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u3.c revision 1.8.16.1
      1  1.8.16.1  pgoyette /* $NetBSD: u3.c,v 1.8.16.1 2018/04/16 01:59:55 pgoyette Exp $ */
      2       1.2   garbled 
      3       1.1   sanjayl /*
      4       1.1   sanjayl  * Copyright 2006 Kyma Systems LLC.
      5       1.1   sanjayl  * All rights reserved.
      6       1.1   sanjayl  *
      7       1.1   sanjayl  * Written by Sanjay Lal <sanjayl (at) kymasys.com>
      8       1.1   sanjayl  *
      9       1.1   sanjayl  * Redistribution and use in source and binary forms, with or without
     10       1.1   sanjayl  * modification, are permitted provided that the following conditions
     11       1.1   sanjayl  * are met:
     12       1.1   sanjayl  * 1. Redistributions of source code must retain the above copyright
     13       1.1   sanjayl  *    notice, this list of conditions and the following disclaimer.
     14       1.1   sanjayl  * 2. Redistributions in binary form must reproduce the above copyright
     15       1.1   sanjayl  *    notice, this list of conditions and the following disclaimer in the
     16       1.1   sanjayl  *    documentation and/or other materials provided with the distribution.
     17       1.1   sanjayl  * 3. All advertising materials mentioning features or use of this software
     18       1.1   sanjayl  *    must display the following acknowledgement:
     19       1.1   sanjayl  *      This product includes software developed for the NetBSD Project by
     20       1.1   sanjayl  *      Kyma Systems LLC.
     21       1.1   sanjayl  * 4. The name of Kyma Systems LLC may not be used to endorse
     22       1.1   sanjayl  *    or promote products derived from this software without specific prior
     23       1.1   sanjayl  *    written permission.
     24       1.1   sanjayl  *
     25       1.1   sanjayl  * THIS SOFTWARE IS PROVIDED BY KYMA SYSTEMS LLC ``AS IS'' AND
     26       1.1   sanjayl  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27       1.1   sanjayl  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28       1.1   sanjayl  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL KYMA SYSTEMS LLC
     29       1.1   sanjayl  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30       1.1   sanjayl  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31       1.1   sanjayl  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32       1.1   sanjayl  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33       1.1   sanjayl  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34       1.1   sanjayl  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35       1.1   sanjayl  * POSSIBILITY OF SUCH DAMAGE.
     36       1.1   sanjayl  */
     37       1.1   sanjayl 
     38       1.1   sanjayl #include <sys/cdefs.h>
     39       1.1   sanjayl 
     40       1.1   sanjayl #include <sys/param.h>
     41       1.1   sanjayl #include <sys/device.h>
     42       1.1   sanjayl #include <sys/systm.h>
     43       1.1   sanjayl 
     44       1.1   sanjayl #include <dev/pci/pcivar.h>
     45       1.1   sanjayl #include <dev/ofw/openfirm.h>
     46       1.1   sanjayl #include <dev/ofw/ofw_pci.h>
     47       1.1   sanjayl 
     48       1.1   sanjayl #include <machine/autoconf.h>
     49       1.6       chs #include <machine/pio.h>
     50       1.1   sanjayl 
