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      1 /* $NetBSD: ttwogavar.h,v 1.8 2023/12/04 00:32:10 thorpej Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      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 #include <sys/extent.h>
     33 #include <sys/vmem_impl.h>
     34 
     35 #include <dev/isa/isavar.h>
     36 #include <dev/pci/pcivar.h>
     37 #include <alpha/pci/pci_sgmap_pte64.h>
     38 
     39 #define	TTWOGA_NBTS	VMEM_EST_BTCOUNT(1, 8)
     40 
     41 /*
     42  * T2 System Address Map info.
     43  */
     44 struct ttwoga_sysmap {
     45 	bus_addr_t	tsmap_sio_base;
     46 	bus_size_t	tsmap_sio_syssize;
     47 	bus_size_t	tsmap_sio_bussize;
     48 
     49 	bus_addr_t	tsmap_smem_base;
     50 	bus_size_t	tsmap_smem_syssize;
     51 	bus_size_t	tsmap_smem_bussize;
     52 
     53 	bus_addr_t	tsmap_dmem_base;
     54 	bus_size_t	tsmap_dmem_syssize;
     55 	bus_size_t	tsmap_dmem_bussize;
     56 
     57 	bus_addr_t	tsmap_conf_base;
     58 };
     59 
     60 /*
     61  * A T2 Gate Array's configuration.
     62  *
     63  * All of the information that the T2-specific functions need to
     64  * do their dirty work (and more!).
     65  */
     66 struct ttwoga_config {
     67 	int	tc_initted;
     68 
     69 	int	tc_rev;
     70 
     71 	int	tc_hose;
     72 
     73 	bus_addr_t tc_io_bus_start, tc_d_mem_bus_start, tc_s_mem_bus_start;
     74 
     75 	const struct ttwoga_sysmap *tc_sysmap;
     76 
     77 	struct alpha_bus_space tc_iot, tc_memt;
     78 	struct alpha_pci_chipset tc_pc;
     79 
     80 	struct alpha_bus_dma_tag tc_dmat_direct;
     81 	struct alpha_bus_dma_tag tc_dmat_sgmap;
     82 
     83 	struct alpha_sgmap tc_sgmap;
     84 	int tc_use_tlb;			/* Gamma hardware bug */
     85 
     86 	struct vmem tc_io_arena_store;
     87 	struct vmem tc_d_mem_arena_store;
     88 	struct vmem tc_s_mem_arena_store;
     89 	struct vmem_btag tc_io_btag_store[TTWOGA_NBTS];
     90 	struct vmem_btag tc_d_mem_btag_store[TTWOGA_NBTS];
     91 	struct vmem_btag tc_s_mem_btag_store[TTWOGA_NBTS];
     92 
     93 	vmem_t *tc_io_arena;
     94 	vmem_t *tc_d_mem_arena;
     95 	vmem_t *tc_s_mem_arena;
     96 
     97 	struct alpha_shared_intr *tc_intrtab;
     98 
     99 	void	(*tc_enable_intr)(struct ttwoga_config *, int, int);
    100 	void	(*tc_setlevel)(struct ttwoga_config *, int, int);
    101 	void	(*tc_eoi)(struct ttwoga_config *, int);
    102 };
    103 
    104 extern cpuid_t ttwoga_conf_cpu;
    105 
    106 struct ttwoga_config *ttwoga_init(int);
    107 void	ttwoga_pci_init(pci_chipset_tag_t, void *);
    108 void	ttwoga_dma_init(struct ttwoga_config *);
    109 
    110 void	ttwoga_bus_io_init(bus_space_tag_t, void *);
    111 void	ttwoga_bus_mem_init(bus_space_tag_t, void *);
    112