Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
| 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. |
| 5 | * |
| 6 | * Numascale NumaConnect-Specific APIC Code |
| 7 | * |
| 8 | * Copyright (C) 2011 Numascale AS. All rights reserved. |
| 9 | * |
| 10 | * Send feedback to <support@numascale.com> |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | #include <linux/errno.h> |
| 15 | #include <linux/threads.h> |
| 16 | #include <linux/cpumask.h> |
| 17 | #include <linux/string.h> |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/ctype.h> |
| 21 | #include <linux/init.h> |
| 22 | #include <linux/hardirq.h> |
| 23 | #include <linux/delay.h> |
| 24 | |
Daniel J Blueman | f9726bf | 2012-12-07 14:24:32 -0700 | [diff] [blame] | 25 | #include <asm/numachip/numachip.h> |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 26 | #include <asm/numachip/numachip_csr.h> |
| 27 | #include <asm/smp.h> |
| 28 | #include <asm/apic.h> |
| 29 | #include <asm/ipi.h> |
| 30 | #include <asm/apic_flat_64.h> |
Alexander Duyck | fb50b02 | 2012-11-16 13:53:09 -0800 | [diff] [blame] | 31 | #include <asm/pgtable.h> |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 32 | |
| 33 | static int numachip_system __read_mostly; |
| 34 | |
Andi Kleen | 75fdd15 | 2012-10-04 17:11:42 -0700 | [diff] [blame] | 35 | static const struct apic apic_numachip __read_mostly; |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 36 | |
| 37 | static unsigned int get_apic_id(unsigned long x) |
| 38 | { |
| 39 | unsigned long value; |
| 40 | unsigned int id; |
| 41 | |
| 42 | rdmsrl(MSR_FAM10H_NODE_ID, value); |
| 43 | id = ((x >> 24) & 0xffU) | ((value << 2) & 0x3f00U); |
| 44 | |
| 45 | return id; |
| 46 | } |
| 47 | |
| 48 | static unsigned long set_apic_id(unsigned int id) |
| 49 | { |
| 50 | unsigned long x; |
| 51 | |
| 52 | x = ((id & 0xffU) << 24); |
| 53 | return x; |
| 54 | } |
| 55 | |
| 56 | static unsigned int read_xapic_id(void) |
| 57 | { |
| 58 | return get_apic_id(apic_read(APIC_ID)); |
| 59 | } |
| 60 | |
Daniel J Blueman | fa63030 | 2012-03-14 15:17:34 +0800 | [diff] [blame] | 61 | static int numachip_apic_id_valid(int apicid) |
| 62 | { |
| 63 | /* Trust what bootloader passes in MADT */ |
| 64 | return 1; |
| 65 | } |
| 66 | |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 67 | static int numachip_apic_id_registered(void) |
| 68 | { |
| 69 | return physid_isset(read_xapic_id(), phys_cpu_present_map); |
| 70 | } |
| 71 | |
| 72 | static int numachip_phys_pkg_id(int initial_apic_id, int index_msb) |
| 73 | { |
| 74 | return initial_apic_id >> index_msb; |
| 75 | } |
| 76 | |
Paul Gortmaker | 148f9bb | 2013-06-18 18:23:59 -0400 | [diff] [blame] | 77 | static int numachip_wakeup_secondary(int phys_apicid, unsigned long start_rip) |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 78 | { |
| 79 | union numachip_csr_g3_ext_irq_gen int_gen; |
| 80 | |
| 81 | int_gen.s._destination_apic_id = phys_apicid; |
| 82 | int_gen.s._vector = 0; |
| 83 | int_gen.s._msgtype = APIC_DM_INIT >> 8; |
| 84 | int_gen.s._index = 0; |
| 85 | |
| 86 | write_lcsr(CSR_G3_EXT_IRQ_GEN, int_gen.v); |
| 87 | |
| 88 | int_gen.s._msgtype = APIC_DM_STARTUP >> 8; |
| 89 | int_gen.s._vector = start_rip >> 12; |
| 90 | |
| 91 | write_lcsr(CSR_G3_EXT_IRQ_GEN, int_gen.v); |
| 92 | |
| 93 | atomic_set(&init_deasserted, 1); |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | static void numachip_send_IPI_one(int cpu, int vector) |
| 98 | { |
| 99 | union numachip_csr_g3_ext_irq_gen int_gen; |
