Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 144 insertions, 0 deletions

diff --git a/arch/ia64/uv/Makefile b/arch/ia64/uv/Makefile
new file mode 100644
index 0000000000..aa9f91947c
--- /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
index 0000000000..297196578d
--- /dev/null
+++ b/arch/ia64/uv/kernel/Makefile
@@ -0,0 +1,12 @@
+# 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.
+#
+
+ccflags-y := -Iarch/ia64/sn/include
+
+obj-y				+= setup.o
diff --git a/arch/ia64/uv/kernel/setup.c b/arch/ia64/uv/kernel/setup.c
new file mode 100644
index 0000000000..bb025486d7
--- /dev/null
+++ b/arch/ia64/uv/kernel/setup.c
@@ -0,0 +1,120 @@
+/*
+ * 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/acpi.h>
+#include <linux/efi.h>
+#include <linux/module.h>
+#include <linux/percpu.h>
+#include <asm/uv/uv.h>
+#include <asm/uv/uv_mmrs.h>
+#include <asm/uv/uv_hub.h>
+
+bool ia64_is_uv;
+EXPORT_SYMBOL_GPL(ia64_is_uv);
+
+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_probe_system_type(void)
+{
+	struct acpi_table_rsdp *rsdp;
+	struct acpi_table_xsdt *xsdt;
+
+	if (efi.acpi20 == EFI_INVALID_TABLE_ADDR) {
+		pr_err("ACPI 2.0 RSDP not found.\n");
+		return;
+	}
+
+	rsdp = (struct acpi_table_rsdp *)__va(efi.acpi20);
+	if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) {
+		pr_err("ACPI 2.0 RSDP signature incorrect.\n");
+		return;
+	}
+
+	xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address);
+	if (strncmp(xsdt->header.signature, ACPI_SIG_XSDT,
+			sizeof(ACPI_SIG_XSDT) - 1)) {
+		pr_err("ACPI 2.0 XSDT signature incorrect.\n");
+		return;
+	}
+
+	if (!strcmp(xsdt->header.oem_id, "SGI") &&
+	    !strcmp(xsdt->header.oem_table_id + 4, "UV"))
+		ia64_is_uv = true;
+}
+
+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;
+
+	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 = n_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);
+	}
+}
+