1205147Sedwin/* $NetBSD: tsp_bus_mem.c,v 1.11 2011/07/01 19:19:50 dyoung Exp $ */
2205147Sedwin
3205147Sedwin/*-
4205147Sedwin * Copyright (c) 1999 by Ross Harvey.  All rights reserved.
5205147Sedwin *
6205147Sedwin * Redistribution and use in source and binary forms, with or without
7205147Sedwin * modification, are permitted provided that the following conditions
8205147Sedwin * are met:
9205147Sedwin * 1. Redistributions of source code must retain the above copyright
10205147Sedwin *    notice, this list of conditions and the following disclaimer.
11205147Sedwin * 2. Redistributions in binary form must reproduce the above copyright
12205147Sedwin *    notice, this list of conditions and the following disclaimer in the
13205147Sedwin *    documentation and/or other materials provided with the distribution.
14205147Sedwin * 3. All advertising materials mentioning features or use of this software
15205147Sedwin *    must display the following acknowledgement:
16205147Sedwin *	This product includes software developed by Ross Harvey.
17205147Sedwin * 4. The name of Ross Harvey 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 ROSS HARVEY ``AS IS'' AND ANY EXPRESS
21 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURP0SE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL ROSS HARVEY BE LIABLE FOR ANY
24 * 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
34#include <sys/cdefs.h>
35__KERNEL_RCSID(0, "$NetBSD: tsp_bus_mem.c,v 1.11 2011/07/01 19:19:50 dyoung Exp $");
36
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/malloc.h>
40#include <sys/syslog.h>
41#include <sys/device.h>
42
43#include <sys/bus.h>
44#include <machine/autoconf.h>
45#include <machine/rpb.h>
46
47#include <alpha/pci/tsreg.h>
48#include <alpha/pci/tsvar.h>
49
50#define tsp_bus_mem() { Generate ctags(1) key. }
51
52#define	CHIP	tsp
53
54#define	CHIP_EX_MALLOC_SAFE(v)  (((struct tsp_config *)(v))->pc_mallocsafe)
55#define CHIP_MEM_EXTENT(v)       (((struct tsp_config *)(v))->pc_mem_ex)
56#define	CHIP_MEM_EX_STORE(v)	(((struct tsp_config *)(v))->pc_mem_exstorage)
57#define	CHIP_MEM_EX_STORE_SIZE(v)					\
58	(sizeof (((struct tsp_config *)(v))->pc_mem_exstorage))
59
60#define CHIP_MEM_SYS_START(v)    (((struct tsp_config *)(v))->pc_iobase)
61
62/*
63 * Tsunami core logic appears on EV6.  We require at least EV56
64 * support for the assembler to emit BWX opcodes.
65 */
66__asm(".arch ev6");
67
68#include <alpha/pci/pci_bwx_bus_mem_chipdep.c>
69
70void
71tsp_bus_mem_init2(bus_space_tag_t t, void *v)
72{
73	struct tsp_config *pcp = v;
74	struct ts_pchip *pccsr = pcp->pc_csr;
75	int i, error;
76
77	/*
78	 * Allocate the DMA windows out of the extent map.
79	 */
80	for (i = 0; i < 4; i++) {
81		alpha_mb();
82		if ((pccsr->tsp_wsba[i].tsg_r & WSBA_ENA) == 0) {
83			/* Window not in use. */
84			continue;
85		}
86
87		error = extent_alloc_region(CHIP_MEM_EXTENT(v),
88		    WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r),
89		    WSM_LEN(pccsr->tsp_wsm[i].tsg_r),
90		    EX_NOWAIT | (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0));
91		if (error) {
92			printf("WARNING: unable to reserve DMA window "
93			    "0x%lx - 0x%lx\n",
94			    WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r),
95			    WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r) +
96			    (WSM_LEN(pccsr->tsp_wsm[i].tsg_r) - 1));
97		}
98	}
99}
100