diff options
| -rw-r--r-- | Documentation/ABI/testing/sysfs-firmware-sgi_uv | 160 | ||||
| -rw-r--r-- | MAINTAINERS | 6 | ||||
| -rw-r--r-- | arch/x86/include/asm/uv/bios.h | 51 | ||||
| -rw-r--r-- | arch/x86/include/asm/uv/uv_geo.h | 103 | ||||
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_uv_x.c | 23 | ||||
| -rw-r--r-- | arch/x86/platform/uv/Makefile | 2 | ||||
| -rw-r--r-- | arch/x86/platform/uv/bios_uv.c | 55 | ||||
| -rw-r--r-- | arch/x86/platform/uv/uv_sysfs.c | 63 | ||||
| -rw-r--r-- | drivers/platform/x86/Kconfig | 11 | ||||
| -rw-r--r-- | drivers/platform/x86/Makefile | 3 | ||||
| -rw-r--r-- | drivers/platform/x86/uv_sysfs.c | 929 |
11 files changed, 1327 insertions, 79 deletions
diff --git a/Documentation/ABI/testing/sysfs-firmware-sgi_uv b/Documentation/ABI/testing/sysfs-firmware-sgi_uv index 66800baab096..637c668cbe45 100644 --- a/Documentation/ABI/testing/sysfs-firmware-sgi_uv +++ b/Documentation/ABI/testing/sysfs-firmware-sgi_uv @@ -1,27 +1,159 @@ What: /sys/firmware/sgi_uv/ -Date: August 2008 -Contact: Russ Anderson <rja@sgi.com> +Date: September 2020 +Contact: Justin Ernst <justin.ernst@hpe.com> Description: The /sys/firmware/sgi_uv directory contains information - about the SGI UV platform. + about the UV platform. - Under that directory are a number of files:: + Under that directory are a number of read-only attributes:: + archtype + hub_type + hubless partition_id coherence_id + uv_type + + The archtype entry contains the UV architecture type that + is used to select arch-dependent addresses and features. + It can be set via the OEM_ID in the ACPI MADT table or by + UVsystab entry both passed from UV BIOS. + + The hub_type entry is used to select the type of hub which is + similar to uv_type but encoded in a binary format. Include + the file uv_hub.h to get the definitions. + + The hubless entry basically is present and set only if there + is no hub. In this case the hub_type entry is not present. The partition_id entry contains the partition id. - SGI UV systems can be partitioned into multiple physical + UV systems can be partitioned into multiple physical machines, which each partition running a unique copy - of the operating system. Each partition will have a unique - partition id. To display the partition id, use the command:: - - cat /sys/firmware/sgi_uv/partition_id + of the operating system. Each partition will have a unique + partition id. The coherence_id entry contains the coherence id. - A partitioned SGI UV system can have one or more coherence - domain. The coherence id indicates which coherence domain - this partition is in. To display the coherence id, use the - command:: + A partitioned UV system can have one or more coherence + domains. The coherence id indicates which coherence domain + this partition is in. + + The uv_type entry contains the hub revision number. + This value can be used to identify the UV system version:: + "0.*" = Hubless UV ('*' is subtype) + + "3.0" = UV2 + "5.0" = UV3 + "7.0" = UV4 + "7.1" = UV4a + "9.0" = UV5 + + The /sys/firmware/sgi_uv directory also contains two directories:: + + hubs/ + pcibuses/ + + The hubs directory contains a number of hub objects, each representing + a UV Hub visible to the BIOS. Each hub object's name is appended by a + unique ordinal value (ex. /sys/firmware/sgi_uv/hubs/hub_5) + + Each hub object directory contains a number of read-only attributes:: + + cnode + location + name + nasid + shared + this_partition + + The cnode entry contains the cnode number of the corresponding hub. + If a cnode value is not applicable, the value returned will be -1. + + The location entry contains the location string of the corresponding hub. + This value is used to physically identify a hub within a system. + + The name entry contains the name of the corresponding hub. This name can + be two variants:: + + "UVHub x.x" = A 'node' ASIC, connecting a CPU to the interconnect + fabric. The 'x.x' value represents the ASIC revision. + (ex. 