/* $NetBSD: dwlpxvar.h,v 1.12 2023/12/04 00:32:10 thorpej Exp $ */

/*
* Copyright (c) 1997 by Matthew Jacob
* NASA AMES Research Center.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice immediately at the beginning of the file, without modification,
*    this list of conditions, and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#include <sys/extent.h>
#include <sys/vmem_impl.h>

#include <dev/pci/pcivar.h>

#include <alpha/pci/pci_sgmap_pte32.h>

#define DWLPX_IO_NBTS           VMEM_EST_BTCOUNT(2, 8)
#define DWLPX_D_MEM_NBTS        VMEM_EST_BTCOUNT(1, 8)
#define DWLPX_S_MEM_NBTS        VMEM_EST_BTCOUNT(2, 8)

/*
* DWLPX configuration.
*/
struct dwlpx_config {
       int                             cc_initted;
       struct alpha_bus_space          cc_iot;
       struct alpha_bus_space          cc_memt;
       vmem_t *                        cc_io_arena;
       vmem_t *                        cc_d_mem_arena;
       vmem_t *                        cc_s_mem_arena;
       struct alpha_pci_chipset        cc_pc;
       struct dwlpx_softc *            cc_sc;  /* back pointer */
       struct vmem                     cc_io_arena_store;
       struct vmem                     cc_d_mem_arena_store;
       struct vmem                     cc_s_mem_arena_store;
       struct vmem_btag                cc_io_btag_store[DWLPX_IO_NBTS];
       struct vmem_btag                cc_d_mem_btag_store[DWLPX_D_MEM_NBTS];
       struct vmem_btag                cc_s_mem_btag_store[DWLPX_S_MEM_NBTS];
       unsigned long                   cc_sysbase;     /* shorthand */
       struct alpha_bus_dma_tag        cc_dmat_direct;
       struct alpha_bus_dma_tag        cc_dmat_sgmap;
       struct alpha_sgmap              cc_sgmap;
};

struct dwlpx_softc {
       device_t                dwlpx_dev;
       struct dwlpx_config     dwlpx_cc;       /* config info */
       uint16_t                dwlpx_dtype;    /* Node Type */
       uint8_t         dwlpx_node;     /* TurboLaser Node */
       uint8_t         dwlpx_hosenum;  /* Hose Number */
       uint8_t         dwlpx_nhpc;     /* # of hpcs */
       uint8_t         dwlpx_sgmapsz;  /* size of SGMAP */
};
#define DWLPX_NONE      0
#define DWLPX_SG32K     1
#define DWLPX_SG64K     2
#define DWLPX_SG128K    3

void    dwlpx_init(struct dwlpx_softc *);
void    dwlpx_pci_init(pci_chipset_tag_t, void *);
void    dwlpx_dma_init(struct dwlpx_config *);

void    dwlpx_bus_io_init(bus_space_tag_t, void *);
void    dwlpx_bus_mem_init(bus_space_tag_t, void *);

/*
* Each DWLPX supports up to 15 devices, 12 of which are PCI slots.
*
* Since the STD I/O modules in slots 12-14 are really a PCI-EISA
* bridge, we'll punt on those for the moment.
*/
#define DWLPX_MAXDEV    12

#define DWLPX_NIONODE   5
#define DWLPX_NHOSE     4

/*
* Default values to put into DWLPX IMASK register(s)
*/
#define DWLPX_IMASK_DFLT        \
       (1 << 24) |     /* IPL 17 for error interrupts */ \
       (1 << 17) |     /* IPL 14 for device interrupts */ \
       (1 << 16)       /* Enable Error Interrupts */