     51       1.1   sanjayl struct ibmcpc_softc
     52       1.1   sanjayl {
     53       1.7  macallan 	device_t sc_dev;
     54       1.2   garbled 	struct genppc_pci_chipset sc_pc[8];
     55       1.2   garbled 	struct powerpc_bus_space sc_iot;
     56       1.2   garbled 	struct powerpc_bus_space sc_memt;
     57  1.8.16.1  pgoyette 	int sc_ranges[8];
     58       1.1   sanjayl };
     59       1.1   sanjayl 
     60  1.8.16.1  pgoyette /* kinda ugly but there can be only one */
     61  1.8.16.1  pgoyette static struct ibmcpc_softc *cpc0 = NULL;
     62  1.8.16.1  pgoyette 
     63       1.4      matt static void ibmcpc_attach(device_t, device_t, void *);
     64       1.4      matt static int ibmcpc_match(device_t, cfdata_t, void *);
     65       1.1   sanjayl 
     66       1.2   garbled static pcireg_t ibmcpc_conf_read(void *, pcitag_t, int);
     67       1.2   garbled static void ibmcpc_conf_write(void *, pcitag_t, int, pcireg_t);
     68       1.1   sanjayl 
     69       1.6       chs CFATTACH_DECL_NEW(ibmcpc, sizeof(struct ibmcpc_softc),
     70       1.1   sanjayl               ibmcpc_match, ibmcpc_attach, NULL, NULL);
     71       1.1   sanjayl 
     72       1.1   sanjayl #define PCI_DEVFN(slot,func)    ((((slot) & 0x1f) << 3) | ((func) & 0x07))
     73       1.1   sanjayl 
     74       1.2   garbled static int
     75       1.4      matt ibmcpc_match(device_t parent, cfdata_t cf, void *aux)
     76       1.1   sanjayl {
     77       1.2   garbled 	struct confargs *ca = aux;
     78       1.2   garbled 	char compat[32];
     79       1.1   sanjayl 
     80       1.2   garbled 	if (strcmp(ca->ca_name, "ht") != 0)
     81       1.2   garbled 		return 0;
     82       1.1   sanjayl 
     83       1.2   garbled 	memset(compat, 0, sizeof(compat));
     84       1.2   garbled 	OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat));
     85       1.1   sanjayl 
     86       1.2   garbled 	if (strcmp(compat, "u3-ht") != 0)
     87       1.2   garbled 		return 0;
     88       1.1   sanjayl 
     89       1.2   garbled 	return 1;
     90       1.1   sanjayl }
     91       1.1   sanjayl 
     92       1.2   garbled static void
     93       1.4      matt ibmcpc_attach(device_t parent, device_t self, void *aux)
     94       1.1   sanjayl {
     95       1.6       chs 	struct ibmcpc_softc *sc = device_private(self);
     96       1.2   garbled 	pci_chipset_tag_t pc = sc->sc_pc;
     97       1.2   garbled 	struct confargs *ca = aux;
     98       1.2   garbled 	struct pcibus_attach_args pba;
     99       1.2   garbled 	int node = ca->ca_node, child;
    100       1.2   garbled 	uint32_t reg[6], busrange[2], i;
    101       1.2   garbled 	void *pc_data;
    102       1.2   garbled 	char name[32];
    103       1.2   garbled 
    104       1.2   garbled 	aprint_normal("\n");
    105       1.7  macallan 	sc->sc_dev = self;
    106       1.2   garbled 
    107       1.2   garbled 	/* u3 address */
    108       1.2   garbled 	if (OF_getprop(node, "reg", reg, sizeof(reg)) < 24) {
    109       1.2   garbled 		return;
    110       1.2   garbled 	}
    111       1.2   garbled 	aprint_normal("Mapping in config space @ pa 0x%08x, size: 0x%08x\n",
    112       1.2   garbled 	    reg[1], reg[2]);
    113       1.5      matt 	pc_data = mapiodev(reg[1], reg[2], false);
    114       1.2   garbled 
