[IA64] machvec support for SGI UV platform

This patch adds the basic IA64 machvec infrastructure to support
the SGI "UV" platform.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 0df5f6f75edf7a016d7033a85519e778d4cfcc7c..16be41446b5bd60bed0730db3b2f152ab851d085 100644 (file)
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -135,6 +135,7 @@ config IA64_GENERIC
          HP-zx1/sx1000         For HP systems
          HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
          SGI-SN2               For SGI Altix systems
+         SGI-UV                For SGI UV systems
          Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 
          If you don't know what to do, choose "generic".
@@ -170,6 +171,18 @@ config IA64_SGI_SN2
          to select this option.  If in doubt, select ia64 generic support
          instead.
 
+config IA64_SGI_UV`
+       bool "SGI-UV`"
+       select NUMA
+       select ACPI_NUMA
+       select SWIOTLB
+       help
+         Selecting this option will optimize the kernel for use on UV based
+         systems, but the resulting kernel binary will not run on other
+         types of ia64 systems.  If you have an SGI UV system, it's safe
+         to select this option.  If in doubt, select ia64 generic support
+         instead.
+
 config IA64_HP_SIM
        bool "Ski-simulator"
        select SWIOTLB

diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index ec4cca477f491c31cf74b79f184e1fce812cf4dc..88f1a55c6c94461c9967dbb54dec198abd9935ca 100644 (file)
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -63,7 +63,7 @@ drivers-$(CONFIG_PCI)         += arch/ia64/pci/
 drivers-$(CONFIG_IA64_HP_SIM)  += arch/ia64/hp/sim/
 drivers-$(CONFIG_IA64_HP_ZX1)  += arch/ia64/hp/common/ arch/ia64/hp/zx1/
 drivers-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/hp/common/ arch/ia64/hp/zx1/
-drivers-$(CONFIG_IA64_GENERIC) += arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/hp/sim/ arch/ia64/sn/
+drivers-$(CONFIG_IA64_GENERIC) += arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/hp/sim/ arch/ia64/sn/ arch/ia64/uv/
 drivers-$(CONFIG_OPROFILE)     += arch/ia64/oprofile/
 
 boot := arch/ia64/hp/sim/boot

diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 19709a0796351e408a30fcd74ebc3a6ac92ec279..6ff6815d34ef9166be93f4580829416a54ff7ffd 100644 (file)
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -117,7 +117,10 @@ acpi_get_sysname(void)
        if (!strcmp(hdr->oem_id, "HP")) {
                return "hpzx1";
        } else if (!strcmp(hdr->oem_id, "SGI")) {
-               return "sn2";
+               if (!strcmp(hdr->oem_table_id + 4, "UV"))
+                       return "uv";
+               else
+                       return "sn2";
        }
 
        return "dig";
@@ -130,6 +133,8 @@ acpi_get_sysname(void)
        return "hpzx1_swiotlb";
 # elif defined (CONFIG_IA64_SGI_SN2)
        return "sn2";
+# elif defined (CONFIG_IA64_SGI_UV)
+       return "uv";
 # elif defined (CONFIG_IA64_DIG)
        return "dig";
 # else

diff --git a/arch/ia64/uv/Makefile b/arch/ia64/uv/Makefile
new file mode 100644 (file)
index 0000000..aa9f919
--- /dev/null
+++ b/arch/ia64/uv/Makefile
@@ -0,0 +1,12 @@
+# arch/ia64/uv/Makefile
+#
+# 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) 2008 Silicon Graphics, Inc.  All Rights Reserved.
+#
+# Makefile for the sn uv subplatform
+#
+
+obj-y += kernel/

diff --git a/arch/ia64/uv/kernel/Makefile b/arch/ia64/uv/kernel/Makefile
new file mode 100644 (file)
index 0000000..8d92b46
--- /dev/null
+++ b/arch/ia64/uv/kernel/Makefile
@@ -0,0 +1,13 @@
+# arch/ia64/uv/kernel/Makefile
+#
+# 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) 2008 Silicon Graphics, Inc.  All Rights Reserved.
+#
+
+EXTRA_CFLAGS += -Iarch/ia64/sn/include
+
+obj-y                          += setup.o
+obj-$(CONFIG_IA64_GENERIC)      += machvec.o

diff --git a/arch/ia64/uv/kernel/machvec.c b/arch/ia64/uv/kernel/machvec.c
new file mode 100644 (file)
index 0000000..50737a9
--- /dev/null
+++ b/arch/ia64/uv/kernel/machvec.c
@@ -0,0 +1,11 @@
+/*
+ * 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) 2008 Silicon Graphics, Inc.  All Rights Reserved.
+ */
+
+#define MACHVEC_PLATFORM_NAME  uv
+#define MACHVEC_PLATFORM_HEADER        <asm/machvec_uv.h>
+#include <asm/machvec_init.h>

