x86: use acpi_numa_init to parse on 32-bit numa
authorYinghai Lu <yhlu.kernel@gmail.com>
Tue, 17 Jun 2008 22:41:45 +0000 (15:41 -0700)
committerIngo Molnar <mingo@elte.hu>
Tue, 8 Jul 2008 08:38:47 +0000 (10:38 +0200)
seperate SRAT finding and parsing from get_memcfg_from_srat,
and let getmemcfg_from_srat only handle array from previous step.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/setup_32.c
arch/x86/kernel/srat_32.c
include/asm-x86/acpi.h
include/asm-x86/dmi.h

index 90a2b857b4a703697eafa0fbf437b3522470df73..7e06ecd83174272c21f9f3a7f8c869168781aa5b 100644 (file)
@@ -59,6 +59,7 @@
 #include <asm/setup.h>
 #include <asm/arch_hooks.h>
 #include <asm/sections.h>
+#include <asm/dmi.h>
 #include <asm/io_apic.h>
 #include <asm/ist.h>
 #include <asm/io.h>
@@ -184,6 +185,12 @@ int bootloader_type;
 /* user-defined highmem size */
 static unsigned int highmem_pages = -1;
 
+/*
+ * Early DMI memory
+ */
+int dmi_alloc_index;
+char dmi_alloc_data[DMI_MAX_DATA];
+
 /*
  * Setup options
  */
@@ -775,6 +782,24 @@ void __init setup_arch(char **cmdline_p)
                max_pfn = e820_end_of_ram();
        }
 
+       dmi_scan_machine();
+
+       io_delay_init();
+
+#ifdef CONFIG_ACPI
+       /*
+        * Parse the ACPI tables for possible boot-time SMP configuration.
+        */
+       acpi_boot_table_init();
+#endif
+
+#ifdef CONFIG_ACPI_NUMA
+        /*
+         * Parse SRAT to discover nodes.
+         */
+        acpi_numa_init();
+#endif
+
        max_low_pfn = setup_memory();
 
 #ifdef CONFIG_ACPI_SLEEP
@@ -841,10 +866,6 @@ void __init setup_arch(char **cmdline_p)
 
        paravirt_post_allocator_init();
 
-       dmi_scan_machine();
-
-       io_delay_init();
-
 #ifdef CONFIG_X86_SMP
        /*
         * setup to use the early static init tables during kernel startup
@@ -861,13 +882,6 @@ void __init setup_arch(char **cmdline_p)
        generic_apic_probe();
 #endif
 
-#ifdef CONFIG_ACPI
-       /*
-        * Parse the ACPI tables for possible boot-time SMP configuration.
-        */
-       acpi_boot_table_init();
-#endif
-
        early_quirks();
 
 #ifdef CONFIG_ACPI
index e9d91720a40f1600ce6a9b5aa2457a2edef64837..5978023b799b61def54197fd15495d3fcf0acf35 100644 (file)
@@ -42,7 +42,7 @@
 #define BMAP_TEST(bmap, bit)   ((bmap)[NODE_ARRAY_INDEX(bit)] & (1 << NODE_ARRAY_OFFSET(bit)))
 /* bitmap length; _PXM is at most 255 */
 #define PXM_BITMAP_LEN (MAX_PXM_DOMAINS / 8) 
-static u8 pxm_bitmap[PXM_BITMAP_LEN];  /* bitmap of proximity domains */
+static u8 __initdata pxm_bitmap[PXM_BITMAP_LEN];       /* bitmap of proximity domains */
 
 #define MAX_CHUNKS_PER_NODE    3
 #define MAXCHUNKS              (MAX_CHUNKS_PER_NODE * MAX_NUMNODES)
@@ -53,16 +53,37 @@ struct node_memory_chunk_s {
        u8      nid;            // which cnode contains this chunk?
        u8      bank;           // which mem bank on this node
 };
-static struct node_memory_chunk_s node_memory_chunk[MAXCHUNKS];
+static struct node_memory_chunk_s __initdata node_memory_chunk[MAXCHUNKS];
 
-static int num_memory_chunks;          /* total number of memory chunks */
+static int __initdata num_memory_chunks; /* total number of memory chunks */
 static u8 __initdata apicid_to_pxm[MAX_APICID];
 
