| // SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later |
| /* Copyright 2013-2019 IBM Corp. */ |
| |
| #include <skiboot.h> |
| #include "spira.h" |
| #include <cpu.h> |
| #include <ccan/str/str.h> |
| #include <device.h> |
| |
| #include "hdata.h" |
| |
| struct dt_node * add_core_common(struct dt_node *cpus, |
| const struct sppcia_cpu_cache *cache, |
| const struct sppcia_cpu_timebase *tb, |
| uint32_t int_server, bool okay) |
| { |
| const char *name; |
| struct dt_node *cpu; |
| uint32_t version; |
| uint64_t freq; |
| const uint8_t pa_features_p8[] = { |
| 24, 0, |
| 0xf6, 0x3f, 0xc7, 0xc0, 0x80, 0xd0, 0x80, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, |
| }; |
| const uint8_t pa_features_p9n_dd20[] = { |
| 64, 0, |
| 0xf6, 0x3f, 0xc7, 0xc0, 0x80, 0xd0, 0x80, 0x00, /* 0 .. 7 */ |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 8 .. 15 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 16 .. 23 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 24 .. 31 */ |
| 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, /* 32 .. 39 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 40 .. 47 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 48 .. 55 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 56 .. 63 */ |
| }; |
| const uint8_t pa_features_p9[] = { |
| 64, 0, |
| 0xf6, 0x3f, 0xc7, 0xc0, 0x80, 0xd0, 0x80, 0x00, /* 0 .. 7 */ |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 8 .. 15 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 16 .. 23 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 24 .. 31 */ |
| 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, /* 32 .. 39 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 40 .. 47 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 48 .. 55 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 56 .. 63 */ |
| }; |
| const uint8_t pa_features_p10[] = { |
| 66, 0, |
| 0xf6, 0x3f, 0xc7, 0xc0, 0x80, 0xd0, 0x80, 0x00, /* 0 .. 7 */ |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 8 .. 15 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 16 .. 23 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, /* 24 .. 31 */ |
| 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, /* 32 .. 39 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 40 .. 47 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 48 .. 55 */ |
| 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 56 .. 63 */ |
| 0x80, 0x00, /* 64 .. 65 */ |
| }; |
| |
| const uint8_t *pa_features; |
| size_t pa_features_size; |
| |
| prlog(PR_INFO, " Cache: I=%u D=%u/%u/%u/%u\n", |
| be32_to_cpu(cache->icache_size_kb), |
| be32_to_cpu(cache->l1_dcache_size_kb), |
| be32_to_cpu(cache->l2_dcache_size_kb), |
| be32_to_cpu(cache->l3_dcache_size_kb), |
| be32_to_cpu(cache->l35_dcache_size_kb)); |
| |
| /* Use the boot CPU PVR to make up a CPU name in the device-tree |
| * since the HDAT doesn't seem to tell.... |
| */ |
| version = mfspr(SPR_PVR); |
| switch(PVR_TYPE(version)) { |
| case PVR_TYPE_P8E: |
| case PVR_TYPE_P8: |
| case PVR_TYPE_P8NVL: |
| name = "PowerPC,POWER8"; |
| pa_features = pa_features_p8; |
| pa_features_size = sizeof(pa_features_p8); |
| break; |
| case PVR_TYPE_P9: |
| case PVR_TYPE_P9P: |
