1 /* $NetBSD: pciconf_ofmethod.c,v 1.4 2011/06/18 06:41:43 matt 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 1.4 2011/06/18 06:41:43 matt Exp $"); 39 40 #define _POWERPC_BUS_DMA_PRIVATE 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/time.h> 45 #include <sys/systm.h> 46 #include <sys/errno.h> 47 #include <sys/device.h> 48 #include <sys/bus.h> 49 #include <sys/intr.h> 50 51 #include <uvm/uvm_extern.h> 52 53 #include <machine/pio.h> 54 55 #include <dev/ofw/openfirm.h> 56 #include <dev/ofw/ofw_pci.h> 57 58 #if NISA > 0 59 #include <dev/isa/isavar.h> 60 #endif 61 62 #include <dev/pci/pcivar.h> 63 #include <dev/pci/pcireg.h> 64 #include <dev/pci/pcidevs.h> 65 66 void 67 genppc_pci_ofmethod_attach_hook(device_t parent, device_t self, 68 struct pcibus_attach_args *pba) 69 { 70 71 if (pba->pba_bus != 0) 72 return; 73 74 aprint_normal(": OFW method configuration space access"); 75 } 76 77 pcitag_t 78 genppc_pci_ofmethod_make_tag(void *v, int bus, int dev, int func) 79 { 80 return ((bus << OFW_PCI_PHYS_HI_BUSSHIFT) & OFW_PCI_PHYS_HI_BUSMASK) | 81 ((dev << OFW_PCI_PHYS_HI_DEVICESHIFT) & OFW_PCI_PHYS_HI_DEVICEMASK)| 82 ((func << OFW_PCI_PHYS_HI_FUNCTIONSHIFT) & 83 OFW_PCI_PHYS_HI_FUNCTIONMASK); 84 } 85 86 void 87 genppc_pci_ofmethod_decompose_tag(void *v, pcitag_t tag, int *bp, int *dp, 88 int *fp) 89 { 90 91 if (bp != NULL) 92 *bp = OFW_PCI_PHYS_HI_BUS(tag); 93 if (dp != NULL) 94 *dp = OFW_PCI_PHYS_HI_DEVICE(tag); 95 if (fp != NULL) 96 *fp = OFW_PCI_PHYS_HI_FUNCTION(tag); 97 return; 98 } 99 100 pcireg_t 101 genppc_pci_ofmethod_conf_read(void *v, pcitag_t tag, int reg) 102 { 103 pci_chipset_tag_t pc = (pci_chipset_tag_t)v; 104 pcireg_t data; 105 106 tag &= OFW_PCI_PHYS_HI_BUSMASK | OFW_PCI_PHYS_HI_DEVICEMASK | 107 OFW_PCI_PHYS_HI_FUNCTIONMASK; 108 tag |= reg & OFW_PCI_PHYS_HI_REGISTERMASK; 109 if (OF_call_method("config-l@", pc->pc_ihandle, 1, 1, tag, &data) < 0) 110 return (pcireg_t) -1; 111 /*printf("data=0x%x\n", data); */ 112 return data; 113 } 114 115 void 116 genppc_pci_ofmethod_conf_write(void *v, pcitag_t tag, int reg, pcireg_t data) 117 { 118 pci_chipset_tag_t pc = (pci_chipset_tag_t)v; 119 120 tag &= OFW_PCI_PHYS_HI_BUSMASK | OFW_PCI_PHYS_HI_DEVICEMASK | 121 OFW_PCI_PHYS_HI_FUNCTIONMASK; 122 tag |= reg & OFW_PCI_PHYS_HI_REGISTERMASK; 123 OF_call_method("config-l!", pc->pc_ihandle, 2, 0, data, tag); 124 } 125