1 /* $OpenBSD: tsp_bus_mem.c,v 1.5 2014/05/08 20:46:49 miod Exp $ */
2 /* $NetBSD: tsp_bus_mem.c,v 1.4 2000/06/26 19:46:25 thorpej Exp $ */
3
4 /*-
5 * Copyright (c) 1999 by Ross Harvey. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Ross Harvey.
18 * 4. The name of Ross Harvey may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY ROSS HARVEY ``AS IS'' AND ANY EXPRESS
22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURP0SE
24 * ARE DISCLAIMED. IN NO EVENT SHALL ROSS HARVEY BE LIABLE FOR ANY
25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 */
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/malloc.h>
38 #include <sys/syslog.h>
39 #include <sys/device.h>
40
41 #include <uvm/uvm_extern.h>
42
43 #include <machine/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
57 #define CHIP_MEM_SYS_START(v) (((struct tsp_config *)(v))->pc_iobase)
58
59 /*
60 * Tsunami core logic appears on EV6. We require at least EV56
61 * support for the assembler to emit BWX opcodes.
62 */
63 __asm(".arch ev6");
64
65 #define CHIP_EXTENT_NAME(v) ((struct tsp_config *)(v))->pc_mem_ex_name
66 #define CHIP_EXTENT_STORAGE(v) ((struct tsp_config *)(v))->pc_mem_ex_storage
67
68 #include <alpha/pci/pci_bwx_bus_mem_chipdep.c>
69
70 void
tsp_bus_mem_init2(void * v)71 tsp_bus_mem_init2(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%llx - 0x%llx\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