| name = "PowerPC,POWER9"; |
| if (is_power9n(version) && |
| (PVR_VERS_MAJ(version) == 2) && |
| (PVR_VERS_MIN(version) == 0)) { |
| /* P9N DD2.0 */ |
| pa_features = pa_features_p9n_dd20; |
| pa_features_size = sizeof(pa_features_p9n_dd20); |
| } else { |
| pa_features = pa_features_p9; |
| pa_features_size = sizeof(pa_features_p9); |
| } |
| break; |
| case PVR_TYPE_P10: |
| name = "PowerPC,POWER10"; |
| pa_features = pa_features_p10; |
| pa_features_size = sizeof(pa_features_p10); |
| break; |
| default: |
| name = "PowerPC,Unknown"; |
| pa_features = NULL; |
| } |
| |
| cpu = dt_new_addr(cpus, name, int_server); |
| assert(cpu); |
| dt_add_property_string(cpu, "device_type", "cpu"); |
| dt_add_property_string(cpu, "status", okay ? "okay" : "bad"); |
| dt_add_property_cells(cpu, "reg", int_server); |
| dt_add_property_cells(cpu, "cpu-version", version); |
| dt_add_property(cpu, "64-bit", NULL, 0); |
| dt_add_property(cpu, "32-64-bridge", NULL, 0); |
| dt_add_property(cpu, "graphics", NULL, 0); |
| dt_add_property(cpu, "general-purpose", NULL, 0); |
| dt_add_property_cells(cpu, "ibm,processor-segment-sizes", |
| 0x1c, 0x28, 0xffffffff, 0xffffffff); |
| dt_add_property_cells(cpu, "ibm,processor-page-sizes", |
| 0xc, 0x10, 0x18, 0x22); |
| |
| if (proc_gen >= proc_gen_p9) |
| dt_add_property_cells(cpu, "ibm,processor-radix-AP-encodings", |
| 0x0000000c, 0xa0000010, 0x20000015, 0x4000001e); |
| if (proc_gen >= proc_gen_p10) { |
| dt_add_property_cells(cpu, "ibm,mmu-pid-bits", 20); |
| dt_add_property_cells(cpu, "ibm,mmu-lpid-bits", 12); |
| } |
| if (lpar_per_core) |
| dt_add_property(cpu, "ibm,mmu-lpar-per-core", NULL, 0); |
| |
| /* HPT segment page size encodings, common to all supported CPUs */ |
| dt_add_property_cells(cpu, "ibm,segment-page-sizes", |
| 0x0c, 0x000, 3, 0x0c, 0x0000, /* 4K seg 4k pages */ |
| 0x10, 0x0007, /* 4K seg 64k pages */ |
| 0x18, 0x0038, /* 4K seg 16M pages */ |
| 0x10, 0x110, 2, 0x10, 0x0001, /* 64K seg 64k pages */ |
| 0x18, 0x0008, /* 64K seg 16M pages */ |
| 0x18, 0x100, 1, 0x18, 0x0000, /* 16M seg 16M pages */ |
| 0x22, 0x120, 1, 0x22, 0x0003); /* 16G seg 16G pages */ |
| |
| |
| if (pa_features) { |
| dt_add_property(cpu, "ibm,pa-features", |
| pa_features, pa_features_size); |
| } |
| dt_add_property_cells(cpu, "ibm,slb-size", 0x20); |
| |
| dt_add_property_cells(cpu, "ibm,vmx", 0x2); |
| dt_add_property_cells(cpu, "ibm,dfp", 0x2); |
| dt_add_property_cells(cpu, "ibm,purr", 0x1); |
| dt_add_property_cells(cpu, "ibm,spurr", 0x1); |
| |
| /* |
| * Do not create "clock-frequency" if the frequency doesn't |
| * fit in a single cell |
| */ |
| freq = ((uint64_t)be32_to_cpu(tb->actual_clock_speed)) * 1000000ul; |
| if (freq <= 0xfffffffful) |
| dt_add_property_cells(cpu, "clock-frequency", freq); |
| dt_add_property_u64(cpu, "ibm,extended-clock-frequency", freq); |
| |
| /* FIXME: Hardcoding is bad. */ |
| dt_add_property_cells(cpu, "timebase-frequency", 512000000); |
| dt_add_property_cells(cpu, "ibm,extended-timebase-frequency", |
| 0, 512000000); |
| |
| dt_add_property_cells(cpu, "reservation-granule-size", |
| be32_to_cpu(cache->reservation_size)); |
| |
| dt_add_property_cells(cpu, "d-tlb-size", |
| be32_to_cpu(cache->dtlb_entries)); |
