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pciconf_ofmethod.c revision 1.6.2.1
      1  1.6.2.1  thorpej /* $NetBSD: pciconf_ofmethod.c,v 1.6.2.1 2021/04/03 22:28:35 thorpej Exp $ */
      2      1.1  garbled 
      3      1.1  garbled /*-
      4      1.1  garbled  * Copyright (c) 2007 The NetBSD Foundation, Inc.
      5      1.1  garbled  * All rights reserved.
      6      1.1  garbled  *
      7      1.1  garbled  * This code is derived from software contributed to The NetBSD Foundation
      8      1.1  garbled  * by Jochen Kunz and Tim Rightnour
      9      1.1  garbled  *
     10      1.1  garbled  * Redistribution and use in source and binary forms, with or without
     11      1.1  garbled  * modification, are permitted provided that the following conditions
     12      1.1  garbled  * are met:
     13      1.1  garbled  * 1. Redistributions of source code must retain the above copyright
     14      1.1  garbled  *    notice, this list of conditions and the following disclaimer.
     15      1.1  garbled  * 2. Redistributions in binary form must reproduce the above copyright
     16      1.1  garbled  *    notice, this list of conditions and the following disclaimer in the
     17      1.1  garbled  *    documentation and/or other materials provided with the distribution.
     18      1.1  garbled  *
     19      1.1  garbled  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20      1.1  garbled  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21      1.1  garbled  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22      1.1  garbled  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23      1.1  garbled  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24      1.1  garbled  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25      1.1  garbled  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26      1.1  garbled  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27      1.1  garbled  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28      1.1  garbled  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29      1.1  garbled  * POSSIBILITY OF SUCH DAMAGE.
     30      1.1  garbled  */
     31      1.1  garbled 
     32      1.1  garbled /*
     33      1.1  garbled  * Generic PowerPC functions for talking to a PCI Bridge via the RTAS or
     34      1.1  garbled  * OF methods of the device.
     35      1.1  garbled  */
     36      1.1  garbled 
     37      1.6      rin #define _POWERPC_BUS_DMA_PRIVATE
     38      1.6      rin 
     39      1.1  garbled #include <sys/cdefs.h>
     40  1.6.2.1  thorpej __KERNEL_RCSID(0, "$NetBSD: pciconf_ofmethod.c,v 1.6.2.1 2021/04/03 22:28:35 thorpej Exp $");
     41      1.1  garbled 
     42      1.1  garbled #include <sys/types.h>
     43      1.1  garbled #include <sys/param.h>
     44      1.1  garbled #include <sys/time.h>
     45      1.1  garbled #include <sys/systm.h>
     46      1.1  garbled #include <sys/errno.h>
     47      1.1  garbled #include <sys/device.h>
     48      1.4     matt #include <sys/bus.h>
     49      1.4     matt #include <sys/intr.h>
     50      1.1  garbled 
     51      1.1  garbled #include <uvm/uvm_extern.h>
     52      1.1  garbled 
     53      1.1  garbled #include <machine/pio.h>
     54      1.4     matt 
     55      1.1  garbled #include <dev/ofw/openfirm.h>
     56      1.1  garbled #include <dev/ofw/ofw_pci.h>
     57      1.1  garbled 
     58      1.1  garbled #include <dev/pci/pcivar.h>
