/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1999,2001-2005 Silicon Graphics, Inc. All rights reserved. */ #include <linux/config.h> #include <linux/module.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/kernel.h> #include <linux/kdev_t.h> #include <linux/string.h> #include <linux/tty.h> #include <linux/console.h> #include <linux/timex.h> #include <linux/sched.h> #include <linux/ioport.h> #include <linux/mm.h> #include <linux/serial.h> #include <linux/irq.h> #include <linux/bootmem.h> #include <linux/mmzone.h> #include <linux/interrupt.h> #include <linux/acpi.h> #include <linux/compiler.h> #include <linux/sched.h> #include <linux/root_dev.h> #include <linux/nodemask.h> #include <linux/pm.h> #include <asm/io.h> #include <asm/sal.h> #include <asm/machvec.h> #include <asm/system.h> #include <asm/processor.h> #include <asm/vga.h> #include <asm/sn/arch.h> #include <asm/sn/addrs.h> #include <asm/sn/pda.h> #include <asm/sn/nodepda.h> #include <asm/sn/sn_cpuid.h> #include <asm/sn/simulator.h> #include <asm/sn/leds.h> #include <asm/sn/bte.h> #include <asm/sn/shub_mmr.h> #include <asm/sn/clksupport.h> #include <asm/sn/sn_sal.h> #include <asm/sn/geo.h> #include "xtalk/xwidgetdev.h" #include "xtalk/hubdev.h" #include <asm/sn/klconfig.h> DEFINE_PER_CPU(struct pda_s, pda_percpu); #define MAX_PHYS_MEMORY (1UL << 49) /* 1 TB */ lboard_t *root_lboard[MAX_COMPACT_NODES]; extern void bte_init_node(nodepda_t *, cnodeid_t); extern void sn_timer_init(void); extern unsigned long last_time_offset; extern void (*ia64_mark_idle) (int); extern void snidle(int); extern unsigned char acpi_kbd_controller_present; unsigned long sn_rtc_cycles_per_second; EXPORT_SYMBOL(sn_rtc_cycles_per_second); DEFINE_PER_CPU(struct sn_hub_info_s, __sn_hub_info); EXPORT_PER_CPU_SYMBOL(__sn_hub_info); DEFINE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_NUMNODES]); EXPORT_PER_CPU_SYMBOL(__sn_cnodeid_to_nasid); DEFINE_PER_CPU(struct nodepda_s *, __sn_nodepda); EXPORT_PER_CPU_SYMBOL(__sn_nodepda); partid_t sn_partid = -1; EXPORT_SYMBOL(sn_partid); char sn_system_serial_number_string[128]; EXPORT_SYMBOL(sn_system_serial_number_string); u64 sn_partition_serial_number; EXPORT_SYMBOL(sn_partition_serial_number); u8 sn_partition_id; EXPORT_SYMBOL(sn_partition_id); u8 sn_system_size; EXPORT_SYMBOL(sn_system_size); u8 sn_sharing_domain_size; EXPORT_SYMBOL(sn_sharing_domain_size); u8 sn_coherency_id; EXPORT_SYMBOL(sn_coherency_id); u8 sn_region_size; EXPORT_SYMBOL(sn_region_size); int sn_prom_type; /* 0=hardware, 1=medusa/realprom, 2=medusa/fakeprom */ short physical_node_map[MAX_PHYSNODE_ID]; EXPORT_SYMBOL(physical_node_map); int numionodes; static void sn_init_pdas(char **); static void scan_for_ionodes(void); static nodepda_t *nodepdaindr[MAX_COMPACT_NODES]; /* * The format of "screen_info" is strange, and due to early i386-setup * code. This is just enough to make the console code think we're on a * VGA color display. */ struct screen_info sn_screen_info = { .orig_x = 0, .orig_y = 0, .orig_video_mode = 3, .orig_video_cols = 80, .orig_video_ega_bx = 3, .orig_video_lines = 25, .orig_video_isVGA = 1, .orig_video_points = 16 }; /* * This is here so we can use the CMOS detection in ide-probe.c