PCI_PHYS_HI_SPACE_MEM32: + csr |= PCIM_CMD_MEMEN; + break; + } + } + + PCIB_WRITE_CONFIG(dev, OFW_PCI_PHYS_HI_BUS(addr[0].phys_hi), + OFW_PCI_PHYS_HI_DEVICE(addr[0].phys_hi), + OFW_PCI_PHYS_HI_FUNCTION(addr[0].phys_hi), PCIR_COMMAND, csr, 4); + + if (find_node_intr(node, &addr[0].phys_hi, irqs) != -1) { + intr = PCIB_READ_CONFIG(dev, + OFW_PCI_PHYS_HI_BUS(addr[0].phys_hi), + OFW_PCI_PHYS_HI_DEVICE(addr[0].phys_hi), + OFW_PCI_PHYS_HI_FUNCTION(addr[0].phys_hi), PCIR_INTLINE, 2); + intr &= ~(0xff); + intr |= irqs[0] & 0xff; + PCIB_WRITE_CONFIG(dev, + OFW_PCI_PHYS_HI_BUS(addr[0].phys_hi), + OFW_PCI_PHYS_HI_DEVICE(addr[0].phys_hi), + OFW_PCI_PHYS_HI_FUNCTION(addr[0].phys_hi), PCIR_INTLINE, + intr, 2); + } + +} + +static int +find_node_intr(phandle_t node, u_int32_t *addr, u_int32_t *intr) +{ + phandle_t parent, iparent; + int len, mlen, match, i; + u_int32_t map[160], *mp, imask[8], maskedaddr[8], icells; + char name[32]; + + len = OF_getprop(node, "AAPL,interrupts", intr, 4); + if (len == 4) { + return (len); + } + + parent = OF_parent(node); + len = OF_getprop(parent, "interrupt-map", map, sizeof(map)); + mlen = OF_getprop(parent, "interrupt-map-mask", imask, sizeof(imask)); + + if (len == -1 || mlen == -1) + goto nomap; + + /* mask addr by "interrupt-map-mask" */ + bcopy(addr, maskedaddr, mlen); + for (i = 0; i < mlen / 4; i++) + maskedaddr[i] &= imask[i]; + + mp = map; + while (len > mlen) { + match = bcmp(maskedaddr, mp, mlen); + mp += mlen / 4; + len -= mlen; + + /* + * We must read "#interrupt-cells" for each time because + * interrupt-parent may be different. + */ + iparent = *mp++; + len -= 4; + if (OF_getprop(iparent, "#interrupt-cells", &icells, 4) != 4) + goto nomap; + + /* Found. */ + if (match == 0) { + bcopy(mp, intr, icells * 4); + return (icells * 4); + } + + mp += icells; + len -= icells * 4; + } + +nomap: + /* + * If the node has no interrupt property and the parent is a PCI + * bridge, use the parent's interrupt. This occurs on a PCI slot. + */ + bzero(name, sizeof(name)); + OF_getprop(parent, "name", name, sizeof(name)); + if (strcmp(name, "pci-bridge") == 0) { + len = OF_getprop(parent, "AAPL,interrupts", intr, 4); + if (len == 4) { + return (len); + } + + /* + * XXX I don't know what is the correct local address. + * XXX Use the first entry for now. + */ + len = OF_getprop(parent, "interrupt-map", map, sizeof(map)); + if (len >= 36) { + addr = &map[5]; + return (find_node_intr(parent, addr, intr)); + } + } + + /* XXX This may be wrong... */ + len = OF_getprop(node, "interrupts", intr, 4); + if (len == 4) { + return (len); + } + + return (-1); +} diff --git a/sys/powerpc/ofw/ofw_pci.h b/sys/powerpc/ofw/ofw_pci.h new file mode 100644 index 0000000..4661152 --- /dev/null +++ b/sys/powerpc/ofw/ofw_pci.h @@ -0,0 +1,34 @@ +/* + * Copyright (C) 2002 Benno Rice. + * 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 Benno Rice ``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 TOOLS GMBH 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. + * + * $FreeBSD$ + */ + +#ifndef _POWERPC_OFW_PCI_H_ +#define _POWERPC_OFW_PCI_H_ + +phandle_t ofw_pci_find_node(device_t); +void ofw_pci_fixup(device_t, u_int, phandle_t); + +#endif /* _POWERPC_OFW_PCI_H_ */ |