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      1 /* $NetBSD: mcpciavar.h,v 1.7 2023/12/04 00:32:10 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1998 by Matthew Jacob
      5  * NASA AMES Research Center.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice immediately at the beginning of the file, without modification,
     13  *    this list of conditions, and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
     24  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/extent.h>
     34 #include <sys/vmem_impl.h>
     35 
     36 #include <dev/pci/pcivar.h>
     37 
     38 #include <alpha/pci/pci_sgmap_pte64.h>
     39 
     40 #define	MCPCIA_IO_NBTS		VMEM_EST_BTCOUNT(2, 8)
     41 #define	MCPCIA_D_MEM_NBTS	VMEM_EST_BTCOUNT(1, 8)
     42 #define	MCPCIA_S_MEM_NBTS	VMEM_EST_BTCOUNT(2, 8)
     43 
     44 /*
     45  * MPCIA configuration.
     46  */
     47 struct mcpcia_config {
     48 	int				cc_gid;	/* GID of this MCbus */
     49 	int				cc_mid;	/* MCbus Module ID */
     50 	int				cc_initted;
     51 	struct alpha_bus_space		cc_iot;
     52 	struct alpha_bus_space		cc_memt;
     53 	vmem_t *			cc_io_arena;
     54 	vmem_t *			cc_d_mem_arena;
     55 	vmem_t *			cc_s_mem_arena;
     56 	struct alpha_pci_chipset	cc_pc;
     57 	struct mcpcia_softc *		cc_sc;	/* back pointer */
     58 	struct vmem			cc_io_arena_store;
     59 	struct vmem			cc_d_mem_arena_store;
     60 	struct vmem			cc_s_mem_arena_store;
     61 	struct vmem_btag		cc_io_btag_store[MCPCIA_IO_NBTS];
     62 	struct vmem_btag		cc_d_mem_btag_store[MCPCIA_D_MEM_NBTS];
     63 	struct vmem_btag		cc_s_mem_btag_store[MCPCIA_S_MEM_NBTS];
     64 	unsigned long			cc_sysbase;	/* shorthand */
     65 	struct alpha_bus_dma_tag	cc_dmat_direct;
     66 	struct alpha_bus_dma_tag	cc_dmat_pci_sgmap;
     67 	struct alpha_bus_dma_tag	cc_dmat_isa_sgmap;
     68 	struct alpha_sgmap		cc_pci_sgmap;
     69 	struct alpha_sgmap		cc_isa_sgmap;
     70 };
     71 
     72 struct mcpcia_softc {
     73 	device_t		mcpcia_dev;
     74 	struct mcpcia_config	*mcpcia_cc;	/* config info */
     75 };
     76 
     77 void	mcpcia_init(void);
     78 void	mcpcia_config_cleanup(void);
     79 
     80 void	mcpcia_pci_init(pci_chipset_tag_t, void *);
     81 void	mcpcia_dma_init(struct mcpcia_config *);
     82 
     83 void	mcpcia_bus_io_init(bus_space_tag_t, void *);
     84 void	mcpcia_bus_mem_init(bus_space_tag_t, void *);
     85 
     86 /*
     87  * IO Interrupt handler.
     88  */
     89 void 	mcpcia_iointr(void *, unsigned long);
     90 
     91 /*
     92  * There are four PCI slots per MCPCIA PCI bus here, but some are 'hidden'-
     93  * none seems to be higher than 6 though.
     94  */
     95 #define	MCPCIA_MAXDEV	6
     96 #define	MCPCIA_MAXSLOT	8
     97 
     98 /*
     99  * Interrupt Stuff for MCPCIA systems.
    100  *
    101  * EISA interrupts (at vector 0x800) have to be shared interrupts-
    102  * and that can be easily managed. All the PCI interrupts are deterministic
    103  * in that they start at vector 0x900, 0x40 per PCI slot, 0x200 per
    104  * MCPCIA, 4 MCPCIAs per GCBUS....
    105  */
    106 #define MCPCIA_EISA_KEYB_IRQ	1
    107 #define MCPCIA_EISA_MOUSE_IRQ	12
    108 #define MCPCIA_VEC_EISA		0x800
    109 #define MCPCIA_VEC_PCI		0x900
    110 
    111 /*
    112  * Special Vectors
    113  */
    114 #define	MCPCIA_I2C_CVEC		0xA90
    115 #define	MCPCIA_I2C_BVEC		0xAA0
    116