+int numa_off __initdata;
+int acpi_numa __initdata;
+
+static __init void bad_srat(void)
+{
+        printk(KERN_ERR "SRAT: SRAT not used.\n");
+        acpi_numa = -1;
+       num_memory_chunks = 0;
+}
+
+static __init inline int srat_disabled(void)
+{
+       return numa_off || acpi_numa < 0;
+}
+
 /* Identify CPU proximity domains */
-static void __init parse_cpu_affinity_structure(char *p)
+void __init
+acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *cpu_affinity)
 {
-       struct acpi_srat_cpu_affinity *cpu_affinity =
-                               (struct acpi_srat_cpu_affinity *) p;
+       if (srat_disabled())
+               return;
+       if (cpu_affinity->header.length !=
+            sizeof(struct acpi_srat_cpu_affinity)) {
+               bad_srat();
+               return;
+       }
 
        if ((cpu_affinity->flags & ACPI_SRAT_CPU_ENABLED) == 0)
                return;         /* empty entry */
@@ -80,14 +101,21 @@ static void __init parse_cpu_affinity_structure(char *p)
  * Identify memory proximity domains and hot-remove capabilities.
  * Fill node memory chunk list structure.
  */
-static void __init parse_memory_affinity_structure (char *sratp)
+void __init
+acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *memory_affinity)
 {
        unsigned long long paddr, size;
        unsigned long start_pfn, end_pfn;
        u8 pxm;
        struct node_memory_chunk_s *p, *q, *pend;
-       struct acpi_srat_mem_affinity *memory_affinity =
-                       (struct acpi_srat_mem_affinity *) sratp;
+
+       if (srat_disabled())
+               return;
+       if (memory_affinity->header.length !=
+            sizeof(struct acpi_srat_mem_affinity)) {
+               bad_srat();
+               return;
+       }
 
        if ((memory_affinity->flags & ACPI_SRAT_MEM_ENABLED) == 0)
                return;         /* empty entry */
@@ -135,6 +163,14 @@ static void __init parse_memory_affinity_structure (char *sratp)
                 "enabled and removable" : "enabled" ) );
 }
 
+/* Callback for SLIT parsing */
+void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
+{
+}
+
+void acpi_numa_arch_fixup(void)
+{
+}
 /*
  * The SRAT table always lists ascending addresses, so can always
  * assume that the first "start" address that you see is the real
@@ -167,39 +203,13 @@ static __init void node_read_chunk(int nid, struct node_memory_chunk_s *memory_c
                node_end_pfn[nid] = memory_chunk->end_pfn;
 }
 
-/* Parse the ACPI Static Resource Affinity Table */
-static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
+int __init get_memcfg_from_srat(void)
 {
-       u8 *start, *end, *p;
        int i, j, nid;
 
-       start = (u8 *)(&(sratp->reserved) + 1); /* skip header */
-       p = start;
-       end = (u8 *)sratp + sratp->header.length;
 
-       memset(pxm_bitmap, 0, sizeof(pxm_bitmap));      /* init proximity domain bitmap */
-       memset(node_memory_chunk, 0, sizeof(node_memory_chunk));
-
-       num_memory_chunks = 0;
-       while (p < end) {
-               switch (*p) {
-               case ACPI_SRAT_TYPE_CPU_AFFINITY:
-                       parse_cpu_affinity_structure(p);
-                       break;
-               case ACPI_SRAT_TYPE_MEMORY_AFFINITY:
-                       parse_memory_affinity_structure(p);
-                       break;
-               default:
-                       printk("ACPI 2.0 SRAT: unknown entry skipped: type=0x%02X, len=%d\n", p[0], p[1]);
-                       break;
-               }
-               p += p[1];
-               if (p[1] == 0) {
-                       printk("acpi20_parse_srat: Entry length value is zero;"
-                               " can't parse any further!\n");
-                       break;
-               }
-       }
+       if (srat_disabled())
+               goto out_fail;
 