| dt_add_property_cells(cpu, "i-tlb-size", |
| be32_to_cpu(cache->itlb_entries)); |
| /* Assume unified TLB */ |
| dt_add_property_cells(cpu, "tlb-size", |
| be32_to_cpu(cache->dtlb_entries)); |
| dt_add_property_cells(cpu, "d-tlb-sets", |
| be32_to_cpu(cache->dtlb_assoc_sets)); |
| dt_add_property_cells(cpu, "i-tlb-sets", |
| be32_to_cpu(cache->itlb_assoc_sets)); |
| dt_add_property_cells(cpu, "tlb-sets", |
| be32_to_cpu(cache->dtlb_assoc_sets)); |
| |
| dt_add_property_cells(cpu, "d-cache-block-size", |
| be32_to_cpu(cache->dcache_block_size)); |
| dt_add_property_cells(cpu, "i-cache-block-size", |
| be32_to_cpu(cache->icache_block_size)); |
| dt_add_property_cells(cpu, "d-cache-size", |
| be32_to_cpu(cache->l1_dcache_size_kb)*1024); |
| dt_add_property_cells(cpu, "i-cache-size", |
| be32_to_cpu(cache->icache_size_kb)*1024); |
| dt_add_property_cells(cpu, "i-cache-sets", |
| be32_to_cpu(cache->icache_assoc_sets)); |
| dt_add_property_cells(cpu, "d-cache-sets", |
| be32_to_cpu(cache->dcache_assoc_sets)); |
| |
| if (cache->icache_line_size != cache->icache_block_size) |
| dt_add_property_cells(cpu, "i-cache-line-size", |
| be32_to_cpu(cache->icache_line_size)); |
| if (cache->l1_dcache_line_size != cache->dcache_block_size) |
| dt_add_property_cells(cpu, "d-cache-line-size", |
| be32_to_cpu(cache->l1_dcache_line_size)); |
| return cpu; |
| } |
| |
| void add_core_attr(struct dt_node *cpu, uint32_t attr) |
| { |
| if (attr & CPU_ATTR_UNIFIED_PL1) |
| dt_add_property(cpu, "cache-unified", NULL, 0); |
| if (attr & CPU_ATTR_SPLIT_TLB) |
| dt_add_property(cpu, "tlb-split", NULL, 0); |
| if (attr & CPU_ATTR_TLBIA) |
| dt_add_property(cpu, "tlbia", NULL, 0); |
| if (attr & CPU_ATTR_PERF_MONITOR) |
| dt_add_property_cells(cpu, "performance-monitor", 0, 1); |
| if (attr & CPU_ATTR_EXTERN_CONT) |
| dt_add_property(cpu, "external-control", NULL, 0); |
| } |
| |
| static struct dt_node *create_cache_node(struct dt_node *cpus, |
| const struct sppcia_cpu_cache *cache, |
| const char *name, uint32_t unit_addr, |
| int okay) |
| { |
| struct dt_node *node; |
| |
| node = dt_new_addr(cpus, name, unit_addr); |
| assert(node); |
| |
| dt_add_property_string(node, "device_type", "cache"); |
| dt_add_property_cells(node, "reg", unit_addr); |
| dt_add_property_string(node, "status", okay ? "okay" : "bad"); |
| dt_add_property(node, "cache-unified", NULL, 0); |
| |
| /* Assume cache associavitity sets is same for L2, L3 and L3.5 */ |
| dt_add_property_cells(node, "d-cache-sets", |
| be32_to_cpu(cache->l2_cache_assoc_sets)); |
| dt_add_property_cells(node, "i-cache-sets", |
| be32_to_cpu(cache->l2_cache_assoc_sets)); |
| |
| return node; |
| } |
| |
| static struct dt_node *l35_cache_node(struct dt_node *cpus, |
| const struct sppcia_cpu_cache *cache, |
| uint32_t unit_addr, int okay) |
| { |
| struct dt_node *node; |
| |
| node = create_cache_node(cpus, cache, "l35-cache", unit_addr, okay); |
| |
| dt_add_property_cells(node, "d-cache-size", |
| be32_to_cpu(cache->l35_dcache_size_kb) * 1024); |
| dt_add_property_cells(node, "i-cache-size", |
| be32_to_cpu(cache->l35_dcache_size_kb) * 1024); |
| |
| if (cache->icache_line_size != cache->icache_block_size) |
| dt_add_property_cells(node, "i-cache-line-size", |