diff --git a/arch/ia64/uv/kernel/setup.c b/arch/ia64/uv/kernel/setup.c
new file mode 100644 (file)
index 0000000..9aa7432
--- /dev/null
+++ b/arch/ia64/uv/kernel/setup.c
@@ -0,0 +1,98 @@
+/*
+ * 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.
+ *
+ * SGI UV Core Functions
+ *
+ * Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/percpu.h>
+#include <asm/sn/simulator.h>
+#include <asm/uv/uv_mmrs.h>
+#include <asm/uv/uv_hub.h>
+
+DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
+EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
+
+
+struct redir_addr {
+       unsigned long redirect;
+       unsigned long alias;
+};
+
+#define DEST_SHIFT UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR_DEST_BASE_SHFT
+
+static __initdata struct redir_addr redir_addrs[] = {
+       {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR, UVH_SI_ALIAS0_OVERLAY_CONFIG},
+       {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_1_MMR, UVH_SI_ALIAS1_OVERLAY_CONFIG},
+       {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_2_MMR, UVH_SI_ALIAS2_OVERLAY_CONFIG},
+};
+
+static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
+{
+       union uvh_si_alias0_overlay_config_u alias;
+       union uvh_rh_gam_alias210_redirect_config_2_mmr_u redirect;
+       int i;
+
+       for (i = 0; i < ARRAY_SIZE(redir_addrs); i++) {
+               alias.v = uv_read_local_mmr(redir_addrs[i].alias);
+               if (alias.s.base == 0) {
+                       *size = (1UL << alias.s.m_alias);
+                       redirect.v = uv_read_local_mmr(redir_addrs[i].redirect);
+                       *base = (unsigned long)redirect.s.dest_base << DEST_SHIFT;
+                       return;
+               }
+       }
+       BUG();
+}
+
+void __init uv_setup(char **cmdline_p)
+{
+       union uvh_si_addr_map_config_u m_n_config;
+       union uvh_node_id_u node_id;
+       unsigned long gnode_upper;
+       int nid, cpu, m_val, n_val;
+       unsigned long mmr_base, lowmem_redir_base, lowmem_redir_size;
+
+       if (IS_MEDUSA()) {
+               lowmem_redir_base = 0;
+               lowmem_redir_size = 0;
+               node_id.v = 0;
+               m_n_config.s.m_skt = 37;
+               m_n_config.s.n_skt = 0;
+               mmr_base = 0;
+       } else {
+               get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
+               node_id.v = uv_read_local_mmr(UVH_NODE_ID);
+               m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
+               mmr_base =
+                       uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
+                               ~UV_MMR_ENABLE;
+       }
+
+       m_val = m_n_config.s.m_skt;
+       n_val = m_n_config.s.n_skt;
+       printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base);
+
+       gnode_upper = (((unsigned long)node_id.s.node_id) &
+                      ~((1 << n_val) - 1)) << m_val;
+
+       for_each_present_cpu(cpu) {
+               nid = cpu_to_node(cpu);
+               uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
+               uv_cpu_hub_info(cpu)->lowmem_remap_top =
+                       lowmem_redir_base + lowmem_redir_size;
+               uv_cpu_hub_info(cpu)->m_val = m_val;
+               uv_cpu_hub_info(cpu)->n_val = m_val;
+               uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) -1;
+               uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
+               uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
+               uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
+               uv_cpu_hub_info(cpu)->coherency_domain_number = 0;/* ZZZ */
+               printk(KERN_DEBUG "UV cpu %d, nid %d\n", cpu, nid);
+       }
+}
+

diff --git a/include/asm-ia64/machvec.h b/include/asm-ia64/machvec.h
index 9f020eb825c58c89224bfd10923a1872d77cb3ad..0721a5e8271e7ffe2181a487689f155b7b85cb89 100644 (file)
--- a/include/asm-ia64/machvec.h
+++ b/include/asm-ia64/machvec.h
@@ -126,6 +126,8 @@ extern void machvec_tlb_migrate_finish (struct mm_struct *);
 #  include <asm/machvec_hpzx1_swiotlb.h>
 # elif defined (CONFIG_IA64_SGI_SN2)
 #  include <asm/machvec_sn2.h>
+# elif defined (CONFIG_IA64_SGI_UV)
+#  include <asm/machvec_uv.h>
 # elif defined (CONFIG_IA64_GENERIC)
 
 # ifdef MACHVEC_PLATFORM_HEADER

diff --git a/include/asm-ia64/machvec_uv.h b/include/asm-ia64/machvec_uv.h
new file mode 100644 (file)
index 0000000..2931447
--- /dev/null
+++ b/include/asm-ia64/machvec_uv.h
@@ -0,0 +1,26 @@
+/*
+ * 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.
+ *
+ * SGI UV Core Functions
+ *
+ * Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
+ */
+
+#ifndef _ASM_IA64_MACHVEC_UV_H
+#define _ASM_IA64_MACHVEC_UV_H
+
+extern ia64_mv_setup_t uv_setup;
+
+/*
+ * This stuff has dual use!
+ *
+ * For a generic kernel, the macros are used to initialize the
+ * platform's machvec structure.  When compiling a non-generic kernel,
+ * the macros are used directly.
+ */
+#define platform_name                  "uv"
+#define platform_setup                 uv_setup
+
+#endif /* _ASM_IA64_MACHVEC_UV_H */