1 /* $NetBSD: pciconf_ofmethod.c,v 1.1 2007/10/25 16:55:51 garbled Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jochen Kunz and Tim Rightnour 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Generic PowerPC functions for talking to a PCI Bridge via the RTAS or 41 * OF methods of the device. 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: pciconf_ofmethod.c,v 1.1 2007/10/25 16:55:51 garbled Exp $"); 46 47 #include <sys/types.h> 48 #include <sys/param.h> 49 #include <sys/time.h> 50 #include <sys/systm.h> 51 #include <sys/errno.h> 52 #include <sys/device.h> 53 54 #include <uvm/uvm_extern.h> 55 56 #define _POWERPC_BUS_DMA_PRIVATE 57 #include <machine/bus.h> 58 #include <machine/intr.h> 59 #include <machine/pio.h> 60 #include <dev/ofw/openfirm.h> 61 #include <dev/ofw/ofw_pci.h> 62 63 #if NISA > 0 64 #include <dev/isa/isavar.h> 65 #endif 66 67 #include <dev/pci/pcivar.h> 68 #include <dev/pci/pcireg.h> 69 #include <dev/pci/pcidevs.h> 70 71 void 72 genppc_pci_ofmethod_attach_hook(struct device *parent, struct device *self, 73 struct pcibus_attach_args *pba) 74 { 75 76 if (pba->pba_bus != 0) 77 return; 78 79 aprint_normal(": OFW method configuration space access"); 80 } 81 82 pcitag_t 83 genppc_pci_ofmethod_make_tag(void *v, int bus, int dev, int func) 84 { 85 return ((bus << OFW_PCI_PHYS_HI_BUSSHIFT) & OFW_PCI_PHYS_HI_BUSMASK) | 86 ((dev << OFW_PCI_PHYS_HI_DEVICESHIFT) & OFW_PCI_PHYS_HI_DEVICEMASK)| 87 ((func << OFW_PCI_PHYS_HI_FUNCTIONSHIFT) & 88 OFW_PCI_PHYS_HI_FUNCTIONMASK); 89 } 90 91 void 92 genppc_pci_ofmethod_decompose_tag(void *v, pcitag_t tag, int *bp, int *dp, 93 int *fp) 94 { 95 96 if (bp != NULL) 97 *bp = OFW_PCI_PHYS_HI_BUS(tag); 98 if (dp != NULL) 99 *dp = OFW_PCI_PHYS_HI_DEVICE(tag); 100 if (fp != NULL) 101 *fp = OFW_PCI_PHYS_HI_FUNCTION(tag); 102 return; 103 } 104 105 pcireg_t 106 genppc_pci_ofmethod_conf_read(void *v, pcitag_t tag, int reg) 107 { 108 pci_chipset_tag_t pc = (pci_chipset_tag_t)v; 109 pcireg_t data; 110 111 tag &= OFW_PCI_PHYS_HI_BUSMASK | OFW_PCI_PHYS_HI_DEVICEMASK | 112 OFW_PCI_PHYS_HI_FUNCTIONMASK; 113 tag |= reg & OFW_PCI_PHYS_HI_REGISTERMASK; 114 if (OF_call_method("config-l@", pc->pc_ihandle, 1, 1, tag, &data) < 0) 115 return (pcireg_t) -1; 116 /*printf("data=0x%x\n", data); */ 117 return data; 118 } 119 120 void 121 genppc_pci_ofmethod_conf_write(void *v, pcitag_t tag, int reg, pcireg_t data) 122 { 123 pci_chipset_tag_t pc = (pci_chipset_tag_t)v; 124 125 tag &= OFW_PCI_PHYS_HI_BUSMASK | OFW_PCI_PHYS_HI_DEVICEMASK | 126 OFW_PCI_PHYS_HI_FUNCTIONMASK; 127 tag |= reg & OFW_PCI_PHYS_HI_REGISTERMASK; 128 OF_call_method("config-l!", pc->pc_ihandle, 2, 0, data, tag); 129 } 130