'UVHub 5.0') + + "NLxRouter" = A 'router ASIC, only connecting other ASICs to + the interconnect fabric. The 'x' value representing + the fabric technology version. (ex. 'NL8Router') + + The nasid entry contains the nasid number of the corresponding hub. + If a nasid value is not applicable, the value returned will be -1. + + The shared entry contains a boolean value describing whether the + corresponding hub is shared between system partitions. + + The this_partition entry contains a boolean value describing whether + the corresponding hub is local to the current partition. + + Each hub object directory also contains a number of port objects, + each representing a fabric port on the corresponding hub. + A port object's name is appended by a unique ordinal value + (ex. /sys/firmware/sgi_uv/hubs/hub_5/port_3) + + Each port object directory contains a number of read-only attributes:: + + conn_hub + conn_port + + The conn_hub entry contains a value representing the unique + oridinal value of the hub on the other end of the fabric + cable plugged into the port. If the port is disconnected, + the value returned will be -1. + + The conn_port entry contains a value representing the unique + oridinal value of the port on the other end of the fabric cable + plugged into the port. If the port is disconnected, the value + returned will be -1. + + Ex: + A value of '3' is read from: + /sys/firmware/sgi_uv/hubs/hub_5/port_3/conn_hub + + and a value of '6' is read from: + /sys/firmware/sgi_uv/hubs/hub_5/port_3/conn_port + + representing that this port is connected to: + /sys/firmware/sgi_uv/hubs/hub_3/port_6 + + The pcibuses directory contains a number of PCI bus objects. + Each PCI bus object's name is appended by its PCI bus address. + (ex. pcibus_0003:80) + + Each pcibus object has a number of possible read-only attributes:: + + type + location + slot + ppb_addr + iio_stack + + The type entry contains a value describing the type of IO at + the corresponding PCI bus address. Known possible values + across all UV versions are:: + + BASE IO + PCIe IO + PCIe SLOT + NODE IO + Riser + PPB + + The location entry contains the location string of the UV Hub + of the CPU physically connected to the corresponding PCI bus. + + The slot entry contains the physical slot number of the + corresponding PCI bus. This value is used to physically locate + PCI cards within a system. + + The ppb_addr entry contains the PCI address string of the + bridged PCI bus. This entry is only present when the PCI bus + object type is 'PPB'. - cat /sys/firmware/sgi_uv/coherence_id + The iio_stack entry contains a value describing the IIO stack + number that the corresponding PCI bus object is connected to. diff --git a/MAINTAINERS b/MAINTAINERS index cb73e8550995..3a58691d6602 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -18454,6 +18454,12 @@ F: include/uapi/linux/uuid.h F: lib/test_uuid.c F: lib/uuid.c +UV SYSFS DRIVER +M: Justin Ernst <justin.ernst@hpe.com> +L: platform-driver-x86@vger.kernel.org +S: Maintained +F: drivers/platform/x86/uv_sysfs.c + UVESAFB DRIVER M: Michal Januszewski <spock@gentoo.org> L: linux-fbdev@vger.kernel.org diff --git a/arch/x86/include/asm/uv/bios.h b/arch/x86/include/asm/uv/bios.h index 08b3d810dfba..1b6455f881f9 100644 --- a/arch/x86/include/asm/uv/bios.h +++ b/arch/x86/include/asm/uv/bios.h @@ -28,6 +28,20 @@ enum uv_bios_cmd { UV_BIOS_SET_LEGACY_VGA_TARGET }; +#define UV_BIOS_EXTRA 0x10000 +#define UV_BIOS_GET_PCI_TOPOLOGY 0x10001 +#define UV_BIOS_GET_GEOINFO 0x10003 + +#define UV_BIOS_EXTRA_OP_MEM_COPYIN 0x1000 +#define UV_BIOS_EXTRA_OP_MEM_COPYOUT 0x2000 +#define UV_BIOS_EXTRA_OP_MASK 0x0fff +#define UV_BIOS_EXTRA_GET_HEAPSIZE 1 +#define