From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8137FC3A5AA for ; Thu, 5 Sep 2019 13:04:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E3AFC222BD for ; Thu, 5 Sep 2019 13:04:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726073AbfIENEE (ORCPT ); Thu, 5 Sep 2019 09:04:04 -0400 Received: from mx0a-002e3701.pphosted.com ([148.163.147.86]:23104 "EHLO mx0a-002e3701.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726097AbfIENDe (ORCPT ); Thu, 5 Sep 2019 09:03:34 -0400 Received: from pps.filterd (m0148663.ppops.net [127.0.0.1]) by mx0a-002e3701.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id x85D2OJP016164; Thu, 5 Sep 2019 13:02:54 GMT Received: from g4t3427.houston.hpe.com (g4t3427.houston.hpe.com [15.241.140.73]) by mx0a-002e3701.pphosted.com with ESMTP id 2utxpd26s9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 05 Sep 2019 13:02:54 +0000 Received: from stormcage.eag.rdlabs.hpecorp.net (unknown [128.162.236.70]) by g4t3427.houston.hpe.com (Postfix) with ESMTP id C2F197A; Thu, 5 Sep 2019 13:02:53 +0000 (UTC) Received: by stormcage.eag.rdlabs.hpecorp.net (Postfix, from userid 5508) id 4DAC5201EA8FE; Thu, 5 Sep 2019 08:02:53 -0500 (CDT) Message-Id: <20190905130253.207686954@stormcage.eag.rdlabs.hpecorp.net> References: <20190905130252.590161292@stormcage.eag.rdlabs.hpecorp.net> User-Agent: quilt/0.46-1 Date: Thu, 05 Sep 2019 08:02:57 -0500 From: Mike Travis To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Andrew Morton , Borislav Petkov , Christoph Hellwig Cc: Dimitri Sivanich , Russ Anderson , Hedi Berriche , Steve Wahl , x86@kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH 5/8] x86/platform/uv: Add UV Hubbed/Hubless Proc FS Files Content-Disposition: inline; filename=add-procfs-files X-HPE-SCL: -1 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.70,1.0.8 definitions=2019-09-05_04:2019-09-04,2019-09-05 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 clxscore=1015 priorityscore=1501 mlxscore=0 spamscore=0 malwarescore=0 bulkscore=0 mlxlogscore=999 impostorscore=0 suspectscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1906280000 definitions=main-1909050128 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Indicate to UV user utilities that UV hubless support is available on this system via the existing /proc infterface. The current interface is maintained with the addition of new /proc leaves ("hubbed" and "hubless") that contain the specific type of UV arch this one is. Signed-off-by: Mike Travis Reviewed-by: Steve Wahl Reviewed-by: Dimitri Sivanich To: Thomas Gleixner To: Ingo Molnar To: H. Peter Anvin To: Andrew Morton To: Borislav Petkov To: Christoph Hellwig Cc: Dimitri Sivanich Cc: Russ Anderson Cc: Hedi Berriche Cc: Steve Wahl Cc: x86@kernel.org Cc: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org --- v2: remove is_uv_hubbed define; remove leading '_' from _is_uv_hubbed --- arch/x86/include/asm/uv/uv.h | 4 + arch/x86/kernel/apic/x2apic_uv_x.c | 93 ++++++++++++++++++++++++++++++++++++- 2 files changed, 96 insertions(+), 1 deletion(-) --- linux.orig/arch/x86/include/asm/uv/uv.h +++ linux/arch/x86/include/asm/uv/uv.h @@ -12,6 +12,8 @@ struct mm_struct; #ifdef CONFIG_X86_UV #include +#define UV_PROC_NODE "sgi_uv" + static inline int uv(int uvtype) { /* uv(0) is "any" */ @@ -28,6 +30,7 @@ static inline bool is_early_uv_system(vo return uv_systab_phys && uv_systab_phys != EFI_INVALID_TABLE_ADDR; } extern int is_uv_system(void); +extern int is_uv_hubbed(int uvtype); extern int is_uv_hubless(int uvtype); extern void uv_cpu_init(void); extern void uv_nmi_init(void); @@ -40,6 +43,7 @@ extern const struct cpumask *uv_flush_tl static inline enum