| be32_to_cpu(cache->icache_line_size)); |
| if (cache->l35_cache_line_size != cache->dcache_block_size) |
| dt_add_property_cells(node, "d-cache-line-size", |
| be32_to_cpu(cache->l35_cache_line_size)); |
| |
| return node; |
| } |
| |
| static struct dt_node *l3_cache_node(struct dt_node *cpus, |
| const struct sppcia_cpu_cache *cache, |
| uint32_t unit_addr, int okay) |
| { |
| struct dt_node *node; |
| |
| node = create_cache_node(cpus, cache, "l3-cache", unit_addr, okay); |
| |
| dt_add_property_cells(node, "d-cache-size", |
| be32_to_cpu(cache->l3_dcache_size_kb) * 1024); |
| dt_add_property_cells(node, "i-cache-size", |
| be32_to_cpu(cache->l3_dcache_size_kb) * 1024); |
| |
| if (cache->icache_line_size != cache->icache_block_size) |
| dt_add_property_cells(node, "i-cache-line-size", |
| be32_to_cpu(cache->icache_line_size)); |
| if (cache->l3_line_size != cache->dcache_block_size) |
| dt_add_property_cells(node, "d-cache-line-size", |
| be32_to_cpu(cache->l3_line_size)); |
| |
| return node; |
| } |
| |
| static struct dt_node *l2_cache_node(struct dt_node *cpus, |
| const struct sppcia_cpu_cache *cache, |
| uint32_t unit_addr, int okay) |
| { |
| struct dt_node *node; |
| |
| node = create_cache_node(cpus, cache, "l2-cache", unit_addr, okay); |
| |
| dt_add_property_cells(node, "d-cache-size", |
| be32_to_cpu(cache->l2_dcache_size_kb) * 1024); |
| dt_add_property_cells(node, "i-cache-size", |
| be32_to_cpu(cache->l2_dcache_size_kb) * 1024); |
| |
| if (cache->icache_line_size != cache->icache_block_size) |
| dt_add_property_cells(node, "i-cache-line-size", |
| be32_to_cpu(cache->icache_line_size)); |
| if (cache->l2_line_size != cache->dcache_block_size) |
| dt_add_property_cells(node, "d-cache-line-size", |
| be32_to_cpu(cache->l2_line_size)); |
| |
| return node; |
| } |
| |
| static struct dt_node *find_l2_node(struct dt_node *cpus, u32 unit_addr) |
| { |
| char name[32]; |
| |
| snprintf(name, sizeof(name), "l2-cache@%.08x", unit_addr); |
| return dt_find_by_name(cpus, name); |
| } |
| |
| uint32_t add_core_cache_info(struct dt_node *cpus, |
| const struct sppcia_cpu_cache *cache, |
| uint32_t core_pir, int okay) |
| { |
| struct dt_node *l2_node, *l3_node, *l35_node; |
| uint32_t unit_addr; |
| |
| /* |
| * On P9 the L2 is shared by pairs of SMT=4 cores. We only want |
| * to create a cache node for the first of these so we mask off |
| * the low PIR bits to get the unit address of the shared cache. |
| */ |
| if (proc_gen == proc_gen_p9) { |
| core_pir &= ~0x7; |
| |
| l2_node = find_l2_node(cpus, 0x20 << 24 | core_pir); |
| if (l2_node) |
| return l2_node->phandle; |
| } |
| |
| unit_addr = 0x20 << 24 | core_pir; |
| l2_node = l2_cache_node(cpus, cache, unit_addr, okay); |
| |
| unit_addr = 0x30 << 24 | core_pir; |
| l3_node = l3_cache_node(cpus, cache, unit_addr, okay); |
| |
| /* Represents the next level of cache in the memory hierarchy */ |
| dt_add_property_cells(l2_node, "l2-cache", l3_node->phandle); |
| |
| if (be32_to_cpu(cache->l35_dcache_size_kb)) { |
| unit_addr = 0x35 << 24 | core_pir; |
| l35_node = l35_cache_node(cpus, cache, unit_addr, okay); |
| dt_add_property_cells(l3_node, "l2-cache", l35_node->phandle); |
| } |
| |
| return l2_node->phandle; |
| } |