UV_BIOS_EXTRA_INSTALL_HEAP 2 +#define UV_BIOS_EXTRA_MASTER_NASID 3 +#define UV_BIOS_EXTRA_OBJECT_COUNT (10|UV_BIOS_EXTRA_OP_MEM_COPYOUT) +#define UV_BIOS_EXTRA_ENUM_OBJECTS (12|UV_BIOS_EXTRA_OP_MEM_COPYOUT) +#define UV_BIOS_EXTRA_ENUM_PORTS (13|UV_BIOS_EXTRA_OP_MEM_COPYOUT) + /* * Status values returned from a BIOS call. */ @@ -109,6 +123,32 @@ struct uv_systab { } entry[1]; /* additional entries follow */ }; extern struct uv_systab *uv_systab; + +#define UV_BIOS_MAXSTRING 128 +struct uv_bios_hub_info { + unsigned int id; + union { + struct { + unsigned long long this_part:1; + unsigned long long is_shared:1; + unsigned long long is_disabled:1; + } fields; + struct { + unsigned long long flags; + unsigned long long reserved; + } b; + } f; + char name[UV_BIOS_MAXSTRING]; + char location[UV_BIOS_MAXSTRING]; + unsigned int ports; +}; + +struct uv_bios_port_info { + unsigned int port; + unsigned int conn_id; + unsigned int conn_port; +}; + /* (... end of definitions from UV BIOS ...) */ enum { @@ -142,6 +182,15 @@ extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect); extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *); extern int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus); +extern s64 uv_bios_get_master_nasid(u64 sz, u64 *nasid); +extern s64 uv_bios_get_heapsize(u64 nasid, u64 sz, u64 *heap_sz); +extern s64 uv_bios_install_heap(u64 nasid, u64 sz, u64 *heap); +extern s64 uv_bios_obj_count(u64 nasid, u64 sz, u64 *objcnt); +extern s64 uv_bios_enum_objs(u64 nasid, u64 sz, u64 *objbuf); +extern s64 uv_bios_enum_ports(u64 nasid, u64 obj_id, u64 sz, u64 *portbuf); +extern s64 uv_bios_get_geoinfo(u64 nasid, u64 sz, u64 *geo); +extern s64 uv_bios_get_pci_topology(u64 sz, u64 *buf); + extern int uv_bios_init(void); extern unsigned long get_uv_systab_phys(bool msg); @@ -151,6 +200,8 @@ extern long sn_partition_id; extern long sn_coherency_id; extern long sn_region_size; extern long system_serial_number; +extern ssize_t uv_get_archtype(char *buf, int len); +extern int uv_get_hubless_system(void); extern struct kobject *sgi_uv_kobj; /* /sys/firmware/sgi_uv */ diff --git a/arch/x86/include/asm/uv/uv_geo.h b/arch/x86/include/asm/uv/uv_geo.h new file mode 100644 index 000000000000..f241451035fb --- /dev/null +++ b/arch/x86/include/asm/uv/uv_geo.h @@ -0,0 +1,103 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later + * + * 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) 2020 Hewlett Packard Enterprise Development LP. All rights reserved. + */ + +#ifndef _ASM_UV_GEO_H +#define _ASM_UV_GEO_H + +/* Type declaractions */ + +/* Size of a geoid_s structure (must be before decl. of geoid_u) */ +#define GEOID_SIZE 8 + +/* Fields common to all substructures */ +struct geo_common_s { + unsigned char type; /* What type of h/w is named by this geoid_s */ + unsigned char blade; + unsigned char slot; /* slot is IRU */ + unsigned char upos; + unsigned char rack; +}; + +/* Additional fields for particular types of hardware */ +struct geo_node_s { + struct geo_common_s common; /* No additional fields needed */ +}; + +struct geo_rtr_s { + struct geo_common_s common; /* No additional fields needed */ +}; + +struct geo_iocntl_s { + struct geo_common_s common; /* No additional fields needed */ +}; + +struct geo_pcicard_s { + struct geo_iocntl_s common; + char bus; /* Bus/widget number */ + char slot; /* PCI slot number */ +}; + +/* Subcomponents of a node */ +struct geo_cpu_s { + struct geo_node_s node; + unsigned char socket:4, /* Which CPU on the node */ + thread:4; + unsigned char core; +}; + +struct geo_mem_s { + struct geo_node_s node; + char membus; /* The memory bus on the node */ + char memslot; /* The memory slot on the bus */ +}; + +union geoid_u { + struct geo_common_s common; + struct geo_node_s node; + struct geo_iocntl_s iocntl; + struct geo_pcicard_s pcicard; + struct