        if (num_memory_chunks == 0) {
                printk("could not finy any ACPI SRAT memory areas.\n");
@@ -248,7 +258,7 @@ static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
                e820_register_active_regions(chunk->nid, chunk->start_pfn,
                                             min(chunk->end_pfn, max_pfn));
        }
+
        for_each_online_node(nid) {
                unsigned long start = node_start_pfn[nid];
                unsigned long end = min(node_end_pfn[nid], max_pfn);
@@ -258,118 +268,6 @@ static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
        }
        return 1;
 out_fail:
-       return 0;
-}
-
-struct acpi_static_rsdt {
-       struct acpi_table_rsdt table;
-       u32 padding[32]; /* Allow for 32 more table entries */
-};
-
-int __init get_memcfg_from_srat(void)
-{
-       struct acpi_table_header *header = NULL;
-       struct acpi_table_rsdp *rsdp = NULL;
-       struct acpi_table_rsdt *rsdt = NULL;
-       acpi_native_uint rsdp_address = 0;
-       struct acpi_static_rsdt saved_rsdt;
-       int tables = 0;
-       int i = 0;
-
-       rsdp_address = acpi_os_get_root_pointer();
-       if (!rsdp_address) {
-               printk("%s: System description tables not found\n",
-                      __func__);
-               goto out_err;
-       }
-
-       printk("%s: assigning address to rsdp\n", __func__);
-       rsdp = (struct acpi_table_rsdp *)(u32)rsdp_address;
-       if (!rsdp) {
-               printk("%s: Didn't find ACPI root!\n", __func__);
-               goto out_err;
-       }
-
-       printk(KERN_INFO "%.8s v%d [%.6s]\n", rsdp->signature, rsdp->revision,
-               rsdp->oem_id);
-
-       if (strncmp(rsdp->signature, ACPI_SIG_RSDP,strlen(ACPI_SIG_RSDP))) {
-               printk(KERN_WARNING "%s: RSDP table signature incorrect\n", __func__);
-               goto out_err;
-       }
-
-       rsdt = (struct acpi_table_rsdt *)
-           early_ioremap(rsdp->rsdt_physical_address, sizeof(saved_rsdt));
-
-       if (!rsdt) {
-               printk(KERN_WARNING
-                      "%s: ACPI: Invalid root system description tables (RSDT)\n",
-                      __func__);
-               goto out_err;
-       }
-
-       header = &rsdt->header;
-
-       if (strncmp(header->signature, ACPI_SIG_RSDT, strlen(ACPI_SIG_RSDT))) {
-               printk(KERN_WARNING "ACPI: RSDT signature incorrect\n");
-               early_iounmap(rsdt, sizeof(saved_rsdt));
-               goto out_err;
-       }
-
-       /* 
-        * The number of tables is computed by taking the 
-        * size of all entries (header size minus total 
-        * size of RSDT) divided by the size of each entry
-        * (4-byte table pointers).
-        */
-       tables = (header->length - sizeof(struct acpi_table_header)) / sizeof(u32);
-
-       if (!tables)
-               goto out_err;
-
-       memcpy(&saved_rsdt, rsdt, sizeof(saved_rsdt));
-       early_iounmap(rsdt, sizeof(saved_rsdt));
-       if (saved_rsdt.table.header.length > sizeof(saved_rsdt)) {
-               printk(KERN_WARNING "ACPI: Too big length in RSDT: %d\n",
-                      saved_rsdt.table.header.length);
-               goto out_err;
-       }
-
-       printk("Begin SRAT table scan....%d\n", tables);
-
-       for (i = 0; i < tables; i++){
-               int result;
-               u32 length;
-               /* Map in header, then map in full table length. */
-               header = (struct acpi_table_header *)
-                       early_ioremap(saved_rsdt.table.table_offset_entry[i], sizeof(struct acpi_table_header));
-               if (!header)
-                       break;
-
-                printk(KERN_INFO "ACPI: %4.4s %08lX, %04X\n",
-                           header->signature,
-                  (unsigned long)saved_rsdt.table.table_offset_entry[i],
-                           header->length);
-
-               if (strncmp((char *) &header->signature, ACPI_SIG_SRAT, 4)) {
-                       early_iounmap(header, sizeof(struct acpi_table_header));
-                       continue;
-               }
-
-               length = header->length;
-               early_iounmap(header, sizeof(struct acpi_table_header));
-               header = (struct acpi_table_header *)
-                       early_ioremap(saved_rsdt.table.table_offset_entry[i], length);
-               if (!header)
-                       break;
-
-               /* we've found the srat table. don't need to look at any more tables */
-               result = acpi20_parse_srat((struct acpi_table_srat *)header);
-               early_iounmap(header, length);
-               return result;
-       }
-out_err:
-       remove_all_active_ranges();
        printk("failed to get NUMA memory information from SRAT table\n");
        return 0;
 }
index 73ce5b32443ff0e8fda659ac70e3de7d0062d01a..635d764dc13e346e26dc6f27b8a45d5701a9c55b 100644 (file)
@@ -161,9 +161,7 @@ struct bootnode;
 #ifdef CONFIG_ACPI_NUMA
 extern int acpi_numa;
 extern int acpi_scan_nodes(unsigned long start, unsigned long end);
-#ifdef CONFIG_X86_64
-# define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
-#endif
+#define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
 extern void acpi_fake_nodes(const struct bootnode *fake_nodes,
                                   int num_nodes);
 #else
index 4edf7514a75033d8173428e1ce1640995a87f154..58a86571fe0f8451df8800bd87b218e2be028886 100644 (file)
@@ -3,12 +3,6 @@
 
 #include <asm/io.h>
 
-#ifdef CONFIG_X86_32
-
-#define dmi_alloc alloc_bootmem
-
-#else /* CONFIG_X86_32 */
-
 #define DMI_MAX_DATA 2048
 
 extern int dmi_alloc_index;
@@ -25,8 +19,6 @@ static inline void *dmi_alloc(unsigned len)
        return dmi_alloc_data + idx;
 }
 
-#endif
-
 /* Use early IO mappings for DMI because it's initialized early */
 #define dmi_ioremap early_ioremap
 #define dmi_iounmap early_iounmap