to * determine what drives are present. In theory, we don't need this * as the auto-detection could be done via ide-probe.c:do_probe() but * in practice that would be much slower, which is painful when * running in the simulator. Note that passing zeroes in DRIVE_INFO * is sufficient (the IDE driver will autodetect the drive geometry). */ #ifdef CONFIG_IA64_GENERIC extern char drive_info[4 * 16]; #else char drive_info[4 * 16]; #endif /* * Get nasid of current cpu early in boot before nodepda is initialized */ static int boot_get_nasid(void) { int nasid; if (ia64_sn_get_sapic_info(get_sapicid(), &nasid, NULL, NULL)) BUG(); return nasid; } /* * This routine can only be used during init, since * smp_boot_data is an init data structure. * We have to use smp_boot_data.cpu_phys_id to find * the physical id of the processor because the normal * cpu_physical_id() relies on data structures that * may not be initialized yet. */ static int __init pxm_to_nasid(int pxm) { int i; int nid; nid = pxm_to_nid_map[pxm]; for (i = 0; i < num_node_memblks; i++) { if (node_memblk[i].nid == nid) { return NASID_GET(node_memblk[i].start_paddr); } } return -1; } /** * early_sn_setup - early setup routine for SN platforms * * Sets up an initial console to aid debugging. Intended primarily * for bringup. See start_kernel() in init/main.c. */ void __init early_sn_setup(void) { efi_system_table_t *efi_systab; efi_config_table_t *config_tables; struct ia64_sal_systab *sal_systab; struct ia64_sal_desc_entry_point *ep; char *p; int i, j; /* * Parse enough of the SAL tables to locate the SAL entry point. Since, console * IO on SN2 is done via SAL calls, early_printk won't work without this. * * This code duplicates some of the ACPI table parsing that is in efi.c & sal.c. * Any changes to those file may have to be made hereas well. */ efi_systab = (efi_system_table_t *) __va(ia64_boot_param->efi_systab); config_tables = __va(efi_systab->tables); for (i = 0; i < efi_systab->nr_tables; i++) { if (efi_guidcmp(config_tables[i].guid, SAL_SYSTEM_TABLE_GUID) == 0) { sal_systab = __va(config_tables[i].table); p = (char *)(sal_systab + 1); for (j = 0; j < sal_systab->entry_count; j++) { if (*p == SAL_DESC_ENTRY_POINT) { ep = (struct ia64_sal_desc_entry_point *)p; ia64_sal_handler_init(__va (ep->sal_proc), __va(ep->gp)); return; } p += SAL_DESC_SIZE(*p); } } } /* Uh-oh, SAL not available?? */ printk(KERN_ERR "failed to find SAL entry point\n"); } extern int platform_intr_list[]; extern nasid_t master_nasid; static int __initdata shub_1_1_found = 0; /* * sn_check_for_wars * * Set flag for enabling shub specific wars */ static inline int __init is_shub_1_1(int nasid) { unsigned long id; int rev; if (is_shub2()) return 0; id = REMOTE_HUB_L(nasid, SH1_SHUB_ID); rev = (id & SH1_SHUB_ID_REVISION_MASK) >> SH1_SHUB_ID_REVISION_SHFT; return rev <= 2; } static void __init sn_check_for_wars(void) { int cnode; if (is_shub2()) { /* none yet */ } else { for_each_online_node(cnode) { if (is_shub_1_1(cnodeid_to_nasid(cnode))) shub_1_1_found = 1; } } } /** * sn_setup - SN platform setup routine * @cmdline_p: kernel command line * * Handles platform setup for SN machines. This includes determining * the RTC frequency (via a SAL call), initializing secondary CPUs, and * setting up per-node data areas. The console is also initialized here. */ void __init sn_setup(char **cmdline_p) { long status, ticks_per_sec, drift; int pxm; u32 version = sn_sal_rev(); extern void sn_cpu_init(void); ia64_sn_plat_set_error_handling_features(); #if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE) /* * If there was a primary vga adapter identified through the * EFI PCDP table, make it the preferred console. Otherwise * zero out conswitchp. */ if (vga_console_membase) { /* usable vga ... make tty0 the preferred default console */ add_preferred_console("tty", 0, NULL); } else { printk(KERN_DEBUG "SGI: Disabling VGA console\n"); #ifdef CONFIG_DUMMY_CONSOLE conswitchp = &dummy_con; #else conswitchp = NULL; #endif /* CONFIG_DUMMY_CONSOLE */ } #endif /* def(CONFIG_VT) && def(CONFIG_VGA_CONSOLE) */ MAX_DMA_ADDRESS = PAGE_OFFSET + MAX_PHYS_MEMORY; memset(physical_node_map, -1, sizeof(physical_node_map)); for (pxm = 0; pxm < MAX_PXM_DOMAINS; pxm++) if (pxm_to_nid_map[pxm] != -1) physical_node_map[pxm_to_nasid(pxm)] = pxm_to_nid_map[pxm]; /* * Old PROMs do not provide an ACPI FADT. Disable legacy keyboard * support here so we don't have to listen to failed keyboard probe * messages. */ if (version <= 0x0209 && acpi_kbd_controller_present) { printk(KERN_INFO "Disabling legacy keyboard support as prom " "is too old and doesn't provide FADT\n"); acpi_kbd_controller_present = 0; } printk("SGI SAL version %x.%02x\n", version >> 8, version & 0x00FF); /* * Confirm the SAL we're running on is recent enough... */ if (version < SN_SAL_MIN_VERSION) { printk(KERN_ERR "This kernel needs SGI SAL version >= " "%x.%02x\n", SN_SAL_MIN_VERSION >> 8, SN_SAL_MIN_VERSION & 0x00FF); panic("PROM version too old\n"); } master_nasid = boot_get_nasid(); status = ia64_sal_freq_base(SAL_FREQ_BASE_REALTIME_CLOCK, &ticks_per_sec, &drift); if (status != 0 || ticks_per_sec < 100000) { printk(KERN_WARNING "unable to determine platform RTC clock frequency, guessing.\n"); /* PROM gives wrong value for clock freq. so guess */ sn_rtc_cycles_per_second = 1000000000000UL / 30000UL; } else sn_rtc_cycles_per_second = ticks_per_sec; platform_intr_list[ACPI_INTERRUPT_CPEI] = IA64_CPE_VECTOR; /* * we set the default root device to /dev/hda * to make simulation easy */ ROOT_DEV = Root_HDA1; /* * Create the PDAs and NODEPDAs for all the cpus. */ sn_init_pdas(cmdline_p); ia64_mark_idle = &snidle; /* * For the bootcpu, we do this here. All other cpus will make the * call as part of cpu_init in slave cpu initialization. */ sn_cpu_init(); #ifdef CONFIG_SMP init_smp_config(); #endif screen_info = sn_screen_info; sn_timer_init(); /* * set pm_power_off to a SAL call to allow * sn machines to power off. The SAL call can be replaced * by an ACPI interface call when ACPI is fully implemented * for sn. */ pm_power_off = ia64_sn_power_down; } /** * sn_init_pdas - setup node data areas * * One time setup for Node Data Area. Called by sn_setup(). */ static void __init sn_init_pdas(char **cmdline_p) { cnodeid_t cnode; memset(sn_cnodeid_to_nasid, -1, sizeof(__ia64_per_cpu_var(__sn_cnodeid_to_nasid))); for_each_online_node(cnode) sn_cnodeid_to_nasid[cnode] = pxm_to_nasid(nid_to_pxm_map[cnode]); numionodes = num_online_nodes(); scan_for_ionodes(); /* * Allocate & initalize the nodepda for each node. */ for_each_online_node(cnode) { nodepdaindr[cnode] = alloc_bootmem_node(NODE_DATA(cnode), sizeof(nodepda_t)); memset(nodepdaindr[cnode], 0, sizeof(nodepda_t)); memset(nodepdaindr[cnode]->phys_cpuid, -1, sizeof(nodepdaindr[cnode]->phys_cpuid)); spin_lock_init(&nodepdaindr[cnode]->ptc_lock); } /* * Allocate & initialize nodepda for TIOs. For now, put them on node 0. */ for (cnode = num_online_nodes(); cnode < numionodes; cnode++) { nodepdaindr[cnode] = alloc_bootmem_node(NODE_DATA(0), sizeof(nodepda_t)); memset(nodepdaindr[cnode], 0, sizeof(nodepda_t)); } /* * Now copy the array of nodepda pointers to each nodepda. */ for (cnode = 0; cnode < numionodes; cnode++) memcpy(nodepdaindr[cnode]->pernode_pdaindr, nodepdaindr, sizeof(nodepdaindr)); /* * Set up IO related platform-dependent nodepda fields. * The following routine actually sets up the hubinfo struct * in nodepda. */ for_each_online_node(cnode) { bte_init_node(nodepdaindr[cnode], cnode); } /* * Initialize the per node hubdev. This includes IO Nodes and * headless/memless nodes. */ for (cnode = 0; cnode < numionodes; cnode++) { hubdev_init_node(nodepdaindr[cnode], cnode); } } /** * sn_cpu_init - initialize per-cpu data areas * @cpuid: cpuid of the caller * * Called during cpu initialization on each cpu as it starts. * Currently, initializes the per-cpu data area for SNIA. * Also sets up a few fields in the nodepda. Also known as * platform_cpu_init() by the ia64 machvec code. */ void __init sn_cpu_init(void) { int cpuid; int cpuphyid; int nasid; int subnode; int slice; int cnode; int i; static int wars_have_been_checked; if (smp_processor_id() == 0 && IS_MEDUSA()) { if (ia64_sn_is_fake_prom()) sn_prom_type = 2; else sn_prom_type = 1; printk("Running on medusa with %s PROM\n", (sn_prom_type == 1) ? "real" : "fake"); } memset(pda, 0, sizeof(pda)); if (ia64_sn_get_sn_info(0, &sn_hub_info->shub2, &sn_hub_info->nasid_bitmask, &sn_hub_info->nasid_shift, &sn_system_size, &sn_sharing_domain_size, &sn_partition_id, &sn_coherency_id, &sn_region_size)) BUG(); sn_hub_info->as_shift = sn_hub_info->nasid_shift - 2; /* * The boot cpu makes this call again after platform initialization is * complete. */ if (nodepdaindr[0] == NULL) return; cpuid = smp_processor_id(); cpuphyid = get_sapicid(); if (ia64_sn_get_sapic_info(cpuphyid, &nasid, &subnode, &slice)) BUG(); for (i=0; i < MAX_NUMNODES; i++) { if (nodepdaindr[i]) { nodepdaindr[i]->phys_cpuid[cpuid].nasid = nasid; nodepdaindr[i]->phys_cpuid[cpuid].slice = slice; nodepdaindr[i]->phys_cpuid[cpuid].subnode = subnode; } } cnode = nasid_to_cnodeid(nasid); sn_nodepda = nodepdaindr[cnode]; pda->led_address = (typeof(pda->led_address)) (LED0 + (slice << LED_CPU_SHIFT)); pda->led_state = LED_ALWAYS_SET; pda->hb_count = HZ / 2; pda->hb_state = 0; pda->idle_flag = 0; if (cpuid != 0) { /* copy cpu 0's sn_cnodeid_to_nasid table to this cpu's */ memcpy(sn_cnodeid_to_nasid, (&per_cpu(__sn_cnodeid_to_nasid, 0)), sizeof(__ia64_per_cpu_var(__sn_cnodeid_to_nasid))); } /* * Check for WARs. * Only needs to be done once, on BSP. * Has to be