geo_rtr_s rtr; + struct geo_cpu_s cpu; + struct geo_mem_s mem; + char padsize[GEOID_SIZE]; +}; + +/* Defined constants */ + +#define GEO_MAX_LEN 48 + +#define GEO_TYPE_INVALID 0 +#define GEO_TYPE_MODULE 1 +#define GEO_TYPE_NODE 2 +#define GEO_TYPE_RTR 3 +#define GEO_TYPE_IOCNTL 4 +#define GEO_TYPE_IOCARD 5 +#define GEO_TYPE_CPU 6 +#define GEO_TYPE_MEM 7 +#define GEO_TYPE_MAX (GEO_TYPE_MEM+1) + +static inline int geo_rack(union geoid_u g) +{ + return (g.common.type == GEO_TYPE_INVALID) ? + -1 : g.common.rack; +} + +static inline int geo_slot(union geoid_u g) +{ + return (g.common.type == GEO_TYPE_INVALID) ? + -1 : g.common.upos; +} + +static inline int geo_blade(union geoid_u g) +{ + return (g.common.type == GEO_TYPE_INVALID) ? + -1 : g.common.blade * 2 + g.common.slot; +} + +#endif /* _ASM_UV_GEO_H */ diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 235f5cde06fc..4bde125a5bf1 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -502,6 +502,18 @@ enum uv_system_type get_uv_system_type(void) return uv_system_type; } +int uv_get_hubless_system(void) +{ + return uv_hubless_system; +} +EXPORT_SYMBOL_GPL(uv_get_hubless_system); + +ssize_t uv_get_archtype(char *buf, int len) +{ + return scnprintf(buf, len, "%s/%s", uv_archtype, oem_table_id); +} +EXPORT_SYMBOL_GPL(uv_get_archtype); + int is_uv_system(void) { return uv_system_type != UV_NONE; @@ -1603,21 +1615,30 @@ static void check_efi_reboot(void) reboot_type = BOOT_ACPI; } -/* Setup user proc fs files */ +/* + * User proc fs file handling now deprecated. + * Recommend using /sys/firmware/sgi_uv/... instead. + */ static int __maybe_unused proc_hubbed_show(struct seq_file *file, void *data) { + pr_notice_once("%s: using deprecated /proc/sgi_uv/hubbed, use /sys/firmware/sgi_uv/hub_type\n", + current->comm); seq_printf(file, "0x%x\n", uv_hubbed_system); return 0; } static int __maybe_unused proc_hubless_show(struct seq_file *file, void *data) { + pr_notice_once("%s: using deprecated /proc/sgi_uv/hubless, use /sys/firmware/sgi_uv/hubless\n", + current->comm); seq_printf(file, "0x%x\n", uv_hubless_system); return 0; } static int __maybe_unused proc_archtype_show(struct seq_file *file, void *data) { + pr_notice_once("%s: using deprecated /proc/sgi_uv/archtype, use /sys/firmware/sgi_uv/archtype\n", + current->comm); seq_printf(file, "%s/%s\n", uv_archtype, oem_table_id); return 0; } diff --git a/arch/x86/platform/uv/Makefile b/arch/x86/platform/uv/Makefile index 224ff0504890..1441dda8edf7 100644 --- a/arch/x86/platform/uv/Makefile +++ b/arch/x86/platform/uv/Makefile @@ -1,2 +1,2 @@ # SPDX-License-Identifier: GPL-2.0-only -obj-$(CONFIG_X86_UV) += bios_uv.o uv_irq.o uv_sysfs.o uv_time.o uv_nmi.o +obj-$(CONFIG_X86_UV) += bios_uv.o uv_irq.o uv_time.o uv_nmi.o diff --git a/arch/x86/platform/uv/bios_uv.c b/arch/x86/platform/uv/bios_uv.c index 54511eaccf4d..bf31af3d32d6 100644 --- a/arch/x86/platform/uv/bios_uv.c +++ b/arch/x86/platform/uv/bios_uv.c @@ -72,6 +72,7 @@ static s64 uv_bios_call_irqsave(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, long sn_partition_id; EXPORT_SYMBOL_GPL(sn_partition_id); long sn_coherency_id; +EXPORT_SYMBOL_GPL(sn_coherency_id); long sn_region_size; EXPORT_SYMBOL_GPL(sn_region_size); long system_serial_number; @@ -171,6 +172,60 @@ int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus) (u64)decode, (u64)domain, (u64)bus, 0, 0); } +extern s64 uv_bios_get_master_nasid(u64 size, u64 *master_nasid) +{ + return uv_bios_call(UV_BIOS_EXTRA, 0, UV_BIOS_EXTRA_MASTER_NASID, 0, + size, (u64)master_nasid); +} +EXPORT_SYMBOL_GPL(uv_bios_get_master_nasid); + +extern s64 uv_bios_get_heapsize(u64 nasid, u64 size, u64 *heap_size) +{ + return uv_bios_call(UV_BIOS_EXTRA, nasid, UV_BIOS_EXTRA_GET_HEAPSIZE, + 0, size, (u64)heap_size); +} +EXPORT_SYMBOL_GPL(uv_bios_get_heapsize); + +extern s64 uv_bios_install_heap(u64 