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 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