| 100 | int apicid = per_cpu(x86_cpu_to_apicid, cpu); |
| 101 | |
| 102 | int_gen.s._destination_apic_id = apicid; |
| 103 | int_gen.s._vector = vector; |
| 104 | int_gen.s._msgtype = (vector == NMI_VECTOR ? APIC_DM_NMI : APIC_DM_FIXED) >> 8; |
| 105 | int_gen.s._index = 0; |
| 106 | |
| 107 | write_lcsr(CSR_G3_EXT_IRQ_GEN, int_gen.v); |
| 108 | } |
| 109 | |
| 110 | static void numachip_send_IPI_mask(const struct cpumask *mask, int vector) |
| 111 | { |
| 112 | unsigned int cpu; |
| 113 | |
| 114 | for_each_cpu(cpu, mask) |
| 115 | numachip_send_IPI_one(cpu, vector); |
| 116 | } |
| 117 | |
| 118 | static void numachip_send_IPI_mask_allbutself(const struct cpumask *mask, |
| 119 | int vector) |
| 120 | { |
| 121 | unsigned int this_cpu = smp_processor_id(); |
| 122 | unsigned int cpu; |
| 123 | |
| 124 | for_each_cpu(cpu, mask) { |
| 125 | if (cpu != this_cpu) |
| 126 | numachip_send_IPI_one(cpu, vector); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | static void numachip_send_IPI_allbutself(int vector) |
| 131 | { |
| 132 | unsigned int this_cpu = smp_processor_id(); |
| 133 | unsigned int cpu; |
| 134 | |
| 135 | for_each_online_cpu(cpu) { |
| 136 | if (cpu != this_cpu) |
| 137 | numachip_send_IPI_one(cpu, vector); |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | static void numachip_send_IPI_all(int vector) |
| 142 | { |
| 143 | numachip_send_IPI_mask(cpu_online_mask, vector); |
| 144 | } |
| 145 | |
| 146 | static void numachip_send_IPI_self(int vector) |
| 147 | { |
| 148 | __default_send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL); |
| 149 | } |
| 150 | |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 151 | static int __init numachip_probe(void) |
| 152 | { |
| 153 | return apic == &apic_numachip; |
| 154 | } |
| 155 | |
| 156 | static void __init map_csrs(void) |
| 157 | { |
| 158 | printk(KERN_INFO "NumaChip: Mapping local CSR space (%016llx - %016llx)\n", |
| 159 | NUMACHIP_LCSR_BASE, NUMACHIP_LCSR_BASE + NUMACHIP_LCSR_SIZE - 1); |
| 160 | init_extra_mapping_uc(NUMACHIP_LCSR_BASE, NUMACHIP_LCSR_SIZE); |
| 161 | |
| 162 | printk(KERN_INFO "NumaChip: Mapping global CSR space (%016llx - %016llx)\n", |
| 163 | NUMACHIP_GCSR_BASE, NUMACHIP_GCSR_BASE + NUMACHIP_GCSR_SIZE - 1); |
| 164 | init_extra_mapping_uc(NUMACHIP_GCSR_BASE, NUMACHIP_GCSR_SIZE); |
| 165 | } |
| 166 | |
| 167 | static void fixup_cpu_id(struct cpuinfo_x86 *c, int node) |
| 168 | { |
Andreas Herrmann | 6889463 | 2012-04-02 18:06:48 +0200 | [diff] [blame] | 169 | |
| 170 | if (c->phys_proc_id != node) { |
| 171 | c->phys_proc_id = node; |
| 172 | per_cpu(cpu_llc_id, smp_processor_id()) = node; |
| 173 | } |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 174 | } |
| 175 | |
| 176 | static int __init numachip_system_init(void) |
| 177 | { |
| 178 | unsigned int val; |
| 179 | |
| 180 | if (!numachip_system) |
| 181 | return 0; |
| 182 | |
| 183 | x86_cpuinit.fixup_cpu_id = fixup_cpu_id; |
Daniel J Blueman | f9726bf | 2012-12-07 14:24:32 -0700 | [diff] [blame] | 184 | x86_init.pci.arch_init = pci_numachip_init; |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 185 | |
| 186 | map_csrs(); |
| 187 | |
| 188 | val = read_lcsr(CSR_G0_NODE_IDS); |
| 189 | printk(KERN_INFO "NumaChip: Local NodeID = %08x\n", val); |
| 190 | |
| 191 | return 0; |
| 192 | } |
| 193 | early_initcall(numachip_system_init); |
| 194 | |