    115  1.8.16.1  pgoyette 	cpc0 = sc;
    116  1.8.16.1  pgoyette 
    117       1.2   garbled 	for (child = OF_child(OF_finddevice("/ht")), i = 1; child;
    118       1.2   garbled 	    child = OF_peer(child), i++) {
    119       1.2   garbled 
    120       1.2   garbled 		memset(name, 0, sizeof(name));
    121       1.2   garbled 
    122       1.2   garbled 		if (OF_getprop(child, "name", name, sizeof(name)) == -1)
    123       1.2   garbled 			continue;
    124       1.2   garbled 
    125       1.2   garbled 		if (strcmp(name, "pci") != 0)
    126       1.2   garbled 			continue;
    127       1.2   garbled 
    128       1.2   garbled 		if (OF_getprop(child, "bus-range", busrange, 8) < 8)
    129       1.2   garbled 			continue;
    130       1.2   garbled 
    131       1.7  macallan 		memset(&sc->sc_iot, 0, sizeof(sc->sc_iot));
    132       1.2   garbled 		sc->sc_iot.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN |
    133       1.2   garbled 		    _BUS_SPACE_IO_TYPE;
    134       1.2   garbled 		sc->sc_iot.pbs_base = 0x00000000;
    135       1.2   garbled 		if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_IO, child,
    136       1.2   garbled 		    &sc->sc_iot, "ibmcpc io") != 0)
    137       1.2   garbled 			panic("Can't init ibmcpc io tag");
    138       1.2   garbled 
    139       1.7  macallan 		memset(&sc->sc_memt, 0, sizeof(sc->sc_memt));
    140       1.2   garbled 		sc->sc_memt.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN |
    141       1.2   garbled 		    _BUS_SPACE_MEM_TYPE;
    142       1.2   garbled 		sc->sc_memt.pbs_base = 0x00000000;
    143       1.2   garbled 		if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_MEM, child,
    144       1.2   garbled 		    &sc->sc_memt, "ibmcpc mem") != 0)
    145       1.2   garbled 			panic("Can't init ibmcpc mem tag");
    146       1.2   garbled 
    147       1.2   garbled 		macppc_pci_get_chipset_tag(pc);
    148       1.2   garbled 		pc->pc_node = child;
    149       1.2   garbled 		pc->pc_bus = busrange[0];
    150  1.8.16.1  pgoyette 		sc->sc_ranges[pc->pc_bus] = busrange[1];
    151       1.2   garbled 		pc->pc_addr = 0x0;
    152       1.2   garbled 		pc->pc_data = pc_data;
    153       1.2   garbled 		pc->pc_conf_read = ibmcpc_conf_read;
    154       1.2   garbled 		pc->pc_conf_write = ibmcpc_conf_write;
    155       1.2   garbled 		pc->pc_memt = &sc->sc_memt;
    156       1.2   garbled 		pc->pc_iot = &sc->sc_iot;
    157       1.2   garbled 
    158       1.2   garbled 		memset(&pba, 0, sizeof(pba));
    159       1.2   garbled 		pba.pba_memt = pc->pc_memt;
    160       1.2   garbled 		pba.pba_iot = pc->pc_iot;
    161       1.2   garbled 		pba.pba_dmat = &pci_bus_dma_tag;
    162       1.2   garbled 		pba.pba_dmat64 = NULL;
    163       1.2   garbled 		pba.pba_bridgetag = NULL;
    164       1.2   garbled 		pba.pba_pc = pc;
    165       1.2   garbled 		pba.pba_bus = pc->pc_bus;
    166       1.3    dyoung 		pba.pba_flags = PCI_FLAGS_MEM_OKAY | PCI_FLAGS_IO_OKAY;
    167       1.2   garbled 		config_found_ia(self, "pcibus", &pba, pcibusprint);
    168       1.1   sanjayl 
    169       1.2   garbled 		pc++;
    170       1.2   garbled 	}
    171       1.1   sanjayl }
    172       1.1   sanjayl 
    173       1.2   garbled static pcireg_t
