1 /* $OpenBSD: tsp_bus_mem.c,v 1.4 2003/09/02 17:25:21 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 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%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