nasid, u64 heap_size, u64 *bios_heap) +{ + return uv_bios_call(UV_BIOS_EXTRA, nasid, UV_BIOS_EXTRA_INSTALL_HEAP, + 0, heap_size, (u64)bios_heap); +} +EXPORT_SYMBOL_GPL(uv_bios_install_heap); + +extern s64 uv_bios_obj_count(u64 nasid, u64 size, u64 *objcnt) +{ + return uv_bios_call(UV_BIOS_EXTRA, nasid, UV_BIOS_EXTRA_OBJECT_COUNT, + 0, size, (u64)objcnt); +} +EXPORT_SYMBOL_GPL(uv_bios_obj_count); + +extern s64 uv_bios_enum_objs(u64 nasid, u64 size, u64 *objbuf) +{ + return uv_bios_call(UV_BIOS_EXTRA, nasid, UV_BIOS_EXTRA_ENUM_OBJECTS, + 0, size, (u64)objbuf); +} +EXPORT_SYMBOL_GPL(uv_bios_enum_objs); + +extern s64 uv_bios_enum_ports(u64 nasid, u64 obj_id, u64 size, u64 *portbuf) +{ + return uv_bios_call(UV_BIOS_EXTRA, nasid, UV_BIOS_EXTRA_ENUM_PORTS, + obj_id, size, (u64)portbuf); +} +EXPORT_SYMBOL_GPL(uv_bios_enum_ports); + +extern s64 uv_bios_get_geoinfo(u64 nasid, u64 size, u64 *buf) +{ + return uv_bios_call(UV_BIOS_GET_GEOINFO, nasid, (u64)buf, size, 0, 0); +} +EXPORT_SYMBOL_GPL(uv_bios_get_geoinfo); + +extern s64 uv_bios_get_pci_topology(u64 size, u64 *buf) +{ + return uv_bios_call(UV_BIOS_GET_PCI_TOPOLOGY, (u64)buf, size, 0, 0, 0); +} +EXPORT_SYMBOL_GPL(uv_bios_get_pci_topology); + unsigned long get_uv_systab_phys(bool msg) { if ((uv_systab_phys == EFI_INVALID_TABLE_ADDR) || diff --git a/arch/x86/platform/uv/uv_sysfs.c b/arch/x86/platform/uv/uv_sysfs.c deleted file mode 100644 index 266773e2fb37..000000000000 --- a/arch/x86/platform/uv/uv_sysfs.c +++ /dev/null @@ -1,63 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * This file supports the /sys/firmware/sgi_uv interfaces for SGI UV. - * - * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. - * Copyright (c) Russ Anderson - */ - -#include <linux/device.h> -#include <asm/uv/bios.h> -#include <asm/uv/uv.h> - -struct kobject *sgi_uv_kobj; - -static ssize_t partition_id_show(struct kobject *kobj, - struct kobj_attribute *attr, char *buf) -{ - return snprintf(buf, PAGE_SIZE, "%ld\n", sn_partition_id); -} - -static ssize_t coherence_id_show(struct kobject *kobj, - struct kobj_attribute *attr, char *buf) -{ - return snprintf(buf, PAGE_SIZE, "%ld\n", sn_coherency_id); -} - -static struct kobj_attribute partition_id_attr = - __ATTR(partition_id, S_IRUGO, partition_id_show, NULL); - -static struct kobj_attribute coherence_id_attr = - __ATTR(coherence_id, S_IRUGO, coherence_id_show, NULL); - - -static int __init sgi_uv_sysfs_init(void) -{ - unsigned long ret; - - if (!is_uv_system()) - return -ENODEV; - - if (!sgi_uv_kobj) - sgi_uv_kobj = kobject_create_and_add("sgi_uv", firmware_kobj); - if (!sgi_uv_kobj) { - printk(KERN_WARNING "kobject_create_and_add sgi_uv failed\n"); - return -EINVAL; - } - - ret = sysfs_create_file(sgi_uv_kobj, &partition_id_attr.attr); - if (ret) { - printk(KERN_WARNING "sysfs_create_file partition_id failed\n"); - return ret; - } - - ret = sysfs_create_file(sgi_uv_kobj, &coherence_id_attr.attr); - if (ret) { - printk(KERN_WARNING "sysfs_create_file coherence_id failed\n"); - return ret; - } - - return 0; -} - -device_initcall(sgi_uv_sysfs_init); diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 0d91d136bc3b..ba34153571b8 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -78,6 +78,17 @@ config HUAWEI_WMI To compile this driver as a module, choose M here: the module will be called huawei-wmi. +config UV_SYSFS + tristate "Sysfs structure for UV systems" + depends on X86_UV + depends on SYSFS + help + This driver supports a sysfs tree describing information about + UV systems at /sys/firmware/sgi_uv/. + + To compile this driver as a module, choose M here: the module will + be called uv_sysfs. + config INTEL_WMI_SBL_FW_UPDATE tristate "Intel WMI Slim Bootloader firmware update signaling driver" depends on ACPI_WMI diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index 5f823f7eff45..a34875d833dd 