    174       1.2   garbled ibmcpc_conf_read(void *cookie, pcitag_t tag, int reg)
    175       1.1   sanjayl {
    176       1.2   garbled 	pci_chipset_tag_t pc = cookie;
    177  1.8.16.1  pgoyette 	struct ibmcpc_softc *sc = cpc0;
    178       1.2   garbled 	u_int32_t daddr = (u_int32_t) pc->pc_data;
    179       1.2   garbled 	pcireg_t data;
    180       1.2   garbled 	u_int32_t bus, dev, func, x, devfn;
    181       1.2   garbled 
    182       1.8   msaitoh 	if ((unsigned int)reg >= PCI_CONF_SIZE)
    183       1.8   msaitoh 		return (pcireg_t) -1;
    184       1.8   msaitoh 
    185       1.2   garbled 	pci_decompose_tag(pc, tag, &bus, &dev, &func);
    186       1.1   sanjayl 
    187  1.8.16.1  pgoyette 	if ((bus < pc->pc_bus) || (bus > sc->sc_ranges[pc->pc_bus])) {
    188  1.8.16.1  pgoyette 		data = 0xffffffff;
    189  1.8.16.1  pgoyette 		goto done;
    190  1.8.16.1  pgoyette 	}
    191  1.8.16.1  pgoyette 
    192       1.2   garbled 	devfn = PCI_DEVFN(dev, func);
    193       1.1   sanjayl 
    194       1.2   garbled 	if (bus == 0) {
    195       1.1   sanjayl 
    196       1.2   garbled 		if (devfn == 0x0) {
    197       1.1   sanjayl 
    198       1.2   garbled 			data = 0xffffffff;
    199       1.2   garbled 			goto done;
    200       1.2   garbled 		}
    201       1.1   sanjayl 
    202       1.2   garbled 		x = daddr + ((devfn << 8) | reg);
    203       1.2   garbled 	} else
    204       1.2   garbled 		x = daddr + ((devfn << 8) | reg) + (bus << 16) + 0x01000000UL;
    205       1.1   sanjayl 
    206       1.2   garbled 	data = in32rb(x);
    207       1.1   sanjayl 
    208       1.2   garbled done:
    209       1.2   garbled 	return data;
    210       1.1   sanjayl }
    211       1.1   sanjayl 
    212       1.2   garbled static void
    213       1.2   garbled ibmcpc_conf_write(void *cookie, pcitag_t tag, int reg, pcireg_t data)
    214       1.1   sanjayl {
    215       1.2   garbled 	pci_chipset_tag_t pc = cookie;
    216  1.8.16.1  pgoyette 	struct ibmcpc_softc *sc = cpc0;
    217       1.2   garbled 	int32_t *daddr = pc->pc_data;
    218       1.2   garbled 	u_int32_t bus, dev, func;
    219       1.2   garbled 	u_int32_t x, devfn;
    220       1.2   garbled 
    221       1.8   msaitoh 	if ((unsigned int)reg >= PCI_CONF_SIZE)
    222       1.8   msaitoh 		return;
    223       1.8   msaitoh 
    224       1.2   garbled 	pci_decompose_tag(pc, tag, &bus, &dev, &func);
    225       1.2   garbled 
    226  1.8.16.1  pgoyette 	if ((bus < pc->pc_bus) || (bus > sc->sc_ranges[pc->pc_bus]))
    227  1.8.16.1  pgoyette 		return;
    228  1.8.16.1  pgoyette 
    229       1.2   garbled 	devfn = PCI_DEVFN(dev, func);
    230       1.2   garbled 
    231       1.2   garbled 	if (bus == 0) {
    232       1.2   garbled 
    233       1.2   garbled 		if (devfn == 0x0) {
    234       1.2   garbled 			goto done;
    235       1.2   garbled 		}
    236       1.2   garbled 		x = (u_int32_t) daddr + ((devfn << 8) | reg);
    237       1.2   garbled 	} else
    238       1.2   garbled 		x = (u_int32_t) daddr + ((devfn << 8) | reg) + (bus << 16) +
    239       1.2   garbled 		    0x01000000UL;
    240       1.1   sanjayl 
    241       1.2   garbled 	out32rb(x, data);
    242       1.1   sanjayl 
    243       1.2   garbled done:
    244       1.2   garbled 	return;
    245       1.1   sanjayl }
    246