1 /* $NetBSD: sal.c,v 1.4 2023/12/20 15:00:08 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 Doug Rabson 5 * 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "opt_multiprocessor.h" 30 31 #include <sys/cdefs.h> 32 33 #include <sys/param.h> 34 #include <sys/reboot.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 38 #include <machine/efi.h> 39 #include <machine/vmparam.h> 40 #include <machine/md_var.h> 41 #include <machine/sal.h> 42 #include <machine/smp.h> 43 44 /* 45 * IPIs are used more genericly than only 46 * for inter-processor interrupts. Don't 47 * make it a SMP specific thing... 48 */ 49 int ipi_vector[IPI_COUNT]; 50 51 static struct ia64_fdesc sal_fdesc; 52 static sal_entry_t fake_sal; 53 54 extern u_int64_t ia64_pal_entry; 55 sal_entry_t *ia64_sal_entry = fake_sal; 56 57 static struct uuid sal_table = EFI_TABLE_SAL; 58 static struct sal_system_table *sal_systbl; 59 60 static struct ia64_sal_result 61 fake_sal(u_int64_t a1, u_int64_t a2, u_int64_t a3, u_int64_t a4, 62 u_int64_t a5, u_int64_t a6, u_int64_t a7, u_int64_t a8) 63 { 64 struct ia64_sal_result res; 65 res.sal_status = -3; 66 res.sal_result[0] = 0; 67 res.sal_result[1] = 0; 68 res.sal_result[2] = 0; 69 return res; 70 } 71 72 static void 73 setup_ipi_vectors(int ceil) 74 { 75 int ipi; 76 77 ipi_vector[IPI_MCA_RENDEZ] = ceil - 0x10; 78 ipi_vector[IPI_MCA_CMCV] = ceil - 0x30; 79 ipi_vector[IPI_TEST] = ceil - 0x30 + 1; 80 81 ipi = IPI_AST; /* First generic IPI. */ 82 ceil -= 0x20; /* First vector in group. */ 83 while (ipi < IPI_COUNT) 84 ipi_vector[ipi++] = ceil++; 85 } 86 87 void 88 ia64_sal_init(void) 89 { 90 static int sizes[6] = { 91 48, 32, 16, 32, 16, 16 92 }; 93 u_int8_t *p; 94 int i; 95 96 sal_systbl = efi_get_table(&sal_table); 97 if (sal_systbl == NULL) 98 return; 99 100 if (memcmp(sal_systbl->sal_signature, SAL_SIGNATURE, 4)) { 101 printf("Bad signature for SAL System Table\n"); 102 return; 103 } 104 105 p = (u_int8_t *) (sal_systbl + 1); 106 for (i = 0; i < sal_systbl->sal_entry_count; i++) { 107 switch (*p) { 108 case 0: { 109 struct sal_entrypoint_descriptor *dp; 110 111 dp = (struct sal_entrypoint_descriptor*)p; 112 ia64_pal_entry = IA64_PHYS_TO_RR7(dp->sale_pal_proc); 113 if (bootverbose) 114 printf("PAL Proc at 0x%lx\n", ia64_pal_entry); 115 sal_fdesc.func = IA64_PHYS_TO_RR7(dp->sale_sal_proc); 116 sal_fdesc.gp = IA64_PHYS_TO_RR7(dp->sale_sal_gp); 117 if (bootverbose) 118 printf("SAL Proc at 0x%lx, GP at 0x%lx\n", 119 sal_fdesc.func, sal_fdesc.gp); 120 ia64_sal_entry = (sal_entry_t *) &sal_fdesc; 121 break; 122 } 123 case 5: { 124 struct sal_ap_wakeup_descriptor *dp; 125 #ifdef MULTIPROCESSOR 126 struct ia64_sal_result result; 127 struct ia64_fdesc *fd; 128 #endif 129 130 dp = (struct sal_ap_wakeup_descriptor*)p; 131 if (dp->sale_mechanism != 0) { 132 printf("SAL: unsupported AP wake-up mechanism " 133 "(%d)\n", dp->sale_mechanism); 134 break; 135 } 136 137 if (dp->sale_vector < 0x10 || dp->sale_vector > 0xff) { 138 printf("SAL: invalid AP wake-up vector " 139 "(0x%lx)\n", dp->sale_vector); 140 break; 141 } 142 143 /* 144 * SAL documents that the wake-up vector should be 145 * high (close to 255). The MCA rendezvous vector 146 * should be less than the wake-up vector, but still 147 * "high". We use the following priority assignment: 148 * Wake-up: priority of the sale_vector 149 * Rendezvous: priority-1 150 * Generic IPIs: priority-2 151 * Special IPIs: priority-3 152 * Consequently, the wake-up priority should be at 153 * least 4 (ie vector >= 0x40). 154 */ 155 if (dp->sale_vector < 0x40) { 156 printf("SAL: AP wake-up vector too low " 157 "(0x%lx)\n", dp->sale_vector); 158 break; 159 } 160 161 if (bootverbose) 162 printf("SAL: AP wake-up vector: 0x%lx\n", 163 dp->sale_vector); 164 165 ipi_vector[IPI_AP_WAKEUP] = dp->sale_vector; 166 setup_ipi_vectors(dp->sale_vector & 0xf0); 167 168 #ifdef MULTIPROCESSOR 169 fd = (struct ia64_fdesc *) os_boot_rendez; 170 result = ia64_sal_entry(SAL_SET_VECTORS, 171 SAL_OS_BOOT_RENDEZ, ia64_tpa(fd->func), 172 ia64_tpa(fd->gp), 0, 0, 0, 0); 173 #endif 174 175 break; 176 } 177 } 178 p += sizes[*p]; 179 } 180 181 if (ipi_vector[IPI_AP_WAKEUP] == 0) 182 setup_ipi_vectors(0xf0); 183 } 184
Indexes created Sat Sep 20 22:09:52 GMT 2025