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -62,6 +62,9 @@ obj-$(CONFIG_HP_WIRELESS) += hp-wireless.o obj-$(CONFIG_HP_WMI) += hp-wmi.o obj-$(CONFIG_TC1100_WMI) += tc1100-wmi.o +# Hewlett Packard Enterprise +obj-$(CONFIG_UV_SYSFS) += uv_sysfs.o + # IBM Thinkpad and Lenovo obj-$(CONFIG_IBM_RTL) += ibm_rtl.o obj-$(CONFIG_IDEAPAD_LAPTOP) += ideapad-laptop.o diff --git a/drivers/platform/x86/uv_sysfs.c b/drivers/platform/x86/uv_sysfs.c new file mode 100644 index 000000000000..7badcfa3f384 --- /dev/null +++ b/drivers/platform/x86/uv_sysfs.c @@ -0,0 +1,929 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * This file supports the /sys/firmware/sgi_uv topology tree on HPE UV. + * + * Copyright (c) 2020 Hewlett Packard Enterprise. All Rights Reserved. + * Copyright (c) Justin Ernst + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/slab.h> +#include <linux/kobject.h> +#include <asm/uv/bios.h> +#include <asm/uv/uv.h> +#include <asm/uv/uv_hub.h> +#include <asm/uv/uv_geo.h> + +#define INVALID_CNODE -1 + +struct kobject *sgi_uv_kobj; +static struct kset *uv_pcibus_kset; +static struct kset *uv_hubs_kset; +static struct uv_bios_hub_info *hub_buf; +static struct uv_bios_port_info **port_buf; +static struct uv_hub **uv_hubs; +static struct uv_pci_top_obj **uv_pci_objs; +static int num_pci_lines; +static int num_cnodes; +static int *prev_obj_to_cnode; +static int uv_bios_obj_cnt; +static signed short uv_master_nasid = -1; +static void *uv_biosheap; + +static const char *uv_type_string(void) +{ + if (is_uv5_hub()) + return "9.0"; + else if (is_uv4a_hub()) + return "7.1"; + else if (is_uv4_hub()) + return "7.0"; + else if (is_uv3_hub()) + return "5.0"; + else if (is_uv2_hub()) + return "3.0"; + else if (uv_get_hubless_system()) + return "0.1"; + else + return "unknown"; +} + +static int ordinal_to_nasid(int ordinal) +{ + if (ordinal < num_cnodes && ordinal >= 0) + return UV_PNODE_TO_NASID(uv_blade_to_pnode(ordinal)); + else + return -1; +} + +static union geoid_u cnode_to_geoid(int cnode) +{ + union geoid_u geoid; + + uv_bios_get_geoinfo(ordinal_to_nasid(cnode), (u64)sizeof(union geoid_u), (u64 *)&geoid); + return geoid; +} + +static int location_to_bpos(char *location, int *rack, int *slot, int *blade) +{ + char type, r, b, h; + int idb, idh; + + if (sscanf(location, "%c%03d%c%02d%c%2d%c%d", + &r, rack, &type, slot, &b, &idb, &h, &idh) != 8) + return -1; + *blade = idb * 2 + idh; + + return 0; +} + +static int cache_obj_to_cnode(struct uv_bios_hub_info *obj) +{ + int cnode; + union geoid_u geoid; + int obj_rack, obj_slot, obj_blade; + int rack, slot, blade; + + if (!obj->f.fields.this_part && !obj->f.fields.is_shared) + return 0; + + if (location_to_bpos(obj->location, &obj_rack, &obj_slot, &obj_blade)) + return -1; + + for (cnode = 0; cnode < num_cnodes; cnode++) { + geoid = cnode_to_geoid(cnode); + rack = geo_rack(geoid); + slot = geo_slot(geoid); + blade = geo_blade(geoid); + if (obj_rack == rack && obj_slot == slot && obj_blade == blade) + prev_obj_to_cnode[obj->id] = cnode; + } + + return 0; +} + +static int get_obj_to_cnode(int obj_id) +{ + return prev_obj_to_cnode[obj_id]; +} + +struct uv_hub { + struct kobject kobj; + struct uv_bios_hub_info *hub_info; + struct uv_port **ports; +}; + +#define to_uv_hub(kobj_ptr) container_of(kobj_ptr, struct uv_hub, kobj) + +static ssize_t hub_name_show(struct uv_bios_hub_info *hub_info, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%s\n", hub_info->name); +} + +static ssize_t hub_location_show(struct uv_bios_hub_info *hub_info, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%s\n", hub_info->location); +} + +static ssize_t hub_partition_show(struct uv_bios_hub_info *hub_info, char *buf) +{ + return sprintf(buf, "%d\n", hub_info->f.fields.this_part); +} + +static ssize_t hub_shared_show(struct uv_bios_hub_info *hub_info, char *buf) +{ + return sprintf(buf, "%d\n", hub_info->f.fields.is_shared); +} +static ssize_t hub_nasid_show(struct uv_bios_hub_info *hub_info, char *buf) +{ + int cnode = get_obj_to_cnode(hub_info->id); + + return sprintf(buf, "%d\n", ordinal_to_nasid(cnode)); +} +static ssize_t hub_cnode_show(struct uv_bios_hub_info *hub_info, char *buf) +{ + return sprintf(buf, "%d\n", get_obj_to_cnode(hub_info->id)); +} + +struct hub_sysfs_entry { + struct attribute attr; + ssize_t (*show)(struct uv_bios_hub_info *hub_info, char *buf); + ssize_t (*store)(struct uv_bios_hub_info *hub_info, const char *buf, size_t sz); +}; + +static struct hub_sysfs_entry name_attribute = + __ATTR(name, 0444, hub_name_show, NULL); +static struct hub_sysfs_entry location_attribute = + __ATTR(location, 0444, hub_location_show, NULL); +static struct hub_sysfs_entry partition_attribute = + __ATTR(this_partition, 0444, hub_partition_show, NULL); +static struct hub_sysfs_entry shared_attribute = + __ATTR(shared, 0444, hub_shared_show, NULL); +static struct hub_sysfs_entry nasid_attribute = + __ATTR(nasid, 0444, hub_nasid_show, NULL); +static struct hub_sysfs_entry cnode_attribute = + __ATTR(cnode, 0444, hub_cnode_show, NULL); + +static struct attribute *uv_hub_attrs[] = { + &name_attribute.attr, + &location_attribute.attr, + &partition_attribute.attr, + &shared_attribute.attr, + &nasid_attribute.attr, + &cnode_attribute.attr, + NULL, +}; + +static void hub_release(struct kobject *kobj) +{ + struct uv_hub *hub = to_uv_hub(kobj); + + kfree(hub); +} + +static ssize_t hub_type_show(struct kobject *kobj, struct attribute *attr, + char *buf) +{ + struct uv_hub *hub = to_uv_hub(kobj); + struct uv_bios_hub_info *bios_hub_info = hub->hub_info; + struct hub_sysfs_entry *entry; + + entry = container_of(attr, struct hub_sysfs_entry, attr); + + if (!entry->show) + return -EIO; + + return entry->show(bios_hub_info, buf); +} + +static const struct sysfs_ops hub_sysfs_ops = { + .show = hub_type_show, +}; + +static struct kobj_type hub_attr_type = { + .release = hub_release, + .sysfs_ops = &hub_sysfs_ops, + .default_attrs = uv_hub_attrs, +}; + +static int uv_hubs_init(void) +{ + s64 biosr; + u64 sz; + int i, ret; + + prev_obj_to_cnode = kmalloc_array(uv_bios_obj_cnt, sizeof(*prev_obj_to_cnode), + GFP_KERNEL); + if (!prev_obj_to_cnode) + return -ENOMEM; + + for (i = 0; i < uv_bios_obj_cnt; i++) + prev_obj_to_cnode[i] = INVALID_CNODE; + + uv_hubs_kset = kset_create_and_add("hubs", NULL, sgi_uv_kobj); + if (!uv_hubs_kset) { + ret = -ENOMEM; + goto err_hubs_kset; + } + sz = uv_bios_obj_cnt * sizeof(*hub_buf); + hub_buf = kzalloc(sz, GFP_KERNEL); + if (!hub_buf) { + ret = -ENOMEM; + goto err_hub_buf; + } + + biosr = uv_bios_enum_objs((u64)uv_master_nasid, sz, (u64 *)hub_buf); + if (biosr) { + ret = -EINVAL; + goto err_enum_objs; + } + + uv_hubs = kcalloc(uv_bios_obj_cnt, sizeof(*uv_hubs), GFP_KERNEL); + if (!uv_hubs) { + ret = -ENOMEM; + goto err_enum_objs; + } + + for (i = 0; i < uv_bios_obj_cnt; i++) { + uv_hubs[i] = kzalloc(sizeof(*uv_hubs[i]), GFP_KERNEL); + if (!uv_hubs[i]) { + i--; + ret = -ENOMEM; + goto err_hubs; + } + + uv_hubs[i]->hub_info = &hub_buf[i]; + cache_obj_to_cnode(uv_hubs[i]->hub_info); + + uv_hubs[i]->kobj.kset = uv_hubs_kset; + + ret = kobject_init_and_add(&uv_hubs[i]->kobj, &hub_attr_type, + NULL, "hub_%u", hub_buf[i].id); + if (ret) + goto err_hubs; + kobject_uevent(&uv_hubs[i]->kobj, KOBJ_ADD); + } + return 0; + +err_hubs: + for (; i >= 0; i--) + kobject_put(&uv_hubs[i]->kobj); + kfree(uv_hubs); +err_enum_objs: + kfree(hub_buf); +err_hub_buf: + kset_unregister(uv_hubs_kset); +err_hubs_kset: + kfree(prev_obj_to_cnode); + return ret; + +} + +static void uv_hubs_exit(void) +{ + int i; + + for (i = 0; i < uv_bios_obj_cnt; i++) + kobject_put(&uv_hubs[i]->kobj); + + kfree(uv_hubs); + kfree(hub_buf); + kset_unregister(uv_hubs_kset); + kfree(prev_obj_to_cnode); +} + +struct