1 /* $NetBSD: tsp_bus_mem.c,v 1.15 2023/12/04 00:32:10 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1999 by Ross Harvey. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Ross Harvey.
17 * 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 1.15 2023/12/04 00:32:10 thorpej Exp $");
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/syslog.h>
40 #include <sys/device.h>
41
42 #include <sys/bus.h>
43 #include <machine/autoconf.h>
44 #include <machine/rpb.h>
45
46 #include <alpha/pci/tsreg.h>
47 #include <alpha/pci/tsvar.h>
48
49 #define tsp_bus_mem() { Generate ctags(1) key. }
50
51 #define CHIP tsp
52
53 #define CHIP_MEM_ARENA(v) \
54 (((struct tsp_config *)(v))->pc_mem_arena)
55 #define CHIP_MEM_ARENA_STORE(v) \
56 (&(((struct tsp_config *)(v))->pc_mem_arena_store))
57 #define CHIP_MEM_BTAG_STORE(v) \
58 (((struct tsp_config *)(v))->pc_mem_btag_store)
59 #define CHIP_MEM_BTAG_COUNT(v) TSP_NBTS
60
61 #define CHIP_MEM_SYS_START(v) \
62 (((struct tsp_config *)(v))->pc_iobase | P_PCI_MEM)
63
64 /*
65 * Tsunami core logic appears on EV6. We require at least EV56
66 * support for the assembler to emit BWX opcodes.
67 */
68 __asm(".arch ev6");
69
70 #include <alpha/pci/pci_bwx_bus_mem_chipdep.c>
71
72 void
tsp_bus_mem_init2(bus_space_tag_t t,void * v)73 tsp_bus_mem_init2(bus_space_tag_t t, void *v)
74 {
75 struct tsp_config *pcp = v;
76 struct ts_pchip *pccsr = pcp->pc_csr;
77 int i, error;
78
79 /*
80 * Allocate the DMA windows out of the extent map.
81 */
82 for (i = 0; i < 4; i++) {
83 alpha_mb();
84 if ((pccsr->tsp_wsba[i].tsg_r & WSBA_ENA) == 0) {
85 /* Window not in use. */
86 continue;
87 }
88
89 error = vmem_xalloc_addr(CHIP_MEM_ARENA(v),
90 WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r),
91 WSM_LEN(pccsr->tsp_wsm[i].tsg_r),
92 VM_NOSLEEP);
93 if (error) {
94 printf("WARNING: unable to reserve DMA window "
95 "0x%lx - 0x%lx\n",
96 WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r),
97 WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r) +
98 (WSM_LEN(pccsr->tsp_wsm[i].tsg_r) - 1));
99 }
100 }
101 }
102