     59      1.1  garbled #include <dev/pci/pcireg.h>
     60      1.1  garbled #include <dev/pci/pcidevs.h>
     61      1.1  garbled 
     62      1.1  garbled void
     63      1.3     matt genppc_pci_ofmethod_attach_hook(device_t parent, device_t self,
     64      1.1  garbled     struct pcibus_attach_args *pba)
     65      1.1  garbled {
     66      1.1  garbled 
     67      1.1  garbled 	if (pba->pba_bus != 0)
     68      1.1  garbled 		return;
     69      1.1  garbled 
     70      1.1  garbled 	aprint_normal(": OFW method configuration space access");
     71      1.1  garbled }
     72      1.1  garbled 
     73      1.1  garbled pcitag_t
     74      1.1  garbled genppc_pci_ofmethod_make_tag(void *v, int bus, int dev, int func)
     75      1.1  garbled {
     76      1.1  garbled 	return ((bus << OFW_PCI_PHYS_HI_BUSSHIFT) & OFW_PCI_PHYS_HI_BUSMASK) |
     77      1.1  garbled 	    ((dev << OFW_PCI_PHYS_HI_DEVICESHIFT) & OFW_PCI_PHYS_HI_DEVICEMASK)|
     78      1.1  garbled 	    ((func << OFW_PCI_PHYS_HI_FUNCTIONSHIFT) &
     79      1.1  garbled 	    OFW_PCI_PHYS_HI_FUNCTIONMASK);
     80      1.1  garbled }
     81      1.1  garbled 
     82      1.1  garbled void
     83      1.1  garbled genppc_pci_ofmethod_decompose_tag(void *v, pcitag_t tag, int *bp, int *dp,
     84      1.1  garbled     int *fp)
     85      1.1  garbled {
     86      1.1  garbled 
     87      1.1  garbled 	if (bp != NULL)
     88      1.1  garbled 		*bp = OFW_PCI_PHYS_HI_BUS(tag);
     89      1.1  garbled 	if (dp != NULL)
     90      1.1  garbled 		*dp = OFW_PCI_PHYS_HI_DEVICE(tag);
     91      1.1  garbled 	if (fp != NULL)
     92      1.1  garbled 		*fp = OFW_PCI_PHYS_HI_FUNCTION(tag);
     93      1.1  garbled 	return;
     94      1.1  garbled }
     95      1.1  garbled 
     96      1.1  garbled pcireg_t
     97      1.1  garbled genppc_pci_ofmethod_conf_read(void *v, pcitag_t tag, int reg)
     98      1.1  garbled {
     99      1.1  garbled 	pci_chipset_tag_t pc = (pci_chipset_tag_t)v;
    100      1.1  garbled 	pcireg_t data;
    101      1.1  garbled 
    102      1.5  msaitoh 	if ((unsigned int)reg >= PCI_CONF_SIZE)
    103      1.5  msaitoh 		return (pcireg_t) -1;
    104      1.5  msaitoh 
    105      1.1  garbled 	tag &= OFW_PCI_PHYS_HI_BUSMASK | OFW_PCI_PHYS_HI_DEVICEMASK |
    106      1.1  garbled 	    OFW_PCI_PHYS_HI_FUNCTIONMASK;
    107      1.1  garbled 	tag |= reg & OFW_PCI_PHYS_HI_REGISTERMASK;
    108      1.1  garbled 	if (OF_call_method("config-l@", pc->pc_ihandle, 1, 1, tag, &data) < 0)
    109      1.1  garbled 		return (pcireg_t) -1;
    110      1.1  garbled 	/*printf("data=0x%x\n", data); */
    111      1.1  garbled 	return data;
    112      1.1  garbled }
    113      1.1  garbled 
    114      1.1  garbled void
    115      1.1  garbled genppc_pci_ofmethod_conf_write(void *v, pcitag_t tag, int reg, pcireg_t data)
    116      1.1  garbled {
    117      1.1  garbled 	pci_chipset_tag_t pc = (pci_chipset_tag_t)v;
    118      1.1  garbled 
    119      1.5  msaitoh 	if ((unsigned int)reg >= PCI_CONF_SIZE)
    120      1.5  msaitoh 		return;
    121      1.5  msaitoh 
    122      1.1  garbled 	tag &= OFW_PCI_PHYS_HI_BUSMASK | OFW_PCI_PHYS_HI_DEVICEMASK |
    123      1.1  garbled 	    OFW_PCI_PHYS_HI_FUNCTIONMASK;
    124      1.1  garbled 	tag |= reg & OFW_PCI_PHYS_HI_REGISTERMASK;
    125      1.1  garbled 	OF_call_method("config-l!", pc->pc_ihandle, 2, 0, data, tag);
    126      1.1  garbled }
    127