uv_port { + struct kobject kobj; + struct uv_bios_port_info *port_info; +}; + +#define to_uv_port(kobj_ptr) container_of(kobj_ptr, struct uv_port, kobj) + +static ssize_t uv_port_conn_hub_show(struct uv_bios_port_info *port, char *buf) +{ + return sprintf(buf, "%d\n", port->conn_id); +} + +static ssize_t uv_port_conn_port_show(struct uv_bios_port_info *port, char *buf) +{ + return sprintf(buf, "%d\n", port->conn_port); +} + +struct uv_port_sysfs_entry { + struct attribute attr; + ssize_t (*show)(struct uv_bios_port_info *port_info, char *buf); + ssize_t (*store)(struct uv_bios_port_info *port_info, const char *buf, size_t size); +}; + +static struct uv_port_sysfs_entry uv_port_conn_hub_attribute = + __ATTR(conn_hub, 0444, uv_port_conn_hub_show, NULL); +static struct uv_port_sysfs_entry uv_port_conn_port_attribute = + __ATTR(conn_port, 0444, uv_port_conn_port_show, NULL); + +static struct attribute *uv_port_attrs[] = { + &uv_port_conn_hub_attribute.attr, + &uv_port_conn_port_attribute.attr, + NULL, +}; + +static void uv_port_release(struct kobject *kobj) +{ + struct uv_port *port = to_uv_port(kobj); + + kfree(port); +} + +static ssize_t uv_port_type_show(struct kobject *kobj, struct attribute *attr, + char *buf) +{ + struct uv_port *port = to_uv_port(kobj); + struct uv_bios_port_info *port_info = port->port_info; + struct uv_port_sysfs_entry *entry; + + entry = container_of(attr, struct uv_port_sysfs_entry, attr); + + if (!entry->show) + return -EIO; + + return entry->show(port_info, buf); +} + +static const struct sysfs_ops uv_port_sysfs_ops = { + .show = uv_port_type_show, +}; + +static struct kobj_type uv_port_attr_type = { + .release = uv_port_release, + .sysfs_ops = &uv_port_sysfs_ops, + .default_attrs = uv_port_attrs, +}; + +static int uv_ports_init(void) +{ + s64 biosr; + int j = 0, k = 0, ret, sz; + + port_buf = kcalloc(uv_bios_obj_cnt, sizeof(*port_buf), GFP_KERNEL); + if (!port_buf) + return -ENOMEM; + + for (j = 0; j < uv_bios_obj_cnt; j++) { + sz = hub_buf[j].ports * sizeof(*port_buf[j]); + port_buf[j] = kzalloc(sz, GFP_KERNEL); + if (!port_buf[j]) { + ret = -ENOMEM; + j--; + goto err_port_info; + } + biosr = uv_bios_enum_ports((u64)uv_master_nasid, (u64)hub_buf[j].id, sz, + (u64 *)port_buf[j]); + if (biosr) { + ret = -EINVAL; + goto err_port_info; + } + } + for (j = 0; j < uv_bios_obj_cnt; j++) { + uv_hubs[j]->ports = kcalloc(hub_buf[j].ports, + sizeof(*uv_hubs[j]->ports), GFP_KERNEL); + if (!uv_hubs[j]->ports) { + ret = -ENOMEM; + j--; + goto err_ports; + } + } + for (j = 0; j < uv_bios_obj_cnt; j++) { + for (k = 0; k < hub_buf[j].ports; k++) { + uv_hubs[j]->ports[k] = kzalloc(sizeof(*uv_hubs[j]->ports[k]), GFP_KERNEL); + if (!uv_hubs[j]->ports[k]) { + ret = -ENOMEM; + k--; + goto err_kobj_ports; + } + uv_hubs[j]->ports[k]->port_info = &port_buf[j][k]; + ret = kobject_init_and_add(&uv_hubs[j]->ports[k]->kobj, &uv_port_attr_type, + &uv_hubs[j]->kobj, "port_%d", port_buf[j][k].port); + if (ret) + goto err_kobj_ports; + kobject_uevent(&uv_hubs[j]->ports[k]->kobj, KOBJ_ADD); + } + } + return 0; + +err_kobj_ports: + for (; j >= 0; j--) { + for (; k >= 0; k--) + kobject_put(&uv_hubs[j]->ports[k]->kobj); + if (j > 0) + k = hub_buf[j-1].ports - 1; + } + j = uv_bios_obj_cnt - 1; +err_ports: + for (; j >= 0; j--) + kfree(uv_hubs[j]->ports); + j = uv_bios_obj_cnt - 1; +err_port_info: + for (; j >= 0; j--) + kfree(port_buf[j]); + kfree(port_buf); + return ret; +} + +static void uv_ports_exit(void) +{ + int j, k; + + for (j = 0; j < uv_bios_obj_cnt; j++) { + for (k = hub_buf[j].ports - 1; k >= 0; k--) + kobject_put(&uv_hubs[j]->ports[k]->kobj); + } + for (j = 0; j < uv_bios_obj_cnt; j++) { + kfree(uv_hubs[j]->ports); + kfree(port_buf[j]); + } + kfree(port_buf); +} + +struct uv_pci_top_obj { + struct kobject kobj; + char *type; |