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      1 /* $NetBSD: gcscpcib_pci.c,v 1.3 2024/02/02 22:14:04 andvar Exp $ */
      2 /* $OpenBSD: gcscpcib.c,v 1.6 2007/11/17 17:02:47 mbalmer Exp $	*/
      3 
      4 /*
      5  * Copyright (c) 2008 Yojiro UO <yuo (at) nui.org>
      6  * Copyright (c) 2007 Marc Balmer <mbalmer (at) openbsd.org>
      7  * Copyright (c) 2007 Michael Shalayeff
      8  * All rights reserved.
      9  *
     10  * Permission to use, copy, modify, and distribute this software for any
     11  * purpose with or without fee is hereby granted, provided that the above
     12  * copyright notice and this permission notice appear in all copies.
     13  *
     14  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     15  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     16  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     17  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     18  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
     19  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
     20  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     21  */
     22 
     23 /*
     24  * AMD CS5535/CS5536 series LPC bridge also containing timer, watchdog and GPIO.
     25  * machine-dependent attachment.
     26  */
     27 #include <sys/cdefs.h>
     28 __KERNEL_RCSID(0, "$NetBSD: gcscpcib_pci.c,v 1.3 2024/02/02 22:14:04 andvar Exp $");
     29 
     30 
     31 #include <sys/param.h>
     32 #include <sys/systm.h>
     33 #include <sys/device.h>
     34 #include <sys/gpio.h>
     35 #include <sys/timetc.h>
     36 #include <sys/wdog.h>
     37 
     38 #include <sys/bus.h>
     39 
     40 #include <dev/pci/pcireg.h>
     41 #include <dev/pci/pcivar.h>
     42 #include <dev/pci/pcidevs.h>
     43 
     44 #include <dev/gpio/gpiovar.h>
     45 #include <dev/sysmon/sysmonvar.h>
     46 #include <dev/ic/gcscpcibreg.h>
     47 #include <dev/ic/gcscpcibvar.h>
     48 
     49 #include <evbmips/loongson/dev/glxvar.h>
     50 #include <evbmips/loongson/dev/pcibvar.h>
     51 
     52 struct gcscpcib_pci_softc {
     53         /* we call pcibattach() which assumes softc starts like this: */
     54 	struct pcib_softc       sc_pcib;
     55 	/* MI gcscpcib datas */
     56 	struct gcscpcib_softc	sc_gcscpcib;
     57 };
     58 
     59 static int      gcscpcib_pci_match(device_t, cfdata_t, void *);
     60 static void     gcscpcib_pci_attach(device_t, device_t, void *);
     61 
     62 CFATTACH_DECL_NEW(gcscpcib_pci, sizeof(struct gcscpcib_pci_softc),
     63         gcscpcib_pci_match, gcscpcib_pci_attach, NULL, NULL);
     64 
     65 
     66 static int
     67 gcscpcib_pci_match(device_t parent, cfdata_t match, void *aux)
     68 {
     69 	struct pci_attach_args *pa = aux;
     70 
     71 	if (PCI_CLASS(pa->pa_class) != PCI_CLASS_BRIDGE ||
     72 	    PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_BRIDGE_ISA)
     73 		return 0;
     74 
     75 	switch (PCI_PRODUCT(pa->pa_id)) {
     76 	case PCI_PRODUCT_NS_CS5535_ISA:
     77 	case PCI_PRODUCT_AMD_CS5536_PCIB:
     78 		return 2;	/* supersede pcib(4) */
     79 	}
     80 
     81 	return 0;
     82 }
     83 
     84 static void
     85 gcscpcib_pci_attach(device_t parent, device_t self, void *aux)
     86 {
     87 	struct gcscpcib_pci_softc *sc = device_private(self);
     88 	struct pci_attach_args *pa = (struct pci_attach_args *)aux;
     89 
     90 	sc->sc_pcib.sc_pc = pa->pa_pc;
     91 	sc->sc_pcib.sc_tag = pa->pa_tag;
     92 	/* Attach the PCI-ISA bridge at first */
     93 	pcibattach(parent, self, aux);
     94 	/* then attach gcscpcib itself */
     95 	gcscpcib_attach(self, &sc->sc_gcscpcib, pa->pa_iot, GCSCATTACH_NO_WDT);
     96 }
     97 
     98 uint64_t
     99 gcsc_rdmsr(uint msr)
    100 {
    101 	return rdmsr(msr);
    102 }
    103 
    104 void
    105 gcsc_wrmsr(uint msr, uint64_t v)
    106 {
    107 	wrmsr(msr, v);
    108 }
    109