Steffen Persvold | b7157ac | 2012-03-16 20:25:35 +0100 | [diff] [blame] | 195 | static int numachip_acpi_madt_oem_check(char *oem_id, char *oem_table_id) |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 196 | { |
| 197 | if (!strncmp(oem_id, "NUMASC", 6)) { |
| 198 | numachip_system = 1; |
| 199 | return 1; |
| 200 | } |
| 201 | |
| 202 | return 0; |
| 203 | } |
| 204 | |
Andi Kleen | 75fdd15 | 2012-10-04 17:11:42 -0700 | [diff] [blame] | 205 | static const struct apic apic_numachip __refconst = { |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 206 | |
| 207 | .name = "NumaConnect system", |
| 208 | .probe = numachip_probe, |
| 209 | .acpi_madt_oem_check = numachip_acpi_madt_oem_check, |
Daniel J Blueman | fa63030 | 2012-03-14 15:17:34 +0800 | [diff] [blame] | 210 | .apic_id_valid = numachip_apic_id_valid, |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 211 | .apic_id_registered = numachip_apic_id_registered, |
| 212 | |
| 213 | .irq_delivery_mode = dest_Fixed, |
| 214 | .irq_dest_mode = 0, /* physical */ |
| 215 | |
Alexander Gordeev | bf721d3 | 2012-06-05 13:23:29 +0200 | [diff] [blame] | 216 | .target_cpus = online_target_cpus, |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 217 | .disable_esr = 0, |
| 218 | .dest_logical = 0, |
| 219 | .check_apicid_used = NULL, |
| 220 | .check_apicid_present = NULL, |
| 221 | |
Alexander Gordeev | 9d8e106 | 2012-06-07 15:14:49 +0200 | [diff] [blame] | 222 | .vector_allocation_domain = default_vector_allocation_domain, |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 223 | .init_apic_ldr = flat_init_apic_ldr, |
| 224 | |
| 225 | .ioapic_phys_id_map = NULL, |
| 226 | .setup_apic_routing = NULL, |
| 227 | .multi_timer_check = NULL, |
| 228 | .cpu_present_to_apicid = default_cpu_present_to_apicid, |
| 229 | .apicid_to_cpu_present = NULL, |
| 230 | .setup_portio_remap = NULL, |
| 231 | .check_phys_apicid_present = default_check_phys_apicid_present, |
| 232 | .enable_apic_mode = NULL, |
| 233 | .phys_pkg_id = numachip_phys_pkg_id, |
| 234 | .mps_oem_check = NULL, |
| 235 | |
| 236 | .get_apic_id = get_apic_id, |
| 237 | .set_apic_id = set_apic_id, |
| 238 | .apic_id_mask = 0xffU << 24, |
| 239 | |
Alexander Gordeev | 6398268 | 2012-06-05 13:23:44 +0200 | [diff] [blame] | 240 | .cpu_mask_to_apicid_and = default_cpu_mask_to_apicid_and, |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 241 | |
| 242 | .send_IPI_mask = numachip_send_IPI_mask, |
| 243 | .send_IPI_mask_allbutself = numachip_send_IPI_mask_allbutself, |
| 244 | .send_IPI_allbutself = numachip_send_IPI_allbutself, |
| 245 | .send_IPI_all = numachip_send_IPI_all, |
| 246 | .send_IPI_self = numachip_send_IPI_self, |
| 247 | |
| 248 | .wakeup_secondary_cpu = numachip_wakeup_secondary, |
| 249 | .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, |
| 250 | .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, |
| 251 | .wait_for_init_deassert = NULL, |
| 252 | .smp_callin_clear_local_apic = NULL, |
| 253 | .inquire_remote_apic = NULL, /* REMRD not supported */ |
| 254 | |
| 255 | .read = native_apic_mem_read, |
| 256 | .write = native_apic_mem_write, |
Michael S. Tsirkin | 2a43195 | 2012-05-16 19:03:52 +0300 | [diff] [blame] | 257 | .eoi_write = native_apic_mem_write, |
Steffen Persvold | 44b111b | 2011-12-06 00:07:26 +0800 | [diff] [blame] | 258 | .icr_read = native_apic_icr_read, |
| 259 | .icr_write = native_apic_icr_write, |
| 260 | .wait_icr_idle = native_apic_wait_icr_idle, |
| 261 | .safe_wait_icr_idle = native_safe_apic_wait_icr_idle, |
| 262 | }; |
| 263 | apic_driver(apic_numachip); |
| 264 | |