done after loop above, because it uses this cpu's * sn_cnodeid_to_nasid table which was just initialized if this * isn't cpu 0. * Has to be done before assignment below. */ if (!wars_have_been_checked) { sn_check_for_wars(); wars_have_been_checked = 1; } sn_hub_info->shub_1_1_found = shub_1_1_found; /* * Set up addresses of PIO/MEM write status registers. */ { u64 pio1[] = {SH1_PIO_WRITE_STATUS_0, 0, SH1_PIO_WRITE_STATUS_1, 0}; u64 pio2[] = {SH2_PIO_WRITE_STATUS_0, SH2_PIO_WRITE_STATUS_2, SH2_PIO_WRITE_STATUS_1, SH2_PIO_WRITE_STATUS_3}; u64 *pio; pio = is_shub1() ? pio1 : pio2; pda->pio_write_status_addr = (volatile unsigned long *) LOCAL_MMR_ADDR(pio[slice]); pda->pio_write_status_val = is_shub1() ? SH_PIO_WRITE_STATUS_PENDING_WRITE_COUNT_MASK : 0; } /* * WAR addresses for SHUB 1.x. */ if (local_node_data->active_cpu_count++ == 0 && is_shub1()) { int buddy_nasid; buddy_nasid = cnodeid_to_nasid(numa_node_id() == num_online_nodes() - 1 ? 0 : numa_node_id() + 1); pda->pio_shub_war_cam_addr = (volatile unsigned long *)GLOBAL_MMR_ADDR(nasid, SH1_PI_CAM_CONTROL); } } /* * Scan klconfig for ionodes. Add the nasids to the * physical_node_map and the pda and increment numionodes. */ static void __init scan_for_ionodes(void) { int nasid = 0; lboard_t *brd; /* fakeprom does not support klgraph */ if (IS_RUNNING_ON_FAKE_PROM()) return; /* Setup ionodes with memory */ for (nasid = 0; nasid < MAX_PHYSNODE_ID; nasid += 2) { char *klgraph_header; cnodeid_t cnodeid; if (physical_node_map[nasid] == -1) continue; cnodeid = -1; klgraph_header = __va(ia64_sn_get_klconfig_addr(nasid)); if (!klgraph_header) { BUG(); /* All nodes must have klconfig tables! */ } cnodeid = nasid_to_cnodeid(nasid); root_lboard[cnodeid] = (lboard_t *) NODE_OFFSET_TO_LBOARD((nasid), ((kl_config_hdr_t *) (klgraph_header))-> ch_board_info); } /* Scan headless/memless IO Nodes. */ for (nasid = 0; nasid < MAX_PHYSNODE_ID; nasid += 2) { /* if there's no nasid, don't try to read the klconfig on the node */ if (physical_node_map[nasid] == -1) continue; brd = find_lboard_any((lboard_t *) root_lboard[nasid_to_cnodeid(nasid)], KLTYPE_SNIA); if (brd) { brd = KLCF_NEXT_ANY(brd); /* Skip this node's lboard */ if (!brd) continue; } brd = find_lboard_any(brd, KLTYPE_SNIA); while (brd) { sn_cnodeid_to_nasid[numionodes] = brd->brd_nasid; physical_node_map[brd->brd_nasid] = numionodes; root_lboard[numionodes] = brd; numionodes++; brd = KLCF_NEXT_ANY(brd); if (!brd) break; brd = find_lboard_any(brd, KLTYPE_SNIA); } } /* Scan for TIO nodes. */ for (nasid = 0; nasid < MAX_PHYSNODE_ID; nasid += 2) { /* if there's no nasid, don't try to read the klconfig on the node */ if (physical_node_map[nasid] == -1) continue; brd = find_lboard_any((lboard_t *) root_lboard[nasid_to_cnodeid(nasid)], KLTYPE_TIO); while (brd) { sn_cnodeid_to_nasid[numionodes] = brd->brd_nasid; physical_node_map[brd->brd_nasid] = numionodes; root_lboard[numionodes] = brd; numionodes++; brd = KLCF_NEXT_ANY(brd); if (!brd) break; brd = find_lboard_any(brd, KLTYPE_TIO); } } } int nasid_slice_to_cpuid(int nasid, int slice) { long cpu; for (cpu=0; cpu < NR_CPUS; cpu++) if (cpuid_to_nasid(cpu) == nasid && cpuid_to_slice(cpu) == slice) return cpu; return -1; }