uv_system_type get_uv_system_type(void) { return UV_NONE; } static inline bool is_early_uv_system(void) { return 0; } static inline int is_uv_system(void) { return 0; } +static inline int is_uv_hubbed(int uv) { return 0; } static inline int is_uv_hubless(int uv) { return 0; } static inline void uv_cpu_init(void) { } static inline void uv_system_init(void) { } --- linux.orig/arch/x86/kernel/apic/x2apic_uv_x.c +++ linux/arch/x86/kernel/apic/x2apic_uv_x.c @@ -26,6 +26,7 @@ static DEFINE_PER_CPU(int, x2apic_extra_bits); static enum uv_system_type uv_system_type; +static int uv_hubbed_system; static int uv_hubless_system; static u64 gru_start_paddr, gru_end_paddr; static u64 gru_dist_base, gru_first_node_paddr = -1LL, gru_last_node_paddr; @@ -309,6 +310,24 @@ static int __init uv_acpi_madt_oem_check if (uv_hub_info->hub_revision == 0) goto badbios; + switch (uv_hub_info->hub_revision) { + case UV4_HUB_REVISION_BASE: + uv_hubbed_system = 0x11; + break; + + case UV3_HUB_REVISION_BASE: + uv_hubbed_system = 0x9; + break; + + case UV2_HUB_REVISION_BASE: + uv_hubbed_system = 0x5; + break; + + case UV1_HUB_REVISION_BASE: + uv_hubbed_system = 0x3; + break; + } + pnodeid = early_get_pnodeid(); early_get_apic_socketid_shift(); @@ -359,6 +378,12 @@ int is_uv_system(void) } EXPORT_SYMBOL_GPL(is_uv_system); +int is_uv_hubbed(int uvtype) +{ + return (uv_hubbed_system & uvtype); +} +EXPORT_SYMBOL_GPL(is_uv_hubbed); + int is_uv_hubless(int uvtype) { return (uv_hubless_system & uvtype); @@ -1457,6 +1482,68 @@ static void __init build_socket_tables(v } } +/* Setup user proc fs files */ +static int proc_hubbed_show(struct seq_file *file, void *data) +{ + seq_printf(file, "0x%x\n", uv_hubbed_system); + return 0; +} + +static int proc_hubless_show(struct seq_file *file, void *data) +{ + seq_printf(file, "0x%x\n", uv_hubless_system); + return 0; +} + +static int proc_oemid_show(struct seq_file *file, void *data) +{ + seq_printf(file, "%s/%s\n", oem_id, oem_table_id); + return 0; +} + +static int proc_hubbed_open(struct inode *inode, struct file *file) +{ + return single_open(file, proc_hubbed_show, (void *)NULL); +} + +static int proc_hubless_open(struct inode *inode, struct file *file) +{ + return single_open(file, proc_hubless_show, (void *)NULL); +} + +static int proc_oemid_open(struct inode *inode, struct file *file) +{ + return single_open(file, proc_oemid_show, (void *)NULL); +} + +/* (struct is "non-const" as open function is set at runtime) */ +static struct file_operations proc_version_fops = { + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static const struct file_operations proc_oemid_fops = { + .open = proc_oemid_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static __init void uv_setup_proc_files(int hubless) +{ + struct proc_dir_entry *pde; + char *name = hubless ? "hubless" : "hubbed"; + + pde = proc_mkdir(UV_PROC_NODE, NULL); + proc_create("oemid", 0, pde, &proc_oemid_fops); + proc_create(name, 0, pde, &proc_version_fops); + if (hubless) + proc_version_fops.open = proc_hubless_open; + else + proc_version_fops.open = proc_hubbed_open; +} + /* Initialize UV hubless systems */ static __init int uv_system_init_hubless(void) { @@ -1468,6 +1555,10 @@ static __init int uv_system_init_hubless /* Init kernel/BIOS interface */ rc = uv_bios_init(); + /* Create user access node if UVsystab available */ + if (rc >= 0) + uv_setup_proc_files(1); + return rc; } @@ -1596,7 +1687,7 @@ static void __init uv_system_init_hub(vo uv_nmi_setup(); uv_cpu_init(); uv_scir_register_cpu_notifier(); - proc_mkdir("sgi_uv", NULL); + uv_setup_proc_files(0); /* Register Legacy VGA I/O redirection handler: */ pci_register_set_vga_state(uv_set_vga_state); --