1 /* $NetBSD: pciconf_ofmethod.c,v 1.2 2008/04/28 20:23:32 martin 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Generic PowerPC functions for talking to a PCI Bridge via the RTAS or 34 * OF methods of the device. 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: pciconf_ofmethod.c,v 1.2 2008/04/28 20:23:32 martin Exp $"); 39 40 #include <sys/types.h> 41 #include <sys/param.h> 42 #include <sys/time.h> 43 #include <sys/systm.h> 44 #include <sys/errno.h> 45 #include <sys/device.h> 46 47 #include <uvm/uvm_extern.h> 48 49 #define _POWERPC_BUS_DMA_PRIVATE 50 #include <machine/bus.h> 51 #include <machine/intr.h> 52 #include <machine/pio.h> 53 #include <dev/ofw/openfirm.h> 54 #include <dev/ofw/ofw_pci.h> 55 56 #if NISA > 0 57 #include <dev/isa/isavar.h> 58 #endif 59 60 #include <dev/pci/pcivar.h> 61 #include <dev/pci/pcireg.h> 62 #include <dev/pci/pcidevs.h> 63 64 void 65 genppc_pci_ofmethod_attach_hook(struct device *parent, struct device *self, 66 struct pcibus_attach_args *pba) 67 { 68 69 if (pba->pba_bus != 0) 70 return; 71 72 aprint_normal(": OFW method configuration space access"); 73 } 74 75 pcitag_t 76 genppc_pci_ofmethod_make_tag(void *v, int bus, int dev, int func) 77 { 78 return ((bus << OFW_PCI_PHYS_HI_BUSSHIFT) & OFW_PCI_PHYS_HI_BUSMASK) | 79 ((dev << OFW_PCI_PHYS_HI_DEVICESHIFT) & OFW_PCI_PHYS_HI_DEVICEMASK)| 80 ((func << OFW_PCI_PHYS_HI_FUNCTIONSHIFT) & 81 OFW_PCI_PHYS_HI_FUNCTIONMASK); 82 } 83 84 void 85 genppc_pci_ofmethod_decompose_tag(void *v, pcitag_t tag, int *bp, int *dp, 86 int *fp) 87 { 88 89 if (bp != NULL) 90 *bp = OFW_PCI_PHYS_HI_BUS(tag); 91 if (dp != NULL) 92 *dp = OFW_PCI_PHYS_HI_DEVICE(tag); 93 if (fp != NULL) 94 *fp = OFW_PCI_PHYS_HI_FUNCTION(tag); 95 return; 96 } 97 98 pcireg_t 99 genppc_pci_ofmethod_conf_read(void *v, pcitag_t tag, int reg) 100 { 101 pci_chipset_tag_t pc = (pci_chipset_tag_t)v; 102 pcireg_t data; 103 104 tag &= OFW_PCI_PHYS_HI_BUSMASK | OFW_PCI_PHYS_HI_DEVICEMASK | 105 OFW_PCI_PHYS_HI_FUNCTIONMASK; 106 tag |= reg & OFW_PCI_PHYS_HI_REGISTERMASK; 107 if (OF_call_method("config-l@", pc->pc_ihandle, 1, 1, tag, &data) < 0) 108 return (pcireg_t) -1; 109 /*printf("data=0x%x\n", data); */ 110 return data; 111 } 112 113 void 114 genppc_pci_ofmethod_conf_write(void *v, pcitag_t tag, int reg, pcireg_t data) 115 { 116 pci_chipset_tag_t pc = (pci_chipset_tag_t)v; 117 118 tag &= OFW_PCI_PHYS_HI_BUSMASK | OFW_PCI_PHYS_HI_DEVICEMASK | 119 OFW_PCI_PHYS_HI_FUNCTIONMASK; 120 tag |= reg & OFW_PCI_PHYS_HI_REGISTERMASK; 121 OF_call_method("config-l!", pc->pc_ihandle, 2, 0, data, tag); 122 } 123