1 /* $NetBSD: tsp_bus_mem.c,v 1.8 2005/12/11 12:16:17 christos 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 1.8 2005/12/11 12:16:17 christos 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 <uvm/uvm_extern.h> 44 45 #include <machine/bus.h> 46 #include <machine/autoconf.h> 47 #include <machine/rpb.h> 48 49 #include <alpha/pci/tsreg.h> 50 #include <alpha/pci/tsvar.h> 51 52 #define tsp_bus_mem() { Generate ctags(1) key. } 53 54 #define CHIP tsp 55 56 #define CHIP_EX_MALLOC_SAFE(v) (((struct tsp_config *)(v))->pc_mallocsafe) 57 #define CHIP_MEM_EXTENT(v) (((struct tsp_config *)(v))->pc_mem_ex) 58 59 #define CHIP_MEM_SYS_START(v) (((struct tsp_config *)(v))->pc_iobase) 60 61 /* 62 * Tsunami core logic appears on EV6. We require at least EV56 63 * support for the assembler to emit BWX opcodes. 64 */ 65 __asm(".arch ev6"); 66 67 #include <alpha/pci/pci_bwx_bus_mem_chipdep.c> 68 69 void 70 tsp_bus_mem_init2(bus_space_tag_t t, void *v) 71 { 72 struct tsp_config *pcp = v; 73 struct ts_pchip *pccsr = pcp->pc_csr; 74 int i, error; 75 76 /* 77 * Allocate the DMA windows out of the extent map. 78 */ 79 for (i = 0; i < 4; i++) { 80 alpha_mb(); 81 if ((pccsr->tsp_wsba[i].tsg_r & WSBA_ENA) == 0) { 82 /* Window not in use. */ 83 continue; 84 } 85 86 error = extent_alloc_region(CHIP_MEM_EXTENT(v), 87 WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r), 88 WSM_LEN(pccsr->tsp_wsm[i].tsg_r), 89 EX_NOWAIT | (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0)); 90 if (error) { 91 printf("WARNING: unable to reserve DMA window " 92 "0x%lx - 0x%lx\n", 93 WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r), 94 WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r) + 95 (WSM_LEN(pccsr->tsp_wsm[i].tsg_r) - 1)); 96 } 97 } 98 } 99