1/* $NetBSD: tsp_pci.c,v 1.12 2021/06/25 03:45:59 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#include <sys/cdefs.h> 34 35__KERNEL_RCSID(0, "$NetBSD: tsp_pci.c,v 1.12 2021/06/25 03:45:59 thorpej Exp $"); 36 37#include <sys/param.h> 38#include <sys/systm.h> 39#include <sys/kernel.h> 40#include <sys/device.h> 41 42#include <dev/pci/pcireg.h> 43#include <dev/pci/pcivar.h> 44 45#include <machine/autoconf.h> 46#include <machine/rpb.h> 47 48#include <alpha/pci/tsreg.h> 49#include <alpha/pci/tsvar.h> 50 51#define tsp_pci() { Generate ctags(1) key. } 52 53static pcireg_t tsp_conf_read(void *, pcitag_t, int); 54static void tsp_conf_write(void *, pcitag_t, int, pcireg_t); 55 56void 57tsp_pci_init(pci_chipset_tag_t pc, void *v) 58{ 59 pc->pc_conf_v = v; 60 pc->pc_conf_read = tsp_conf_read; 61 pc->pc_conf_write = tsp_conf_write; 62} 63 64/* 65 * Tsunami makes this a lot easier than it used to be, automatically 66 * generating type 0 or type 1 cycles, and quietly returning -1 with 67 * no errors on unanswered probes. 68 */ 69static pcireg_t 70tsp_conf_read(void *cpv, pcitag_t tag, int offset) 71{ 72 pcireg_t *datap, data; 73 struct tsp_config *pcp = cpv; 74 75 if ((unsigned int)offset >= PCI_CONF_SIZE) 76 return (pcireg_t) -1; 77 78 datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3)); 79 alpha_mb(); 80 data = *datap; 81 alpha_mb(); 82 return data; 83} 84 85static void 86tsp_conf_write(void *cpv, pcitag_t tag, int offset, pcireg_t data) 87{ 88 pcireg_t *datap; 89 struct tsp_config *pcp = cpv; 90 91 if ((unsigned int)offset >= PCI_CONF_SIZE) 92 return; 93 94 datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3)); 95 alpha_mb(); 96 *datap = data; 97 alpha_mb(); 98} 99 100#define NTH_STR(n, ...) ((const char *[]){ __VA_ARGS__ }[n]) 101 102void 103tsp_print_error(unsigned int indent, unsigned long p_error) 104{ 105 char buf[40]; 106 107 if (PER_INV(p_error)) { 108 IPRINTF(indent, "data invalid\n"); 109 return; 110 } 111 112 if (!PER_ERR(p_error)) 113 return; 114 115 snprintb(buf, 40, 116 "\177\20" 117 "b\0Error lost\0" 118 "b\1PCI SERR#\0" 119 "b\2PCI PERR#\0" 120 "b\3Delayed completion retry timeout\0" 121 "b\4Invalid S/G page table entry\0" 122 "b\5Address parity error\0" 123 "b\6Target abort\0" 124 "b\7PCI read data parity error\0" 125 "b\10no PCI DEVSEL#\0" 126 "b\11unknown\0" 127 "b\12Uncorrectable ECC\0" 128 "b\13Correctable ECC\0", 129 PER_ERR(p_error)); 130 IPRINTF(indent, "error = %s\n", buf); 131 132 if (PER_ECC(p_error)) { 133 IPRINTF(indent, "address = 0x%09lx\n", PER_SADR(p_error)); 134 IPRINTF(indent, "command = 0x%lx<%s>\n", PER_CMD(p_error), 135 NTH_STR(PER_CMD(p_error) & 0x3, 136 "DMA read", "DMA RMW", "?", "S/G read")); 137 IPRINTF(indent, "syndrome = 0x%02lx\n", PER_SYN(p_error)); 138 } else { 139 IPRINTF(indent, "address = 0x%08lx, 0x%lx<%s>\n", 140 PER_PADR(p_error), PER_TRNS(p_error), 141 NTH_STR(PER_TRNS(p_error), "No DAC", "DAC SG Win3", 142 "Monster Window", "Monster Window")); 143 IPRINTF(indent, "command = 0x%lx<%s>\n", PER_CMD(p_error), 144 NTH_STR(PER_CMD(p_error), 145 "PCI IACK", "PCI special cycle", 146 "PCI I/O read", "PCI I/O write", "?", 147 "PCI PTP write", "PCI memory read", 148 "PCI memory write", "PCI CSR write", 149 "?", "?", "?", "?", "?", "?", "?")); 150 } 151} 152